基于自适应预处理的改进CPF-GMRES算法  

Improved CPF-GMRES Algorithm Based on an Adaptive Preconditioner

作　　者：郑浩[1] 赵晋泉[1] 门锟 尹建华 洪潮 

机构地区：[1]河海大学能源与电气学院,江苏南京210098 [2]南方电网科学研究院,广东广州510620

出　　处：《电网与清洁能源》2015年第2期28-32,38,共6页Power System and Clean Energy

基　　金：国家自然科学基金项目(51077042);高等学校博士学科点专项科研基金(20120094110008)~~

摘　　要：针对大规模电力系统电压稳定分析中连续潮流计算遇到的速度瓶颈,提出了一种基于自适应预处理的改进CPFGMRES(m)算法。在连续潮流与GMRES算法结合方式上,构建了旨在减少预处理阵生成次数的自适应预处理结构,即在连续潮流预测步中初始化预处理阵、校正步中采用Broyden方法修正预处理阵,并通过加大数策略和ILU分解补策略计及PV、PQ节点类型转换的影响。经IEEE118和某实际电网算例验证表明算法是有效的。This paper presents an improved CPF-GMRES algorithm based on an adaptive preconditioner to overcome the computational bottleneck in the analysis of large-scale power system voltage stability with CPF. Considering the combination of CPF and GMRES, an adaptive preconditioning structure is proposed to reduce the formation times of preconditioner. The preconditioning matrix is initialized in the predictor of CPF,and modified with Broyden method in the corrector. A large number add-in strategy and a replenished one are applied to deal with the influence of PV, PQ bus-type switching. Numerical results with IEEE118-bus test system and a real power grid verify the effectiveness of the proposed algorithm.

关 键 词：连续潮流 GMRES方法 自适应预处理 ILU分解 节点类型转换 

分 类 号：TM712[电气工程—电力系统及自动化]