NERC SPIDERWG: Addressing impacts of Distributed Generation

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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

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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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Building off of Existing NERC Guidelines and Reports

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SPIDERWG Working Definition of DER

• DER: Any source of electric power located on the distribution system.

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IEEE 1547-2018 and BPS Reliability Perspectives

Source: IEEE SA

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Reliability Guideline: Parameterization of the DER_A Model

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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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