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| Research of the comprehensive fault detection method based on moderate value resistance for neutral resonant grounded network |
| Tang Qijun, Wu Fan, Sun Yuning, Wang Yang, An Lingxu |
| State Grid Tianjin Electric Power Company, Tianjin 300000 |
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Abstract In the neutral resonant grounding system, the compensation currents of the arc- extinguish coil would decrease the zero-sequence current of the fault line when the ground fault happened, which would made the direction characteristic of the zero-sequence unconspicuous. A new comprehensive fault detection method based on moderate value resistance was put forward in this paper, which combined the the steady current state with the moderate value risistance and transient current state without the moderate value risistance to promote the accuracy of the fault detection. Meanwhile, this paper designed a site test method for the fault detection protection device.
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Received: 06 September 2018
Published: 17 April 2019
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| Cite this article: |
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Tang Qijun,Wu Fan,Sun Yuning等. Research of the comprehensive fault detection method based on moderate value resistance for neutral resonant grounded network[J]. Electrical Engineering, 2019, 20(4): 72-75.
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| URL: |
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http://dqjs.cesmedia.cn/EN/Y2019/V20/I4/72
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2019, Vol. 20 
