transformer protection and control ret615 application manual · manual must satisfy themselves that...

Relion 615 series

Transformer Protection and ControlRET615Application Manual

Document ID: 1YHT530003D05Issued: 2014-05-14

Revision: CProduct version: 4.1

Copyright 2014 ABB. All rights reserved

CopyrightThis document and parts thereof must not be reproduced or copied without writtenpermission from ABB, and the contents thereof must not be imparted to a thirdparty, nor used for any unauthorized purpose.

The software or hardware described in this document is furnished under a licenseand may be used, copied, or disclosed only in accordance with the terms of suchlicense.

TrademarksABB and Relion are registered trademarks of the ABB Group. All other brand orproduct names mentioned in this document may be trademarks or registeredtrademarks of their respective holders.

WarrantyPlease inquire about the terms of warranty from your nearest ABB representative.

ABB

Nanjing SAC Power Grid Automation Co., Ltd.

No. 11 Phoenix Road, Jiangning Development Zone

211100 Nanjing

China

Telephone: +86 25 51183000

Facsimile: +86 25 51183883

Customer hotline: 4008876268

http://www.abb.com/substationautomation

HTTP://WWW.ABB.COM/SUBSTATIONAUTOMATION

DisclaimerThe data, examples and diagrams in this manual are included solely for the conceptor product description and are not to be deemed as a statement of guaranteedproperties. All persons responsible for applying the equipment addressed in thismanual must satisfy themselves that each intended application is suitable andacceptable, including that any applicable safety or other operational requirementsare complied with. In particular, any risks in applications where a system failure and/or product failure would create a risk for harm to property or persons (including butnot limited to personal injuries or death) shall be the sole responsibility of theperson or entity applying the equipment, and those so responsible are herebyrequested to ensure that all measures are taken to exclude or mitigate such risks.

This product has been designed to be connected and communicate data andinformation via a network interface which should be connected to a securenetwork. It is the sole responsibility of the person or entity responsible for networkadministration to ensure a secure connection to the network and to take thenecessary measures (such as, but not limited to, installation of firewalls, applicationof authentication measures, encryption of data, installation of anti virus programs,etc.) to protect the product and the network, its system and interface included,against any kind of security breaches, unauthorized access, interference, intrusion,leakage and/or theft of data or information. ABB is not liable for any such damagesand/or losses.

This document has been carefully checked by ABB but deviations cannot becompletely ruled out. In case any errors are detected, the reader is kindly requestedto notify the manufacturer. Other than under explicit contractual commitments, inno event shall ABB be responsible or liable for any loss or damage resulting fromthe use of this manual or the application of the equipment.

ConformityThis product complies with the directive of the Council of the EuropeanCommunities on the approximation of the laws of the Member States relating toelectromagnetic compatibility (EMC Directive 2004/108/EC) and concerningelectrical equipment for use within specified voltage limits (Low-voltage directive2006/95/EC). This conformity is the result of tests conducted by ABB inaccordance with the product standards EN 50263 and EN 60255-26 for the EMCdirective, and with the product standards EN 60255-1 and EN 60255-27 for the lowvoltage directive. The product is designed in accordance with the internationalstandards of the IEC 60255 series.

Table of contents

Section 1 Introduction.......................................................................5This manual........................................................................................5Intended audience..............................................................................5Product documentation.......................................................................6

Product documentation set............................................................6Document revision history.............................................................6Related documentation..................................................................7

Symbols and conventions...................................................................7Symbols.........................................................................................7Document conventions..................................................................8Functions, codes and symbols......................................................8

Section 2 RET615 overview...........................................................11Overview ..........................................................................................11

Product version history................................................................11PCM600 and IED connectivity package version..........................12

Operation functionality......................................................................12Optional functions........................................................................12

Physical hardware............................................................................12Local HMI.........................................................................................14

Display.........................................................................................15LEDs............................................................................................16Keypad........................................................................................16

Web HMI...........................................................................................17Authorization.....................................................................................18

Audit trail......................................................................................19Communication.................................................................................21

Ethernet redundancy...................................................................22

Section 3 RET615 standard configurations....................................25Standard configurations....................................................................25

Addition of control functions for primary devices and theuse of binary inputs and outputs..................................................28LED functionality..........................................................................28

Connection diagrams........................................................................30Presentation of standard configurations...........................................38Standard configuration A..................................................................39

Applications.................................................................................39Functions.....................................................................................40

Default I/O connections..........................................................41

Table of contents

RET615 1Application Manual

Default disturbance recorder settings.....................................43Functional diagrams....................................................................43

Functional diagrams for protection.........................................44Functional diagrams for disturbance recorder andsupervision functions..............................................................50Functional diagrams for control and interlocking....................52

Standard configuration B..................................................................56Applications.................................................................................56Functions.....................................................................................57

Default I/O connections..........................................................58Default disturbance recorder settings.....................................60

Functional diagrams....................................................................60Functional diagrams for protection.........................................61Functional diagrams for disturbance recorder andsupervision functions..............................................................67Functional diagrams for control and interlocking....................69

Standard configuration C..................................................................73Applications.................................................................................73Functions.....................................................................................74


Functional diagrams....................................................................77Functional diagrams for protection.........................................78Functional diagrams for disturbance recorder andsupervision functions..............................................................84Functional diagrams for control and interlocking....................86

Standard configuration D..................................................................90Applications.................................................................................90Functions.....................................................................................91


Functional diagrams....................................................................94Functional diagrams for protection.........................................95Functional diagrams for disturbance recorder andsupervision functions ...........................................................101Functional diagrams for control and interlocking..................103

Standard configuration E................................................................107Applications...............................................................................107Functions...................................................................................108

Default I/O connections........................................................109Default disturbance recorder settings...................................111

Functional diagrams..................................................................111Functional diagrams for protection.......................................112

Table of contents

2 RET615Application Manual

Functional diagram for disturbance recorder andsupervision functions............................................................118Functional diagrams for control and interlocking..................120

Standard configuration F................................................................124Applications...............................................................................124Functions...................................................................................124


Functional diagrams..................................................................128Functional diagrams for protection.......................................128Functional diagram for disturbance recorder andsupervision functions............................................................135Functional diagrams for control and interlocking..................137

Standard configuration G................................................................141Applications...............................................................................141Functions...................................................................................141


Functional diagrams..................................................................145Functional diagrams for protection.......................................145Functional diagram for disturbance recorder and tripcircuit supervision ................................................................152Functional diagrams for control and interlocking..................154

Standard configuration H................................................................158Applications...............................................................................158Functions...................................................................................158


Functional diagrams..................................................................162Functional diagrams for protection.......................................162Functional diagram for disturbance recorder andsupervision functions............................................................169Functional diagrams for control and interlocking..................171

Standard configuration J.................................................................175Applications...............................................................................175Functions...................................................................................175


Functional diagrams..................................................................178Functional diagrams for protection.......................................178Functional diagrams for disturbance recorder andsupervision...........................................................................183Functional diagrams for control and interlocking..................184

Standard configuration K................................................................187

Table of contents


Applications...............................................................................187Functions...................................................................................188


Functional diagrams..................................................................191Functional diagrams for protection.......................................192Functional diagrams for disturbance recorder andsupervision...........................................................................199Functional diagrams for control and interlocking..................201

Section 4 Requirements for measurement transformers..............205Current transformers......................................................................205

Current transformer requirements for non-directionalovercurrent protection................................................................205

Current transformer accuracy class and accuracy limitfactor....................................................................................205Non-directional overcurrent protection.................................206Example for non-directional overcurrent protection..............207

Section 5 IED physical connections.............................................209Inputs..............................................................................................209

Energizing inputs.......................................................................209Phase currents.....................................................................209Residual current...................................................................209Phase voltages.....................................................................209Residual voltage...................................................................210

RTD/mA inputs..........................................................................210Auxiliary supply voltage input....................................................210Binary inputs..............................................................................211Optional light sensor inputs.......................................................212

Outputs...........................................................................................212Outputs for tripping and controlling............................................212Outputs for signalling.................................................................213IRF.............................................................................................214

Section 6 Glossary.......................................................................215

Table of contents


Section 1 Introduction

1.1 This manual

The application manual contains application descriptions and setting guidelinessorted per function. The manual can be used to find out when and for what purposea typical protection function can be used. The manual can also be used whencalculating settings.

