| 一种新型高压输电线路故障选相元件 |
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| 引用本文： | 刘会家,李宁,贾智斌.一种新型高压输电线路故障选相元件[J].高电压技术,2005,31(10):24-26. |
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| 作者姓名： | 刘会家 李宁 贾智斌 |
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| 作者单位： | 三峡大学电气信息学院,宜昌443002 |
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| 摘 要： | 为提高故障选相的正确性,用相电压差突变量和相电流差突变量构造一个标量△Tφφ,分析不同故障情况下△TAB、△TBC、△TCA之间的相互关系实现选相且在保护位于弱电源侧(负荷侧)或发生正反相两点转换性故障时故障选相准确,在线路末端故障时选相灵敏度较高。理论分析ATP仿真证明此法可行。
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| 关 键 词： | 故障选相 突变量 标量 |
| 文章编号： | 1003-6520(2005)10-0024-03 |
| 收稿时间： | 2004-10-10 |
| 修稿时间： | 2004年10月10 |
New Compensation Method of MOA Capacitive Current Based on Harmonics Analyzing Technology |
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| LIU Huijia,LI Ning,JIA Zhibin.New Compensation Method of MOA Capacitive Current Based on Harmonics Analyzing Technology[J].High Voltage Engineering,2005,31(10):24-26. |
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| Authors: | LIU Huijia LI Ning JIA Zhibin |
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| Affiliation: | (North China Electric Power University, Baoding 071003, China) |
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| Abstract: | Through electrical field transducer taking the line voltage signal, based on analyzing the relation of first harmonic current wave shape and third harmonic current wave shape of MOA under first harmonic voltage, making use of DSP technology, this paper put forwards a new method of calculating the first harmonic current and the third harmonic current of MOA's capacitive accurately. |
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| Keywords: | on-line detection MOA's resistive leakage current harmonics analysis compensation |
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