Research on lightning intrusion wave overvoltage detection in 35KV prefabricated cabin high voltage substation

In order to reasonably plan the lightning protection measures of the substation, it is extremely necessary to accurately analyze the lightning intrusion wave overvoltage. Therefore, the research on lightning intrusion wave overvoltage detection of 35kV prefabricated high-voltage substation is proposed. After the lightning current model is constructed by using the piecewise index, the basic equivalent treatment of the substation is carried out based on the improved Euler method, the dynamic equation of the power system is solved, and the accuracy of overvoltage detection is guaranteed by controlling the time step. In the test results, the design method shows high reliability for the detection results of overvoltage peak value and waveform.