Montreal 2006 – Symposium on Microgrids June 23, 06 Canada Ressources naturelles Canada Natural Reso urces Canad a IEEE 1547.4 Guideline for Intentional Islanding of Distributed Generation and BC Hydro’s Planned Islanding Experience Chad Abbey 1 Susan Tang 2 1 – Natural Resources Canada - CETC-Varennes 2 – BC Hydro
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Montreal 2006 – Symposium on MicrogridsJune 23, 06 CanadaRessources naturelles
CanadaNatural ResourcesCanada
IEEE 1547.4 Guideline for Intentional Islanding of Distributed Generation and BC Hydro’s
Planned Islanding Experience
Chad Abbey1 Susan Tang2
1 – Natural Resources Canada - CETC-Varennes2 – BC Hydro
2Montreal 2006 – Symposium on MicrogridsJune 23, 06
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Overview
Canadian microgrid researchIEEE 1547.4
HistoryDocument overviewTechnical issues
BC Hydro planned islandingIslanding strategyBoston Bar case study
Summary
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General
HistoryIEEE 1547.x series – IEEE 1547.4Meetings: biannual meetings since August 2004.Structure of document definedContent is being integrated
Next MeetingAug. 2006 – Las Vegas
Project end dateGuide scheduled to be balloted and approved by December 2007
Chair: Ben Kroposki, National Renewable Energy Laboratory (NREL)
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Document content
1) Overview2) References3) Definitions and Acronyms4) Electrical System Characteristics5) Functionality of the DR Island System6) Design and Integration of DR Island Systems7) Operation and Management of DR Island Systems
Load and generation managementVoltage and frequency controlDR controlStability – steady-state dynamic stabilityProtection issues – coordination, out-of phase reclosing, configuration Cold load pickupMonitoring and communication
Reconnection mode
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Design and integration
TypesEngineering considerationsEPS planning
Studies – compatibility, load flow, short circuit studiesOperating practicesInterferance of parallel operation settings – anti-islanding, under / over frequency and voltage
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Operation and Management
Power dispatchCentral dispatch controlDistributed dispatch
Communication and information exchangeReal time operation considerationsTime length of operation
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DR islands
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Design process
ImplementationDR Island Planning
Design and IntegrationType(s) of island(s)Engineering considerationsEPS planning
Operation and ManagementPower dispatchCommunication and data
exchangeReal-time operationDuration of island
DR Island FunctionalityParallel operationTransitionIsland mode
types, strategyReconnection mode
ApprovalReview and validation Commissioning In-service
Revisit design:Retrofitting Upgrades Planning
yes
revisions required
revisions required
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BC Hydro – planned islanding
Reliability concernD customer reliability was below customer expectationsIf a power generator (PG) islands BCH loads on same or nearby feeder – reliability improvement
Transmission supply is unsecure – single radial supplyFeeder is long and subject to frequent outages – trees, storms, motor vehicles
Islanding studyInadvertent islanding & planned islanding of BCH customer loadthe island is all or part of a distribution feederthe island excludes the distribution substation LV bus and the substation transmission supply
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Islanding study
Existing PG Interconnection RequirementsReview existing BCH PG Interconnection Requirements for treatment of inadvertent islanding
System ReliabilityDetermine criteria for reliability impact under inadvertent islanding, planned islanding, future planned islanding
Power QualityDefine PQ considerations for frequency & V variations, lowfault levels, harmonics, etc
BC Hydro System RequirementsDefine requirements on BCH side for PG planned islanding, e.g. telecom, P&C, with incremental costs
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Islanding study
Power Generator System Requirementsprime mover & generatorexciter, governor & AVRgenerator lag/lead power factor ratingload follow capabilityprotection & coordination requirementsblack start capabilityCommissioning tests for V & frequency performance in grid connect, island and dead-load pickupcosts for added requirements
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Islanding study
Operation and Safety Define Area Control Centre & line crew requirements for islanding operation, e.g.Added PG monitoring at Area Control CentreLine crew trainingLocal Operating OrderSafety issues for line crews, tree trimmers & substation personnel
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