1.2 Intended audience

This manual addresses the protection and control engineer responsible forplanning, pre-engineering and engineering.

The protection and control engineer must be experienced in electrical powerengineering and have knowledge of related technology, such as protection schemesand principles.

1YHT530003D05 C Section 1Introduction


1.3 Product documentation

1.3.1 Product documentation set

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Quick start guide

Quick installation guide

Brochure

Product guide

Operation manual

Installation manual

Connection diagram

Engineering manual

Technical manual

Application manual

Communication protocol manual

IEC 61850 Engineering guide

Point list manual

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GUID-12DC16B2-2DC1-48DF-8734-0C8B7116124C V1 EN

Figure 1: The intended use of documents during the product life cycle

Product series- and product-specific manuals can be downloadedfrom the ABB Website http://www.abb.com/relion.

1.3.2 Document revision historyDocument revision/date Product version HistoryA/2009-09-29 2.0 First release

B/2010-07-02 3.0 Content updated

C/2014-05-14 4.1 Content updated to correspond to theproduct version

Download the latest documents from the ABB Websitehttp://www.abb.com/substationautomation.

Section 1 1YHT530003D05 CIntroduction


http://www.abb.com/relionHTTP://WWW.ABB.COM/SUBSTATIONAUTOMATION

1.3.3 Related documentationName of the document Document IDModbus Communication Protocol Manual 1MRS756468

IEC 60870-5-103 Communication Protocol Manual 1MRS756710

IEC 61850 Engineering Guide 1MRS756475

Engineering Manual 1MRS757121

Installation Manual 1MRS756375

Operation Manual 1MRS756708

Technical Manual 1YHT530004D05

1.4 Symbols and conventions

1.4.1 Symbols

The electrical warning icon indicates the presence of a hazardwhich could result in electrical shock.

The warning icon indicates the presence of a hazard which couldresult in personal injury.

The caution icon indicates important information or warning relatedto the concept discussed in the text. It might indicate the presenceof a hazard which could result in corruption of software or damageto equipment or property.

The information icon alerts the reader of important facts andconditions.

The tip icon indicates advice on, for example, how to design yourproject or how to use a certain function.

Although warning hazards are related to personal injury, it is necessary tounderstand that under certain operational conditions, operation of damagedequipment may result in degraded process performance leading to personal injuryor death. Therefore, comply fully with all warning and caution notices.



1.4.2 Document conventionsA particular convention may not be used in this manual.

Abbreviations and acronyms in this manual are spelled out in the glossary. Theglossary also contains definitions of important terms.

Push-button navigation in the LHMI menu structure is presented by using thepush-button icons.To navigate between the options, use and .

HMI menu paths are presented in bold.Select Main menu/Settings.

LHMI messages are shown in Courier font.To save the changes in non-volatile memory, select Yes and press .

Parameter names are shown in italics.The function can be enabled and disabled with the Operation setting.

Parameter values are indicated with quotation marks.The corresponding parameter values are "On" and "Off".

IED input/output messages and monitored data names are shown in Courier font.When the function starts, the START output is set to TRUE.

1.4.3 Functions, codes and symbolsTable 1: RET615 functions, codes and symbols

Function IEC 61850 IEC 60617 IEC-ANSIProtection

Three-phase non-directional overcurrentprotection, low stage, instance 1 PHLPTOC1 3I> (1) 51P-1 (1)


Three-phase non-directional overcurrentprotection, high stage, instance 1 PHHPTOC1 3I>> (1) 51P-2 (1)


Three-phase non-directional overcurrentprotection, instantaneous stage, instance 1 PHIPTOC1 3I>>> (1) 50P/51P (1)


Non-directional earth-fault protection, lowstage, instance 1 EFLPTOC1 Io> (1) 51N-1 (1)


Non-directional earth-fault protection, highstage, instance 1 EFHPTOC1 Io>> (1) 51N-2 (1)


Negative-sequence overcurrent protection,instance 1 NSPTOC1 I2> (1) 46 (1)

Table continues on next page



Function IEC 61850 IEC 60617 IEC-ANSINegative-sequence overcurrent protection,instance 2 NSPTOC2 I2> (2) 46 (2)



Residual overvoltage protection, instance 1 ROVPTOV1 Uo> (1) 59G (1)

Residual overvoltage protection, instance 2 ROVPTOV2 Uo> (2) 59G (2)

Three-phase undervoltage protection, instance1 PHPTUV1 3U< (1) 27 (1)

Three-phase undervoltage protection, instance2 PHPTUV2 3U< (2) 27 (2)

Three-phase overvoltage protection, instance 1 PHPTOV1 3U> (1) 59 (1)

Three-phase overvoltage protection, instance 2 PHPTOV2 3U> (2) 59 (2)

Positive-sequence undervoltage protection,instance 1 PSPTUV1 U1< (1) 47U+ (1)

Positive-sequence undervoltage protection,instance 2 PSPTUV2 U1< (2) 47U+ (2)

Negative-sequence overvoltage protection,instance 1 NSPTOV1 U2> (1) 47O- (1)

Negative-sequence overvoltage protection,instance 2 NSPTOV2 U2> (2) 47O- (2)

Three-phase thermal overload protection forpower transformers, two time constants T2PTTR1 3Ith>T 49T

Stabilized and instantaneous differentialprotection for 2W transformers TR2PTDF1 3dI>T 87T

Numerical stabilized low impedance restrictedearth-fault protection LREFPNDF1 dIoLo> 87NL

High impedance based restricted earth-faultprotection HREFPDIF1 dIoHi> 87NH

Circuit breaker failure protection CCBRBRF1 3I>/Io>BF 51BF/51NBF

Master trip, instance 1 TRPPTRC1 Master Trip (1) 94/86 (1)


Arc protection, instance 1 ARCSARC1 ARC (1) 50L/50NL (1)



Multi-purpose protection, instance 1 1) MAPGAPC1 MAP (1) MAP (1)






Control

Circuit-breaker control CBXCBR1 I O CB I O CB




Function IEC 61850 IEC 60617 IEC-ANSIDisconnector control, instance 1 DCXSWI1 I O DCC (1) I O DCC (1)

Disconnector control, instance 2 DCXSWI2 I O DCC (2) I O DCC (2)

Earthing switch control ESXSWI1 I O ESC I O ESC

Disconnector position indication, instance 1 DCSXSWI1 I O DC (1) I O DC (1)



Earthing switch indication, instance 1 ESSXSWI1 I O ES (1) I O ES (1)


Tap changer position indication TPOSSLTC1 TPOSM 84M

Condition monitoring

Circuit-breaker condition monitoring SSCBR1 CBCM CBCM

Trip circuit supervision, instance 1 TCSSCBR1 TCS (1) TCM (1)


Fuse failure supervision SEQRFUF1 FUSEF 60

Runtime counter for machines and devices MDSOPT1 OPTS OPTM

Measurement

Disturbance recorder RDRE1 - -

Three-phase current measurement, instance 1 CMMXU1 3I 3I

Three-phase current measurement, instance 2 CMMXU2 3I(B) 3I(B)

Sequence current measurement, instance 1 CSMSQI1 I1, I2, I0 I1, I2, I0

Sequence current measurement, instance 2 CSMSQ2 I1I(B), I2I(B),I0I(B)I1I(B), I2I(B),I0I(B)

Residual current measurement, instance 1 RESCMMXU1 Io In

Residual current measurement, instance 2 RESCMMXU2 Io(B) In(B)

Three-phase voltage measurement VMMXU1 3U 3U

Residual voltage measurement RESVMMXU1 Uo Vn

Sequence voltage measurement VSMSQI1 U1, U2, U0 U1, U2, U0

Three-phase power and energy measurement PEMMXU1 P, E P, E

RTD/mA measurement XRGGIO130 X130 (RTD) X130 (RTD)

1) Multi-purpose protection is used for example for RTD/mA based protection.



