Transient Zero-sequence Current Changing Rate Method for the Fault LineDetection of Small Current Neutral Grounding System
[1]WEI Zhenzhu,JIANG Jiandong,CHEN Fan,et al.Transient Zero-sequence Current Changing Rate Method for the Fault LineDetection of Small Current Neutral Grounding System[J].Journal of Zhengzhou University (Engineering Science),2012,33(01):106-108128.[doi:10.3969/j.issn.1671-6833.2012.01.026]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
33
Number of periods:
2012 01
Page number:
106-108128
Column:
Public date:
2012-01-10
- Title:
- Transient Zero-sequence Current Changing Rate Method for the Fault LineDetection of Small Current Neutral Grounding System
- Keywords:
- small current neutral grounding system ; fault line selection; ransient zero-sequence current; changing rate
- CLC:
- TM862
- Abstract:
- The transient zero-sequence characteristics in the case of single phase-to-ground fault in small cur.rent neutral grounding system are analyzed in this paper. And the fault line selection criterion based on thedifference of transient current changing rate between the fault line and the non-fault line is given, Then thetransient zero-sequence current changing rate method for the fault line detection of small current neutragrounding system is presented. The method, which can be immune to the variation of neutral grounding, voltage initial angle and transition resistance, has the characteristics of high sensitivity, reliability and practicali.ty. Finally , the simulation model of smal!l current neutral grounding system is built with Matlab and the simu-lation results showed the effectiveness of the method.
- References:
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- Similar References:
Memo
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Last Update:
1900-01-01
