Power distribution network switching disturbance event detection method, device, equipment and medium

The invention discloses a power distribution network switching disturbance event detection method, device and equipment and a medium, and the method comprises the steps: obtaining a phase current waveform of a target power distribution network; extracting a CODO value of the phase current waveform by using a CODO algorithm; and when the CODO value of the phase current waveform suddenly changes, determining that the switching disturbance event of the power distribution network occurs. According to the method, a high-frequency component appearing in a power distribution network line due to a circuit breaker gap arc reignition-extinguishing process during switching is visually reflected as a CODO value in a time domain. And comparing the CODO value to distinguish the disturbance event from the high-resistance grounding fault according to the characteristic that the three-phase phase current of the switching disturbance event is distorted at the same time. Therefore, the reliability of fault detection is improved