构网型直驱风电机组间控制相互作用研究  

Research on control interaction between grid forming direct-drive wind turbines

作　　者：王玉坤 张慕婕 李壮 穆清 王东泽 孙海顺[3] 潘晓杰 邵德军 WANG Yukun;ZHANG Mujie;LI Zhuang;MU Qing;WANG Dongze;SUN Haishun;PAN Xiaojie;SHAO Dejun(Central China Branch of State Grid Corporation of China,Wuhan 430070,China;China Electric Power Research Institute Co.,Ltd.,Beijing 100192,China;Hubei Electric Power Security and High Efficiency Key Laboratory,School of Electrical and Electronic Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]国家电网公司华中分部,湖北武汉430070 [2]中国电力科学研究院有限公司,北京100192 [3]华中科技大学电气与电子工程学院电力安全与高效湖北省重点实验室,湖北武汉430074

出　　处：《电力自动化设备》2024年第3期82-90,共9页Electric Power Automation Equipment

基　　金：国家电网有限公司科技项目(5214DK220006)。

摘　　要：构网型风电控制技术具有很好的弱电网适应性,可以有效避免风电并网次超同步振荡问题。但是虚拟同步控制引入固有的低频特征模式,接入强电网时会发生低频振荡,同时多台构网型风电机组并联运行时存在控制器相互作用。针对此问题,采用特征模式分析方法,研究了基于虚拟同步控制方法的构网型直驱风电机组并联运行时的控制相互作用及主导低频特征模式稳定性。揭示了虚拟惯量控制参数及系统运行方式对构网型风电机组并联运行低频振荡特性的影响。通过详细时域仿真验证了分析结果的正确性。Grid forming wind power control technology has good adaptability to weak power grid,which can effectively avoid to sub-and super-synchronous oscillation problem of the power grid integrated with wind power.However,virtual synchronous control inherently introduces inherent low frequency characteristic mode,and low frequency oscillation occurs when connected to strong power grid.Meanwhile,the controller interaction exists in multi grid forming wind turbines operating in parallel.In order to solve this problem,based on the characteristic mode analysis method,the control interaction and the stability of dominant low frequency characteristic mode of grid forming direct-drive wind turbines operating in parallel are studied based on virtual synchronous control method.The influence of virtual inertia control parameters and system operation mode on the low frequency oscillation characteristics of grid forming wind turbines operating in parallel is revealed.The correctness of analysis results is verified by detail time domain simulations.

关 键 词：构网型直驱风电机组 次同步振荡 弱电网 特征模式分析 

分 类 号：TM614[电气工程—电力系统及自动化]