基于多目标袋獾算法的含VSC换流器交直流系统最优潮流  

Optimal Power Flow of AC/DC System With VSC Converter Based on Multi-objective Tasmanian Devil Algorithm

作　　者：束洪春[1,2] 廖孟黎 安娜[1,2] 王文韬 SHU Hongchun;LIAO Mengli;AN Na;WANG Wentao(Faculty of Electric Power Engineering,Kunming University of Science and Technology,Kunming 650500,Yunnan Province,China;Collaborative Innovation Center for Fault Detection and Protection Control of Intelligent Power Grid Jointly Built by Province and Ministry(Kunming University of Science and Technology),Kunming 650500,Yunnan Province,China)

机构地区：[1]昆明理工大学电力工程学院,云南省昆明市650500 [2]省部共建智能电网故障检测与保护控制协同创新中心(昆明理工大学),云南省昆明市650500

出　　处：《电网技术》2023年第11期4679-4687,共9页Power System Technology

基　　金：国家自然科学基金项目(52037003);云南省重大科技专项计划项目(202002AF080001)。

摘　　要：针对传统算法易陷入局部最优、参数选取困难,难以对多目标函数统一协调等缺陷,计及不同换流站的控制方式下提出一种基于多目标袋獾优化算法(multipleobjective Tasmaniandeviloptimization,MOTDO)的含电压源换流器(voltage source converter,VSC)交直流系统的最优潮流算法。构建计及换流器损耗的交直流潮流计算模型,以系统最小经济成本、系统最小损耗和线路最小电压偏差为待优化目标,引入惩罚函数建立多目标潮流优化模型;在不同的控制方式下,采用MOTDO算法进行潮流优化,得到完整且均匀分布的帕累托(Pareto)集合并根据评估指标得到Pareto中的最优解;以含多端直流网络的改进型IEEE 30节点系统为例验证MOTDO算法对潮流优化的有效性,为须考虑多目标的交直流混合电网的安全稳定运行提供参考。The traditional algorithms are apt to local optimization,but hard to select parameters and coordinate multi-objective functions.In view of the above problems,an optimal power flow algorithm based on the multi-objective Tasmanian Devil optimization algorithm(MOTDO)with the AC/DC system containing VSCs is proposed considering the control mode of different converter stations.A calculation model of the AC/DC power flow is established taking the loss of the converters into account.Taking the minimum economic cost of the system,the minimum loss of the system and the minimum voltage deviation of the line as the objective to be optimized,a multi-objective power flow optimization model is constructed by introducing the penalty function.Under different control modes,the MOTDO algorithm is used to optimize the power flow to obtain a complete and uniformly distributed Pareto set and its optimal solution with the evaluation index.An improved IEEE 30-node system with multi-terminal DC network is taken as an example to verify the effectiveness of the MOTDO algorithm for the power flow optimization,providing a reference for the safe and stable operation of the multi-objective AC/DC hybrid power grid.

关 键 词：交直流系统 柔性直流输电 最优潮流 多目标优化 惩罚函数 

分 类 号：TM721[电气工程—电力系统及自动化]