Coupling Stability and Multi-Frequency Transient Characteristics of a Variable Speed Pumped Storage Power Station Under Generating Mode

IF 3.4 3区工程技术 Q3 ENERGY & FUELS

Energy Science & Engineering Pub Date : 2025-04-17 DOI:10.1002/ese3.70104

Rui Cao, Wencheng Guo

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Abstract

Coupling stability and multi-frequency transient characteristics of variable speed pumped storage power station (VSPSPS) under generating mode are main topics of this paper. Firstly, the overall model of VSPSPS is established and the coupling stability analysis of VSPSPS is carried out. Then, multi-frequency transient characteristics of VSPSPS are revealed and the generation mechanism is clarified. Finally, the influence of active power regulation and speed regulation on stability and transient characteristics of VSPSPS is analyzed. The results show that coupling stability of VSPSPS can be characterized by a stable domain determined by the control parameters of the governor. Transient response processes of VSPSPS present multi-frequency characteristics with three frequencies. The low frequency is dominated by diversion pipeline and surge tank. The high frequency is dominated by pressure pipeline, pump-turbine and governor. The medium frequency is dominated by doubly-fed induction motor (DFIM) and frequency converter. Active power regulation has almost no influence on stability of VSPSPS. To suppress the influence of active power regulation on speed regulation, and realize the rapid and high-quality regulation of active power, it is suggested to select large control parameters of frequency converter. Large operating speed is beneficial to stability. Control parameters of the governor have little effect on active power regulation.

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发电模式下变速抽水蓄能电站耦合稳定性及多频暂态特性

本文主要研究了变速抽水蓄能电站在发电模式下的耦合稳定性和多频暂态特性。首先，建立了VSPSPS的总体模型，并对VSPSPS进行了耦合稳定性分析。然后，揭示了VSPSPS的多频瞬态特性，阐明了其产生机理。最后，分析了有功功率调节和调速对VSPSPS稳定性和暂态特性的影响。结果表明，VSPSPS的耦合稳定性可以用一个由调节器控制参数决定的稳定域来表征。VSPSPS的瞬态响应过程呈现多频特性，有三个频率。低频以导流管道和调压箱为主。高频以压力管道、水泵水轮机和调速器为主。中频以双馈感应电动机（DFIM）和变频器为主。有功功率调节对VSPSPS的稳定性几乎没有影响。为抑制有功功率调节对调速的影响，实现有功功率的快速、高质量调节，建议选用较大的变频器控制参数。运行速度大有利于稳定性。调速器的控制参数对有功功率调节影响不大。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Energy Science & Engineering Engineering-Safety, Risk, Reliability and Quality

CiteScore

6.80

自引率

7.90%

发文量

298

审稿时长

11 weeks

期刊介绍： Energy Science & Engineering is a peer reviewed, open access journal dedicated to fundamental and applied research on energy and supply and use. Published as a co-operative venture of Wiley and SCI (Society of Chemical Industry), the journal offers authors a fast route to publication and the ability to share their research with the widest possible audience of scientists, professionals and other interested people across the globe. Securing an affordable and low carbon energy supply is a critical challenge of the 21st century and the solutions will require collaboration between scientists and engineers worldwide. This new journal aims to facilitate collaboration and spark innovation in energy research and development. Due to the importance of this topic to society and economic development the journal will give priority to quality research papers that are accessible to a broad readership and discuss sustainable, state-of-the art approaches to shaping the future of energy. This multidisciplinary journal will appeal to all researchers and professionals working in any area of energy in academia, industry or government, including scientists, engineers, consultants, policy-makers, government officials, economists and corporate organisations.