Section 2 RET615 overview

2.1 Overview

RET615 is a dedicated transformer protection and control IED (intelligentelectronic device) for power transformers, unit and step-up transformers includingpower generator-transformer blocks in utility and industry power distributionsystems. RET615 is a member of ABBs Relion product family and part of its 615protection and control product series. The 615 series IEDs are characterized bytheir compactness and withdrawable-unit design.

Re-engineered from the ground up, the 615 series has been designed to unleash thefull potential of the IEC 61850 standard for communication and interoperabilitybetween substation automation devices. Once the standard configuration IED hasbeen given the application-specific settings, it can directly be put into service.

The 615 series IEDs support a range of communication protocols including IEC61850 with GOOSE messaging, IEC 60870-5-103 and Modbus.

2.1.1 Product version historyProduct version Product history2.0 Product released

3.0 New configurations E, F, G and H Additions to configuration A, B, C, D, J and K Application configurability support Analog GOOSE support Large display with single line diagram Enhanced mechanical design Increased maximum amount of events and fault records Frequency measurement and protection RTD/mA measurement and protection Voltage measurement and protection Fuse failure supervision Three-phase power and energy measurements Multi-port Ethernet option

4.1 Additions/changes for configurations A-H Dual fibre optic Ethernet communication option (COM0032) Generic control point (SPCGGIO) function blocks Additional logic blocks Button object for SLD Controllable disconnector and earth switch objects for SLD Additional multi-purpose protection instances Increased maximum amount of events and fault records High-availability seamless redundancy (HSR) protocol Parallel redundancy protocol (PRP-1) Parallel use of IEC 61850 and IEC 60870-5-103 protocols Two selectable indication colors for LEDs (red or green) Online binary signal monitoring with PCM600

1YHT530003D05 C Section 2RET615 overview


2.1.2 PCM600 and IED connectivity package version Protection and Control IED Manager PCM600 Ver. 2.6 or later RET615 Connectivity Package Ver. 4.1 or later

Parameter Setting Firmware Update Disturbance Handling Signal Monitoring Lifecycle Traceability Signal Matrix Communication Management Configuration Wizard Label Printing IED User Management Application Configuration Graphical Display Editor Differential Characteristics Tool Event Viewer

Download connectivity packages from the ABB Websitehttp://www.abb.com/substationautomation.

2.2 Operation functionality

2.2.1 Optional functions Arc protection Modbus TCP/IP or RTU/ASCII IEC 60870-5-103 RTD/mA measurements and multi-purpose protection (configurations A, B, C

and D only)

2.3 Physical hardware

The IED consists of two main parts: plug-in unit and case. The content depends onthe ordered functionality.

Section 2 1YHT530003D05 CRET615 overview


HTTP://WWW.ABB.COM/SUBSTATIONAUTOMATION

Table 2: Plug-in unit and case

Main unit Slot ID Content optionsPlug-inunit

- HMI Small (4 lines, 16 characters)Large (8 lines, 16 characters)

X100 Auxiliary power/BOmodule

48-250 V DC/100-240 V AC; or 24-60 V DC2 normally-open PO contacts1 change-over SO contact1 normally-open SO contact2 double-pole PO contacts with TCS1 dedicated internal fault output contact

X110 BIO module 8 binary inputs4 signal output contacts

X120 AI/BI module 6 phase current inputs (1/5A)1 residual current input (1/5A)

Case X130 AI/BI module Only with configurations E, F, G, H and K:3 phase voltage inputs (60-210 V)1 residual voltage input (60-210 V)4 binary inputs

Optional RTD/mA module Optional for configurations A, B, C, D and J:2 generic mA inputs6 RTD sensor inputs

Optional BIO module Optional for configurations A, B, C, D and J:6 binary inputs3 signal output contacts

X000 Optional communicationmodule

See the technical manual for details about differenttypes of communication modules.

Rated values of the current and voltage inputs are basic setting parameters of theIED. The binary input thresholds are selectable within the range 18176 V DC byadjusting the binary input setting parameters.

The connection diagrams of different hardware modules are presented in this manual.

See the installation manual for more information about the case andthe plug-in unit.

Table 3: Number of physical connections in standard configurations

Conf. Analog channels Binary channels CT VT RTD/mA BI BO

A 7 -- 8 (14)1) 10 (13)1)

6/22) 8 10

B 7 -- 8 (14)1) 10 (13)1)

6/22) 8 10

C 7 -- 8 (14)1) 10 (13)1)

6/22) 8 10




Conf. Analog channels Binary channels CT VT RTD/mA BI BO

D 7 -- 8 (14)1) 10 (13)1)

6/22) 8 10

E 7 5 - 12 10

F 7 5 - 12 10

G 7 5 - 12 10

H 7 5 - 12 10

J 7 -- 8 (14)1) 10 (13)1)

6/22) 8 10

K 7 5 - 12 10

1) With optional BIO module2) With optional RTD/mA module

2.4 Local HMI

The LHMI is used for setting, monitoring and controlling the IED. The LHMIcomprises the display, buttons, LED indicators and communication port.



REF615

Overcurrent

Dir. earth-fault

Voltage protection

Phase unbalance

Thermal overload

Breaker failure

Disturb. rec. Triggered

CB condition monitoring

Supervision

Arc detected

Autoreclose shot in progr.

A070704 V3 EN

Figure 2: Example of the LHMI

2.4.1 DisplayThe LHMI includes a graphical display that supports two character sizes. Thecharacter size depends on the selected language. The amount of characters androws fitting the view depends on the character size.

Table 4: Small display

Character size1) Rows in the view Characters per rowSmall, mono-spaced (6x12 pixels) 5 20

Large, variable width (13x14 pixels) 4 8 or more

1) Depending on the selected language

Table 5: Large display

Character size1) Rows in the view Characters per rowSmall, mono-spaced (6x12 pixels) 10 20

Large, variable width (13x14 pixels) 8 8 or more

1) Depending on the selected language



The display view is divided into four basic areas.

1 2

3 4A070705 V3 EN

Figure 3: Display layout

1 Header

2 Icon

3 Content

4 Scroll bar (displayed when needed)

2.4.2 LEDsThe LHMI includes three protection indicators above the display: Ready, Start andTrip.

There are also 11 matrix programmable LEDs on front of the LHMI. The LEDscan be configured with PCM600 and the operation mode can be selected with theLHMI, WHMI or PCM600.

