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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Wang Yongqiang Lu Fangcheng |
| Copyright Year | 2003 |
| Description | Author affiliation: Dept. of Electr. Eng., North China Electr. Power Univ., Baoding, China (Wang Yongqiang; Lu Fangcheng) |
| Abstract | Surge arresters are important over voltage protection equipment in a substation. It is necessary to monitor the resistive leakage current of MOAs (metal oxide surge arresters) on line so that we can prevent faults from developing in time to avoid economic loss. It is reasonable to adopt the resistive leakage currents basic component, i/sub r/, and thrice component, i/sub 3r/, as metal oxide surge arrester indicators. These indicators can detect the aging phenomenon of a metal oxide surge arrester in time. However, the existence of harmonic voltages in the power system influences the indicator accuracy. We analyze this effect and put forward an improved compensation method to separate the resistive leakage current under the existence of harmonic voltage. Finally, according to these methods, we develop an on-line MOA resistive current monitoring system based on the bus-module. |
| Sponsorship | China Inst. of Commun. (CIC) Beijing Univ. of Posts and Telecommun. (BUPT) Inst. of Elec. Eng. of Japan (IEEJ) Inst. of Electron., Information, Commun. Eng. of Japan (IEICEJ) |
| Starting Page | 375 |
| Ending Page | 378 |
| File Size | 278554 |
| Page Count | 4 |
| File Format | |
| ISBN | 7563508023 |
| DOI | 10.1109/CEEM.2003.238139 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2003-11-04 |
| Publisher Place | China |
| Access Restriction | Subscribed |
| Rights Holder | China Institute of Communications(CIC) |
| Subject Keyword | Power system harmonics Leakage current Surge protection Arresters Monitoring Voltage control Power system protection Substation protection Power system economics Power generation economics |
| Content Type | Text |
| Resource Type | Article |
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