Arrester resistive current monitoring method and device based on GPS synchronization pulse per second
A resistive current and monitoring device technology, applied in the direction of measuring devices, measuring current/voltage, instruments, etc., can solve the problems of increasing construction costs, complex site environment, and difficult sampling references
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[0021] Below, the present invention will be further described in conjunction with accompanying drawing and embodiment:
[0022] Such as figure 1 As shown, the phase difference between the PT reference voltage signal and the leakage current is △φ, by introducing the intermediate reference signal, the phase difference between the leakage current and the rising edge of the GPS second pulse is φ1, and the phase difference between the PT reference voltage signal and the rising edge of the GPS second pulse The phase difference is φ2, that is, △φ=|φ2-φ1|; so the site only needs to measure φ1 and φ2 respectively with reference to the respective GPS second pulse signals; it is transmitted to the background equipment in a wireless way, and is obtained by making a difference in the background, and the leakage The current is the phase difference between the full current and the grid voltage. According to the measured full current and the RC parallel equivalent model of the zinc oxide arre...
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