基于开环子系统模式信息的次同步谐振机理研究

doi:10.19595/j.cnki.1000-6753.tces.181471

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Abstract Sub-synchronous resonance of turbine-generator integrated series-compensated power system is a classic problem in the field of sub-synchronous oscillation research. The typical analysis methods include open-loop modal analysis method and complex torque coefficient method. To improve the existing open-loop modal analysis method, this paper further considered the influencing factors of the distance between open-loop modes, and proposed a method to evaluate the closed-loop modes by using the open-loop modal information of the interconnected open-loop subsystems. Based on IEEE SSR FBM, firstly, the mechanism of torsional vibration was revealed as the open-loop modal coupling, i.e., open-loop modes of two subsystems are close to each other. And the coupling between two open-loop modes may cause closed-loop modal repulsion, which is related to the distance and residues between two open-loop modes. Then, the relationship between induction generator effect and open-loop mode of the electrical subsystem was studied. Finally, the mechanism of the additional power system stabilizer sub-synchronous resonance damping controller to improve the stability of the torsional vibration of the shafting system by affecting the open loop modal information was revealed.

Key words： Turbine generator series compensated power system sub-synchronous resonance open-loop modal information

Received: 10 September 2018 Published: 30 December 2019

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TM712

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	Wang Yang
	Du Wenjuan
	Wang Haifeng

Cite this article:

Wang Yang,Du Wenjuan,Wang Haifeng. Mechanism Study of Subsynchronous Resonance Based on Open-Loop Modal Information[J]. Transactions of China Electrotechnical Society, 2019, 34(24): 5209-5220.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.181471 OR https://dgjsxb.ces-transaction.com/EN/Y2019/V34/I24/5209

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