Title:
PHASE-RELATIONSHIP-BASED METHOD FOR SINGLE-PHASE DISCONNECTION FAULT IDENTIFICATION IN POWER DISTRIBUTION NETWORK
Document Type and Number:
WIPO Patent Application WO/2020/191825
Kind Code:
A1
Abstract:
A wide area measurement system is used to synchronously measure three-phase voltages on a fault downstream load side and to calculate and analyze a phase relationship between the three-phase voltages on the load side to obtain a single-phase disconnection fault identification method based on a three-phase voltage vectorial angle relationship. Compared with a traditional identification method, the method analyzes and calculates equivalent circuit models on a power source side and the load side under different grounding conditions and under the condition of different grounding transition resistance values, and the obtained fault identification method has relatively good identification accuracy and a relatively wide range of application, and provides a feasible and effective new scheme for solving the problem of single-phase disconnection fault identification in a power distribution network.
Inventors:
LIU YADONG (CN)
LI KEJUN (CN)
LUO LINGEN (CN)
QIAN YONG (CN)
SHENG GEHAO (CN)
JIANG XIUCHEN (CN)
LI KEJUN (CN)
LUO LINGEN (CN)
QIAN YONG (CN)
SHENG GEHAO (CN)
JIANG XIUCHEN (CN)
Application Number:
PCT/CN2019/082821
Publication Date:
October 01, 2020
Filing Date:
April 16, 2019
Export Citation:
Assignee:
UNIV SHANGHAI JIAOTONG (CN)
International Classes:
G01R31/08
Foreign References:
| CN109324269A | 2019-02-12 | |||
| CN109444666A | 2019-03-08 | |||
| CN104730410A | 2015-06-24 | |||
| CN104777397A | 2015-07-15 | |||
| JP2010148284A | 2010-07-01 |
Attorney, Agent or Firm:
SHANGHAI HENGHUI INTELLECTUAL PROPERTY AGENCY (CN)
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