2.4.3 KeypadThe LHMI keypad contains push-buttons which are used to navigate in differentviews or menus. With the push-buttons you can give open or close commands toobjects in the primary circuit, for example, a circuit breaker, a contactor or adisconnector. The push-buttons are also used to acknowledge alarms, resetindications, provide help and switch between local and remote control mode.



A071176 V1 EN

Figure 4: LHMI keypad with object control, navigation and command push-buttons and RJ-45 communication port

2.5 Web HMI

The WHMI allows accessing the IED via a Web browser. The supported Webbrowser versions are Internet Explorer 7.0, 8.0 and 9.0.

WHMI is disabled by default.

WHMI offers several functions.

Programmable LEDs and event lists System supervision Parameter settings Measurement display Disturbance records Phasor diagram Single-line diagram

The menu tree structure on the WHMI is almost identical to the one on the LHMI.



A070754 V4 EN

Figure 5: Example view of the WHMI

The WHMI can be accessed locally and remotely.

Locally by connecting the laptop to the IED via the front communication port. Remotely over LAN/WAN.

2.6 Authorization

The user categories have been predefined for the LHMI and the WHMI, each withdifferent rights and default passwords.

The default passwords can be changed with Administrator user rights.

User authorization is disabled by default for LHMI but WHMIalways uses authorization.



Table 6: Predefined user categories

Username User rightsVIEWER Read only access

OPERATOR Selecting remote or local state with (only locally) Changing setting groups Controlling Clearing indications

ENGINEER Changing settings Clearing event list Clearing disturbance records Changing system settings such as IP address, serial baud rate

or disturbance recorder settings Setting the IED to test mode Selecting language

ADMINISTRATOR All listed above Changing password Factory default activation

For user authorization for PCM600, see PCM600 documentation.

2.6.1 Audit trailThe IED offers a large set of event-logging functions. Normal process-relatedevents can be viewed by the normal user with Event Viewer in PCM600. Criticalsystem and IED security-related events are logged to a separate nonvolatile audittrail for the administrator.

Audit trail is a chronological record of system activities that allows thereconstruction and examination of the sequence of events and changes in an event.Past user and process events can be examined and analyzed in a consistent methodwith the help of Event List and Event Viewer in PCM600. The IED stores 2048system events to the nonvolatile audit trail. Additionally, 1024 process events arestored in a nonvolatile event list. Both the audit trail and event list work accordingto the FIFO principle.

User audit trail is defined according to the selected set of requirements from IEEE1686. The logging is based on predefined usernames or user categories. The useraudit trail events are supported in IEC 61850-8-1, PCM600, LHMI and WHMI.

Table 7: Audit trail events

Audit trail event DescriptionConfiguration change Configuration files changed

Firmware change

Setting group remote User changed setting group remotely




Audit trail event DescriptionSetting group local User changed setting group locally

Control remote DPC object control remote

Control local DPC object control local

Test on Test mode on

Test off Test mode off

Setting commit Settings have been changed

Time change

View audit log Administrator accessed audit trail

Login

Logout

Firmware reset Reset issued by user or tool

Audit overflow Too many audit events in the time period

PCM600 Event Viewer can be used to view the audit trail events together withnormal events. Since only the administrator has the right to read audit trail,authorization must be properly configured in PCM600. The audit trail cannot bereset but PCM600 Event Viewer can filter data. Some of the audit trail events areinteresting also as normal process events.

To expose the audit trail events also as normal process events,define the level parameter via Configuration/Authorization/Authority logging.

Table 8: Comparison of authority logging levels

Audit trail event Authority logging level

NoneConfiguration change

Settinggroup

Settinggroup,control

Settingsedit

All

Configuration change

Firmware change

Setting group remote

Setting group local

Control remote

Control local

Test on

Test off

Setting commit

Time change

View audit log

Login




Audit trail event Authority logging levelLogout

Firmware reset

Audit overflow

2.7 Communication

The IED supports a range of communication protocols including IEC 61850, IEC60870-5-103 and Modbus. Operational information and controls are availablethrough these protocols. However, some communication functionality, forexample, horizontal communication between the IEDs, is only enabled by the IEC61850 communication protocol.

The IEC 61850 communication implementation supports all monitoring andcontrol functions. Additionally, parameter settings, disturbance recordings andfault records can be accessed using the IEC 61850 protocol. Disturbance recordingsare available to any Ethernet-based application in the standard COMTRADE fileformat. The IED can send and receive binary signals from other IEDs (so-calledhorizontal communication) using the IEC61850-8-1 GOOSE profile, where thehighest performance class with a total transmission time of 3 ms is supported.Furthermore, the IED supports sending and receiving of analog values usingGOOSE messaging. The IED meets the GOOSE performance requirements fortripping applications in distribution substations, as defined by the IEC 61850standard. The IED can simultaneously report events to five different clients on thestation bus.

The IED can support five simultaneous clients. If PCM600 reserves one clientconnection, only four client connections are left, for example, for IEC 61850 andModbus.

All communication connectors, except for the front port connector, are placed onintegrated optional communication modules. The IED can be connected to Ethernet-based communication systems via the RJ-45 connector (100Base-TX) or the fibre-optic LC connector (100Base-FX).

For the correct operation of redundant loop topology, it is essential that the externalswitches in the network support the RSTP protocol and that it is enabled in theswitches. Otherwise, connecting the loop topology can cause problems to thenetwork. The IED itself does not support link-down detection or RSTP. The ringrecovery process is based on the aging of the MAC addresses, and the link-up/link-down events can cause temporary breaks in communication. For a betterperformance of the self-healing loop, it is recommended that the external switchfurthest from the IED loop is assigned as the root switch (bridge priority = 0) andthe bridge priority increases towards the IED loop. The end links of the IED loopcan be attached to the same external switch or to two adjacent external switches. Aself-healing Ethernet ring requires a communication module with at least twoEthernet interfaces for all IEDs.



Managed Ethernet switchwith RSTP support

Managed Ethernet switchwith RSTP support

Client BClient A

Network ANetwork B

GUID-283597AF-9F38-4FC7-B87A-73BFDA272D0F V3 EN

Figure 6: Self-healing Ethernet ring solution

The Ethernet ring solution supports the connection of up to 30IEDs. If more than 30 IEDs are to be connected, it is recommendedthat the network is split into several rings with no more than 30IEDs per ring. Each IED has a 50-s store-and-forward delay, andto fullfill the performance requirements for fast horizontalcommunication, the ring size is limited to 30 IEDs.

2.7.1 Ethernet redundancyIEC 61850 specifies a network redundancy scheme that improves the systemavailability for substation communication. It is based on two complementaryprotocols defined in the IEC 62439-3 standard: parallel redundancy protocol PRPand high-availability seamless redundancy HSR protocol. Both the protocols relyon the duplication of all transmitted information via two Ethernet ports for onelogical network connection. Therefore, both are able to overcome the failure of alink or switch with a zero-switchover time, thus fulfilling the stringent real-timerequirements for the substation automation horizontal communication and timesynchronization.

PRP specifies that each device is connected in parallel to two local area networks.HSR applies the PRP principle to rings and to the rings of rings to achieve cost-effective redundancy. Thus, each device incorporates a switch element thatforwards frames from port to port. The HSR/PRP option is available for REF615,REM615, RET615 and REU615.



PRPEach PRP node, called a doubly attached node with PRP (DANP), is attached totwo independent LANs operated in parallel. These parallel networks in PRP arecalled LAN A and LAN B. The networks are completely separated to ensure failureindependence, and they can have different topologies. Both networks operate inparallel, thus providing zero-time recovery and continuous checking of redundancyto avoid communication failures. Non-PRP nodes, called singly attached nodes(SANs), are either attached to one network only (and can therefore communicateonly with DANPs and SANs attached to the same network), or are attached througha redundancy box, a device that behaves like a DANP.

