Development of the dynamic equivalent model for large power system

Jin Yi Kim; Dong Jun Won; Seung Il Moon

doi:10.1109/PESS.2001.970188

Development of the dynamic equivalent model for large power system

Jin Yi Kim, Dong Jun Won, Seung Il Moon

Seoul National University

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

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.

Original language	English
Article number	49
Pages (from-to)	973-977
Number of pages	5
Journal	Proceedings of the IEEE Power Engineering Society Transmission and Distribution Conference
Volume	2
Issue number	SUMMER
DOIs	https://doi.org/10.1109/PESS.2001.970188
State	Published - 2001
Externally published	Yes

Keywords

Coherency
Coherency index
Equivalent model
Generator aggregation
System reduction

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10.1109/PESS.2001.970188

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N2 - 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.

AB - 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.

KW - Coherency

KW - Coherency index

KW - Equivalent model

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KW - System reduction

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JF - Proceedings of the IEEE Power Engineering Society Transmission and Distribution Conference

IS - SUMMER

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Development of the dynamic equivalent model for large power system

Abstract

Keywords

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