7th conference on advances & innovations in …

7TH CONFERENCE ON ADVANCES & INNOVATIONS IN SUBSTATIONS 25-26 JULY 2019 CBIP DELHI

ADVANCES AND INNOVATIONS IN SUBSTATIONS

Digital GIS Substation and Eco-efficient GIS

ANURAG PANDIT and DHRUVI SHUKLA

July 26, 2019 Slide 2

Agenda

Introduction and

Overview Digital substation Digital GIS Substation

Conclusion Eco-efficient GIS Questions /Answers

Myself, Anurag Pandit, Post graduated in High Voltage Engineering from Govt Engineering College Jabalpur, Joined ABB India Limited in 2008, currently working as Head of Engineering for GIS PASS unit.

I have around 13+ years of relevant experience in HV switchgear industry.

Presented and published several technical papers on various topics including HV GIS, Hybrid Switchgears.

My areas of interest includes hybrid and gas insulated switchgear technology, Life cycle cost assessment, renewable energy,EHV systems, lean manufacturing and Lean Engineering.

Email : [email protected]

LinkedIn : linkedin.com/in/anurag-pandit-4a219213

Anurag Pandit

Presenter Profile


mailto:[email protected]







https://www.linkedin.com/in/anurag-pandit-4a219213










Dhruvi Shukla, graduated from SVIT, Vasad, presently working with GIS PASS Unit, ABB India Limited, Savli, Vadodara as Engineering Manager.

She has approximately 5 years of experience in Project Engineering of AIS, Hybrid and Gas Insulated Switchgears.

Her areas of interest include hybrid and gas insulated switchgear technology, Substation Engineering, New Technologies.

Email : [email protected]

LinkedIn : https://www.linkedin.com/in/dhruvi-shukla-2b7419124/

Dhruvi Shukla

Presenter Profile










https://www.linkedin.com/in/dhruvi-shukla-2b7419124/














Introduction and Overview


• Increasing demand on refurbishment of substations

• Project execution under increasing cost and time pressure

• Better utilization of existing assets

• Extraction of real time data.

• Minimum availability of space

• Safeguard investment over the entire life cycle

• Environment Friendly

• Safety

• Aesthetics

Challenges faced by today’s substation

Introduction and Overview


An answer to today’s substation challenges – Gas Insulated Switchgear (GIS)

1 Compact and modular with proven reliability

2 Low space requirement

3 Low environmental impact and lifecycle costs

4 No environmental constrains

5 Reduced installation and commissioning time

6 High quality standards and safety

7 Substation security and aesthetics

8 Advanced features for digital substation

Digital Substation


• The Digital Substation is a term applied to electrical substations where operation is managed between distributed intelligent electronic devices (IEDs) interconnected by communications networks.

• Digital substations remove the last electrical connection between the high voltage equipment and the protection and control panels, creating a safer work environment, while reducing the costs for building, land, engineering, commissioning, operation and maintenance of the system.

Powerful Combination-Bridging the gap between analogue and digital

Digital Substation


Digital Interfaces

Digital Substation


• Up to 80% copper cable reduction*

Unseen opportunities for modern utilities

• Up to 40% shorter installation phase**

• Up to 60% less space in the relay house* • Operational cost reduction***

—

* Based on a typical

conventional 400kV

double busbar AIS

substation compared

to a modern variant

using SAM600 process

bus I/O system and

FOCS integrated

in disconnecting

circuit breakers.

—

** Of new secondary

systems.

—

*** During secondary

system retrofits.

Digital GIS Substation

July 26, 2019 LCC = Local Control Cubicle IED = Intelligent Electronic Device Slide 10

1. Substation automation protection and control system with IEC61850-8-1 station bus and connected communication system

5. Stand-alone merging units, bridging the gap between analog and digital world. Compliant to IEC 61850-9-2

2. Fully digital LCC with IEDs for control and protection plus monitoring functions

3. IEC 61850-9-2 process bus, connecting the switchgear components to the protection and control system

4. Non-conventional instrument transformers reduce substation wiring complexity, increase safety and provide late customization

GIS portfolio for digital substation


July 26, 2019

CT = current transformer VT = voltage transformer NCIT = Non-conventional instrument transformer

Slide 11

Past Present From conventional CT, VT to NCITs

Evolution of conventional VTs and CTs

Sensors for current and voltage

New applications like combined current and voltage NCITs for

metering and protection

Standardized integration of protection, control and metering

with IEC 61850

Evolution of Instrument Transformers

Evolution of Local Control Cubicles (LCC)



• The key element for the GIS is a fully digital local control cubicle (LCC) with intelligent electronic devices (IED) like binary control units or protection units plus monitoring devices.

• All IEDs are connected to the substation automation bus.

• All main functions are integrated into the IED via configuration of the software.

• So, the main difference between conventional and digital LCC is that the interlocking and mimic is a complex electrical circuit for former while in latter these all are implemented into the binary control unit using a configuration. Integrated LCC with

control and monitoring

Intelligent Electronic Devices (IEDs)


July 26, 2019 IED = Intelligent Electronic Device Slide 13

– Control and protection IEDs in integrated and fully digital local control cubicles

– IEDs with digital interfaces for IEC61850-8-1 and -9-2

• Relion series for control and protection

• Busbar protection REB 500

• Point-on-wave switching Switchsync PWC600

– Preconfigured and tool- based configuration with

• IET600 (integrated engineering tool for IEC 61850 systems)

• ITT600 (integrated testing tool for IEC 61850 systems)

• PCM600 (protection and control IED manager)

Monitoring Devices


July 26, 2019 * a product of Power Diagnostix Slide 14

Sensible set of monitoring functions with

– MSM for SF6 monitoring

– CBS for circuit-breaker monitoring

– GIS monitor for partial discharge monitoring*

Monitoring overview



Function Condition Process Data Applies to

Operation counter Lifetime/Maintenance scheduling Operation counter, Time since last maintenance

