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A Study on the Dynamic Reduction for Large Power System

Kim, Jin-Yi (School of Electrical and Computer Engineering, Seoul National University)
Won, Dong-Jun (School of Electrical and Computer Engineering, Seoul National University)
Moon, Seung-Il (School of Electrical and Computer Engineering, Seoul National University)

Publication Information

KIEE International Transactions on Power Engineering / v.12A, no.1, 2002 , pp. 1-5 More about this Journal

Abstract

This paper presents the procedure to construct equivalent model of large power system based on nonlinear time simulation responses. It consists of coherency identification, generator aggregation and network reduction. Coherency index that can be directly implemented to this procedure is proposed. Generator aggregation based on detailed model is performed. This procedure can be used to construct equivalent model in PSS/E. It is also possible to reduce the large power system directly from the nonlinear time responses. This procedure is applied to the transient stability analysis of Korea power system that now experiences rapid changes. The equivalent model is compared with the original model in its size, accuracy, speed and performance. This paper shows that the developed equivalent model is a good estimate of the original system.

Keywords

coherency index; equivalent model; generator aggregation; system reduction;

Citations & Related Records

Reference

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