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A case‐based construction method for a fault‐restoration support system in secondary power systems
Author(s) -
Okuda Kenzo,
Nakagawa Kazumitsu,
Yamazaki Katsuhiro
Publication year - 1992
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.4391120403
Subject(s) - fault (geology) , computation , electric power system , reliability engineering , case based reasoning , adaptation (eye) , inference , computer science , process (computing) , function (biology) , power (physics) , engineering , control engineering , artificial intelligence , algorithm , physics , optics , quantum mechanics , evolutionary biology , seismology , biology , geology , operating system
The authors have already clarified that case‐based reasoning (CBR) is very useful for the fault‐restoration support system in electrical power networks. This paper describes the case‐based construction method, adaptation and modification method of a case which is a fundamental process of CBR, and the results of evaluation. The following points were clarified through the simulations of fault restoration under various conditions with electrical power networks of practical scale: (1) a case‐based construction method and the guide to the selection of cases which should be included in the case were made clear. Restoration plans which include many cases are registered in the base. Cases which would require long computation time are also registered in the case base. In the application which requires high‐speed processing, such as fault restoration, there exists an optimum value in the total numbers of cases in the case base; (2) the function of load switching which is essential to perform adaptation and modification of a case flexibly was studied and embedded in the system herein. Inference power was augmented by the implemented of this function, and optimum for suboptimum solutions were obtained. Processing time with CBR is considerably shorter than other methods, and this feature is remarkable with complicated cases.