陈玉豪,刘宜成,刘力,汪先进,奚航,周凯.基于电容串联式的新型振荡波测试系统的研究[J].电测与仪表,2020,57(14):88-92. Chen Yuhao,Liu Yicheng,Liu Li,Wang Xianjin,Xi Hang,Zhou Kai.Study on a New Type of Oscillating Wave Measurement System based on Capacitance Series[J].Electrical Measurement & Instrumentation,2020,57(14):88-92.
Study on a New Type of Oscillating Wave Measurement System based on Capacitance Series
Conventional DC excited oscillating wave is easy to form space charge on cable. In order to solve the hidden danger of cable damage caused by dc compression, a new structure of oscillating wave power supply is proposed. The compression process of capacitor serially connected oscillating wave circuit is analyzed, and then the Multisim software is used to simulate and combine the simulation data to determine the feasibility of its theory. Taking the 10kV cross-linked polyethylene cable in the laboratory as the research object, a capacitive serially connected oscillating wave experimental platform was designed and a new type of oscillating wave partial discharge experiment was carried out. The experimental results show that the new oscillating wave circuit can effectively avoid the space charge generated by the cable in the test process, and can effectively detect the partial discharge of defects in the cable, and can replace the traditional oscillating wave test method.