Identification Method of the High-Resistance Single-Phase Disconnection Fault in Distribution Network Based on Distributed Measurement
8th Renewable Power Generation Conference (RPG 2019)(2019)
摘要
The single-phase disconnection fault is highly dangerous and severely harmful to the operation of the distribution network, so it is much significant to identify the single-phase disconnection fault accurately. On the basis of distributed measurement, the identification method of the single-phase fault of the distribution network has been studied. Firstly, we analyzed and calculated the load-side equivalent circuit of the single disconnection fault and single grounding fault, educed the voltage features of these two faults at the load side and further put forward the single-phase disconnection fault identification method based on the voltage amplitude of load-side fault phase. The results of PSCAD/EMTDC simulation show that this method can accurately identify the high-resistance single-phase disconnection fault in the distribution network and is expected to resolve the difficult identification of singlephase disconnection fault of the distribution network.
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关键词
DISTRIBUTION NETWORK,FAULT DIFFERENTIATION METHOD,DISCONNECTION FAULT,GROUNING FAULT,DISTRIBUTED MEASUREMENT
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