基于虚拟同步相角补偿的构网型双馈风电机组轴系扭振阻尼控制  

Damping Control of Grid-forming DFIG-based Wind Turbine Based on Virtual Synchronous Phase Angle Compensation

作　　者：郭子腾 张宇[1] 张琛[1] 宗皓翔 蔡旭[1] GUO Ziteng;ZHANG Yu;ZHANG Chen;ZONG Haoxiang;CAI Xu(Key Laboratory of Control of Power Transmission and Conversion(Ministry of Education),Department of Electrical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]电力传输与功率变换控制教育部重点实验室(上海交通大学电气工程系),上海200240

出　　处：《高电压技术》2025年第3期1318-1328,I0004,共12页High Voltage Engineering

基　　金：国家重点研发计划(2023YFB4204400)。

摘　　要：风电做构网型控制是缓解新能源高占比电力系统频率和电压稳定问题的有效技术手段。目前针对风电机组的构网型控制大多关注机组的网侧特性,而对构网型控制下机组潜在的机电耦合交互特性解析不足,具体地:构网型控制增强了电网与风机前端的动态交互作用,导致电网侧扰动更易激发机组轴系扭振。为探究构网型控制下机组轴系的扭振特性,对其进行阻尼控制,建立了计及机电耦合特性的构网型风电机组状态空间模型;通过特征值轨迹分析,论证了对构网型机组引入额外扭振阻尼控制的必要性;阐明了经典轴系扭振阻尼策略在构网型控制下的阻尼能力受限机理;基于此提出了一种基于虚拟同步相角补偿的轴系扭振阻尼策略,在不影响构网型机组惯量响应能力的前提下有效地解决了构网型风电机组轴系的欠阻尼甚至振荡发散问题,最后在基于Bladed+NovaCor的联合实时仿真平台上验证了该文理论分析及所提阻尼策略的有效性。The application of grid-forming control(GFM)to wind turbines is an effective technical means to alleviate the frequency and voltage stability problems of power systems with high proportion of new energy.Currently,research pre-dominantly focuses on the grid-side characteristics of grid-forming wind turbine(GFM-WT),whereas insufficient attention has been focused on the potential electromechanical coupling interaction characteristics.Specifically,GFM greatly enhances the dynamic interaction between the grid and the drivetrain of GFM-WT,which means that drivetrain torsional vibration can also be stimulated by perturbation from the grid easily.To investigate the drivetrain torsional vi-bration characteristics of GFM-WT and damping the torsional vibration,the state-space model of GFM-WT considering the electromechanical coupling characteristics is established first.Then,by utilizing eigenvalue locus analysis,the neces-sity of introducing additional torsional vibration damping control for GFM-WT is demonstrated.The mechanism behind the limited application of traditional drivetrain torsional vibration damping method(TDTVD)in GFM-WT is explored.On this basis,a drivetrain torsional vibration damping method based on the virtual synchronous phase angle compensation(VSPAC)is proposed,which effectively solves the problem of under-damping or even vibration divergence of the GFM-WT’s drivetrain.Finally,the theoretical analysis results and the efficacy of this proposed method are validated by the Bladed+NovaCor co-simulation real-time platform.

关 键 词：构网型控制 虚拟同步机控制 双馈风电机组 轴系扭振特性 阻尼控制 虚拟同步相角补偿 

分 类 号：TM614[电气工程—电力系统及自动化]