双馈电机变速调相系统低电压穿越过程的转子稳定性控制研究  

Research on rotor stability control during low-voltage traversal of doubly fed machine variable speed phase modulation system

作　　者：何聚彬 赵博超 于维耀 张镇浩 姚芳[2] He Jubin;Zhao Bochao;Yu Weiyao;Zhang Zhenhao;Yao Fang(State Grid Jibei Zhangjiakou Wind and Solar Energy Storage and Transportation New Energy Co.,Ltd.,Zhangjiakou 075000,China;School of Electrical Engineering,State Key Laboratory of Reliability and Intelligence of Electrical Equipment,Hebei University of Technology,Tianjin 300401,China)

机构地区：[1]国网冀北张家口风光储输新能源有限公司,河北张家口075000 [2]河北工业大学电气工程学院省部共建电工装备可靠性与智能化国家重点实验室,天津300401

出　　处：《可再生能源》2024年第7期979-985,共7页Renewable Energy Resources

基　　金：河北省自然科学基金资助项目(E2022202056)。

摘　　要：双馈风机运行于电动模式下,对电网具有一定的惯量支撑能力,但支撑能力有限,且电网低电压穿越过程中转子存在失控问题。对此,文章提出了一种在电网电压跌落时转子的稳定性控制技术。首先,在双馈风机转子转轴上外挂飞轮,增大系统惯量,稳定转速;其次,在电网电压跌落时进行电压补偿、削弱转子侧反电动势,稳定转子电流;最后,在MATLAB/Simulink平台中搭建了系统仿真模型进行仿真验证。结果表明,采用转子稳定性控制技术的双馈风机,转子转速抗突变能力提高了20%,转子电流跌落值减少了45%,验证了所提转子稳定性控制技术的有效性和可靠性。The doubly fed induction generator, operating in electric mode, has a certain inertia supporting capacity to the power grid, but the supporting capacity is limited, and the rotor is out of control during the low-voltage crossing of the power grid. In this paper, a kind of rotor stability control technology is proposed when voltage sags in power system. Firstly, a flywheel is attached to the rotor shaft of a doubly fed fan to increase the inertia of the system and stabilize the speed of the rotor. Secondly, voltage compensation is used to reduce the back electromotive force of the rotor side and stabilize the rotor current when the voltage of the power grid falls, the simulation model of the system is built in MATLAB/Simulink platform, and the results show that the anti-mutation ability of the rotor speed of the doubly-fed fan is improved by 20% by adopting the rotor stability control technology, the rotor current drop value is reduced by 45%, which verifies the validity and reliability of the proposed rotor stability control technique.

关 键 词：双馈风机 低电压穿越 转子转速 转子电流 

分 类 号：TK81[动力工程及工程热物理—流体机械及工程] TM722[电气工程—电力系统及自动化]