| 引用本文: | 王同森,张峰,丁磊.考虑最优运行点的超速风电机组调频控制策略[J].电力自动化设备,2021,41(6): |
| WANG Tongsen,ZHANG Feng,DING Lei.Frequency regulation control strategy of over-speed wind turbines considering optimal operation point[J].Electric Power Automation Equipment,2021,41(6): |
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| 摘要: |
| 风电机组凭借超速控制预留备用容量，可以同时实现惯性响应和一次调频2个控制目标。传统的控制策略往往对机组的备用容量利用不足，尚未发挥出超速风电机组的最大调频优势。为此，在深入研究超速风电机组频率控制的基础上，分别分析惯性响应和一次调频与稳态运行点的关系，提出了考虑最优运行点的超速风电机组调频控制策略。该控制策略通过调频能量模型求解出不同风速下的最优运行点，充分利用风电机组的备用容量参与频率调整，以实现频率跌落速度、深度和稳态偏差之间的优化协调。在DIgSILENT中搭建系统仿真模型进行验证，结果表明所提控制策略能够改善不同风速下系统动态频率响应特性，同时可保证风电机组自身运行的稳定性。 |
| 关键词: 风电机组 超速控制 惯性响应 一次调频 控制策略 备用容量 |
| DOI：10.16081/j.epae.202102036 |
| 分类号:TM614 |
| 基金项目:国家电网公司科技项目(含高比例可再生能源的电网频率协同控制技术研究)；山东省自然科学基金青年基金资助项目(ZR2018QEE005)；山东大学青年学者未来计划 |
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| Frequency regulation control strategy of over-speed wind turbines considering optimal operation point |
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WANG Tongsen, ZHANG Feng, DING Lei
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Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education, Shandong University, Jinan 250061, China
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| Abstract: |
| With the reserve capacity reserved by over-speed control, wind turbines can simultaneously achieve two control objectives of inertial response and primary frequency regulation. The traditional control strategy often makes insufficient use of the reserve capacity of wind turbine, and has not yet exerted the maximum frequency regulation advantage of over-speed wind turbine. Therefore, based on the frequency control study of the over-speed wind turbine, the relationships between inertia response and primary frequency regulation and steady-state operation point are analyzed, and the frequency regulation control strategy of the over-speed wind turbines considering the optimal operation point is proposed. The strategy solves the optimal operation points under different wind speeds through the frequency regulation energy model, and the reserve capacity of the wind turbines is fully used to participate in the frequency adjustment, so as to realize the optimal coordination among the frequency drop speed, depth and steady-state deviation. The system simulation model is built in DIgSILENT for verification, the results show that the proposed control strategy can improve the dynamic frequency response characteristics of system under different wind speeds, and ensure the stability of wind turbines. |
| Key words: wind turbines over-speed control inertial response primary frequency regulation control strategy reserve capacity |