Ethernet switchIEC 61850 PRPEthernet switch

REF615 REF620 RET620 REM620 REF615

SCADACOM600

GUID-334D26B1-C3BD-47B6-BD9D-2301190A5E9D V1 EN

Figure 7: PRP solution

In case a laptop or a PC workstation is connected as a non-PRP node to one of thePRP networks, LAN A or LAN B, it is recommended to use a redundancy boxdevice or an Ethernet switch with similar functionality between the PRP networkand SAN to remove additional PRP information from the Ethernet frames. In somecases, default PC workstation adapters are not able to handle the maximum-lengthEthernet frames with the PRP trailer.

There are different alternative ways to connect a laptop or a workstation as SAN toa PRP network.

Via an external redundancy box (RedBox) or a switch capable of connecting toPRP and normal networks

By connecting the node directly to LAN A or LAN B as SAN By connecting the node to the IED interlink port



HSRHSR applies the PRP principle of parallel operation to a single ring, treating thetwo directions as two virtual LANs. For each frame sent, a node, DANH, sends twoframes, one over each port. Both frames circulate in opposite directions over thering and each node forwards the frames it receives, from one port to the other.When the originating node receives a frame sent to itself, it discards that to avoidloops; therefore, no ring protocol is needed. Individually attached nodes, SANs,such as laptops and printers, must be attached through a redundancy box that actsas a ring element. For example, a 615 series IED with HSR support can be used asa redundancy box.

GUID-207430A7-3AEC-42B2-BC4D-3083B3225990 V1 EN

Figure 8: HSR solution



Section 3 RET615 standard configurations

3.1 Standard configurations

RET615 is available in eight alternative standard configurations. The standardsignal configuration can be altered by means of the graphical signal matrix or thegraphical application functionality of the Protection and Control IED ManagerPCM600. Further, the application configuration functionality of PCM600 supportsthe creation of multi-layer logic functions utilizing various logical elementsincluding timers and flip-flops. By combining protection functions with logicfunction blocks the IED configuration can be adapted to user specific applicationrequirements.

Table 9: Standard configurations

Description Std. conf.Three-phase transformer differential protection for two-winding transformers, numerical restricted earth-fault protectionfor the high-voltage (HV) side A

Three-phase transformer differential protection for two-winding transformers, numerical restricted earth-fault protectionfor the low-voltage (LV) side B

Three-phase transformer differential protection for two-winding transformers, high-impedance based restricted earth-fault protection for the high-voltage (HV) side C

Three-phase transformer differential protection for two-winding transformers, high-impedance based restricted earth-fault protection for the low-voltage (LV) side D

Three-phase transformer differential protection with voltage protection for two-winding transformers, numericalrestricted earth-fault protection for the high-voltage (HV) side E

Three-phase transformer differential protection with voltage protection for two-winding transformers, numericalrestricted earth-fault protection for the low-voltage (LV) side F

Three-phase transformer differential protection with voltage protection for two-winding transformers, high-impedancebased restricted earth-fault protection for the high-voltage (HV) side G

Three-phase transformer differential protection with voltage protection for two-winding transformers, high-impedancebased restricted earth-fault protection for the low-voltage (LV) side H

Three-phase transformer differential protection with voltage protection for two-winding transformers J

Transformer backup protection with voltage protection K

Table 10: Supported functions

Function A B C D E F G H J KProtection

Three-phase non-directional overcurrentprotection, low stage, instance 1 x

HV) HV) HV) HV) HV) HV) HV) HV) HV)

Three-phase non-directional overcurrentprotection, low stage, instance 2

LV) LV) LV) LV) LV) LV) LV) LV) LV)


1YHT530003D05 C Section 3RET615 standard configurations


Function A B C D E F G H J KThree-phase non-directional overcurrentprotection, high stage, instance 1


Three-phase non-directional overcurrentprotection, high stage, instance 2


Three-phase non-directional overcurrentprotection, instantaneous stage, instance 1


Three-phase non-directional overcurrentprotection, instantaneous stage, instance 2


Non-directional earth-fault protection, lowstage, instance 1

HV)1)

HV)2)

HV)1)

HV)2)

HV)2)

Non-directional earth-fault protection, lowstage, instance 2

LV)3) LV)4) LV)3) LV)4) LV)4)

Non-directional earth-fault protection, highstage, instance 1

HV)1)

HV)2)

HV)1)

HV)2)

HV)2)

Non-directional earth-fault protection, highstage, instance 2

LV)3) LV)4) LV)3) LV)4) LV)4)

Negative-sequence overcurrent protection,instance 1





HV)


LV)

Residual overvoltage protection, instance 1 HV)5) HV)5)

HV)5)

HV)5)

HV)5)

Residual overvoltage protection, instance 2 HV)5) HV)5)

HV)5)

HV)5)

HV)5)

Three-phase undervoltage protection, instance 1 HV) HV) HV) HV) HV)

Three-phase undervoltage protection, instance 2 HV) HV) HV) HV) HV)

Three-phase overvoltage protection, instance 1 HV) HV) HV) HV) HV)

Three-phase overvoltage protection, instance 2 HV) HV) HV) HV) HV)

Positive-sequence undervoltage protection,instance 1

HV) HV) HV) HV) HV)

Positive-sequence undervoltage protection,instance 2

HV) HV) HV) HV) HV)

Negative-sequence overvoltage protection,instance 1

HV) HV) HV) HV) HV)

Negative-sequence overvoltage protection,instance 2

HV) HV) HV) HV) HV)

Three-phase thermal overload protection forpower transformers, two time constants


Stabilized and instantaneous differentialprotection for 2W transformers

Numerical stabilized low impedance restrictedearth-fault protection

HV) LV)6) HV) LV)6) HV)


Section 3 1YHT530003D05 CRET615 standard configurations


Function A B C D E F G H J KHigh impedance based restricted earth-faultprotection

HV) LV)7) HV) LV)7) HV)

Circuit breaker failure protection HV)2)

HV)2)

HV)2)

HV)2)

HV)2) HV)2)

HV)2)

HV)2)

HV)2)

HV)2)

Master trip, instance 1

Master trip, instance 2

Arc protection, instance 1 o LV)8) o LV)8) o LV)8) o LV)8) o LV)8) o LV)8) o LV)8) o LV)8) o LV)8) o LV)8)



Multi-purpose protection, instance 1 9) o 10) o 10) o 10) o 10) o 10)






Control

Circuit-breaker control HV) HV) HV) HV) HV) HV) HV) HV) HV) HV)

Disconnector control, instance 1 10) 10) 10) 10) 10) 10) 10) 10) 10) 10)

Disconnector control, instance 2 10) 10) 10) 10) 10) 10) 10) 10) 10) 10)

Earthing switch control 10) 10) 10) 10) 10) 10) 10) 10) 10) 10)

Disconnector position indication, instance 1

Disconnector position indication, instance 2 10) 10) 10) 10) 10) 10) 10) 10) 10) 10)

Disconnector position indication, instance 3 10) 10) 10) 10) 10) 10) 10) 10) 10) 10)

Earthing switch indication, instance 1 10) 10) 10) 10) 10) 10) 10) 10) 10) 10)

Earthing switch indication, instance 2 10) 10) 10) 10) 10) 10) 10) 10) 10) 10)

