自然激励下发电机有功参与因子提取及其在阻尼调制中的应用

doi:10.19595/j.cnki.1000-6753.tces.210103

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Abstract Poorly damped oscillation is a key factor that affects the stability of large-scale interconnected power grids and is one of the major problems that limit the power exchange capacity between different areas. Aiming at the poorly damped mode, this paper proposed ambient-data-driven participation-factor-based generation rescheduling strategy for enhancing interarea mode damping. Firstly, subspace dynamic mode decomposition (Sub-DMD) algorithm was used to calculate the participation factor with respect to generator active power online from ambient data, and the relationship between the generation output and the mode damping can be quantified. Based on the identification results of modal phase, the generators for rescheduling can be divided into two groups. Combining with the power flow of the regional section, the adjustment direction of the two groups can be determined. Therefore, the key generators for enhancing the damping in the sink and source can be accurately determined. Finally, based on the participation factor identification results, combing with the principle of reducing the generation output in the source and increasing that in the sink accordingly, and fully considering the power limit of the adjustable generators and actual rescheduling feasibility constraints, the online damping enhancement strategy solely relying on synchronized ambient data was realized. The numerical simulation of IEEE 16-generator 5-area system and a real system verify the effectiveness and feasibility of the proposed method in terms of interarea mode damping enhancement.

Key words： Poorly damped mode ambient data subspace dynamic mode decomposition (Sub-DMD) participation factor participation factor with repect to active power

Received: 21 January 2021

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TM712

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	Articles by authors
	Wang Lixin
	Yang Deyou
	Cai Guowei
	Gao Han

Cite this article:

Wang Lixin,Yang Deyou,Cai Guowei等. Extraction of Participation Factor with Respect to Generation Active Power under Natural Excitation and Its Application in Damping Modulation[J]. Transactions of China Electrotechnical Society, 2022, 37(5): 1194-1203.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.210103 OR https://dgjsxb.ces-transaction.com/EN/Y2022/V37/I5/1194

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