Intelligent identification method of 10kV line short-circuit fault voltage
A fault voltage and intelligent identification technology, applied in the direction of measuring current/voltage, measuring electrical variables, and using digital measurement technology to measure, etc., can solve problems such as complex hardware circuits, inability to warn in time, tight internal space, etc., and achieve single software functions , good social benefits, and the effect of improving the detection rate
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[0042] The present invention will be further described below in conjunction with accompanying drawing.
[0043] figure 2 The schematic diagram of the primary wiring of the 10kV distribution network is shown, with figure 2 A brief description of the 10kV line short-circuit fault voltage detection technology, figure 2 CB1 and CB2 are the reclosers of the two substations, S is the switch on the pole of the subsection point, and L is the switch on the pole of the ring network point.
[0044] Before the 10kV line is powered on, the switch on the pole of the ring network point is in the opening state. figure 2 There is no electricity on side A and side B on the medium 10kV line. 10kV line power transmission starts, CB1 closes, FTU1 judges after X timing (7 seconds in general), confirms that there is no fault on the power supply side (that is, immediately cuts off power after no incoming power), and issues a closing command. Such as figure 2 , at this time the switch on the...
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