LOW VOLTAGE APPARATUS ›› 2022, Vol. 0 ›› Issue (10): 74-77.doi: 10.16628/j.cnki.2095-8188.2022.10.012

• Detection & Experiment • Previous Articles     Next Articles

Research on Time Parameter Detection System of HV Circuit Breaker Based on Current Signal

JIANG Jun, ZHENG Xiang, ZHU Ningning   

  1. School of Electrical and Information Engineering, Dalian Jiaotong University, Dalian 116028, China
  • Received:2022-03-09 Online:2022-10-30 Published:2023-01-04

Abstract:

Aiming at the time parameter detection of HV circuit breaker,a detection method is proposed.According to the characteristics of the coil current during the circuit breaker operation,the compensation Hall current sensor is selected,and the coil current signal is collected by FPGA.Then the current signal with noise is denoised by wavelet.Finally,the state change of the auxiliary contact is used to determine the time point of just opening (just closing) and the time of opening and closing,and the measurement results are within the allowable error range.

Key words: HV circuit breaker, current signal of switching coil, FPGA, wavelet denoising, extraction of characteristic parameters

CLC Number: