Identification and isolation method of through faults of coal mine power supply system
A power supply system and fault identification technology, applied in the direction of electrical components, circuit devices, etc., can solve the problems of leapfrog tripping of various through-faults and non-selectivity of leakage protection, so as to solve the problem of through-fault power supply, high reliability, Guaranteed selective effect
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[0017] Example 1: In figure 1 Among them, the present invention comprises the following steps:
[0018] (1) The ground and underground substations are respectively built as sub-smart substations, and a station control layer with a regional centralized control center is built on the ground as the public station control layer of each sub-smart substation. The public station control layer coordinates and controls each sub-smart substation , the protection and control devices of each sub-smart substation complete the fault identification, and the protection host of the centralized control center completes the judgment of the fault section within the system range. figure 2 shown;
[0019] (2) The regional centralized control center has the function of fault identification and isolation. The regional centralized control center includes a centralized control center host and a display. The centralized control center host collects the fault information sent by the protection and mea...
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