IBR Impacts to Protection Systems

Rich BauerWECC RWGJune 10, 2021

RELIABILITY | RESILIENCE | SECURITY2

NERC Disturbance Reports and Alerts

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NERC Disturbance Reports and Alerts

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• Current limited devices• Positive sequence only devices• Momentary cessation

Inverter-based resources

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Inverter-Based Resources

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• BPS challenges with increasing penetration of inverter-based resources

• Transmission protection impacts• Large system stability issues• Design and control philosophy

changes

IEEE PES

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• BPS challenges with increasing penetration of inverter-based resources

• Transmission protection impacts

• Large system stability issues• Design and control

philosophy changes

DOE SANDIA Report

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• Focused on interconnecting line protection

IEEE PSRC

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• Voltage dependent current source

• Lookup tables

IEEE PSRC

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New Working Group - CTF45: Investigate additional need for protection practices for interconnecting solar or other inverter based generation to utility transmission systems (continuation of WG C32). Elevated to Working Group (C45) WG Assignment: Prepare a technical report on protection practices for interconnecting solar or other inverter based generation to utility transmission systems from work of WG C32.

IEEE PSRC

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