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Grounding faulted feeder protection in neutral noneffectively grounded distribution system based on hierarchical clustering technique

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4 Author(s)
Wang Yuanyuan ; Changsha Univ. of Sci. & Technol., Changsha, China ; Jian Jinbao ; Zeng Xiangjun ; Liu Sidong

A scheme of single-phase-to-ground fault feeder protection in distribution system with the application of a hierarchical clustering technique is presented in this paper. First, the data sets are divided into fault group and non-fault group, and two cluster centers of the groups are calculated by hierarchical clustering technique. The space relative distance among a detected pattern and the two cluster centers is then calculated to discriminate the faulted feeder. The feeder protection is independent of the network neutral-point grounding mode, and can detect high impedance grounding faults (HIGF). The proposed scheme is implemented and verified using Electromagnetic Transients Program (EMTP)-generated signals. Simulation results show that the scheme has high fault tolerance, sensitivity and robustness.

Published in:

Advanced Power System Automation and Protection (APAP), 2011 International Conference on  (Volume:3 )

Date of Conference:

16-20 Oct. 2011