grid operations & planning€¦ · grid operations & planning r&d area overview. 2 ......

© 2016 Electric Power Research Institute, Inc. All rights reserved.

Daniel Brooks

Speaker’s Job Title

Sept 2016 Advisory Committee

2016 Sept 19: Hollywood, FL

Grid Operations & PlanningR&D Area Overview

2© 2016 Electric Power Research Institute, Inc. All rights reserved.

Grid Operations & Planning R&D Area at a Glance

Grid Operations • Advanced Operator Visualization

• Alarm Management

• Synchrophasor Applications

• Operating Limit Assessment

• VAr/Voltage Management & Control

• System Restoration Support

Grid Planning • Modeling & Model Validation

• System Protection

• Risk-Based Planning

• Contingency Screening

• Cascading Event Analysis

• Special Studies (GMD, TOV, etc.)

Model Development & Validation

Reliability Analysis Methods/Tools

Economic Analysis Methods/Tools

Decision Support Methods/Tools

Operator/Planner Reference Guides

Common approach to all programs

Market Operations

• Market Design

• Market Software Implementation

• Price Formation

• Energy, Ancillary Services, FTRs,

Capacity

Bulk Renewables Integration

• Modeling & Protection

• Flexibility Planning

• Op Tools for Variability & Uncertainty

• Voltage & Frequency

• DER Impacts on Bulk System


F

3.9

2.3

1.9

4.1

1.92.2

4.1 3.9

2.4

0

1

2

3

4

P39 P40 P173

2014

2015

2016

Collaboration, Leverage, & Member Engagement

Task Force Participation

R&D Area Funding Trend Program Funding/Leverage Trends

0.0

4.0

8.0

12.0

2014 2015 2016 YTD

8.1 8.310.4

2.1 2

0.9

Supp

ARP

$M

$M

0

50

100

150

200

2014 2015 2016 YTD

38 48 48

140

170151

Companies

Participants

New in 2016 Total ARP Funders

32

37

42

Total GO&P

40

36

44

2014 2015 2016• ESB Networks

• Exelon

• Georgia Trans. Co.

• ITC

• LADWP

• National Grid

• Portland General

• PSE&G

• Xcel Energy


Key GO&P Research Areas

Resiliency and Restoration

Situational AwarenessRenewables/DER Integration

0.00

0.10

0.20

0.30

0.40

0.50

0.60

0.70

0.80

0.90

1.00

1.10

1.20

1.30

0.01 0.1 1 10 100 1000

Vol

tage

(p.u

.)

Time (s)

pHVRT ORaHVRT - "as you were"

Tripped

1.30 p.u. 1.30 p.u.0.16 s

13 s

1.10 p.u.1.20 p.u.

0.00 p.u.

0.88 p.u.

0.00 p.u.

0.50 p.u.

21 s

Continuous Operation

aLVRT - "as you were"

aLVRT - "as you were"

OR

pLVRT

Tripped

0.16 s

0.32 s2 s

2 s

21 s

1

2

1

Legend

range of adustability

default value

must-trip zones

voluntary ride-through

mandatory ride-throughand operating regionsdescribing performance

Ride-through or trip is allowed(voluntary ride-through)

voluntaryride-through

Ride-through ortrip is allowed

(voluntary ride-through)

0.88 p.u.

NERCPRC-024-2

0.15 s

Category II(EPRI Proposal)

Modeling & Model Validation

LD1PAC

model


Key GO&P Research Areas – T&S Relationship

Resiliency and Restoration

1. GMD study guidelines

2. Resiliency investment

decision framework

3. Optimized restoration plans

& real-time ops

Situational Awareness

1. Alarm management

2. Ops protection visualization

3. Integrating equipment health

into ops

Renewables/DER Integration

1. Protection models for

inverter-based resources

Modeling & Model Validation

1. HVDC models


GO&P Transmission System Protection Research

System Protection

Tools (40.18)

•Modeling protection in Planning

•Post-Fault Analysis tools

•Emerging protection guidelines

•Relay setting Evaluation Tools

Station A Station B

Station C (tapped)

Wind/PV Protection

Impacts (173.09)

