电力系统保护与控制2018，Vol.46Issue(3)：164-169,6.DOI:10.7667/PSPC201784
特高压变电站工频电磁场对避雷器在线监测装置测量准确度影响研究
Accuracy examination of linkage current online measurement of surge arresters under power frequency interference of electric field and magnetic field in the ultra-high voltage substations
张露 1王永勤 1贺家慧 1吴彤 1罗浪 2李佳 2张兴无2
作者信息
- 1. 国网湖北省电力有限公司电力科学研究院,湖北 武汉 430071
- 2. 国网湖北省电力有限公司检修公司,湖北 武汉 430050
- 折叠
摘要
Abstract
Various kinds of interference in the ultra-high voltage substations are significantly inferential to the linkage current measurement of surge arresters. In order to check the normal measurement of the linkage online current measurement of surge arresters, both electric field and magnetic field interference at power frequency is proposed in the lab tests. Under the electric field interference, the test results of linkage current are over the error of the nominal value on the plate of the device if the wires of the sensor are not shielded. However, using the shielding can avoid this electric field interference. Moreover, placement of the wires can obviously change the measurement results. Meanwhile, the level of change of the measurement data increases with the electric field interference.关键词
工频电磁场干扰/避雷器/泄漏电流/在线监测装置/测量准确度Key words
electromagnetic interference at power frequency/surge arrester/leakage current/online measuring device/measurement accuracy引用本文复制引用
张露,王永勤,贺家慧,吴彤,罗浪,李佳,张兴无..特高压变电站工频电磁场对避雷器在线监测装置测量准确度影响研究[J].电力系统保护与控制,2018,46(3):164-169,6.
