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A Protective Effectiveness Measure for Distribution Systems  

현승호 (명지대학 전기공학과)
이승재 (명지대학 전기공학)
임성일 (명지대학 전기공학)
최인선 (명지대학 전기공학)
신재항 (명지대학 전기공학)
최면송 (명지대학 전기공학과)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers A / v.53, no.5, 2004 , pp. 249-256 More about this Journal
Abstract
This paper suggests a novel evaluation scheme of protective effectiveness in distribution systems. The adequacy of every parameter in a protective device is evaluated for the setting or correction rules. Then, the protective effectiveness of a device, device-wise effectiveness, is obtained by the combination of the parametric evaluation results. The coordination-wise effectiveness between devices can be calculated by evaluating the parameters which contribute the performance of coordination. The protective effectiveness of the whole system can be obtained by combining the device-wise and coordination-wise effectiveness values. The rules, in this paper, are categorized into three groups; rules for single parameter, rules for coordination between parameters, and rules for coordination between protective devices to form a hierarchical calculation model. The proposed method is applied to a typical distribution network to show its effectiveness.
Keywords
Distribution System Protection; Protective Effectiveness; Parameter of a Protective Device; Hierarchical B Calculation Model;
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