混合多端交直流电力系统静态电压稳定域的全纯嵌入构建方法  

Holomorphic embedding forming method of static voltage stability region of hybrid multi-terminal AC/DC power system

作　　者：李雪[1] 刘益臣 姜涛[1] 李国庆[1] LI Xue;LIU Yichen;JIANG Tao;LI Guoqing(Key Laboratory of Modern Power System Simulation and Control&Renewable Energy Technology,Ministry of Education,Northeast Electric Power University,Jilin 132012,China)

机构地区：[1]东北电力大学现代电力系统仿真控制与绿色电能新技术教育部重点实验室,吉林吉林132012

出　　处：《电力自动化设备》2025年第4期143-152,共10页Electric Power Automation Equipment

基　　金：国家自然科学基金资助项目(52077029,U23B20131,52377083)。

摘　　要：针对采用牛顿-拉夫逊法构建混合多端交直流电力系统静态电压稳定域边界(SVSRB)存在初值选取困难、收敛性差等问题,提出了一种混合多端交直流电力系统静态电压稳定域的全纯嵌入构建方法。该方法构造基于电压源换流站和电网换相换流站的混合多端直流电力系统全纯嵌入潮流模型并提出相应的求解方法;结合多类型换流站控制策略切换特性,构建混合多端交直流电力系统全纯嵌入连续潮流模型搜索系统的电压稳定临界点;通过所提全纯嵌入构建方法快速搜索相邻电压稳定临界点进而构建系统的SVSRB;通过修改的PJM 5节点和IEEE 118节点交直流测试系统对所提方法进行分析和验证。结果表明,所提全纯嵌入构建方法可实现不同规模混合多端交直流电力系统SVSRB的准确构建。Aiming at the problems of difficult initial value selection and poor convergence in static voltage stability region boundary(SVSRB)construction of hybrid multi-terminal AC/DC power system by using Newton-Raphson(NR)method,a holomorphic embedding forming method of static voltage stability region(SVSR)of hybrid multi-terminal AC/DC power system is proposed.The method constructs the hybrid multi-terminal AC/DC power system including voltage source converter(VSC)and line-commutated converter(LCC),and puts forward the corresponding solution method.Combining the control strategy switching characteristics of multi-type converter station,a holomorphic embedded continuous power flow model of the hybrid multi-terminal AC/DC power system is constructed to trace the voltage stability critical point of the system.The adjacent voltage stability critical point of the system is quickly searched by the proposed holomorphic embedding forming method,and the system SVSRB is constructed.The proposed method is analyzed and verified by the modified PJM 5-bus and IEEE 118-bus hybrid AC/DC testing systems.The results demonstrate that the proposed holomorphic embedding forming method can achieve the accuracy in SVSR construction of hybrid multi-terminal AC/DC power system in different scales.

关 键 词：全纯嵌入构建方法 混合多端直流 换流器 潮流计算 控制策略转换 静态电压稳定域 

分 类 号：TM712[电气工程—电力系统及自动化]