Power distribution network mixed fault range finding method and device based on PMUs
A fault location and distribution network technology, applied in the direction of fault location, fault detection according to conductor type, information technology support system, etc., to achieve high fault location and high precision effect
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[0025] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0026] Embodiments of the invention: figure 1 It is a structural diagram of a 10KV power distribution system. BRK represents the outlet circuit breaker of the substation, S1~S4 represent the subsection switches equipped with feeder terminal units (FTU) on the main line, and S5~S7 represent subsections without feeder terminal units (FTU) on the branch feeders. Section switches, FI1~FI3 represent the fault indicator (FI) installed at the head end of the distribution feeder, and a synchrophasor measurement unit (PMU) is installed at the substation and the end of the main feeder, and the substation is used as an information processing substation. PMU1 and PMU2 provide a second pulse signal and a time tag through the GPS receiver. The time can be the l...
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