基于电缆局放试验的无线同步信号发生器的研制

Design of wireless synchronous signal generator based on cable partial discharge test

针对新投运电缆因为中间接头无法获取同步电压信号而导致局部放电测量难以进行的现状,研制了一种基于电缆局放试验的无线同步信号发生器。能通过GPRS无线通讯的方式获取电缆加压处电压的相位和频率信息,并由此信息发出相同相位和频率的同步电压信号,从而使测量电缆中间接头处的局部放电试验能顺利进行。设计了一种针对该无线同步信号发生器的相频校核方法,并在实测中得到验证。

According to the present situation that it is difficult for the new operation for cable intermediate joint to obtain the synchronous voltage signal and it dues that it is difficult to partial discharge measurement, we developed a wireless synchronous signal generator to cable partial discharge test. The phase and frequency information of cable pressure voltage can be obtained through GPRS wireless communication, and the cable partial discharge test can be carried out smoothly. It designs a phase and frequency calibration method for the wireless synchronous signal generator, and it is verified in the actual.