Journal of Electrical Engineering and Technology

The Korean Institute of Electrical Engineers (대한전기학회)
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Single Line-to-ground Fault Location and Information Modeling Based on the Interaction between Intelligent Distribution Equipment

  • Wang, Lei (Anhui New Energy Utilization and Energy Saving Laboratory (Hefei University of Technology)) ;
  • Luo, Wei (State Grid Anhui Electric Power Company Anhui Maintenance Company) ;
  • Weng, Liangjie (State Grid Anhui Electric Power Company Anhui Maintenance Company) ;
  • Hu, Yongbo (State Grid Anhui Electric Power Company Anhui Maintenance Company) ;
  • Li, Bing (State Grid Anhui Electric Power Company Hefei Power Supply Company)
  • Received : 2017.04.09
  • Accepted : 2018.04.23
  • Published : 2018.09.01
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Abstract

In this paper, the fault line selection and location problems of single line-to-ground (SLG) fault in distribution network are addressed. Firstly, the adaptive filtering property for empirical mode decomposition is formulated. Then in view of the different characteristics showed by the intrinsic mode functions(IMF) under different fault inception angles obtained by empirical mode decomposition, the sign of peak value about the low-frequency IMF and the capacitance transient energy is chosen as the fault line selection criteria according to the different proportion occupied by the low-frequency components. Finally, the fault location is determined based upon the comparison result with adjacent fault passage indicators' (FPI) waveform on the strength of the interaction between the distribution terminal unit(DTU) and the FPI. Moreover, the logic nodes regarding to fault line selection and location are newly expanded according to IEC61850, which also provides reference to acquaint the DTU or FPI's function and monitoring. The simulation results validate the effectiveness of the proposed fault line selection and location methods.

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References

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