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Single phase-to-ground fault line identification and section location method for non-effectively grounded distribution systems based on signal injection |
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| Authors: | PAN Zhencun WANG Chengshan CONG Wei ZHANG Fan |
| Institution: | 1. Key Laboratory of power System Simulation and Control of Ministry of Education,Tianjin University,Tianjin 300072,China;School of Electrical Engineering,Shandong University,Jinan 250061,China 2. Key Laboratory of power System Simulation and Control of Ministry of Education,Tianjin University,Tianjin 300072,China 3. School of Electrical Engineering,Shandong University,Jinan 250061,China |
| Abstract: | A diagnostic signal current trace detecting based single phase-to-ground fault line identifica- tion and section location method for non-effectively grounded distribution systems is presented in thisi oaper. A special diagnostic signal current is injected into the fault distribution system, and then it is de- tected at the outlet terminals to identify the fault line and at the sectionalizing or branching point along the fault line to locate the fault section. The method has been put into application in actual distribution network and field experience shows that it can identify the fault line and locate the fault section correctly and effectively. |
| Keywords: | single phase-to-ground fault (SPGF) signal injection method fault line identification fault location |
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