•Wind/PV short-circuit models

•Protection Guideline for systems

with high wind/PV penetrations

Gearbox

Grid

Step down

transformer

Wind

turbine

iPMSG

Stator-Side

ConverterGrid-Side

Converter

ig

IL , PL

Online Protection

Security Assessment (39.11)

•Operator awareness of protection

system status change/failures

•Ops support engineer fault

analysis

Station A

Station B

Station C

Station D

Backup

Protection

Operates

Relay trips, CB opens

• 0.055 s: Station D: Station A TRIP

• 0.350 s: Station B: Station A TRIP

• 0.350 s: Station C: Station A TRIP

• Station A load lost

Standalone distance relay fails in service

EMS Alarm: “Station A - Station B Main 1 Relay Fail”


Protection Relay Settings Evaluation Tool

Evaluate coordination of

protection across whole grid

– Applies multiple fault types

across all lines on a grid

Flags relay misoperations,

fast/slow trips, uncleared faults

View results in web browser &

store in database for simple

reporting, trending over time

Proactively identify & avert

potential mis-operations!

CAPE Macro released 2015, ASPEN Macro due 2016


Define Fault Study and Protection Criteria

Study grid by voltage

class, region, or # buses

of a selected busbar

Study various fault

scenario combinations:

• System scenarios

• Fault Types

• Fault Locations

Define critical protection

performance metrics


System Simulator

Station A

Station B

Station C

Station D

Fault occurs


System Simulator – First CB opens

Station A

Station B

Station C

Station D


Fault occurs

• 0.055 s: Station D: Station A, GR_IOC


System Simulator – Second CB opens (mis-op)

Station A

Station B

Station C

Station D

Misoperation of

Protection

Fault occurs



• 0.075 s: Station C: Station A, GR_IOC


System Simulator – Third CB opens, fault cleared

Station A

Station B

Station C

Station D

Fault occurs



• 0.075 s: Station C: Station A, GR_IOC

• 0.418 s: Station A: Station D, Z2_G

Misoperation of

Protection


CAPE/ASPEN Macros – Results – Web Browser

• Output file in XML file format; View

in Web Browser, Excel, Access

• High-level results per fault; index to

details if issues identified


Grid Ops & Planning HVDC Research

2016 HVDC Ops & Planning Activities

162-D: apply planning guide in example studies

– Update planning guide base on studies

P40.016 dynamic (stability) model development work on Sched

39.015: HVDC as actuator for Power Oscillation Damping

HVDC Ops & Planning Activities Going Forward

40.016: Complete VSC model; multi-terminal HVDC

39.013: HVDC as blackstart resource

40.018: System protection with HVDC


EPRI HVDC Modeling Efforts -- P40.016 Modeling & Validation

Power-flow – Previously existed

Dynamics (95% done)

– PowerTech Labs TSAT Beta complete

– Siemens PTI PSS®E Beta near complete

– GE PSLF Beta near complete

– PowerWorld Beta near complete

+

_

-

+

Id1

Id2

Id1 – Id2

(ground return current)

Rectifier Station

To ac system To ac system

Filter Banks Filter Banks

Inverter Station

1:Tr

1:Tr 1:Ti

1:Ti

Idc

To ac system To ac system

Filter Banks Filter Banks

Vdcr

Rdc

Vdci

P (MW)

Q (MVAr)

Capacitive VarsInductive Vars

Inverter action

Rectifier action

MW

into grid

MW

from grid

Conventional Line-Commutated

VSC-HVDC

First Tackling Point-to-Point HVDC Models

Power-flow – Complete in all platforms

Dynamics (95% done)

– Prelim. specs discussed at WECC TF

– Initial feedback: ABB, Siemens and GE

– Draft model specs by Nov 2016


Equip planners to evaluate HVDC for

economic & reliability transmission

Summary of HVDC technologies

Potential Applications & benefits

HVDC Interaction with AC grid

Guidance on required studies

Scope and Objective:

Point-to-point & Multi-terminal

Highlight and explain important HVDC

planning/study considerations

Doesn’t cover all aspects in great

detail

PS162-D: HVDC Planning Guidelines

2015 Concise report that outlines HVDC planning considerations

2016+ Case study to apply report for various study efforts


Together…Shaping the Future of Electricity

grid operations & planning€¦ · grid operations & planning r&d area overview. 2 ......

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