The following excerpt from IEEE 1547-2018, describes the ride-through performance requirements for single-phase and multi-phase DER for sub-cycle-to-cycle phase angle changes (referred to as “phase jump”) often caused by fault events or line switching operations on the distribution system or BPS:
“Multi-phase DER shall ride through for positive-sequence phase angle changes within a sub-cycle-to-cycle time frame of the applicable voltage of less than or equal to 20 electrical degrees. In addition, multi-phase DER shall remain in operation for change in the phase angle of individual phases less than 60 electrical degrees, provided that the positive sequence angle change does not exceed the forestated criterion. Single-phase DER shall remain in operation for phase angle changes within a sub-cycle-to-cycle time frame of the applicable voltage of less than or equal to 60 electrical degrees. Active and reactive current oscillations in the post-disturbance period that are positively damped or momentary cessation of the DER having a maximum duration of 0.5 s shall be acceptable in response to phase angle changes.”
“The ability of inverter-based resources and DERs connected to the BPS to ride through changes in voltage phase angle is critical to reliable operation of the BPS. Multiple grid events have identified that phase jump issues at the distribution system and on the BPS have caused these resources to trip off-line when using legacy settings not aligned with the requirement mentioned above. A BPS line switching event (no fault) in the Western Interconnection tripped a BPS-connected solar PV facility off-line due to the large change in phase angle when the line was re-energized and resumed power flow. In August 2019, a large disturbance in the UK that resulted in operation of UFLS involved about 150 MW of DER tripping on “Vector Shift protection” that exceeded six degrees.”