engineering a sustainable future 1 ercot voltage ride-through study workshop june 26 th, 2009
TRANSCRIPT
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Engineering a sustainable future1
ERCOT Voltage Ride-Through Study Workshop
June 26th, 2009
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Engineering a sustainable future2
Agenda
PB Introduction
VRT Study Scope
Data Requirement from Wind
generator Owners
Data Requirement Schedule
Q&A
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Engineering a sustainable future3
Agenda
PB Introduction
VRT Study Scope
Data Requirement from Wind
generator Owners
Data Requirement Schedule
Q&A
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Engineering a sustainable future4
PB – working with clients worldwide and meeting their needs for over 100 years
Comprehensive project management services and technical excellence - helping clients deliver sustainable solutions
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PB Power Worldwide
Capabilities
BostonBoston
San Francisco
San Francisco
Kuwait / UAE
Kuwait / UAE
SingaporeSingapore
NewcastleNewcastle
Major PowerTechnical Centers
Dallas / HoustonDallas / Houston
Wellington/AucklandWellington/Auckland
Manchester / Godalming
Manchester / Godalming
New YorkNew York
BrisbaneBrisbane
Global expertise - local understanding
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Engineering a sustainable future6
VRT Study Team
Mandhir Sahni, PhD
Yunzhi Cheng
Project ManagerSunil Talati, P.E.
Phase I
Mandhir Sahni, PhDYunzhi Cheng
Phase III
Lloyd Pasley
Phase II
ERCOTProject Managers
John Schmall, P.E.José Conto
QA/QCJeyant Tamby, PhD-Sungard
Principal-In-ChargeEric C. Swensen, P.E.
Other Support Staff
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Engineering a sustainable future7
ERCOT
WGRs
PB
Communication Protocols
For
Dat
a C
olle
ctio
n O
nly
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Engineering a sustainable future8
NDAs
ERCOT
WGRsPB
Equipment Manufactures
PB will share data with ERCOT
Microsoft Word Document
PB’s Standard NDA
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Engineering a sustainable future9
Agenda
PB Introduction
VRT Study Scope
Data Requirement from Wind
generator Owners
Data Requirement Schedule
Q&A
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Engineering a sustainable future10
VRT Study Overview
Determine if there are any system reliability risks associated with existing wind plants (with an IA signed prior to November 1, 2008) that do not comply with ERCOT VRT requirements
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Engineering a sustainable future11
VRT Study OverviewPhase I
Dynamic simulations utilizing existing ERCOT model data set
High wind – High load High wind – Low load
Phase II Verify wind plant modeling and develop model
improvements as necessaryPhase III
Dynamic simulations utilizing updated models based on model verification
Test sensitivities and mitigation as necessary
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Engineering a sustainable future12
Project Schedule
Phase I Completion by September 2009
Phase II Completion by December 2009
Phase III Completion by April 2010
VRT Study Overview
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Engineering a sustainable future13
Phase I Study Cases System Topology
SSWG 2009 DSA Fall Cases ~9400 MW Wind Capacity
High Wind – High Load Scenario ~58000 MW ERCOT System Load ~4800 MW Wind Output (West Texas) N-1 Security Constrained Generation Dispatch
High Wind – Low Load Scenario ~36000 MW ERCOT System Load ~4300 MW Wind Output (West Texas) N-1 Security Constrained Generation Dispatch
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Engineering a sustainable future14
Contingency Selection
It is necessary to select a limited set of contingencies
for dynamic simulation
Single Line/Double Circuit Contingencies Three-Phase Faults with Normal Clearing Single-Phase Faults with Delayed Clearing (Breaker
Failure)
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Engineering a sustainable future15
Contingency Selection
Contingency Selection Process Fault Analysis
Identify fault locations that cause the greatest voltage drop at wind plant POIs
AC Contingency Analysis Identify contingencies that result in the lowest
post-contingency voltages Identify contingencies that result in the greatest
decrease in voltage
PV Analysis Identify contingencies that are most critical with
respect to voltage stability West Texas export transfer scenarios
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Engineering a sustainable future16
Wind Plant Model Verification
Network Additions• Collector System
Equivalent• Pad-Mounted
Transformer
Equivalent• Shunt Devices &
Control Schemes
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Engineering a sustainable future17
Phase II Process
PB Will Collect Modeling DataDirectly From Wind Plant Owners
Model Development for ALL Wind Plants
Wind Plant Model Will Require Some Form of Owner “Approval”
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Engineering a sustainable future18
Phase III ProcessPerform Dynamic Simulations Utilizing
Enhanced Wind Plant Models
Evaluate Up To Six Additional Scenarios Variation in generation dispatch
(conventional and/or wind)? VRT capability added to wind plants? Addition of reactive resources? Variation in the load model?
Scenario Selection Dependent on Initial Simulation Results
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Engineering a sustainable future19
Agenda
PB Introduction
VRT Study Scope
Data Requirement from WGRs
Data Requirement Schedule
Q&A
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Engineering a sustainable future20
Phase II Steps Step 1 – Build Consensus
Data Request Forms (DRF) approval from ERCOT and TSPs
Sign confidentiality agreements with equipment vendors and WGRs
Step 2 – Conduct Workshop Conduct Workshop with WGRs
Step 3 - Collect and Validate data submitted by WGRs Existing WGR models for operating units WGR models for planned units
Step 4 – Prepare Equivalent Circuit for individual WGR units
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Engineering a sustainable future21
Phase II Scope Limited to ALL WGRs
with an IA signed prior to Nov 1, 2008 Accurate and complete data submittal is
essential Source of information:
ERCOT Wind Data Forms and Models – information submitted during the interconnection study phase
Resource Asset Registration Forms (RARF)
LVRT Status Survey Design / Construction documents
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Engineering a sustainable future22
General Information
Submittal Information Date format shall be MM/DD/YYYY Resource Entity name must match ERCOT’s record
Resource Entity Authorized Representative As registered with ERCOT Responsible for submission of RARF to ERCOT
Primary Contact / Technical Contact Site or facility contact for Generation Resources May be Authorized Representative
Provide your contact information by Monday, June 29th, 2009.
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Engineering a sustainable future23
Facility One Line DiagramTSP Substation Data
Transmission Line Data
Relaying and Protection Scheme
Transformer DataCollector System Substation Data
Collector System Data
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Engineering a sustainable future24
Collection System Diagram
UG Cable Layout & Size
Turbine Location, Type and Size
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Engineering a sustainable future25
Collection System Data
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Engineering a sustainable future26
Collection System Data
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Engineering a sustainable future27
Updated Data Forms
Microsoft Office Excel Worksheet
Provide comments on the attached data forms by Thursday, July 2nd, 2009.
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Engineering a sustainable future28
Agenda
PB Introduction
VRT Study Scope and Challenges
Data Requirement from WGRs
Data Requirement Schedule
Q&A
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Engineering a sustainable future29
Data Requirement Schedule
WGRs to provide completed General Information form by Monday June 29th, 2009.
WGRs to provide comments on VRT Data Request Forms by COB Thursday, July 2nd, 2009.
PB will submit updated VRT Data Request Forms to WGRs by COB Friday, July 10th, 2009.
WGRs to submit completed VRT Data Request Forms by COB Friday July 31st, 2009.
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Engineering a sustainable future30
PB Contact Information
Sunil TalatiPB Power
2777 Stemmons FreewaySuite 1520
Dallas, TX 75207Ph 214-678-1190Cell 214-649-7365
Email: [email protected]
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PB Team