基于Zbus和前推回代法的配电网潮流计算  

Improved Power Flow Algorithm for Distribution Networks Based on Zbus Algorithm and Forward/Backward Sweep Method

作　　者：张勤[1] 周步祥[1] 林楠[2] 张健美[1] 

机构地区：[1]四川大学电气信息学院,成都610065 [2]四川电力职业技术学院,成都610071

出　　处：《电力系统及其自动化学报》2012年第6期73-77,共5页Proceedings of the CSU-EPSA

摘　　要：针对配电网中有环网的情况,用Zbus法与前推回代法相结合进行潮流计算。采用信号流图中前向通路的概念分析网络的拓扑结构,把网络分解成辐射型结构体和环型结构体。对辐射型结构体的潮流采用前推回代法计算,用并行的方法较大地提高了计算的速度;环型结构体采用Zbus计算法,然后通过每部分计算的结果修正边界节点的电压和功率,达到整个网络计算一致。最后通过实例分析验证了该方法不仅能够很好地处理配电网中的环网问题,而且能提高计算速度。A new Zbus algorithm combined with the forward and backward sweep method is proposed in this paper to deal with power flow calculation of distribution network with ring nets. The topological structure of the network was analyzed by decomposing the branch network into radial and ring net parts through the for- ward path which belongs to the signal flow processing. Forward and backward algorithm was used in radial parts and the calculation speed improved greatly by using parallel computing; Zbus algorithm was applied to the ring net parts. Then the voltage and power of the boundary nodes was corrected by using the previous cal- culation results to keep the calculation of the whole network in consistency. The calculation result of a real dis- tribution network with ring net was given to show that the method not only can process the ring network well, but also was able to improve the calculation speed.

关 键 词：配电网 潮流计算 前向通路 前推回代法 Zbus算法 

分 类 号：TM711[电气工程—电力系统及自动化]