Development of Predictive Prevention Method for Mid-term Stability Problem using Only Local Information

Imai, Shinichi; Syoji, Toshiya; Yanagihashi, Ken; Kojima, Yasuhiro; Kowada, Yasuyuki; Oshida, Hideharu; Goda, Tadahiro

doi:10.1541/ieejpes1990.118.9_931

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Construction Of Two-machine Equivalent Power System1

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2004

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“…In an experimental result presented in the next section, the change of the mechanical input of the generator is within 5%, while the change of the generator output is about 20 to 25%. Therefore, the mechanical input is assumed to be constant during midterm [11,12].…”

Section: Construction Of Two-machine Equivalent Power Systemmentioning

confidence: 99%

Midterm stability evaluation of wide‐area power system using synchronized phasor measurements

Ota

Ukai

Nakamura

et al. 2004

Electrical Engineering Japan

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SUMMARYIn recent years, the PMU (Phasor Measurement Unit) has received a great deal of attention as a synchronized measurement system of power systems. Synchronized phasor angles obtained by the PMU provide valuable information for evaluating the stability of a bulk power system. The aspect of instability phenomena during midterm tends to be more complicated, and the stability analysis using the synchronized phasor measurements is effective in order to keep a complicated power system stable. This paper proposes a midterm stability evaluation method for the wide-area power system using synchronized phasor measurements. By clustering the power system to some coherent groups, step-out is predicted on the basis of an aggregated two-machine equivalent power system. The midterm stability of a longitudinal power system model of Japan's 60-Hz systems constructed by a hybrid-type power system simulator is practically evaluated using the proposed method.

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Section: Construction Of Two-machine Equivalent Power Systemmentioning

confidence: 99%