As for the issue of disturbance positioning of capacitor switching in the power grid

in this paper

the basic principle of cross S-transform is described and a new kind of disturbance positioning method of capacitor switching is proposed based on the S-transform. The phase difference of start current of disturbance and voltage signal disturbance component is deduced by the use of cross S-transform. Both transient process of capacitor switching circuit and the detection method of transient disturbance voltage and current phase difference are analyzed in detail. The judgments criteria on the position of capacitor switching are described and

at the same time

positioning process is given. The position of disturbance source can be judged accurately through phase difference polarity with combination of multiple point measurement. Finally

the effectiveness of the proposed method is verified by the simulation experiment.