Tap changer position indication


Circuit-breaker condition monitoring HV) HV) HV) HV) HV) HV) HV) HV) HV) HV)

Trip circuit supervision, instance 1

Trip circuit supervision, instance 2

Fuse failure supervision

Runtime counter for machines and devices

Measurement

Disturbance recorder

Three-phase current measurement, instance 1 HV) HV) HV) HV) HV) HV) HV) HV) HV) HV)

Three-phase current measurement, instance 2 LV) LV) LV) LV) LV) LV) LV) LV) LV) LV)

Sequence current measurement, instance 1 HV) HV) HV) HV) HV) HV) HV) HV) HV) HV)

Sequence current measurement, instance 2 LV) LV)

Residual current measurement, instance 1 HV) HV) HV) HV) HV) HV)




Function A B C D E F G H J KResidual current measurement, instance 2 LV) LV) LV) LV)

Three-phase voltage measurement HV) HV) HV) HV) HV)

Residual voltage measurement HV) HV) HV) HV) HV)

Sequence voltage measurement HV) HV) HV) HV) HV)

Three-phase power and energy measurement HV) HV) HV) HV) HV)

RTD/mA measurement o o o o o

= included, = optional at the time of orderHV = The function block is to be used on the high voltage side in the applicationLV = The function block is to be used on the low voltage side in the application

1) Io selectable by parameter and default value is Io measured2) Io calculated is always used3) IoB selectable by parameter, IoB measured as default4) IoB calculated is always used5) Uo selectable by parameter, Uo measured as default6) IoB measured and 3IB are always used7) IoB measured is always used8) IoB calculated and 3IB are always used9) Multi-purpose protection is used, for example, RTD/mA based protection10) Available in IED and SMT but not connected to anything in logic.

3.1.1 Addition of control functions for primary devices and theuse of binary inputs and outputsIf extra control functions intended for controllable primary devices are added to theconfiguration, additional binary inputs and/or outputs are needed to complementthe standard configuration.

If the number of inputs and/or outputs in a standard configuration is not sufficient,it is possible either to modify the chosen IED standard configuration in order torelease some binary inputs or binary outputs which have originally been configuredfor other purposes, or to integrate an external input/output module, for exampleRIO600, to the IED.

The external I/O modules binary inputs and outputs of can be used for the less time-critical binary signals of the application. The integration enables releasing someinitially reserved binary inputs and outputs of the IEDs standard configuration.

The suitability of the IEDs binary outputs which have been selected for primarydevice control should be carefully verified, for example make and carry andbreaking capacity. If the requirements for the primary device control circuit are notmet, using external auxiliary relays should be considered.

3.1.2 LED functionalityThe IED has dynamic programmable LEDs. The presentation of the LEDs in thismanual differs from the actual function blocks in the configurations.



GUID-4576631D-C686-454F-8CF0-DC654779B178 V1 EN

Figure 9: Drawing symbol used in the manual and the default connection ofthe LED function blocks in the configurations



3.2 Connection diagrams

GUID-529F6F95-5742-4D6F-8C55-04F6C14BFD94 V2 EN

Figure 10: Connection diagram for the A and K configurations



GUID-80F82A38-4519-4C09-A25D-86131D51331B V2 EN

Figure 11: Connection diagram for the B configuration



GUID-32E5D770-0A2D-4FF3-9EAF-E7A82DB8A66C V2 EN

Figure 12: Connection diagram for the C and J configurations



GUID-FC955C0D-4BF9-40A8-B953-429DE884FFE1 V2 EN

Figure 13: Connection diagram for the D and J configurations



GUID-D26C5FA8-D7E4-4959-AA36-B77D1A53392C V1 EN

Figure 14: Connection diagram for the E configuration



GUID-787C00E6-BEC2-4612-8183-195E01D9F5EF V

Figure 15: Connection diagram for the F configuration



GUID-AE41CEEF-C6E8-4292-8F0A-A5B962EBBC9C V1 EN

Figure 16: Connection diagram for the G configuration



GUID-4F252355-C97B-4110-8AAF-EB9816A13113 V1 EN

Figure 17: Connection diagram for the H configuration



GUID-59EE9058-5928-4E74-A3C1-3F2C9B6D3EB1 V1 EN

Figure 18: Connection diagram for the E, F, G and H configurations(transformer current differential protection with phase-to-earthvoltage protection and measurement)

3.3 Presentation of standard configurations

Functional diagramsThe functional diagrams describe the IED's functionality from the protection,measuring, condition monitoring, disturbance recording, control and interlockingperspective. Diagrams show the default functionality with simple symbol logicsforming principle diagrams. The external connections to primary devices are alsoshown, stating the default connections to measuring transformers. The positivemeasuring direction of directional protection functions is towards the outgoing feeder.

The functional diagrams are divided into sections with each section constitutingone functional entity. The external connections are also divided into sections. Onlythe relevant connections for a particular functional entity are presented in eachsection.



Protection function blocks are part of the functional diagram. They are identifiedbased on their IEC 61850 name but the IEC based symbol and the ANSI functionnumber are also included. Some function blocks, such as PHHPTOC, are usedseveral times in the configuration. To separate the blocks from each other, the IEC61850 name, IEC symbol and ANSI function number are appended with a runningnumber, that is an instance number, from one upwards. If the block has no suffixafter the IEC or ANSI symbol, the function block has been used, that is,instantiated, only once. The IEDs internal functionality and the externalconnections are separated with a dashed line presenting the IEDs physical casing.

Signal Matrix and Application ConfigurationWith Signal Matrix and Application Configuration in PCM600, it is possible tomodify the standard configuration according to the actual needs. The IED isdelivered from the factory with default connections described in the functionaldiagrams for binary inputs, binary outputs, function-to-function connections andalarm LEDs. The Signal Matrix is used for GOOSE signal input engineering andfor making cross-references between the physical I/O signals and the functionblocks. The Signal Matrix tool cannot be used for adding or removing functionblocks, for example, GOOSE receive function blocks. The ApplicationConfiguration tool is used for these kind of operations. If a function block isremoved with Application Configuration, the function related data disappears fromthe menus as well as from the 61850 data model, with the exception of some basicfunction blocks, which are mandatory and thus cannot be removed from the IEDconfiguration by removing them from the Application Configuration.

3.4 Standard configuration A

3.4.1 ApplicationsThe standard configuration includes three-phase transformer differential protectionfor two-winding transformers, numerical restricted earth-fault protection for the high-voltage (HV) side. The standard configuration is mainly intended for protection ofthe power transformer between current transformers.

The IED with a standard configuration is delivered from the factory with defaultsettings and parameters. The end-user flexibility for incoming, outgoing andinternal signal designation within the IED enables this configuration to be furtheradapted to different primary circuit layouts and the related functionality needs bymodifying the internal functionality using PCM600.



