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Title: An ANN-based ward equivalent approach for power system security assessment
Authors: Chung, TS
Fu, Y
Issue Date: 2001
Source: Electric power components and systems, 2001, v. 29, no. 1, p. 55-69
Abstract: This paper presents a novel hybrid Arti cial Neural Network (ANN) and extended Ward-type equivalent approach for fast on-line voltage security assess- ment of power systems. The proposed approach maintains the desirable properties of the Ward equivalent method and can update online the parameters of the equivalent model when the topology of the external system changes. Moreover, fast boundary matching is achieved by using ANN. Test results demonstrate that the new approach is e cient and has good accuracy.
Keywords: External system equivalent
Ward equivalent
Contingency analysis
Publisher: Taylor & Francis
Journal: Electric power components and systems 
ISSN: 1532-5008
EISSN: 1532-5016
DOI: 10.1080/153250001461183
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