Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/81137
Title: Second- and third-zone performance assessment of a symmetrical component based improved fault impedance estimation method
Authors: Waikar, D.L.
Liew, A.C. 
Elangovan, S. 
Keywords: Distance relays
Fault impedance estimation
Relay protection
Simulation techniques
Transmission line protection
Issue Date: Feb-1995
Source: Waikar, D.L.,Liew, A.C.,Elangovan, S. (1995-02). Second- and third-zone performance assessment of a symmetrical component based improved fault impedance estimation method. Electric Power Systems Research 32 (2) : 113-120. ScholarBank@NUS Repository.
Abstract: The performance assessment of a symmetrical component based fault impedance estimation method that has previously been proposed by the authors is discussed in this paper. A brief review of the proposed method is given. The personal computer based Alternative Transient Program was used in these performance assessment studies. Voltage and current signals for various fault conditions were generated by simulating different types of fault on a selected transmission line of a sample power system. These signals were processed, sampled, and used in the proposed method. The apparent impedance of the protected transmission line from the relay location up to the fault point was calculated using the proposed method. These impedance estimates were inserted in R - X plane characteristics to determine the suitability of the proposed method for digital distance protection of the second and third zones. The results of these performance assessment studies are presented and discussed in the paper. © 1995.
Source Title: Electric Power Systems Research
URI: http://scholarbank.nus.edu.sg/handle/10635/81137
ISSN: 03787796
Appears in Collections:Staff Publications

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