Analysis and suppression of subsynchronous oscillation of Rudong wind power through MMC-HVDC system

2021 Annual Meeting of CSEE Study Committee of HVDC and Power Electronics (HVDC 2021) Pub Date : 1900-01-01 DOI:10.1049/icp.2021.2553

J. Li, X. Xie, J. Yang, H. Li, Z. Shi, K. Wang, C. Fu, W. Yang

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引用次数: 2

Abstract

There may be complex interaction between the converter control systems of wind power and MMC-HVDC, which will lead to sub-/super-synchronous oscillation and threaten the safe and stable operation of the system. The relevant events have been reported in Guangdong Nan'ao, Shanghai Nanhui and Zhangbei projects. Rudong offshore wind power project is the first offshore wind power transmission system in China, and it is still under construction. Therefore, it is of great significance to carry out the research on the risk analysis and suppression measures of sub-synchronous oscillation in Rudong wind power MMC-HVDC system. First, the time-domain simulation model of Rudong wind power MMC-HVDC system is built in the PSCAD/EMTDC simulation model. Then, the effects of the number of wind turbine generators, wind power output and the parameters of MMC-HVDC controller on the sub-/super-synchronous oscillation characteristics of the system are further analyzed. Finally, the suppression measures based on supplementary frequency dependent gain control are proposed, the application position of the controller is discussed, and the parameter optimization method of the controller is given. The research content provides a certain guiding significance for the operation and control of Rudong wind power MMC-HVDC.

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MMC-HVDC系统对如东风电次同步振荡的分析与抑制

风电变流器控制系统与MMC-HVDC之间可能存在复杂的相互作用，导致亚/超同步振荡，威胁系统的安全稳定运行。广东南澳、上海南汇、张北等项目均有相关报道。如东海上风电项目是中国首个海上风电传输系统，目前仍在建设中。因此，开展如东风电MMC-HVDC系统次同步振荡风险分析及抑制措施研究具有重要意义。首先，在PSCAD/EMTDC仿真模型中建立如东风电MMC-HVDC系统的时域仿真模型。然后，进一步分析了风力发电机组数量、风力输出功率以及MMC-HVDC控制器参数对系统亚/超同步振荡特性的影响。最后，提出了基于补充频率相关增益控制的抑制措施，讨论了控制器的应用位置，并给出了控制器的参数优化方法。研究内容对如东风电MMC-HVDC的运行控制具有一定的指导意义。

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

2021 Annual Meeting of CSEE Study Committee of HVDC and Power Electronics (HVDC 2021)

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