The technology of detecting partial discharge based on high frequency method has been relatively mature.For on-site detection and accurate diagnosis of transformer operating condition

a method for detecting and analyzingthe propagation characteristics of discharge signals is proposed by using the high frequency method. A simulationmodel is established to determine the band selection range

and a test platform is built to simultaneously measure andacquire of real-time signals using multiple sensors. Comparison of the spectral characteristics of the partial dischargehigh-frequency signals between after propagation inside the transformer and at different positions. The results showthat the high-frequency partial discharge detection method can effectively detect transformer defects and has a clear variation rule of high-frequency signal

providing experimental basis for actual waveform detection.