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Table 7 Causes and effects on differential protection due to IBRs

From: Transmission line protection challenges influenced by inverter-based resources: a review

Differential protection (87L)
Function Refences* Tech** Cause Effect
Threshold current start [53] WF Current limit protection by inverter control Starting current does not operate
Phase selection logic [53] WF Inverter control strategy, low-voltage ride-through The inverter acts to increase the phase current phase
[54] IBR Control strategies during FRT The angular difference of the faulted phase is not enough
  1. *Reference, **Generator technology