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| 基于模糊分频控制的飞轮储能辅助水电机组一次调频控制研究 |
| Research on Primary Frequency Regulation of Hydroelectric Units Assisted by Flywheel Energy Storage Based on Fuzzy Frequency Division Control |
| 投稿时间：2025-03-27 修订日期：2025-06-10 |
| DOI： |
| 中文关键词: 一次调频 水电机组 飞轮储能 模糊分频 协调控制 |
| 英文关键词: primary frequency regulation hydroelectric units flywheel energy storage fuzzy frequency division coordinated control |
| 基金项目:国家自然科学基金联合基金重点支持项目《水风光储多能互补下水电机组优化运行与协同调控研究》(U2443226)；国家自然科学基金青年项目《水轮发电机组轴系系统瞬态动力学特性深度学习与不稳定控制 》（52309119）； 国家自然科学基金青年项目《高负荷涡轮叶顶气热耦合机理及多源不确定性量化的研究》（52306051） |
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| 中文摘要: |
| 随着风、光等新能源渗透比例不断提高，电网频率质量受到更大冲击，水电机组作为调频电源也面临更严峻的频率调节挑战。飞轮储能凭借响应速度快、短时输出功率大的优势为辅助水电机组一次调频提供了新思路。本文通过建立飞轮储能辅助水电机组一次调频仿真模型，并结合模糊控制理论提出可变滤波时间常数的一次调频指令分解方法，同时引入Logistic函数对不同荷电状态下的飞轮储能出力输出功率进行约束，设计了基于模糊分频控制的飞轮储能辅助水电一次调频控制策略。仿真结果验证了所提策略的有效性，同时与无储能方案相比，本文策略在阶跃扰动下的最大频率偏差减小76.02%，稳态频率偏差减小13.48%，水电出力更加平滑；在连续扰动下，模糊分频策略进一步发挥了飞轮储能作为“功率型”储能的优势，既提升了水电对电力系统的调频支撑能力，又改善了水电机组的运行条件。 |
| 英文摘要: |
| With the increasing penetration of wind, solar, and other renewable energy sources, the quality of grid frequency is facing greater challenges. As a frequency regulation resource, hydroelectric units are also encountering more severe frequency regulation challenges. Flywheel energy storage, with its advantages of fast response and high short-term power output, provides a new approach to alleviating the frequency regulation pressure on hydroelectric units. This paper establishes a simulation model of flywheel energy storage-assisted hydroelectric units for primary frequency regulation and proposes a primary frequency regulation command decomposition method with variable filtering time constants based on fuzzy control theory. Additionally, the Logistic function is introduced to constrain the output power of flywheel energy storage under different states of charge. A flywheel energy storage-assisted hydroelectric primary frequency regulation control strategy based on fuzzy frequency division control is designed. Simulation results validate the effectiveness of the proposed strategy. Compared to the non-energy storage scheme, the proposed strategy reduces the maximum frequency deviation by 76.02% and the steady-state frequency deviation by 13.48% under step disturbances, while also smoothing the hydroelectric output. Under continuous disturbances, the fuzzy frequency division strategy further leverages the advantages of flywheel energy storage as a "power-type" energy storage system, enhancing the frequency regulation support capability of hydroelectric units to the power system and improving the operating conditions of hydroelectric units. |
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