几种提高牛顿法潮流收敛性的初值给定方法研究  

Research on Several Initial Value Methods of Improved Newton-Raphson Power Flow Convergence

作　　者：李智欢[1] 朱乔木 苏寅生[1] 韩云飞[2] 黄河[1] 陈金富[2] 

机构地区：[1]中国南方电网有限责任公司,广东广州510623 [2]华中科技大学强电磁工程与新技术国家重点实验室,湖北武汉430074

出　　处：《电工电气》2015年第10期1-5,41,共6页Electrotechnics Electric

摘　　要：针对牛顿法潮流计算的初值敏感问题,考虑了两种含小阻抗支路的病态系统和重负荷病态系统对潮流收敛性的影响,结合IEEE9、IEEE39和某市电网等多个算例,对比分析了平直启动、直流潮流法、PQ分解法、高斯-塞德尔法等多种初值给定的方法。算例计算结果表明,选择合适的方法给定迭代初值,可较好解决用牛顿法进行潮流计算时因为初值选取不当导致的潮流收敛过慢或者无法收敛的问题。In allusion to the initial value sensitivity problem of Newton-Raphson power fl ow calculation, this paper considered the impacts of the morbidity system containing small impedance subcircuits and the heavy loading morbidity system on the power fl ow calculation convergence of power systems. Combining with several calculated examples of IEEE9, IEEE39 and certain city power grid, this paper compared and analyzed straightness starting, direct current power fl ow, PQ decomposition, Gauss-Seidel etc multiple initial value methods. The result of calculation shows that the problems of slow convergence rate and no convergence because of improper initial value selection can be effectively solved by using initial values provided by suitable methods.

关 键 词：牛顿法潮流计算 初值敏感 潮流收敛 初值 

分 类 号：TM744[电气工程—电力系统及自动化]