摘要
提出了一种基于广域测量系统(WAMS)的快速搜索潮流转移关键线路的方法。采取先缩后扩的搜索模式,即由断线线路的并行输电线路出发,先缩小范围,寻找其中与断线线路相角相近且潮流转移电气距离最小的线路构成等相角并行线路;再扩大范围,根据潮流走向寻找等相角并行线路的上游或下游线路。等相角并行线路及其上游或下游线路即为潮流转移关键线路。利用图论确定搜索范围,根据电压相角和线路电抗筛选潮流转移关键线路。在IEEE39节点系统进行仿真计算,验证了该方法的有效性和优越性,通过对仿真结果分析,该方法在准确率、计算量以及电网适应性上有显著优势。
A fast search method of key lines in power flow transferring based on WAMS is proposed. The method adopts the search mode of＂first narrow,second expand＂. Starting from the parallel transmission lines of the overload line,firstly narrows the scope to search the equal-phase parallel lines,which are similar to the overload line in phase and had the least flow transferring electrical distance. Secondly expands the scope,seeking the upstream or downstream lines of the equal-phase parallel lines according to the trend of power flow. The equal-phase parallel lines and their upstream or downstream lines are the key lines in power flow transferring. Defines the search scope with graph theory,and screens the key lines in power flow transferring with the phase angle of voltage and line reactance. The validity and superiority of the method are verified by simulation analysis based on IEEE 39 bus system. By comparison with other methods,this method has significant advantages in accuracy rate,computation and network adaptability.
出处
《华北电力大学学报（自然科学版）》
CAS
北大核心
2014年第5期49-54,共6页
Journal of North China Electric Power University：Natural Science Edition
关键词
电力系统
WAMS
潮流转移
图论
电压相角
power system
WAMS
power flow transferring
graph theory
voltage phasor angle
