摘要
为了将电力系统的总发电成本降至最低,提出了一种新的优化潮流算法和模型。借助静态安全域计及静态安全约束,建立了支路角与有功注入功率的关系式,并将支路角确定为优化变量进行优化计算,方便快捷地得到最优调度方案。通过对New-England系统和我国某省实际电力系统所进行的计算,证明了该模型和算法的有效性。同时,该模型还可以提供优化后系统各支路的安全裕度,以便调度人员更加直观地了解系统的运行状况。
This paper presents a novel mathematics model for optimal power flow computation based on security region method.The objective of the optimization is to minimize total generation cost.An affine mapping between tree angles and active power injections is derived. The mathematics model uses the branch angles as optimization variables and takes steady-state security constraints into account. Furthermore, the algorithm is with lower computation burden. The feasibility and effectiveness of the proposed mathematics model and algorithm have been shown by numerical examples of the 10-machine 39-bus New-England power system and a 280-bus real power system of China. Besides, the algorithm can also provide security margins of branches after the optimization.
出处
《电力系统及其自动化学报》
CSCD
北大核心
2005年第3期6-9,54,共5页
Proceedings of the CSU-EPSA
基金
国家自然科学基金重大项目(50595413)
国家重点基础研究发展规划项目(2004CB217904)
关键词
电力系统
静态安全
优化潮流
有功功率
支路角
power system
steady-state security
optimal power flow
real power
branch angle
