Three-phase Simultaneous Measurement Technology for ZnO Arrester's Resistance Current
Luo Shao-ling · Proceedings of the CSEE · 2009
Based on the data abstraction and frequency discrimination by means of digital signal processing and fast Fourier transform,the paper presents the method to measure the resistance current of ZnO arrester with the help of digital phase-shifting technique.The method could deal with the interphase interference,and has robust anti-interference ability, so the measurement stability and data accuracy could be strengthened tremendously.The site test results displayed that with the three-phase simultaneous measurement technology, testing instrument works accurately and steadily,and plenty of test work could be chopped off.