Localization Technology of Small Current Ground Fault Section of a Distribution Network Based on Multi-terminal Synchronous Waveform

The role of fault section location in the grounding diagnosis is very important, but there is a problem of low diagnostic accuracy of small current. The GPS positioning method does not solve the problem of fault section location in the grounding diagnosis of the distribution network, and the small current diagnosis ability is low. Therefore, a multi-terminal synchronous waveform method is proposed to analyze the grounding diagnosis. Firstly, the synchronous theory is used to judge, and the fault section positioning standards are divided according to the fault section positioning standard to reduce the fault section positioning Disturbing factors. Then, the synchronization theory forms grounding diagnostic standards and synthesizes the fault section positioning standards OK. The fault segment positioning accuracy and fault section location time of the multi-terminal synchronous waveform method is superior to the GPS positioning method.