Single-phase earth fault identification method and system based on electric energy multi-dimensional information fusion

• Main Authors: ZHANG JIEFU, YE ZIYANG, HUANG JIAPENG, LI JINSONG, LIU GANG, LI QILIN, AI BING
• Format: Patent
• Language: Chinese; English
• Published: 15.07.2022
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention discloses a distribution network single-phase earth fault identification method and system based on electric energy information abrupt change, an electric energy information matrix of a power distribution network is constructed by taking real-time electric energy information of the power distribution network as basic data to carry out single-phase earth fault identification, the electric energy information can be directly acquired from an inherent acquisition device in the power distribution network, and other monitoring equipment does not need to be installed. According to the method, additional independent line selection basic data acquisition equipment is omitted, the problem that reliability of single-phase earth fault identification is reduced due to addition of the line selection basic data acquisition equipment or faults is solved, meanwhile, single-phase earth fault characteristic quantity calculation and judgment are carried out according to the electric energy information matrix of the