Transient state traveling wave signal detection method for transformer substation

The invention belongs to the technical field of grid fault diagnosis, and relates to a transient state traveling wave signal detection method for a transformer substation. The method comprises the following steps: a transient state current transformer is mounted on a transformer core ground wire of the transformer substation, a current signal outputted by the transient state current transformer is subjected to filtering through a high-pass filter, the waveform of the filtered current signal is recorded, the transient state traveling wave signal is detected according to the amplitude and the energy value of the signal, and the method can be used for detecting and positioning grid faults. The method can be used for detecting traveling wave signals generated by all lines on a high-voltage side, a medium-voltage and a low-voltage side of the transformer of the transformer substation at the same time, and has the advantages of strong antijamming capability, economy, simplicity and convenience, easiness in popularization and application and the like.