A detection method for response time of overall primary frequency regulation of power grid
In this paper, a deep information mining is carried out for the frequency variation data curve during grid power shortage based on the grid frequency control mechanism. Considering the difference characteristics of system frequency response process with or without a governor provided for the grid, it is proposed to use the grid failure frequency data with a high sampling rate measured and recorded by phasor measurement unit (PMU) to calculate the maximum system frequency deviation and determine the actual action response time of overall primary frequency regulation (PFR) of grid by detecting the variation of the maximum frequency deviation. Both the simulation examples and the calculation results of actual grid data indicate that this method can provide relatively accurate references for evaluating the response time of overall primary frequency regulation of the grid.