计及高比例新能源多种控制方式及运行约束的连续潮流  

Continuous Power Flow Considering Multiple Control Modes and Operational Constraints of High Proportion of Renewable Energy

作　　者：赵晋泉[1] 汤奕 党杰 崔挺 陈道君 ZHAO Jinquan;TANG Yi;DANG Jie;CUI Ting;CHEN Daojun(Department of Electric Power and Automation Engineering(Shanghai University of Electric Power),Shanghai 200090,China;Central China Branch of State Grid Corporation of China,Wuhan 430077,China;Electric Power Research Institute of State Grid Hunan Electric Power Co.,Ltd.,Changsha 410208,China)

机构地区：[1]教育部海上风电技术工程研究中心(上海电力大学),上海市200090 [2]国家电网有限公司华中分部,湖北省武汉市430077 [3]国网湖南省电力有限公司电力科学研究院,湖南省长沙市410208

出　　处：《电力系统自动化》2024年第16期123-131,共9页Automation of Electric Power Systems

基　　金：国家电网有限公司总部科技项目(5100-202323008A-1-1-ZN)。

摘　　要：高比例新能源电网的电压稳定问题突出,连续潮流是电压稳定分析的重要工具。现有含电压源换流器(VSC)电源电网的连续潮流未充分考虑VSC的多种控制方式以及运行约束,导致电压稳定裕度计算的准确性不足。文中提出同时计及新能源并网VSC的输出电流约束和内电势约束,以及考虑构网型新能源恒电压控制、无功功率-电压下垂控制和跟网型新能源恒无功控制的连续潮流模型和计算方法,给出了由约束导致的控制方式切换逻辑和分岔点类型识别方法。通过改造的IEEE 39节点系统算例结果表明,所提模型与算法提升了传统连续潮流方法对高比例新能源电网静态电压稳定分析的适用性。The voltage stability problem of power grids with high proportion of renewable energy is prominent,and continuous power flow is an important tool for voltage stability analysis.The current continuous power flow of power grids with voltage source converter(VSC)power supply does not fully consider the various control modes and operational constraints of the VSC,resulting in insufficient accuracy of voltage stability margin calculation.In this paper,a continuous power flow model and calculation method considering the output current constraint and internal potential constraint of the VSC with renewable energy integration,constant voltage control and reactive power-voltage droop control of grid-forming renewable energy and constant reactive power control of grid-following renewable energy are proposed,and the switching logic of control mode and bifurcation point type identification method caused by constraints are given.The results of a case with the modified IEEE 39-bus system show that the proposed model and algorithm improve the applicability of the traditional continuous power flow method to the static voltage stability analysis of power grids with high proportion of renewable energy.

关 键 词：高比例新能源 电压稳定性 潮流 电压源换流器 切换逻辑 控制方式 

分 类 号：TM46[电气工程—电器]