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首页> 外文期刊>Instrumentation and Measurement, IEEE Transactions on >Research on Proximity Effect in Measuring Error of Active Electronic Voltage Transformers
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Research on Proximity Effect in Measuring Error of Active Electronic Voltage Transformers

机译：有源电子式电压互感器测量误差的近似效应研究

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摘要

The principles of the active electronic voltage transformer (EVT) are introduced, and the mechanism of how a proximity electric field can influence the measuring of errors is analyzed from the perspective of the sensor section of the EVT. The error effects of a three-phase proximity electric field, proximal wall, and proximal high-voltage (HV) test equipment on active EVTs are simulated according to actual operation conditions in the laboratory and at a substation site. The theory and simulated analysis indicate that the disparity in practical environmental conditions, which influences the proximity electric field, is a significant reason that active EVTs exhibit excessive errors at substation sites. The error measurement of a three-phase proximity electric field experiment in the laboratory verifies the analysis results. Finally, the principles of selecting materials for capacitive voltage dividers and rationalization proposals for error calibration are given.
机译：介绍了有源电子变压器（EVT）的原理，并从EVT的传感器部分的角度分析了近场电场如何影响误差测量的机制。根据实验室和变电站现场的实际运行情况，模拟了三相接近电场，近端壁和近端高压（HV）测试设备对有源EVT的误差影响。理论和模拟分析表明，实际环境条件下的差异会影响邻近电场，这是有源EVT在变电站现场表现出过多误差的重要原因。在实验室中进行的三相接近电场实验的误差测量验证了分析结果。最后，给出了电容分压器选择材料的原理以及误差校准的合理化建议。

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