直驱风电场经MMC-HVDC并网送端系统小扰动稳定建模及分析  

Small disturbance stability modelling and analysis in the sending end system of direct-drive wind farms connected to the grid via MMC-HVDC

作　　者：季一润 槐青 田蘅 刘黎 马群[1] 袁茜 宋鹏 JI Yirun;HUAI Qing;TIAN Heng;LIU Li;MA Qun;YUAN Xi;SONG Peng(Electric Power Research Institute,State Grid Jibei Electric Power Co.,Ltd.,Beijing 100045,China;Beijing Kedong Electric Power Control System Co.,Ltd.,Beijing 100194,China;State Grid Electric Power Research Institute Co.,Ltd.,Nanjing 211106,China;Zhoushan Power Supply Company,State Grid Zhejiang Electric Power Co.,Ltd.,Zhoushan 312000,China;Key Laboratory of Control of Power Transmission and Conversion,Ministry of Education,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]国网冀北电力有限公司电力科学研究院,北京100045 [2]北京科东电力控制系统有限责任公司,北京100192 [3]国网电力科学研究院有限公司,江苏南京211106 [4]国网浙江省电力有限公司舟山供电公司,浙江舟山312000 [5]上海交通大学电力传输与功率变换控制教育部重点实验室,上海200240

出　　处：《武汉大学学报（工学版）》2024年第10期1434-1441,共8页Engineering Journal of Wuhan University

基　　金：国家电网公司总部科技项目(编号:5500-202140505A-0-5-ZN)。

摘　　要：直驱风电场经基于模块化多电平换流器(modular multilevel converters,MMC)的高压直流(high voltage direct current,HVDC)并网系统存在宽频振荡风险。为探究其振荡机理,为实际工程参数优化提供指导,对直驱风电场经MMC-HVDC并网系统进行小扰动稳定建模及分析。首先,建立考虑MMC内部二倍频谐波动态及风电机组锁相环动态的送端系统小扰动稳定性分析模型。然后,基于特征值变化轨迹分析有功功率、MMC交流电压控制参数及风电机组锁相环控制参数对送端系统稳定性的影响。最后,通过PSCAD电磁暂态仿真模型验证了小扰动稳定分析模型及稳定分析结论的正确性。The transmission systems of direct-drive wind farms connected with grid via modular multilevel convert based high voltage direct current(MMC-HVDC)face the risk of broadband oscillation.To explore the oscillation mechanism and provide guidance for parameter optimization in practical engineering,this paper conducts small disturbance stability modeling and analysis of the transmission system of direct-drive wind farm via MMC-HVDC.First,a small disturbance stability analysis model of the sending end system is established,which considers the internal second harmonic dynamics of MMC and the dynamics of the wind turbine phase locked loop(PLL).Then,the impacts of active power,alternating current voltage control parameters of MMC and wind turbine PLL control parameters on the sending end system stability are analyzed based on the eigenvalue change trajectory.Finally,the correctness of the small disturbance stability analysis model and the stability analysis conclusion are verified by using PSCAD electromagnetic transient simulation model.

关 键 词：直驱风场 MMC-HVDC 线性化模型 特征值法 稳定性分析 

分 类 号：TM72[电气工程—电力系统及自动化]