Impact of Inverter Based Resources on System Protection

Inverter-based resources (IBRs) exhibit different short-circuit characteristics compared to traditional synchronous generators (SGs). Hence, increased uptake of IBRs in the power system is expected impact performance protective relay schemes—set under assumption a SG-dominated system. Protection engineers need study these challenges and develop remedial solutions ensuring effectiveness protection higher levels IBRs. To address this need, paper studies on variety schemes including line distance protection, memory-polarized zero sequence directional element, negative quantities-based current differential phase comparison rate-of-change-of-frequency, swing detection. For each function, potential misoperation scenarios are identified, recommendations provided issue. The objective provide an improved understanding way may negatively as first step towards developing future effective high share