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 | |