| 引用本文: | 王威儒,曹宇龙,王延旭,等.基于模糊推算和动态控制的风储联合调频控制策略[J].电力系统保护与控制,2025,53(16):14-27.[点击复制] |
| WANG Weiru,CAO Yulong,WANG Yanxu,et al.Wind-storage coordinated frequency regulation control strategy based on fuzzy inference and dynamic control[J].Power System Protection and Control,2025,53(16):14-27[点击复制] |
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| 摘要: |
| 为解决双馈风力发电机(doubly-fed induction generator, DFIG)采用综合惯量控制时固有调速器的抑制作用，及转速恢复时系统频率二次跌落(secondary frequency dip, SFD)的问题，提出了基于模糊推算和动态控制的风储联合调频控制策略。首先分析了电力系统频率响应特性，揭示了输出功率抑制量(output power suppression amount, OPSA)与SFD的产生机理。其次在DFIG频率支撑阶段，基于系统频率指标对综合惯量控制系数进行模糊逻辑设计，减小OPSA影响并提升DFIG调频能力。然后在转速恢复阶段，根据DFIG转速变化动态计算储能有功功率参考值，调整储能输出以减小SFD，并设计变系数比例-积分(proportional-integral, PI)控制以平滑恢复储能荷电状态(state of charge, SOC)。最后，在MATLAB/Simulink中搭建风-储-火四机两区域电力系统仿真模型，验证了所提策略的有效性，保证了高风电渗透率电力系统的频率稳定性。 |
| 关键词: 双馈风机 综合惯量控制 频率响应特性 输出功率抑制量 频率二次跌落 风储联合调频 荷电状态 |
| DOI：10.19783/j.cnki.pspc.241447 |
| 投稿时间：2024-10-29修订日期：2025-03-05 |
| 基金项目:国家电网公司总部科技项目资助(5100- 202399363A-2-2-ZB) |
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| Wind-storage coordinated frequency regulation control strategy based on fuzzy inference and dynamic control |
| WANG Weiru1,CAO Yulong1,WANG Yanxu1,XIN Yechun1,DONG Hongda2 |
| (1. Key Laboratory of Modern Power System Simulation and Control & Renewable Energy Technology of the Ministry
Education (Northeast Electric Power University), Jilin 132012, China; 2. State Grid Jilin Electric Power
Research Institute, Changchun 130021, China) |
| Abstract: |
| To address the limitations of conventional frequency regulation in doubly-fed induction generators (DFIGs), specifically, the suppression effect of the inherent governor during synthetic inertia control and the issue of secondary frequency dip (SFD) during rotor speed recovery, this paper proposes a wind-storage coordinated frequency regulation strategy based on fuzzy inference and dynamic control. First, the frequency response characteristics of the power system are analyzed, and the mechanism behind the output power suppression amount (OPSA) and the occurrence of SFD is revealed. Then, during the frequency support stage of the DFIG, a fuzzy logic-based design is implemented to adjust the synthetic inertia control coefficient according to system frequency indicators, thereby reducing the impact of OPSA and enhancing the frequency regulation capability of the DFIG. During the rotor speed recovery stage, the active power reference for the energy storage system is dynamically calculated based on DFIG rotor speed changes to mitigate SFD. A variable-coefficient PI controller is also designed to ensure smooth restoration of the storage system’s state of charge (SOC). Finally, a wind-storage-thermal four-machine two-area power system model is built in MATLAB/Simulink. Simulation results verify the effectiveness of the proposed strategy in ensuring frequency stability in power systems with high wind power penetration. |
| Key words: doubly-fed induction generator synthetic inertia control frequency response characteristic output power suppression amount (OPSA) secondary frequency dip (SFD) wind-storage coordinated frequency regulation state of charge (SOC) |
