| 电容式电压互感器二次电压异常分析处理 |
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| 引用本文： | 洪乐洲,吴贻志,李靖翔,刘伟.电容式电压互感器二次电压异常分析处理[J].电力电容器与无功补偿,2012,33(3):73-76. |
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| 作者姓名： | 洪乐洲 吴贻志 李靖翔 刘伟 |
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| 作者单位： | 南方电网超高压输电公司广州局,广东 广州,510405 |
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| 摘 要： | 介绍了刚投运3个月的500 kV电容式电压互感器二次电压出现异常时的处理方法,分析得出了二次电压异常的原因是由于CVT内部均压电容击穿,通过对CVT进行试验和解体检查,证明了原材料的选用和制造工艺是造成均压电容击穿的主要原因。最后对500 kV电容式电压互感器的运行维护和产品生产提出了建议。
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| 关 键 词： | 电容式电压互感器(CVT) 介损 电容器 击穿 |
Analysis and Treatment on Abnormal Secondary Voltage of Capacitor Voltage Transformers |
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| HONG Le-zhou
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WU Yi-zhi
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LI Jing-xiang
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LIU Wei.Analysis and Treatment on Abnormal Secondary Voltage of Capacitor Voltage Transformers[J].Power Capacitor $ Reactive Power Compensation,2012,33(3):73-76. |
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| Authors: | HONG Le-zhou WU Yi-zhi LI Jing-xiang LIU Wei |
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| Affiliation: | (Guangzhou Bureau,CSG EHV Power Transmission Company,Guangzhou 510405,China) |
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| Abstract: | In this article,the treatment method in case of abnormal secondary voltage of 500 kV capacitor voltage transformers which just puts into operation for three months is introduced;the abnormal secondary voltage is due to the breakdown of internal grading capacitance in the CVT.Through test of CVT and disassembly inspection,it is proved that the main cause of grading capacitance breakdown is the selection of raw material and manufacturing process.Finally,the suggestions for operation,maintenance and production of 500 kV capacitor voltage transformers have been proposed. |
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| Keywords: | capacitor voltage transformer(CVT) dielectric loss capacitors breakdown |
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