NERC SPIDERWG: Addressing impacts of Distributed Generation
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RELIABILITY | RESILIENCE | SECURITY
NERC SPIDERWG: Addressing impacts of Distributed GenerationKun Zhu, PhD, Senior Manager, Generator InterconnectionMISONovember 3, 2020
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NERC System Planning Impacts of Distributed Energy Resources Working Group (SPIDERWG)
Aggregate Impacts of Distribution-Connected Energy Resources
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• Continued rapid growth of distributed solar PV• Distributed energy storage entering market rapidly• Public interest in DERs and microgrids for increased resilience§ Example: hurricanes, heat storm, storms
• Green energy incentives• Transportation electrification• New market opportunities and regulations – e.g., FERC Order
2222
Continuing Trends in DERs
NERC-Wide Cumulative Distributed Solar PV Capacity
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SPIDERWG Leadership Team
MODELING VERIFICATION STUDIES COORDINATIONCoordination Kun Zhu, MISO (Chair)
Bill Quaintance, Duke (Vice Chair)Ryan Quint, NERC (Coordinator)JP Skeath, NERC (Coordinator)
Sub-Group Leads Irina Green (CAISO)
Vacant
Michael Lombardi (NPCC)
Mike Tabrizi(DNV GL)
Mohab Elnashar (IESO)
Pengwei Du(ERCOT)
Clayton Stice(ERCOT)
Jimmy Zhang (AESO)
SPIDERWG
Modeling Verification Studies Coordination
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What Else is SPIDERWG Up To?
Modeling Verification
Studies Coordination
• DER Verification Guideline• DER Forecasting Practices
Guideline
• DER Modeling Survey• DER_A Parameterization
Guideline• DER Data Collection
Guideline• MOD-032-1 Review/SAR• Modeling Notification
• Guideline on BPS Planning Practices with DER
• White Paper: TPL-001 Standard Review
• Recommended Simulation Improvements
• Guidance on UFLS and UVLS• White Paper: Beyond
Positive Sequence
• IEEE Std. 1547-2018 Review and BPS Recommendations
• Guideline on Communicating across T-D Interface
• Education Materials• Coordination of Terminology• NERC Standards Review• Tracking DER Growth
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SPIDERWG Working Definition of DER
• DER: Any source of electric power located on the distribution system.
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• Purpose: § Revise MOD-032-1 to address gaps
in data collection for DERs in modeling and interconnection-wide case creation
• Scope:§ Update Attachment 1 table§ Consider Glossary definitions§ Replace LSE with DP§ Ensure no gaps with de-registration
of LSE
SAR for Improvements to MOD-032-1 for Aggregate Modeling of DERs
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Reliability Guideline: DER Data Collection for Modeling/Studies
• Data collection processes and modeling requirements per MOD-032
• Data collection recommendations for:§ Steady-state power flow studies§ Dynamics / stability studies§ Short-circuit studies§ Geomagnetic disturbance studies§ Electromagnetic transient studies
• Considerations for DER energy storage
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White Paper: Assessment of DER Impacts on NERC Standard TPL-001
Recommends Standard Drafting Team assess topics including:• Use of “System peak Load”• Possible Glossary of Terms
updates• Dynamic behavior and tripping
of DERs during BPS events• Contingency considerations
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• SPIDERWG Coordination Sub-Group currently reviewing suite of (most) NERC Reliability Standards
• Focus on possible impacts that growing levels of DERs may have on standards applicability and effectiveness
• Planning for Q4 2021 completion of initial review• Will go through NERC RSTC for commenting/feedback process• Considering both overall comprehensive perspective of
standards as well as individual requirements
SPIDERWG Standards Review Considering DER Growth
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• SPIDERWG identifying possible BPS reliability considerations as ISO/RTOs develop tariff revisions§ Applicability and requirements for
DER aggregators§ Information and data requirements§ Data exchange between aggregator,
ISO/RTO, and distribution entities§ Monitoring, operation, validation§ Locational considerations§ Modeling and study impacts and
innovations needed§ Coordination of all parties
BPS Reliability Considerations for FERC Order No. 2222
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• Growing market of distributed energy storage technologies• Opportunities with FERC Order No. 2222• Reliability and resilience opportunities for the future• Significant complexity w.r.t. planning and real-time operations
considerations§ Modeling§ Study approaches§ Data accounting§ Assumption management§ Operational flexibility use
Distributed Energy Storage
Source: PV Magazine
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