含环状配电网的输配全局潮流分布式计算  

Distributed Global Power Flow Calculation for Whole Transmission and Looped Distribution Networks

作　　者：孙宏斌[1] 郭烨[1] 张伯明[1] 

机构地区：[1]清华大学电机系电力系统国家重点实验室,北京市100084

出　　处：《电力系统自动化》2008年第13期11-15,共5页Automation of Electric Power Systems

基　　金：国家高技术研究发展计划(863计划)资助项目(2006AA05Z217);国家重点基础研究发展计划(973计划)资助项目(2004CB217904)~~

摘　　要：传统的基于主从分裂法的全局潮流计算对于辐射状配电网比较有效,但应用于环状配电网则存在收敛性问题。针对该问题,提出了基于配电网等值的主从分裂法,引入边界虚拟功率,将环状配电网的等值网络和循环功率考虑到输电潮流方程中,构造了新的主从分裂迭代格式。给出了算法实现和若干讨论及在线计算的分布式组织。针对算例,对传统方法和新方法的收敛性进行了理论分析,并用数值计算进行了对比验证。结果表明,新方法收敛可靠、通信数据量少,适用于输电和配电控制中心之间的在线分布式计算。The conventional master-slave-splitting based global power flow calculation method for the whole transmission and distribution networks is effective in the case of radial distribution network. However its convergence often faces problems when there are loops in the distribution networks. In order to deal with such a situation, a modified master-slave-splitting method is proposed by equivalenting distribution networks. A new distributed iteration scheme between transmission and distribution power flows is proposed, in which the loop flows in the looped distribution networks can be approximatively considered in the transmission power flow sub-problem, which results in significant improvement in convergence. The new method is discussed in detail. Numerical tests show that the proposed method has good performance in convergence with less requirement in communication, and is suitable for online distributed computation between transmission and distribution control centers.

关 键 词：潮流 主从分裂法 环状配电网 输电网 分布式计算 

分 类 号：TM744[电气工程—电力系统及自动化]