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10kV distribution line multiphase disconnection fault determination method based on three-phase voltage and current

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Title:
10kV distribution line multiphase disconnection fault determination method based on three-phase voltage and current
Author: Yang Chao ; Hu Kai ; Wang Guantao ; Liu Guoqiang ; Guo Zengmin ; Yan Zhiwei ; Liu Haiyong ; Mao Huiqing
Subjects: GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC ; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS ; INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ONOTHER TECHNOLOGY AREAS ; MEASURING ; MEASURING ELECTRIC VARIABLES ; MEASURING MAGNETIC VARIABLES ; PHYSICS ; SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORKOPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FORIMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION,DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS ; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS ; TESTING
Description: The invention discloses a 10 kV distribution line multiphase disconnection fault determination method based on three-phase voltage and current. The 10 kV distribution line multiphase disconnection fault determination method comprises the following steps: acquiring voltage and current information of each node of a power distribution network; determining a line on which a fault occurs according to the acquired power distribution network current information, and judging whether the failure line has a disconnection fault; determining whether the fault is a multiphase disconnection fault; determining the specific fault type of the multiphase disconnection fault according to a relationship among a phase voltage effective value before fault, an effective value of each phase voltage of the power side bus after the fault, relative ground voltage on the load side after the fault and a voltage setting value; and determining a specific fault zone by comparing whether the voltage information of each node is consistent for
Creation Date: 2016
Language: Chinese;English
Source: esp@cenet

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10kV distribution line multiphase disconnection fault determination method based on three-phase voltage and current

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