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实用新型
CN201765301U 变压器局部放电在线监测设备 失效 - 权利终止

变压器局部放电在线监测设备
摘要：
本实用新型公开了一种变压器局部放电在线监测设备，包括安装在电力变压器铁心、外壳或夹件的接地线上的高频电流互感器和特高频传感器，以及与所述高频电流互感器和所述特高频传感器的信号输出端相连的监测装置，所述监测装置包括检波器、模数转换器和信号分析器。本实用新型将高频电流互感器和特高频传感器装设在铁心、外壳或夹件的铁心接地线上进行放电监测，不改变电力变压器的结构，安装方便，而且，监测灵敏度高，抗电磁干扰能力强。
摘要（英）：

The utility model discloses an online monitor apparatus for the partial discharge of a transformer, which comprises a high frequency current transformer and an ultrahigh frequency sensor installed on a grounded wire of a power transformer core, a casing or a clamper, and a monitor device connected with signal output ends of the high frequency current transformer and the ultrahigh frequency sensor, wherein the monitor device comprises a detector, an analog-digital converter and a signal analyzer. In the online monitor apparatus, the high frequency current transformer and the ultrahigh frequency sensor are mounted on the core grounded wire of the core, the casing or the clamper to monitor discharge, so the power transformer is structurally unchanged and convenient for installation, furthermore, the online monitor apparatus has high monitor sensitivity and strong resistance to electromagnetic interference.

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