极坐标形式的暂态稳定约束最优潮流的简约空间内点法  

A reduced-space interior point method for transient stability constrained optimal power flow in polar coordinate

作　　者：夏小琴[1] 韦化[1] 

机构地区：[1]广西大学电力系统最优化研究所,广西南宁530004

出　　处：《电力系统保护与控制》2012年第4期14-19,25,共7页Power System Protection and Control

基　　金：国家自然科学基金项目(50867001)~~

摘　　要：暂态稳定约束最优潮流是协调电力系统运行动态安全性与经济性的有效措施。针对直角坐标及混合极坐标模型存在形式复杂、不易实现的问题,建立了极坐标形式的暂态稳定约束最优潮流模型。该模型将潮流方程及转子运动方程统一到极坐标形式下,简洁明了,便于记忆及编程。为提高求解速度,采用了原始-对偶内点法和简约空间技术相结合的简约空间内点法。这一方法非常适合于自由度小的大规模暂态稳定约束最优潮流问题,它缩减了求解修正方程所耗用的时间,提高了计算效率,降低了内存消耗。对9节点至300节点等五个系统的计算表明了所提方法的鲁棒性、高效性。Transient stability constrained optimal power flow （TSCOPF） is an effective measure to coordinate the dynamic security and economy of power system. The TSCOPF model is established in polar coordinate in order to avoid the problems of complexity of programming and difficult realization caused by the rectangular coordinate or mixed coordinate. The model unifies power flow equation and rotator movement equation into polar coordinate and is simple, clear, and convenient for memory and programming. In order to improve the computational speed, the combination of reduced-space approach with primal-dual interior point method is used. The method is suitable for solving large-scale TSCOPF problem whose degrees of freedom is relatively small. It can reduce the computational time caused by solving the correction equation, improve the computational efficiency and reduce the memory usage. Numerical simulations on the five test systems ranging from 9 to 300 nodes, have shown that the proposed method is robust and efficient.

关 键 词：最优潮流 暂态稳定 简约空间 内点法 极坐标 

分 类 号：TM744[电气工程—电力系统及自动化]