All switching devices

Operating mechanism condition Mechanical failures or malfunction Moving and reaction time All switching devices

Contact wear estimation Contact wear caused by fault clearing Fault current, arcing time Circuit breaker

Pump condition Leakages, Pump motor failures Pump starts, oil fill level Circuit breaker operating mechanism

Gas density measurement & trend calculation

Leakages of gas compartment Gas density Gas compartments

Arc detection Internal flash-over Optical arc detection Gas compartments

Partial discharge Partial discharge UHF Gas compartments

Device supervision (self supervision) Device malfunction Watchdog signal All electronic devices


July 26, 2019 SA = Substation automation Slide 16

Past Present From wired to optical communication

SA conventional

Control room

SCADA

Distribution, protection, control

Copper cables

Copper cables

Copper cables

GIS

Bay cubicle

SA with station bus

Gateway HMI

Copper cables

GIS

Bay cubicle

to other bays

Optical communication network

IEC 61850 Station bus

SA with process bus

GIS

Copper or glassfibre cables Bay cubicle

Gateway HMI

to other bays

Optical communication network

IEC 61850 Station bus

IEC 61850 Process bus

Sensors, actuators

GIS drives have conventional control signals

Evolution of Substation Automation (SA)

Providing value to our customers


July 26, 2019

LCC =Local Control Cubicle CT = Current Transformer IED = Intelligent Electronic Device VT = Voltage Transformer NCIT = Non-Conventional Instrument Transformer

Slide 17

Installation phase

Material reduction

Less P&C panels, cabling & cable engineering. Less CT/VT cores, space reduction

Standardized and factory-tested panels

Building blocks, e.g. analog and binary IO kiosks

Late customization, even after project delivery

All communication digital based on IEC61850

Outage time reduction

Faster installation through pre-tested process bus systems

Standardized and space

effective LCCs

IEDs enable late customization

NCIT – one for multiple

requirements

CT/VT connected via SAM600

Smaller dimensions means less SF6 (4-15% less SF6)

NCIT enable material reduction (5-12% less weight)

Reduced footprint with digital control

Reduced cabling from GIS to

external

IEDs enable digital commissioning

Smaller dimensions can reduce GIS

footprint (0-50% less space)

NCIT – configurable ratings, no trouble

with burden

Providing value to our customers


July 26, 2019

LCC =Local Control Cubicle CT = Current Transformer IED = Intelligent Electronic Device VT = Voltage Transformer NCIT = Non-Conventional Instrument Transformer

Slide 18

Operational phase

Easier maintenance

Upgrading equipment with less need for outages

Increased safety

Digitizing all signals right at their source reduces the risk of electrical hazards

Effective maintenance

More supervision knowing better what & where equipment failed

Standardized process interface

Fast replacement process and bay electronics during primary equipment lifetime

CT/VT connected via SAM600

IEDs enable digital signals

MSM, CB and PD Monitoring

Clear interface between LCC

and drives

IEDs enable digital upgrades

Standardized space effective LCCs

NCIT enable digital signals

NCIT electronics are easy to change

Primary sensors of NCIT does not need any re-calibration

SF6 as an insulation and switching medium in electrical switchgear

July 26, 2019

*GWP- The global warming potential describes how much heat a greenhouse gas traps in the atmosphere. It compares the amount of heat trapped by a certain mass of the gas in question to the amount of heat trapped by a similar mass of carbon dioxide. GWP is expressed as a factor of carbon dioxide.

Slide 19

Eco-efficient GIS

• The key technical parameters for an insulation gas in switchgear are its dielectric strength and arc quenching capabilities. For use in GIS, there are other, less obvious, but equally important properties – such as low boiling point, low toxicity, stability, low flammability, zero ozone depletion potential (ODP) and very low global warming potential (GWP*).

• For decades, the unique properties of sulfur hexafluoride (SF6) have made it popular as an insulation and switching medium for electrical switchgear. However, SF6 is a greenhouse gas and there are life-cycle management costs associated with its use.

Technology breakthrough in GIS as an alternative to SF6 gas


Eco-efficient GIS

• Technology breakthrough in GIS took place when Fluoroketone based gas mixture, an alternative to SF6 was developed to substantially lower down carbon dioxide (CO2) equivalent emissions by up to 50% over the product life cycle.

• The CO2 emissions consists of approximately 50% from raw materials, manufacturing and energy losses, and 50% from SF6 emissions based on a 30-year service life.

• GWP of new gas mixture is almost 100% lower than GWP of SF6.

Video


Eco-efficient GIS

Benefits of Digital GIS substations

Conclusion


Upon using digital GIS substations, it is elicited that depending on customer requirements and layouts, customers benefit

– Up to 35% less footprint with digital HV GIS

– Up to 20% less costs with digital HV GIS

– Cost savings due to late customization for digital HV GIS create a benefit of less extra charges and less required additional time for the delivery. This includes the total value chain from the order to installation & commissioning

– Connected Asset Management System support reducing customer efforts for maintenance management and reduce service as well as outage times

– Increased safety support reduction of work accidents as secondary circuits need not to be changed during the operation of HV GIS

Benefits of Eco-efficient GIS

Conclusion


Eco-efficient GIS is advantageous considering underneath facts-

– Regulatory procedures for SF6 such as maintaining inventory, special requirements in gas handling, filling and decommissioning of the equipment will be avoided.

– Savings can be made in SF6 related taxes which are applicable in some countries.

– The new has mixture is the only one available so far that has been type tested according to IEC standards which meets performance criteria and has a GWP ≤ 1.

7th conference on advances & innovations in …

Documents