电工技术学报  2019, Vol. 34 Issue (23): 4982-4990    DOI: 10.19595/j.cnki.1000-6753.tces.181472
电力系统 |
基于限转矩控制的风储联合调频控制策略
赵晶晶, 李敏, 何欣芹, 朱仁杰
上海电力大学电气工程学院 上海 200090
Coordinated Control Strategy of Wind Power and Energy Storage in Frequency Regulation Based on Torque Limit Control
Zhao Jingjing, Li Min, He Xinqin, Zhu Renjie
Electric Power Engineering Shanghai University of Electric Power Shanghai 200090 China
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摘要 为了增强含风电的微电网在孤岛运行时的动态频率调节能力,提出在变速恒频双馈感应风力发电机(DFIG)中附加限转矩控制的惯性控制方法,在负荷扰动时更快地提供频率支撑。详细分析了限转矩控制中功率增量和有功减载量对DFIG转速恢复速度和二次频率跌落的影响,提出DFIG风电机组和储能系统的协调频率控制策略。通过风电机组快速惯量吞吐能力与储能功率输出灵活性的结合,风储相互协调完成动态频率调节,消除限转矩控制产生的二次频率下跌,增强频率的动态调节能力。最后,在DIgSILENT/PowerFactory仿真软件中搭建了10kV微电网模型,验证了所提控制策略的有效性。
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关键词 双馈感应风力发电机限转矩控制惯性二次频率跌落储能    
Abstract:In order to enhance the dynamic frequency regulation ability of microgrid containing wind power in island operation, a new inertial control method based on torque limit control is added to the doubly fed induction generator (DFIG), which provide faster frequency support when the load is disturbing. The effects of the incremental power and the curtailment power on the rotor speed recovery and secondary frequency drop of DFIG are analyzed in detail, the coordinated frequency control strategy of DFIG wind turbine and energy storage system is proposed. By combining the fast inertia output capacity of the wind turbine and the flexibility of the stored energy output, the wind turbine and energy storage are coordinated with each other to complete the dynamic frequency regulation, the secondary frequency drop generated by the torque limit control is eliminated and the dynamic regulation ability of the frequency is enhanced. Finally, a 10kV microgrid model was built in the DIgSILENT/PowerFactory simulation software, the simulation results showed that the proposed control strategy is valid.
Key wordsDoubly fed induction generator (DFIG)    torque limit control    inertia    secondary frequency drop    energy storage   
收稿日期: 2018-09-10      出版日期: 2019-12-11
PACS: TM71  
基金资助:国家重点研发计划资助项目(2018YFB0905105)
通讯作者: 李 敏 女,1992年生,硕士研究生,研究方向为微电网频率控制,风电、储能频率控制等。E-mail: muziamo@163.com   
作者简介: 赵晶晶 女,1980年生,博士,副教授,研究方向为配电网无功优化、风电并网电压稳定与控制、微电网优化与控制。E-mail: jjzhao_sh@163.com
引用本文:   
赵晶晶, 李敏, 何欣芹, 朱仁杰. 基于限转矩控制的风储联合调频控制策略[J]. 电工技术学报, 2019, 34(23): 4982-4990. Zhao Jingjing, Li Min, He Xinqin, Zhu Renjie. Coordinated Control Strategy of Wind Power and Energy Storage in Frequency Regulation Based on Torque Limit Control. Transactions of China Electrotechnical Society, 2019, 34(23): 4982-4990.
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