3.4.2 FunctionsTable 11: Functions included in the standard configuration A





















Multi-purpose protection, instance 1 MAPGAPC1 MAP (1) MAP (1)






Control





Function IEC 61850 IEC 60617 IEC-ANSI

Disconnector control, instance 1 DCXSWI1 I O DCC(1)I O DCC(1)


Earthing switch control ESXSWI1 I O ESC I O ESC






Tap changer position indication TPOSSLTC1 TPOSM 84M


Circuit-breaker condition monitoring SSCBR1 CBCM CBCM



Runtime counter for machines and devices MDSOPT1 OPTS OPTM

Measurement

Disturbance recorder RDRE1 - -

Three-phase current measurement, instance 1 CMMXU1 3I 3I

Three-phase current measurement, instance 2 CMMXU2 3I(B) 3I(B)

Sequence current measurement CSMSQI1 I1, I2, I0 I1, I2, I0

Residual current measurement, instance 1 RESCMMXU1 Io In

RTD/mA measurement XRGGIO130 X130 (RTD) X130 (RTD)

3.4.2.1 Default I/O connections

Table 12: Default connections for binary inputs

Binary input Description Connector pinsX110-BI1 Blocking of O/C high stage (high voltage) and

instantaneous stage (low voltage)X110-1,2

X110-BI2 External protection trip X110-3,4

X110-BI3 Circuit breaker low gas pressure indication X110-5,6

X110-BI4 Circuit breaker spring charged indication X110-7,6

X110-BI5 High-voltage side disconnector closed X110-8,9

X110-BI6 High-voltage side disconnector open X110-10,9

X110-BI7 High-voltage side circuit breaker closed X110-11,12

X110-BI8 High-voltage side circuit breaker open X110-13,12

X130-BI1 BCD sign bit (tap changer position) X130-1,2

X130-BI2 BCD bit 1 LSB X130-2,3

X130-BI3 BCD bit 2 X130-4,5




Binary input Description Connector pinsX130-BI4 BCD bit 3 X130-5,6

X130-BI5 BCD bit 4 X130-7,8

X130-BI6 BCD bit 5 MSB X130-8,9

Table 13: Default connections for RDT/mA inputs

Binary input Description Connector pinsX130-AI1 X130-1,2

X130-AI2 X130-3,4

X130-AI3 Ambient temperature X130-5,6,11c

X130-AI4 X130-7,8,11c

X130-AI5 X130-9,10,11c

X130-AI6 X130-13,14,12c

X130-AI7 X130-15,16,12c

X130-AI8 X130-17,18,12c

Table 14: Default connections for binary outputs

Binary output Description Connector pinsX100-PO1 Close high-voltage circuit breaker X100-6,7

X100-PO2 Breaker failure backup trip to upstream breaker X100-8,9

X100-SO1 General start indication X100-10,11,(12)

X100-SO2 General operate indication X100-13,14

X100-PO3 Open circuit breaker/trip coil 1 high voltage X100-15-19

X100-PO4 Open circuit breaker/trip coil 2 low voltage X100-20-24

X110-SO1 Overcurrent operate alarm X110-14,15,16

X110-SO2 Differential protection operate alarm X110-17,18,19

X110-SO3 Earth fault operate alarm X110-20,21,22

X110-SO4 Thermal overload and negative phase-sequenceprotection operate alarm

X110-23,24

Table 15: Default connections for LEDs

LED Description1 Transformer differential protection biased stage operate

2 Transformer differential protection instantaneous stage operate

3 Non-directional overcurrent protection operate

4 Restricted earth-fault protection operate

5 Earth fault protection operated

6 Circuit failure protection backup trip operated

7 NPS or thermal overload protection operated




LED Description8 Disturbance recorder triggered

9 TCS, fuse failure, measuring circuit fault or circuit breaker supervision

10 Arc protection operate

11 Protection trip from external device

3.4.2.2 Default disturbance recorder settings

Table 16: Default analog channel selection and text settings

Channel Selection and text1 IL1

2 IL2

3 IL3

4 IL1B

5 IL2B

6 IL3B

7 Io

8 -

9 -

10 -

11 -

12 -

Additionally, all the digital inputs that are connected by default are also enabledwith the setting. Default triggering settings are selected depending on theconnected input signal type. Typically all protection START signals are selected totrigger the disturbance recorded by default.

3.4.3 Functional diagramsThe functional diagrams describe the default input, output, alarm LED and function-to-function connections. The default connections can be viewed and changed withPCM600 according to the application requirements, if necessary.

The analog channels have fixed connections towards the different function blocksinside the IEDs standard configuration. Exceptions from this rule are the 12analog channels available for the disturbance recorder function. These channels arefreely selectable and a part of the disturbance recorders parameter settings.

The analog channels are assigned to different functions. The common signalmarked with 3I represents the three phase currents of the high-voltage side of thetransformer and 3IB represents the three phase currents of the low-voltage side of



the transformer. The signal marked with Io represents the neutral current measuredbetween the start point of the transformer and grounding on the high voltage side.

3.4.3.1 Functional diagrams for protection

The functional diagrams describe the IEDs protection functionality in detail andpicture the factory set default connections.

GUID-924EE5B6-2E53-4547-AFEC-2BF37660AA66 V2 EN

Figure 19: Stabilized and instantaneous differential protection for 2Wtransformers

The stabilized and instantaneous differential protection for 2Wtransformers(TR2PTDF1) provides protection of power transformer unit including, forexample, winding short-circuit and interturn faults. The IED compares the phasecurrents on both sides of the object to be protected. If the differential current of thephase currents in one of the phases exceed the setting of the stabilized operationcharacteristic or the instantaneous protection stage of the function, the functionprovides an operate signal.

For transformers having an on-line tap changer, the tap position information isrecommended to be used in differential protection, as the ratio difference of tapchanger movements can be corrected in TR2PTDF.



All operate signals are connected to the Master Trip 1 and 2 and also to the alarmLEDs. LED 1 is used for biased low-stage operate indication and LED 2 forinstantaneous high-stage of the differential protection.

GUID-1C4B6EFB-C39F-4D99-832A-F141FFBCBA9F V3 EN

Figure 20: Overcurrent and short-circuit protection



Three stages for both high-voltage and low-voltage sides as a total of sixovercurrent stages are offered for overcurrent and short-circuit protection. The high-voltage side high stage (PHHPTOC1) can be blocked by energizing the binaryinput 1 (X110:1-2) or by starting the high stage of the low-voltage side(PHHPTOC2). Also the low-voltage side instantaneous stage is blocked byactivating the binary input (X110_BI1).

A selective backup overcurrent protection can be achieved by using blockingsbetween high-voltage side and low-voltage side overcurrent stages. This kind ofblocking scheme enables coordinated overlapping of overcurrent protection zones.

The operate of the overcurrent protection functions is connected to the output SO1(X110:14-15-16). This output is used for giving a specific alarm of the overcurrentprotection operation.

GUID-16AE196B-0ED9-478B-91FB-70CF4A9C0B23 V2 EN

Figure 21: Non-directional earth-fault protection

Two stages are offered for non-directional earth-fault protection. The earth-faultprotection measures the neutral current of the high-voltage side.

All operate signals are connected to the Master Trip as well as to the alarm LEDs.LED 5 is used for non-directional earth-fault protection operate indication.

GUID-A8AB50BA-0D0A-454D-860C-2C721B3793F3 V2 EN

Figure 22: Restricted low-impedance earth-fault protection



The configuration includes restricted low-impedance earth-fault protection functionfor high-voltage side of two-winding power transformers (LREFPNDF1). Thenumerical differential current stage operates exclusively on earth faults occurringin the protected area, that is, in the area between the phase and neutral currenttransformers. An earth fault in this area appears as a differential current betweenthe residual current of the phase currents and the neutral current of the conductorbetween the star-point of the transformer and earth.

GUID-BEC39E21-713A-434C-88E5-702CA4622699 V2 EN

Figure 23: Negative-sequence overcurrent protection

NSPTOC is designed for negative-phase sequence protection whenever theoperating characteristic is appropriate. It is applied for the protection oftransformers against thermal stress and damage.

NSPTOC1 measures negative-sequence current from the high-voltage side andNSPTOC2 from the low-voltage side.

