The Research of New Selective Leakage Protection Device Based on Additional DC and Zero-Sequence Power

Author:

Wang Yan Wen1,Wang Yin Sheng1

Affiliation:

1. China University of Mining and Technology

Abstract

By theoretical analysis and computer simulation,this paper has successfully solved the compatibility problembetween the Leakage protection with additional DCand zero-sequence power direction Leakage protection, and realized the goal of the two different ways of leakage protection sharingone set of electrical leakage protection system.This paper focuses on the basic components of "EDS-336/660 centralized-distributed selective leakage protection system"and its practical usage in Lvjiatuo Coal Mine.

Publisher

Trans Tech Publications, Ltd.

Reference6 articles.

1. Gao Yan, Wang Nianbin, Wang Yanwen: Research on selectivity electric leakage protection system base on null sequence power direction[J]. Coal Science and Technology, 2005, 33(11): 43-48.

2. Zhang Changsen, Ke Xizheng: Actuality and development trend of leakage protection for low-voltage mine electric network[J]. Colliery Mechanical & Electrical Technology, 2005(5): 73-77.

3. Liao Wen: Small current grounding line selection device based onarea-protection-principle[J]. Electric Engineering, 2007(5): 37-38.

4. Xing Yahui, Yan ping, Zhao Jun: Selecting the faulty line through correlation of zero-sequence currents in non-solid earthed net work[A]. 2009aAsia-Pacific Power and Energy Engineering Conference[C]. Piscataway, NIUSA: IEEE, 2009, 1-4.

5. Jung C K, Lee J B, Wang X H: et al wavelet based noise cancellation technique for fault location on underground power cables[J]. Electric Power Systems Research, 2007, 77(10): 1 349 -1 362.

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