考虑频率模态特性的虚拟同步机惯量与阻尼分析和控制设计  

Analysis and control design of inertia and damping of VSG considering frequency modal characteristics

作　　者：陶俊 高晖胜 辛焕海 王子骏[1] 杨永恒 吴英姿 TAO Jun;GAO Huisheng;XIN Huanhai;WANG Zijun;YANG Yongheng;WU Yingzi(Polytechnic Institute,Zhejiang University,Hangzhou 310027,China;College of Electrical Engineering,Zhejiang University,Hangzhou 310027,China;Electric Power Research Institute of State Grid Hubei Electric Power Co.,Ltd.,Wuhan 430070,China)

机构地区：[1]浙江大学工程师学院,浙江杭州310027 [2]浙江大学电气工程学院,浙江杭州310027 [3]国网湖北省电力有限公司电力科学研究院,湖北武汉430070

出　　处：《电力自动化设备》2023年第9期18-26,共9页Electric Power Automation Equipment

基　　金：国家电网有限公司科技项目(4000⁃2022⁃22070A⁃1⁃1⁃ZN)。

摘　　要：随着新能源渗透率的不断提高,系统调频资源不足且分布不均特性明显,节点频率响应之间差异大.设备的调频控制设计不仅需要考虑系统频率响应中的全局分量,也需要考虑非全局分量.为此,提出兼顾频率多模态分量的虚拟同步机惯量与阻尼设计方法.首先,分析了虚拟惯量与阻尼控制对不同频率模态分量的影响;其次,利用调频统一结构模型,揭示了高阶调频动态对不同频率分量可表现不同惯量与阻尼的特性,进而基于此特性提出多模态惯量和阻尼控制设计方法;最后,仿真验证了提出的多模态调频控制策略的有效性,可同时改善多频率分量响应特性.With the increasing penetration rate of renewable energy,the system frequency modulation resour-ces are insufficient and unevenly distributed,and the difference between node frequency response is large.The frequency modulation control design of the equipment needs to consider not only the global component in the system frequency response,but also the non-global component.Therefore,an inertia and damping design method of virtual synchronous machine considering frequency multi-modal components is proposed.Firstly,the influence of virtual inertia and damping control on different frequency modal components is analy-zed.Secondly,based on the unified structure model of frequency modulation,the high-order frequency regu⁃lation dynamics can exhibit different inertia and damping characteristics for different frequency components,and then a multi-modal inertia damping control design method is proposed based on this characteristic.Finally,the effectiveness of the proposed multi-modal frequency control strategy is verified by simulation,which can improve the response characteristics of multi-frequency components at the same time.

关 键 词：频率响应差异 多模态特性 统一结构模型 模态惯量和阻尼 调频控制策略 

分 类 号：TM761[电气工程—电力系统及自动化]