System for monitoring high voltage switch cabinet partial discharge online
A high-voltage switchgear, partial discharge technology, applied in the direction of testing dielectric strength, testing using acoustic measurement, testing using optical methods, etc., can solve the problem of switchgear insulation failure threatening the safe operation of the power system, affecting life, production and even society Stability, equipment damage and other problems, to achieve the effect of high sensitivity and anti-interference ability, low false alarm rate, real-time remote monitoring
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[0020] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:
[0021] Such as figure 1 As shown, a system for on-line partial discharge monitoring of high-voltage switchgear, including ZigBee sensor nodes, wireless communication modules and host computer monitoring modules, ZigBee sensor nodes include ultrasonic sensor modules, ultrasonic signal conditioning modules, ultra-high frequency sensor modules, UHF signal conditioning module, ultraviolet sensing and conditioning module and processor, ultrasonic signal conditioning unit includes amplifier circuit, filter circuit and A / D conversion circuit, ultraviolet sensing and conditioning module includes ultraviolet photoelectric conversion unit, high voltage drive unit, I / U conversion unit, pulse amplification unit and pulse discrimination unit; wherein,
[0022] The ultrasonic sensor module, amplifier circuit, filter circuit, A / D conversion circuit and processor...
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