大规模风电接入对电网动态频率响应时空分布的影响  

Impact of Large-scale Wind Power Integration on Space-time Distribution of Power System Dynamic Frequency Response

作　　者：张海锋 李德鑫 李秀杰 庄冠群 ZHANG Haifeng;LI Dexin;LI Xiujie;ZHUANG Guanxiong(State Grid Jilin Electric Power Co.Ltd.,Electric Power Research Institute,Changchun Jilin 130000;Northeast Electric Power Design Institute Co.Ltd.,of China Power Engineering Consulting Group,Changchun Jilin 130022)

机构地区：[1]国网吉林省电力有限公司电力科学研究院,吉林长春130000 [2]中国电力工程顾问集团东北电力设计院有限公司,吉林长春130022

出　　处：《东北电力大学学报》2022年第5期74-82,共9页Journal of Northeast Electric Power University

基　　金：吉林电网惯量评估及调频约束下新能源接纳能力预测技术研究(SGJLDK00DWJS2000100)。

摘　　要：规模化风电并网将影响电力系统频率动态响应特性.文中将主导频率动态响应的同步发电机动态模型与电网直流潮流模型相结合,推导出考虑网络拓扑结构的机电动态模型.在此基础上,以母线频率为状态量解析电网频率动态响应的时空分布特征及其关键影响因素.分析常规控制下的风电机组在系统频率动态响应下与电网的交互过程,并结合推导出的母线频率时域响应模型揭示风电并网对系统频率动态响应时空分布特征的影响机理,提出计及风电并网的系统频率动态响应时空分布量化指标.文中通过IEEE 16机68节点系统母线频率响应轨迹的量化分析直观说明了电网频率动态响应的时空分布特征,并研究了风电并网对的电网频率动态响应时空分布的影响.Large-scale wind power integration will affect the frequency dynamic response characteristics of the power system.In this paper,the dynamic model of the synchronous generator that dominates the frequency dynamic response is combined with the DC power flow model of the power grid,and the electromechanical dynamic model considering the network topology is derived.On this basis,the time and space distribution characteristics of the power grid frequency dynamic response and its key influencing factors are analyzed with the bus frequency as the state quan-tity.Analyze the interaction process of wind turbines under conventional control with the grid under the system frequency dynamic response,and combine with the derived bus frequency time-domain response model to reveal the influence mechanism of wind power grid connection on the time and space distribution characteristics of sys-tem frequency dynamic response,and propose to take wind power into account Grid-connected system frequency dynamic response time and space distribution quantitative index.In this paper,through the quantitative analysis of the frequency response trajectory of the bus of the IEEE 16-machine 68-bus system,the temporal and spatial dis-tribution characteristics of the frequency dynamic response of the power grid are visually explained,and the influ-ence of wind power grid connection on the temporal and spatial distribution of the frequency dynamic response of the power grid is studied.

关 键 词：风电并网 电力系统 动态频率响应 时空分布 

分 类 号：TM711[电气工程—电力系统及自动化]