GUID-B4800F23-400A-40DF-BAED-A99B116638A5 V3 EN

Figure 24: Three-phase thermal overload protection for power transformers

Three-phase thermal overload protection for power transformers (T2PTTR1)provides indication on overload situations. The operate signal of the thermaloverload protection is connected to the Master Trip 2. LED 7 is used for the



thermal overload protection alarm indication, the same as for negative-sequenceovercurrent protection operate indication.

GUID-C9527B95-0F59-42C3-A0D1-B468DD54B465 V2 EN

Figure 25: Circuit-breaker failure protection

The circuit-breaker failure protection (CCBRBRF1) is initiated via the start inputby a number of different protection stages in the IED. CCBRBRF1 offers differentoperating modes associated with the circuit-breaker position and the measuredphase and residual currents.

CCBRBRF1 has two operating outputs: TRRET and TRBU. The TRRET operateoutput is used for retripping both the high-voltage and low-voltage side circuitbreakers through Master Trip 1 and 2. The TRBU operate output signal isconnected to the output PO2 (X100: 8-9). LED 6 is used for backup (TRBU)operate indication.



GUID-42911654-7FC8-4A91-8E52-89E062039C69 V2 EN

Figure 26: Arc protection

Arc protection (ARCSARC1...3) is included as an optional function.

The arc protection offers individual function blocks for three arc sensors that canbe connected to the IED. Each arc protection function block has two differentoperation modes, with or without the phase and residual current check. Operatesignals from the arc protection function blocks are connected to the Master Tripand also to the alarm LED 10 as a common operate indication.



3.4.3.2 Functional diagrams for disturbance recorder and supervisionfunctions

GUID-96BB51D1-DB86-49BE-A5FE-25B304403C59 V2 EN

Figure 27: Disturbance recorder

All start and operate signals from the protection stages are routed to trigger thedisturbance recorder or alternatively only to be recorded by the disturbancerecorder depending on the parameter settings. Additionally, the ARC protectionsignals and the four binary inputs from X110 are also connected.



GUID-F8B12B36-DF24-4907-8288-814A7C34D70E V2 EN

Figure 28: Trip circuit supervision

Two separate trip circuit supervision functions are included, TCSSCBR1 for PO3(X100:15-19) and TCSSCBR2 for PO4 (X100:20-24). Both functions are blockedby the Master Trip (TRPPTRC1 and TRPPTRC2) and the circuit breaker opensignal. The TCS alarm indication is connected to LED 9.

By default it is expected that there is no external resistor in thecircuit breaker tripping coil circuit connected parallel with circuitbreaker normally open auxiliary contact.



3.4.3.3 Functional diagrams for control and interlocking

GUID-FCB8739C-C3C7-4994-BAC6-18BA323962F7 V2 EN

Figure 29: Master Trip

The operate signals from the protections are connected to the two trip outputcontacts PO3 (X100:15-19) and PO4 (X100:20-24) via the corresponding MasterTrips TRPPTRC1 and TRPPTRC2. Open control commands to the circuit breakerfrom local or remote CBXCBR1-exe_op are connected directly to the output PO3(X100:15-19).

TRPPTRC1 and 2 provide the lockout/latching function, event generation and thetrip signal duration setting. If the lockout operation mode is selected, one binaryinput can be reassigned to the RST_LKOUT input of the Master Trip to enableexternal reset with a push button.

The external trip indication is connected also to the alarm LED 11.



GUID-0D5A94B8-8D06-4710-8B97-31D9C05FAAA4 V2 EN

Figure 30: Disconnector position indication

There are two types of disconnector and earthing switch blocks available.DCSXSWI1...3 and ESSXSWI1...2 are status only type, and DCXSWI1...2 andESXSWI1 are controllable type. By default, the status only blocks are connected instandard configuration logic. If controllable operation is preferred, the controllabletype of disconnector and earthing switch blocks can be used instead of the statusonly type. The connection and configuration of the control blocks can be doneusing PCM600.

The binary inputs 5 and 6 of the additional card X110 are used for busbardisconnector (DCSXSWI1) or circuit-breaker truck position indication.

Table 17: Device positions indicated by binary inputs 5 and 6

Primary device position Input to be energized Input 5 (X110:8-9) Input 6 (X110:10-9)

Busbar disconnector closed x

Busbar disconnector open x

Circuit breaker truck in service position x

Circuit breaker truck in test position x

The circuit breaker closing is enabled when the ENA_CLOSE input is activated.The input can be activated by the configuration logic, which is a combination ofthe disconnector position status and the statuses of the master trip logics and gaspressure alarm and circuit-breaker spring charging. The OKPOS output from theDCSXSWI block defines if the disconnector or the breaker truck is definitely either



open (in test position) or close (in service position). This, together with non-activetrip signal and non-active gas pressure alarm, activates the close-enable signal tothe circuit-breaker control function block. The open operation is always enabled.

The ITL_BYPASS input can be used, for example, to always enable the closing ofthe circuit breaker when the circuit breaker truck is in the test position, despite ofthe interlocking conditions being active when the circuit breaker truck is closed inservice position.

If the ENA_CLOSE and BLK_CLOSE signals are completelyremoved from the breaker control function block CBXCBR withPCM600, the function assumes that the breaker close commandsare allowed continuously.

The circuit breaker condition monitoring function (SSCBR) supervises the circuitbreaker status based on the binary input information connected and measuredcurrent levels. The function introduces various supervision methods. Thecorresponding supervision alarm signals are routed to LED 9.



GUID-EF27034F-786A-460C-9350-6A2E02C4A3BC V3 EN

Figure 31: Common alarm/indication 1 and 2

The signal outputs from the IED are connected to give dedicated information on:

Start of any protection function SO1 (X100:10-12) Operation (trip) of any protection function SO2 (X100:13-15) Operation (trip) of any stage of the overcurrent protection function SO1

(X110:14-15-16) Operation (trip) of differential protection function SO2 (X110:17-18-19) Operation (trip) of any stage of the earth-fault protection function SO3

(X110:20-21-22) Operation (trip) of thermal or current negative-sequence protection function

SO4 (X110:23-24)

TPGAPC are timers and used for setting the minimum pulse length for the outputs.There are four generic timers (TPGAPC1..4) available in the IED. The remaining



ones not described in the functional diagram are available in PCM600 forconnection where applicable.

GUID-F78772E5-8513-4422-B928-5B6D7C97B828 V2 EN

Figure 32: Tap changer position indication

To increase the sensitivity of the stabilized differential function, the tap positioninformation from the tap changer is connected to the IED via the tap changerposition indication function TPOSSLTC1. TPOSSLTC1 is connected to the binaryinputs of the X130 BIO card or alternatively to the mA input of the RTD card.TPOSSLTC1 uses binary-coded methods to generate the integer value of the tapchanger position.

3.5 Standard configuration B

3.5.1 Applications

The standard configuration includes three-phase transformer differential protectionfor two-winding transformers and numerical restricted earth-fault protection for thelow-voltage (LV) side. The standard configuration is mainly intended forprotection of the power transformer between current transformers.

The IED with a standard configuration is delivered from the factory with defaultsettings and parameters. The end-user flexibility for incoming, outgoing andinternal signal designation within the IED enables this configuration to be furtheradapted to different primary circuit layouts and the related functionality needs bymodifying the internal functionality using PCM600.



3.5.2 Functions

Table 18: Functions included in the standard configuration B



























Control





Function IEC 61850 IEC 60617 IEC-ANSI


Disconnector control, instance 2 DCXSWI2 I O DCC(2)I O DCC(

transformer protection and control ret615 application manual · manual must satisfy themselves that...

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