Study on the Sensitivity of Selective Leakage Protection of Different Ground of Grid

Jian Tu; Zhen Hui  Huang; Zhen Juan  Huang

doi:10.4028/www.scientific.net/AMR.765-767.2426

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 765-767Study on the Sensitivity of Selective Leakage...

Study on the Sensitivity of Selective Leakage Protection of Different Ground of Grid

Abstract:

In view of the current direct supply situation of our coal mines high voltage distribution networks commonly used 6kV or 10kV electric cables,on the base of describing mechanism of three different neutral point grounded of underground high voltage distribution networks,detailed analysising three different grounded way of high-voltage power grid parameter sensitivity of leakage protection. The results show that, mine the sensitivity of the high-voltage grid leakage protection and start zero-sequence voltage have a great relationship, the greater the zero-sequence voltage setting value, the device's ability to detect leakage faults weaker corresponding lower sensitivity.

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Periodical:

Advanced Materials Research (Volumes 765-767)

Pages:

2426-2429

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.765-767.2426

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Online since:

September 2013

Authors:

Jian Tu, Zhen Hui Huang, Zhen Juan Huang

Keywords:

Coil Grounding of Arc Suppression of Neutral Point, High Resistance Grounded of Neutral Point, Neutral Point without Earthing, Selective Leakage Protection, Sensitivity

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