Research of Neutral Grounding Modes in 20 kV Distribution Network
[1]CHEN Genyong,HOU Yongjiang,YANG Fengmin,et al.Research of Neutral Grounding Modes in 20 kV Distribution Network[J].Journal of Zhengzhou University (Engineering Science),2010,31(03):33-37.
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
31卷
Number of periods:
2010 No.03
Page number:
33-37
Column:
Public date:
2010-03-01
- Title:
- Research of Neutral Grounding Modes in 20 kV Distribution Network
- Keywords:
- neutral grounding mode; single-phase to ground fault; arc-suppression coil; capacitive current; over-voltage; distribution network
- CLC:
- -
- DOI:
- -
- Abstract:
- For the problems of the single-phase to ground fault current increased and the over-voltage in the20 kV urban cable distribution network，the neutral grounding modes for different structures are studies．Application scopes of neutral grounding modes in the 20 kV distribution network are confirmed by the steady··state analysis and transient analysis of single-phase to ground fault，and the analysis of system parameters．When the capacitive current is less than 10 A．the insulated grounding mode can be used．Between 10-150A，the arc-suppression coil grounding mode can be used．Between 100-1000 A．the low-resistancegrounding mode can be used．The analysis result shows that the mode of the neutral grounding via low—resistance should be applied in the 20 kV cable distribution network systems．
- References:
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Last Update:
1900-01-01