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Applications of DER Advanced Functions and Settings. Devin Van Zandt, EPRI June 26, 2019 ITWG Meeting. Quick Snapshot. IEEE 1547-2018 applies to ALL DER, not just inverters Solar PV is dominating in most regions, but standard applies to all
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Applications of DER Advanced Functions and Settings Devin Van Zandt, EPRI June 26, 2019 ITWG Meeting
Quick Snapshot • IEEE 1547-2018 applies to ALL DER, not just inverters • Solar PV is dominating in most regions, but standard applies to all • Some IEEE-1547 requirements will be difficult for synchronous machines to meet • CA R21 and Hawaii R14 Inverters are available today and could be used • IEEE 1547-2018 DER tested to 1547.1 will be available late 2021/early 2022 • IEEE 1547-2018 ride-through capabilities are very important for bulk system as penetration levels increase • EPRI has been very involved in both T&D impacts of DER and advanced functions
Advanced Function Actually Required in Field Today* *This is not a comprehensive list and reflects limited data collection (especially internationally)
Comparison of Default Volt-var Settings for Several Standards
Idaho Power • Utility-scale Solar PV connected to distribution system with M&C • Utilize tailored Volt-var to balance reactive power absorption with LTC/Reg operations • Apply several pre-defined settings and perform simulation (OpenDSS) to examine system impacts • Min/Max Voltage and Maximum ΔV • Reactive power at POI, Substation and coordination with Caps • LTC/Reg Operations • Idaho Power can adjust Volt-var setpoints proactively • May adjust based upon scheduled maintenance
Idaho Power - Lesson Learned • Some inverters ignore Volt/VAR curves at “high” voltage • GSU transformer tap setting is important • Dead-band plays an important role in reactive power absorption • Slope plays an important role in number of LTC operations • Coordinate Volt/VAR settings with LTC controller • LTC reverse settings should be studied • Coordinate Volt/VAR curves with Automated Capacitor Control
Survey Results • Small sample size from some EPRI members in 2018 • No statistical significance to results • Provides some idea of current state and future • Plan to perform new survey as part of NYSERDA PON 3770
NYSERDA PON 3770 - Smart Inverter Settings Guidance for High Performing Smart Grid Applications Research Questions • What do IEEE 1547-2018 inverter settings mean to me? • How effective are inverter functions for specific applications? • What are the key considerations related to choosing functions and settings? • What is the method to choose the best settings and functions for my applications? Scope/Approach • Examine past simulation work related to inverter settings • Technical considerations for selection of functions and settings • Identify key factors and Settings Performance • Produce a methodology for efficiently choosing the best settings Expected Outcome • Application guidelines and a method/tool for determining settings for a variety of applications • Improved understanding of impacts to maximize technical, policy, and business goals Generalized Inverter Function and Settings Guidance