构网型全功率风机并网系统机电尺度建模及动态稳定性分析  

Electromechanical scale modeling and dynamic stability analysis of grid connected full power wind turbine system

作　　者：李尚志 徐泰山 李英彪 任先成 鲍颜红 张金龙 胡家兵[1] LI Shangzhi;XU Taishan;LI Yingbiao;REN Xiancheng;BAO Yanhong;ZHANG Jinlong;HU Jiabing(School of Electrical and Electronic Engineering,Huazhong University of Science and Technology,Wuhan 430074,China;NARI Group Corporation(State Grid Electric Power Research Institute),Nanjing 211106,China;State Key Laboratory of Technology and Equipment for Defense against Power System Operational Risks,Nanjing 211106,China)

机构地区：[1]华中科技大学电气与电子工程学院,湖北武汉430074 [2]南瑞集团有限公司(国网电力科学研究院有限公司),江苏南京211106 [3]电网运行风险防御技术与装备全国重点实验室,江苏南京211106

出　　处：《华中科技大学学报（自然科学版）》2024年第7期12-21,共10页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：南瑞集团有限公司科技项目(SGNR0000KJJS2105692).

摘　　要：针对风力机部分和模拟同步机运行特性的虚拟同步发电机(VSG)控制等呈现机电尺度控制特性,含一次调频控制的构网型全功率风机并网系统存在机电尺度动态稳定问题,建立了系统的机电尺度分析模型,通过特征值和参与因子分析提取了影响系统机电尺度稳定性的两个振荡模式及主导控制环节.针对两个模式应用阻尼转矩分析法研究了各控制环节对系统模式阻尼的作用路径和参数的影响规律.分析发现:对于振荡模式1,网侧端电压控制支路提供负阻尼,受端电压控制参数影响较大,受系统功率水平影响很小;对于振荡模式2,转速控制、桨距角补偿控制和桨距角控制通过影响相应支路的阻尼影响系统总阻尼,功率水平对总阻尼的影响与桨距角控制比例系数强相关.Due to electromechanical scale control characteristics of wind turbine and virtual synchronous generator(VSG)control that simulates operation of synchronous generator,there is the problem of electromechanical dynamic stability in the grid-connected system of grid-forming permanent-magnet synchronous generator(PMSG)-based wind turbine.The electromechanical scale analysis model of the system was established,and two oscillation modes that affected the system stability and dominant control links were extracted through eigenvalue and participation factor analysis.The path for each control link on the system mode damping and the influence law of control parameters for two modes were studied through the damping torque analysis method.It is found that for oscillation mode 1,the grid-side terminal voltage control branch provides negative damping,which is greatly affected by the terminal voltage control parameters and is less affected by the system power level.For oscillation mode 2,the speed control,the pitch angle compensation control and the pitch angle control affect the total damping of the system by affecting the damping of the corresponding path,and the influence of power level on the total damping is strongly related to the proportional coefficient of the pitch angle control.

关 键 词：构网型控制 风力机一次调频 机电尺度 特征值分析 阻尼转矩法 动态稳定性 

分 类 号：TM712[电气工程—电力系统及自动化]