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| 电能表中性点虚接对电压互感器二次压降的影响分析 | |
| 引用本文： | 丁涛,陈卓娅,刘忠,张景超. 电能表中性点虚接对电压互感器二次压降的影响分析[J]. 电测与仪表, 2009, 46(10) |
| 作者姓名： | 丁涛 陈卓娅 刘忠 张景超 |
| 作者单位： | 河南电力试验研究院,郑州,450052 |
| 摘 要： | 基于对称分量法,对电能表中性点虚接后的电压互感器二次压降进行了分析,得出了正确接线前后的计量误差变化量.并结合现场的电压互感器二次压降测试结果,说明了电能表中性点虚接对二次压降有较大的影响. |
| 关 键 词： | 中性点虚接 电压互感器 二次压降 计量误差 |
The Influences and Analyses about PT Secondary Voltage Drop Caused by Energy Meter's Neutral Point Virtual Connection |
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| DING Tao,CHEN Zhuo-ya,LIU Zhong,ZHANG Jing-chao. The Influences and Analyses about PT Secondary Voltage Drop Caused by Energy Meter's Neutral Point Virtual Connection[J]. Electrical Measurement & Instrumentation, 2009, 46(10) | |
| Authors: | DING Tao CHEN Zhuo-ya LIU Zhong ZHANG Jing-chao |
| Affiliation: | DING Tao,CHEN Zhuo-ya,LIU Zhong,ZHANG Jing-chao(Henan Electric Power Research Institute,Zhengzhou 450052,China) |
| Abstract: | Based on the method of symmetrical component decomposing,this paper makes theoretical analyses on secondary Voltage drop of voltage transformer under the condition of energy meter's neutral point virtual connection.The variation of metering error between proper and improper statue is obtained.The on-site test results indicate that energy meter's neutral point virtual connection has a great effect on PT secondary voltage drop. |
| Keywords: | neutral point virtual connection potential transformer secondary voltage drop metering error |
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