风电场分层一致协同调频控制策略

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  • 1. 湖南省湘电试验研究院有限公司,长沙 410017;

    2. 国网湖南省电力有限公司电力科学研究院,长沙 410007;

    3. 湖南大学 电气与信息工程学院,长沙 410082

盛锴(1983-),正高级工程师,从事新能源并网控制与网源协调研究。E-mail:shengkai0815@163.com

网络出版日期: 2025-10-07

基金资助

湖南省湘电试验研究院有限公司科技项目(XDKY-2024-01)

Hierarchical Consistent Cooperative Frequency Modulation Control Strategy of Wind Farm

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  • 1.Hunan Xiangdian Test Research Institute Co., Ltd., Changsha 410017, China;

    2. State Grid Hunan Electric Power Co., Ltd., Electric Power Science Research Institute, Changsha 410007, China; 

    3. College of Electrical and Information Engineering, Hunan University, Changsha 410082,China

Online published: 2025-10-07

摘要

风电场参与电网调频是应对新能源为主的低惯量新型电力系统频率挑战的重要举措。在风电场参与电网调频过程中,如何实现快速频率支撑并保证风机运行安全性至关重要,为此,本文提出一种风电场分层一致协同调频控制策略。上层为基于模型预测的风电场调频功率优化分配,通过分析风电机组参与调频时的电磁特性和机械特性,建立起风电场的预测模型,设置避免二次跌落和桨距角优化的有功分配优化目标。下层为一致性跟随控制,主导风机接收集中控制器功率分配信号,其他风机通过与临近风机交换惯量因子来实现对主导风机调频参与程度的跟随。仿真结果表明:该策略能有效提高风电场参与调频时的最低风机转速,提升了风电场参与系统调频的稳定性,并实现了非主导风机和主导风机的调频参与程度的跟随,避免了大规模风电场调频优化模型求解的维数灾问题,具备良好的调频效果,对保证电网安全运行具重要意义。

本文引用格式

盛锴1, 谢国鸿2, 刘铸辉1, 戴鑫3, 沈非凡3, 魏娟3 . 风电场分层一致协同调频控制策略[J]. 上海交通大学学报, 0 : 1 . DOI: 10.16183/j.cnki.jsjtu.2025.045

Abstract

The participation of wind farms in grid frequency regulation is an important measure to address the frequency challenges of the new power system dominated by new energy sources, which have low inertia. During the process of wind farms participating in grid frequency regulation, how to achieve rapid frequency support and ensure the safety of wind turbine operation is of vital importance. Therefore, this paper proposes a hierarchical consistent coordinated frequency regulation control strategy for wind farms. The upper layer is the frequency regulation power optimization allocation of wind farms based on model prediction. By analyzing the electromagnetic and mechanical characteristics of wind turbines participating in frequency regulation, a prediction model of wind farms is established, and the optimization objective of active power allocation to avoid secondary drops and optimize pitch angle is set. The lower layer is the consistency following control. The leading wind turbine receives the power allocation signal from the centralized controller, and other wind turbines achieve the following of the frequency regulation participation degree of the leading wind turbine by exchanging inertia factors with neighboring wind turbines. Simulation results show that this strategy can effectively increase the minimum turbine speed of wind farms participating in frequency regulation, improve the stability of wind farms participating in system frequency regulation, and achieve the following of the frequency regulation participation degree of non-leading wind turbines and leading wind turbines. It avoids the dimension disaster problem of solving the large-scale wind farm frequency regulation optimization model and has good frequency regulation effect, which is of great significance for ensuring the safe operation of the power grid.

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