摘要
提出一种考虑电网特性的、多准则动态无功优化配置方法。该方法在考虑电网拓扑结构和功率分布特性的基础上,以节点电压稳定的重要度指标,筛选出维持系统暂态电压稳定的重要节点;结合基于偏差量的节点电压稳定的薄弱度排序,快速确定补偿装置的候选安装点;利用改进轨迹灵敏度指标,分析补偿装置配置位置不同时,对多个关键故障的极限切除时间的提升效果和对全系统暂态电压稳定的改善效果的差异,选取最优安装点。最后,利用暂态电压稳定标准校验安装效果,确定最优容量,获得兼顾技术性与经济性的最优配置方案。所提方法通过IEEE 39节点算例进行了仿真验证。
A multi-criterion method of optimal dynamic var configuration considering the characteristics of power grid is presented,which,based on the consideration of grid topology and power distribution,adopts the importance index of nodal voltage stability to screen out the important nodes for maintaining the transient voltage stability of power system;sorts the nodes according to the nodal voltage stability weakness index based on voltage deviation to quickly determine the candidate installation locations of dynamic var compensation devices;applies the improved trajectory sensitivity index to analyze the effect of installation location on the critical clearing time of major faults and the transient voltage stability of whole system for selecting the optimal installation location;checks the installation effect according to the transient voltage stability standard to decide the optimal capacity for obtaining a technically and economically optimized configuration scheme. The proposed method is verified by the simulation for IEEE 39-bus system.
出处
《电力自动化设备》
EI
CSCD
北大核心
2016年第9期127-133,共7页
Electric Power Automation Equipment
基金
国家高技术研究发展计划(863计划)项目(2012-AA050217)
国家自然科学基金重点资助项目(61233008)
国家自然科学基金面上项目(51577053)~~
关键词
暂态电压稳定
节点电压
薄弱度
重要度
改进轨迹灵敏度指标
动态无功优化
无功配置
transient voltage stability
nodal voltage
weakness
importance
improved trajectory sensitivity index
dynamic var optimization
var configuration
