A new approach for distance protection using compensated voltage distribution under distributed parameter model

The traditional distance protections mainly use lumped parameter model and have bad performance under high resistance earth fault conditions. The paper presents a new distance protection for long transmission line using voltage distribution. The new method distinguishes the internal fault from the e...

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Bibliographic Details
Published inDianli Xitong Baohu yu Kongzhi Vol. 41; no. 7; pp. 46 - 53
Main Authors Song, Guo-Bing, Chu, Xu, Kang, Xiao-Ning, Jiao, Zai-Bin, Zhang, Jian-Kang, Suonan, Jia-Le
Format Journal Article
LanguageChinese
Published 01.04.2013
Subjects
Control systems
Electric potential
Error analysis
Faults
Feasibility
Mathematical models
Terminals
Voltage
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Summary:The traditional distance protections mainly use lumped parameter model and have bad performance under high resistance earth fault conditions. The paper presents a new distance protection for long transmission line using voltage distribution. The new method distinguishes the internal fault from the external fault by identifying the terminal voltage distribution trend based on the distributed parameter model. The effectiveness of new principle is analyzed in detail and theoretical error formula is deduced. The proposed method adopts distributed parameters model and has characteristics of low computational complexity and high capacity of earth-fault resistance. The feasibility has been verified by digital simulation and in-field record data simulation of distributed parameter line model.
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ISSN:1674-3415