A Discrimination Method for Fault Sections in Hub Areas Based on Power Flow Analysis
A technology of fault section and power flow analysis, applied in fault location, fault detection according to conductor type, information technology support system, etc., can solve the problems of complex fault section judgment, difficult to cooperate with feeder action level difference, skipping trip, etc. The effect of intelligent fault discrimination level, improved transportation adaptability, and improved transportation quality
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[0047] Embodiment 1: The implementation process of the present invention based on the power flow analysis method for the fault section in the hub area
[0048] Such as figure 1 and image 3 As shown, the outgoing current I of the traction substation 1 feeder 1 and I 2 , divide the fault section according to the distribution of switching stations, and divide L between the first switching station 2-1 and traction substation 1 1 , forming two node currents I 1 and I 12 , node voltage U 1 and U 12 ; The feeder current and voltage of the first switching station 2-1 are: I 121 , U 121 and I 122 , U 122 By analogy, the current and voltage of each section can be established, figure 1 L is formed in 1 , L 2 , L 3 , L 4 , L 5 5 sections, the first switching station 2-1, the second switching station 2-2, the third switching station 2-4, and the fourth switching station 2-3 are respectively feeder sections, and no loop is formed on one side segment of the net.
[0049]...
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