基于多电容电流传感器的宽带电压测量系统

2018 International Conference on Diagnostics in Electrical Engineering (Diagnostika) Pub Date : 2018-09-01 DOI:10.1109/DIAGNOSTIKA.2018.8526125

Lin Du, Disheng Wang, Jiayu Tan, Youyuan Wang

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引用次数: 0

摘要

为了优化电网电压监测，提出了一种基于电容电流的宽带电压测量系统。电容器件漏电流分量分别由两个磁导率不同的电感线圈获取30Hz~3kHz和3kHz~1MHz频段的漏电流分量。然后基于两路信号重构30Hz $\sim$ 1MHz的宽带电压。介绍了测量系统的组成，并对组成参数进行了优化，保证了传感器的幅频特性。实验结果表明，该测量系统在工频电压、开关过电压和雷电过电压的测量中具有良好的精度和线性度。

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Wide-band Voltage Measement System based on Multi-capacitive Current Sensors

A wide-band voltage measurement system is proposed to optimize voltage monitoring on power grid based on capacitive current. Capacitive device leakage current components in frequency bands of 30Hz~3kHz and 3kHz~1MHz are acquired respectively by two inductance coils, whose magnetic permeability are different. Then wide-band voltage of 30Hz $\sim$ 1MHz is rebuilt based on two paths of signals. This paper introduces the components of the measurement system, and optimizes component parameters to ensure sensors' amplitude and frequency characteristics. Experiment results verified that the measurement system has good accuracy and linearity in the measurement of power frequency voltage, the switching overvoltage and the lightning overvoltage.

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2018 International Conference on Diagnostics in Electrical Engineering (Diagnostika)

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