基于改进前推回代法的弱环配电网三相潮流计算  

Three-phase power flow method for weakly meshed distribution systems based on modified back/forward sweep method

作　　者：顾晨[1] 乐秀璠[1] 张晓明[2] 

机构地区：[1]河海大学能源与电气学院,江苏南京210000 [2]华北电力大学电气与电子工程学院,河北保定071003

出　　处：《电力系统保护与控制》2010年第19期160-164,共5页Power System Protection and Control

摘　　要：基于配电系统特有的网络结构,对配网潮流计算的前推回代法作了改进,提出了一种适合弱环配电网的三相潮流算法。该算法采用了一种独特新颖的分层方法,将网络节点从末稍节点依次向上层搜索至根节点,形成了一个链式层次的分层节点数组,省去计算过程中对节点和支路的复杂编号;同时考虑到配电网的三相参数不对称和三相负荷不平衡问题比较突出,直接采用相域模型进行计算;而对于环网问题,则运用功率补偿的方法进行了有效处理。通过对IEEE33节点系统的验算,证明了该算法的有效性。Based on the special network structure of distributed system,a suitable three-phase power flow algorithm for a weakly meshed distributed network is proposed,with the improvement of the back/forward sweep method.In this algorithm,a novel layer back/forward method is put forward,in which the nodes are searched from the peripheral nodes up to the root nodes,and a chain level node array is formed without the complex number of nodes and branches. Because of the asymmetry of three-phase parameters and imbalance of three-phase load in distributed network,the phase field model is used in this paper. The meshes are well disposed of with a power compensation method.The presented method is tested by IEEE33 nodes system and the power flow solution is given to show the validity of the method.

关 键 词：弱环配电网 三相潮流 分层 前推回代 改进 

分 类 号：TM744[电气工程—电力系统及自动化]