逆变型分布式电源并网运行暂态稳定机理与评估方法

doi:10.19595/j.cnki.1000-6753.tces.201391

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Abstract The inverter interfaced distributed generator (IIDG) connected with the distributed grid is an important application of renewable energy. The stable operation of the IIDG depends on its control system and the connected grid. The transient response of the IIDG is complex, and it is prone to fluctuations or oscillations in output power and power angle when a transient evert occurs. This paper analyzes the controller and the structure of the connected grid to build the active power curves of the IIDG. The transient stability criteria are also proposed by analyzing the active power curve cluster. The influence of the network parameters and nominal power on the transient stability is also analyzed. A transient stability iteration algorithm is proposed by establishing the transient process of the IIDG, which can calculate the power angle variation. Study cases built in PSCAD/EMTDC verify the proposed mechanism, and show that the transient stability iteration algorithm is effective and feasible.

Key words： Inverter interfaced distributed generators transient stability mechanism transient stability computation power angle curve droop control

Received: 23 October 2020

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TM773

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	Articles by authors
	Yu Moduo
	Huang Wentao
	Tai Nengling
	Ma Zhoujun
	Lin Yayang

Cite this article:

Yu Moduo,Huang Wentao,Tai Nengling等. Transient Stability Mechanism and Judgment for Inverter Interfaced Distributed Generators Connected with Public Grids[J]. Transactions of China Electrotechnical Society, 2022, 37(10): 2596-2610.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.201391 OR https://dgjsxb.ces-transaction.com/EN/Y2022/V37/I10/2596

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