| 引用本文: | 闫克非,李国庆,张儒峰,姜涛,辛业春.风电场和多端柔性直流输电协同参与的受端电网分阶段调频控制策略[J].电力自动化设备,2025,45(4):28-36 |
| YAN Kefei,LI Guoqing,ZHANG Rufeng,JIANG Tao,XIN Yechun.Phased frequency regulation control strategy for receiving-end power grid with coordinated participation of wind farms and multi-terminal high voltage direct current[J].Electric Power Automation Equipment,2025,45(4):28-36 |
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| 摘要: |
| 针对大规模新能源和直流接入导致的受端电网惯量水平低和一次调频能力弱的问题，提出风电场与多端柔性直流输电系统参与受端电网调频的协同控制策略。提出基于调频能力系数的风电场自适应虚拟惯量和下垂控制策略，实现风电场差异化调频；采用自适应下垂控制实现受端换流站调频功率在其余各换流站之间的合理分配，减小功率支援对交流电网频率稳定的影响；设计多调频资源协同配合的分阶段调频控制策略，通过建立受端电网频率响应模型进一步分析控制系统的稳定性。通过仿真验证所提控制策略的可行性和有效性，结果表明，所提控制策略在改善受端电网频率稳定性的同时，减小了对风电机组运行状态的影响，且避免了其他交流电网的频率安全问题。 |
| 关键词: 多端柔性直流输电系统 风电场 受端电网 频率支撑 分阶段调频控制 |
| DOI：10.16081/j.epae.202501017 |
| 分类号:TM72 |
| 基金项目:国家自然科学基金联合基金资助项目(U2066208) |
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| Phased frequency regulation control strategy for receiving-end power grid with coordinated participation of wind farms and multi-terminal high voltage direct current |
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YAN Kefei, LI Guoqing, ZHANG Rufeng, JIANG Tao, XIN Yechun
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Key Laboratory of Modern Power System Simulation and Control & Renewable Energy Technology, Ministry of Education, Northeast Electric Power University, Jilin 132012, China
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| Abstract: |
| Aiming at the problem of low inertia and poor primary frequency regulation ability for receiving-end power grid caused by the access of large scale renewable energy and DC, a coordinated control strategy of wind farms and multi-terminal high voltage direct current systems participating in frequency regulation of receiving-end power grid is proposed. The adaptive virtual inertia control and droop control strategies of wind farms are proposed based on the frequency regulation capability coefficient to realize differential frequency regulation of wind farms. The adaptive droop control is adopted to realize the rational allocation of frequency regulation power of receiving-end converter station among other converter stations, so as to reduce the impact of power support on the frequency stability of AC power grid. A phased frequency regulation control strategy with the coordination of multiple frequency regulation resources is proposed, and the stability of control system is further analyzed by establishing the frequency response model of the receiving-end power grid. The feasibility and effectiveness of the proposed control strategy are verified by the simulation, and the results show that the proposed control strategy minimizes the impact on the operation status of wind turbines while improving the frequency stability of receiving-end power grid, and avoids the frequency safety issue of other AC power grids. |
| Key words: multi-terminal high voltage direct current system wind farms receiving-end power grid frequency support phased frequency regulation control |
