The Fault signal extraction research in the electric power metering system
On the basis of the resistance model of high voltage electric power metering system,we make a study on the saturation of the measuring CT when the load is heavy.Through experiments on measuring current transformers,we chose high-quality power frequency magnetic core of the least saturation.On the secondary side of the measuring CT,circuit debugging was carried on and through experiments,optimal circuit parameters were determined to optimize the detection circuit which reduced the resistance of the secondary side of the measuring CT to the utmost to decrease the magnetic flux in the magnetic core to weaken saturation.Through FIR filter we extract detection signal from the fault signal to diagnose the fault.The practical test show the extracted detection signal can accurately judge the fault.
High voltage electric power Fault detection FIR filter Fault signal current transformer
Jianjun Zhao Wei Liang Haijian Ge
Institute of Advanced Control and Intelligent Information Processing, Henan University, Henan Kai fe School of Computer and Information Engineering, Henan University, Henan Kai feng, China
国际会议
重庆
英文
555-559
2015-03-02（万方平台首次上网日期，不代表论文的发表时间）