Sensor for detecting transient voltage to ground signal

The utility model relates to a partial discharge detection technology field, concretely relates to sensor for detecting transient voltage to ground signal specifically includes shell, paster antenna,sleeve antenna, filtering unit, cable plug, the bottom in the shell is fixed to the paster antenna, and the sleeve antenna sets up inside the shell with paster antenna connection, and sleeve antenna and the synthetic resonant cavity of paster antenna group, the sleeve antenna is placed along the shell direction of height, the filtering unit sets up inside the shell with sleeve antenna connection,cable plug and filtering unit connection, and the cable plug is fixed at the shell top. The utility model discloses simple structure, and detection accuracy is high, is fit for using widely. 本实用新型涉及局部放电检测技术领域，具体涉及种检测暂态对地电压信号的传感器，具体包括外壳、贴片天线、套筒天线、滤波单元、电缆插头；贴片天线固定在外壳内的底部，套筒天线与贴片天线连接并设置在外壳内部，且套筒天线与贴片天线组合成谐振腔；套筒天线沿外壳高度方向放置；滤波单元与套筒天线连接并设置在外壳内部，电缆插头与滤波单元连接，且电缆插头固定在外壳顶部。本实用新型结构简单，且检测准确度高，适合推广使用。