| 220kV CVT不拆线试验时电容值误差分析与计算 |
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| 引用本文： | 李顺尧,万四维.220kV CVT不拆线试验时电容值误差分析与计算[J].高压电器,2006,42(6):468-469. |
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| 作者姓名： | 李顺尧 万四维 |
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| 作者单位： | 广东东莞供电局,广东,东莞,523000 |
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| 摘 要： | 现场通过对一组220 kV CVT不拆线进行预防性试验,对用常规法测量C2时电容值误差的原因进行分析,得出的结果是由于不拆线进行试验,电容C11,C1的接入,使得标准臂的参数发生了变化。因此,220 kV CVT按常规办法读取C2电容量后,必须乘以系数0.56才是电容C2的实际值。
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| 关 键 词： | 电容式电压互感器 C_2电容值误差 分析计算 |
| 文章编号： | 1001-1609（2006）06-0468-02 |
| 收稿时间： | 03 19 2006 12:00AM |
| 修稿时间： | 2006-03-192006-04-06 |
Analysis and Calculation of the Capacitance Inaccuracy in the Test of 220 kV CVT without Disconnecting Wire |
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| LI Shun-yao,WAN Si-wei.Analysis and Calculation of the Capacitance Inaccuracy in the Test of 220 kV CVT without Disconnecting Wire[J].High Voltage Apparatus,2006,42(6):468-469. |
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| Authors: | LI Shun-yao WAN Si-wei |
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| Affiliation: | Guangdong Power Grid Co. Dongguan Power Supply Bureau, Dongguan 523000, China |
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| Abstract: | Through the preventive test carrying out on a 220 kV CVT without disconnecting wire,the reasons of the capacitance C2 inaccuracy are analyzed,and it is founded that the reason is that the parameters of the standard arm have been changed by C11 and C1 during the test.Therefore,to attain the actual value of the C2.,the value which obtained by normal method must multiply by factor 0.56. |
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| Keywords: | CVT the inaccuracy of the capacitance of the C2 analysis and computation |
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