NERC Update: Current Activities Ryan Quint, Ph.D., P.E. Senior Manager, Advanced Analytics and Modeling WECC MVWG Meeting June 2017

Overview This presentation focuses on technical works related to the activities of NERC and the NERC technical committees, including: System Analysis and Modeling Subcommittee (SAMS) Power Plant Modeling & Verification Task Force (PPMVTF) Load Modeling Task Force (LMTF) Synchronized Measurement Subcommittee (SMS) Methods for Establishing IROLs (MEITF) Solar Resource Performance Task Force (SRPTF) NERC System Analysis NERC Advanced Analytics & Modeling

Modeling Notifications EX2000 GENTPJ Gas Turbine Governors Renewable Energy System Modeling Composite Load Model Benchmarking

Guideline on Integrating VER into Weak Power Systems Guideline under industry comment period

Guideline on Reactive Power Planning Available HERE

NERC List of Acceptable Models Available HERE Latest version posted, working on updated version based on feedback from last SAMS meeting Simplified, clearer version of NERC Libraries of Standardized Powerflow Parameters and Standardized Dynamics Models

Node-Breaker Representation in Planning Models Node-Breaker Modeling Proposal is available HERE Webinar materials available HERE Source: PTI Source: PowerWorld Source: Powertech

Guideline on PPMV for Synchronous Machines Source: US ACE Source: GE Source: Duke

Guideline on PPMV for Inverter-based Resources Source: First Solar Source: First Solar

MOD-025 Discussions Source: Kestrel Source: USBR Source: IESO

Load Model Benchmarking Source: EPRI Source: EPRI

DER Modeling Guidelines Guideline on Modeling DER in Dynamic Load Models – HERE Guideline on DER Modeling – under industry comment

Forced Oscillation Guideline Guideline on Forced Oscillation Monitoring & Mitigation – under industry comment

Oscillation Analysis using Interconnection-wide PMU Data Objective: understand modal characteristics of each interconnection using high-resolution, time-sync’d data Mode shape, mode frequencies, mode damping ratio Provide utility industry with better fundamental understanding of inter-area modes and forced oscillations on the BPS Use actual data to characterize system; possibly benchmark with model-based approaches Explore oscillation analysis tools available to industry Source: Montana Tech

Reference Document on Linear State Estimation Plans to develop short reference document on LSE and application to real power systems Source: SCE

PMU Data Quality and Data Sharing Guidelines SMS identified issues with “super PDC to super PDC” communications Typically between ISO/RC/BA to other ISO/RC/BA Need recommendations related to: Planned and Unplanned PMU Outages Forwarded data stream, raw versus manipulated Name changes NERC IDCODEs PMU Registry  Plans to develop ad hoc group to tackle these high priority topics.

MEITF Guideline on Establishing IROLs Instability, Cascading, and Uncontrolled Separation

MEITF - Simulating Instabilities

EI Frequency Response Analysis

NERC/WECC Inverter Task Force Blue Cut Fire Disturbance Report

NERC Solar Resource Performance Task Force Group will formalize and continue under new TF name Focus on planning-related aspects Recommended inverter performance Ride-through Momentary cessation Return to operation Phase lock loop robustness Frequency measurement stability Coordinated interconnection-wide simulations to identify any reliability risks in future Modeling capabilities and practices Seeking experts in area of inverter controls design and simulation of inverter-based resources Announcement coming soon

MOD-032 Designee Update Case Quality – working with PPMVDTF to identify how metrics will be incorporated in case creation data checks Case Fidelity – no identified fidelity issues in WECC Approved Model List – WECC list acceptable, more restrictive than NERC list

Upcoming Workshops NERC-NATF Power System Modeling Workshop June 20-21, 2017 in Oak Brook, IL (ComEd) Variable Energy Resource Modeling Workshop August 1-2, 2017 in Atlanta, GA (NERC) NERC-NASPI Forced Oscillation Workshop September 27, 2017 in Springfield, MA (joint with NASPI)

Questions?