考虑电压暂降风险的高压配网动态无功容量优化配置  

Study on high voltage distribution network dynamic optimal allocation of reactive power capacity considering the risk of voltage sag

作　　者：李剑辉[1] 曹阳[2] 辛拓[1] 杨银国[1] 曹一家[2] 李帅虎[2] 

机构地区：[1]广东电网公司电力调度控制中心,广东广州510000 [2]湖南大学电气与信息工程学院,湖南长沙410082

出　　处：《电力系统保护与控制》2014年第8期47-53,共7页Power System Protection and Control

基　　金：国家自然科学基金资助重点项目(61233008);广东电网专题研究项目(036000QQ00120001)~~

摘　　要：高压配网系统中,结合敏感负荷特性,引入电压暂降风险作为电压稳定的考虑对象。选用STATCOM进行动态无功补偿,从暂态研究电压稳定。建立无功优化的单目标函数模型,将电压暂降损失、线路有功损耗、动态无功补偿装置费用经济量化相加。设定多组无功容量并求取相应的总支出费用。通过Matlab软件对费用和容量进行曲线拟合,以计算最优容量。最后以广东电网某片区进行实例仿真,求取对应的最优解,结果显示在提高电力系统的安全可靠性同时也大大降低了经济成本。In high voltage distribution network system, combining with the sensitive load characteristics, this paper introduces risk of voltage sag as stability considerations object. It selects STATCOM device to function as a dynamic reactive power compensation and researches transient voltage stability. Single objective function model of reactive power optimization is put forward, which quantitatively adds the loss of voltage sag, the line active loss and cost of dynamic reactive power compensation devices. Here we calculate the multiple sets of the total cost corresponding to reactive power capacity. Finally, the fitting curve of cost and capacity is given by using MATLAB software to seek the corresponding optimal solution in some area of Guangdong power grid and the result shows that it not only improves the safety and reliability of the power system but also greatly reduces the economic cost.

关 键 词：动态无功补偿 蒙特卡洛 电压暂降风险 高压配网 容量优化 

分 类 号：TM761.12[电气工程—电力系统及自动化]