Power transmission line discharge fault locating method based on electric field mutation and monitoring device thereof
A transmission line and fault location technology, applied in fault location, fault detection according to conductor type, signal transmission system, etc., can solve problems such as difficulty in precise location of line faults, inaccurate fault location measurement, etc., and is conducive to rapid analysis and processing and The effect of restoring power supply, saving traffic costs, and improving the level of safe operation
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[0028] Such as Figure 1-3 As shown, the electric field mutation based transmission line discharge fault location method of the present invention comprises the following steps:
[0029] 1), the electric field sensor 9 of the monitoring device collects the electric field information on the transmission line, and the photographing device 4 is aimed at the line insulator and the space area along the line corridor;
[0030] 2) When a discharge fault (grounding and phase-to-phase short circuit) occurs in the area along the transmission line, the voltage at the fault point along the line decreases, and the intensity of the electric field in space decreases. The voltage is almost zero. Using the physical phenomenon that the voltage decreases and the surrounding electric field drops synchronously, the electric field sensor 9 senses the sudden change in the space electric field information. Specifically, after the amplitude of the space electric field strength reduction or the sudden c...
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