Journal of Electrical Engineering and Technology

The Korean Institute of Electrical Engineers (대한전기학회)
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Ungrounded System Fault Section Detection Method by Comparison of Phase Angle of Zero-Sequence Current

  • Yang, Xia (Dept. of Electrical Engineering, Myongji University) ;
  • Choi, Myeon-Song (Dept. of Electrical Engineering, Myongji University) ;
  • Lee, Seung-Jae (Dept. of Electrical Engineering, Myongji University) ;
  • Lim, Il-Hyung (Dept. of Electrical Engineering, Myongji University) ;
  • Lim, Seong-Il (Dept. of Electrical and Electronic Engineering, KyungNam University)
  • Published : 2008.12.01
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Abstract

In this paper, an integrated fault section detection and isolation strategy is proposed based on the application of the Distribution Automation System(DAS) utilizing advanced IT and communication technologies. The Feeder Remote Terminal Unit(FRTU) has been widely used to collect data in the Korean distribution system. The achieved data is adopted in this method for detecting multiple fault types. Especially in the case of single phase-to-ground fault, the fault section is detected by comparison of the zero-sequence current phase angle. The test results have verified the effectiveness of the proposed method in a radial distribution system through extensive simulations in Matlab/Simulink. Furthermore, a communication-based demo system identical to the simulation model has been developed, and it can be applied as an online monitoring and control program for fault section detection and isolation.

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References

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