用于局部放电检测的暂态对地电压传感器设计

Design of Transient Earth Voltage Sensor for Partial Discharge Monitoring

针对局部放电带电检测的实际情况,介绍一种基于对数检波方法的暂态对地电压传感器设计方案。传感器采用一体化设计,包括耦合电容、前置信号调理、传感器外壳三部分。重点介绍耦合电容板尺寸选择、前置信号调理的电路设计、传感器外壳屏蔽及人机功效的设计,并通过实验检验了传感器性能。

This paper introduces a design of the transient earth voltage sensor based on the logarithmic detection method in allusion to partial discharge online detection.The sensor is integrated designed,which includes the coupling capacitance,the front signal conditioning and the sensor housing.The paper focuses on the selection of the coupling capacitor plate size,the front signal conditioning circuit design,shielding design of the sensor housing and ergonomic design,and sets up an experiment to test the sensor performance.