构网型风电机组稳定性提升方法研究综述

Review on the Stability Enhancement Method of Grid-forming Control-based Wind Turbines

  • 摘要: 随着风力发电的规模化增长以及风力发电渗透率的逐步提升,电力系统特性愈加复杂,传统跟网型风力发电无法满足电网稳定性需求。发展构网型风力发电将是提升新型电力系统稳定性和主动支撑能力的关键核心技术之一。首先对现有双馈风电机组和永磁直驱风电机组常见的构网控制策略进行介绍,对比分析各类控制策略的运行特性;然后归纳已有双馈风电机组和永磁直驱型风电机组构网控制稳定性提升方法的研究现状,包含频率稳定性提升方法、电压稳定性提升方法、低频振荡稳定性提升方法和变流器控制系统稳定性提升方法,系统性地梳理并归纳总结了现有风电机组构网控制稳定性提升方法解决的问题和特点;最后,针对构网型风电机组稳定性提升面临的关键问题和挑战,展望了构网型风电机组稳定性分析和控制的研究方向,为推动风电机组构网型控制技术发展进行提供参考借鉴。

     

    Abstract: With the large-scale growth of wind power and the gradual increase in wind power penetration, the characteristics of power systems are made increasingly complex, and traditional grid-following wind power generation is no longer able to meet the needs of grid stability. Grid-forming control in wind turbines is recognized as one of the key core technologies for improving the stability and active support capability of the new power system. Firstly, the common grid-forming control strategies of existing doubly-fed wind turbines and permanent magnet direct-drive wind turbines are introduced, and the operational characteristics of various control strategies are compared and analyzed. Then, the research status of existing stability enhancement methods for grid-forming control in doubly-fed and permanent magnet direct-drive wind turbines is summarized, including methods for frequency stability improvement, voltage stability improvement, low-frequency oscillation stability improvement, and converter control system stability improvement. The problems and characteristics of existing stability enhancement methods for grid-forming control in wind turbines are systematically reviewed. Finally, in view of the key challenges faced by stability enhancement in grid-forming wind turbines, future research directions for stability analysis and control of grid-forming wind turbines are discussed, providing a reference for advancing the development of grid-forming control technology.

     

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