氧化锌避雷器阻性电流三相同时测量技术  

Three-phase Simultaneous Measurement Technology for ZnO Arrester's Resistance Current

作　　者：刘凡[1] 曾宏[1] 许安[1] 刘敬民[1] 骆少陵 

机构地区：[1]四川电力试验研究院,四川省成都市610072

出　　处：《中国电机工程学报》2009年第S1期73-77,共5页Proceedings of the CSEE

摘　　要：在深入研究数字信号处理和傅里叶变换技术实现数据提取和频带甄别技术的基础上,提出采用数字移相的方法同时测量三相氧化锌避雷器阻性电流的方法。在测量时有效克服了氧化锌避雷器相与相之间的空间干扰,增强了抗干扰能力,提高了测试稳定性和数据的准确性。三相同时测量降低了现场工作的强度,现场试验证实了基于该三相同时测量技术的阻性电流测试仪的试验结果准确,数据符合规律。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.

关 键 词：氧化锌避雷器 阻性电流 三相同时测量 相间干扰抑制 

分 类 号：TM862[电气工程—高电压与绝缘技术]