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2013•IEEJ Transactions on Power and EnergyOpen access

A Study on Power System Control Considering Both Transient Stability and Voltage Stability

Takanori Shuto, Masaki Nagata, Kenji Yoshimura, Takao Sugiuchi, Mitsuhiro Takeshita, Kenji Yonei

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Abstract

This paper proposes a novel control method considering both transient stability and voltage stability to be applied to online stabilizing control system of a long-distance transmission system. Power system in the future with a large amount of renewable energy sources may be vulnerable to transient instability and/or voltage instability because of balance stop of synchronous units to avoid power surplus. The proposed method analyzes successively both transient stability and voltage stability after a severe disturbance to assure transient stability and voltage stability simultaneously. This feature is realized by taking advantage of the difference of time domains of the two analyses. Numerical examples using IEEJ WEST 30 standard system show the effectiveness of the proposed method.

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What this paper is about

This paper proposes a novel control method considering both transient stability and voltage stability to be applied to online stabilizing control system of a long-distance transmission system. Power system in the future with a large amount of renewable energy sources may be vulnerable to transient instability and/or voltage instability because of balance stop of synchronous units to avoid power surplus. The proposed method analyzes successively both transient stability and voltage stability after a severe disturbance to assure transient stability and voltage stability simultaneously. This feature is realized by taking advantage of the difference of time domains of the two analyses. Numerical examples using IEEJ WEST 30 standard system show the effectiveness of the proposed method.

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Available abstract

This paper proposes a novel control method considering both transient stability and voltage stability to be applied to online stabilizing control system of a long-distance transmission system. Power system in the future with a large amount of renewable energy sources may be vulnerable to transient instability and/or voltage instability because of balance stop of synchronous units to avoid power surplus. The proposed method analyzes successively both transient stability and voltage stability after a severe disturbance to assure transient stability and voltage stability simultaneously. This feature is realized by taking advantage of the difference of time domains of the two analyses. Numerical examples using IEEJ WEST 30 standard system show the effectiveness of the proposed method.

Key concepts: Transient (computer programming), Control theory (sociology), Electric power system, Stability (learning theory), Transient voltage suppressor, Voltage, Instability, Power (physics)

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