Analysis of the Influence of Renewable Generator Frequency Endurance Capability on Low-Frequency Load Shedding: A Hunan Case Study

Table 2

Allowable operation time of abnormal frequency.

Frequency range Hz	Cumulative allowable running time min	Allowable running time per time sec
51.0∼51.5	＞30	＞30
50.5∼51.0	＞180	＞180
48.5∼50.5	Continuous operation
48.5∼48.0	＞300	＞300
48.0∼47.5	＞60	＞60
47.5∼47.0	＞10	＞20
47.0∼46.5	＞2	＞5