陈亚宁,李晓明
CHEN Ya-ning,LI Xiao-ming

• 1:武汉大学电气工程学院
• 2:武汉大学电气工程学院 武汉430072
• 3:武汉430072

摘要(Abstract)：

针对配电网的特点和常用前推回代潮流算法存在的不足,提出了一种改进的配电网牛顿潮流算法。该算法从基于基尔霍夫电流定律的Ybus算法出发,将迭代得到的结果作为电流注入模型的牛顿法的初值进行潮流分析。算法通过修改雅可比迭代矩阵元素对PV节点进行处理,通过变换系统节点电流方程来解决多平衡节点系统问题,既可用于放射形配网,又能用于含有环网的配电系统。该算法物理意义清晰,容易实现,收敛性好,给出的算例验证了算法的可行性。
According to the characteristics of the distribution power system and the disadvantage of the back/forward sweep method frequently used,an improved Newton method for the distribution power system is present.Starting from Ybus algorithm that is based on Kchhoff Current Law,it analyzes the power flow by regarding the iterate results as the initial values to Newton power flow method based on the current-injection model.In the presented algorithm,the PV nodes are processed by amending Jacobian matrix elements and the problems for systems of multi-balance buses are settled through converting the current equation of the system nodes.Not only can it fit in with the radioactive distribution nets,but also can solve the problem of the distribution system with loops.The algorithm is liable to implement and has an obvious physical meaning as well as a good convergence characteristic.The example given by the text shows the feasibility of the proposed algorithm.

关键词(KeyWords)： 配电网;Ybus潮流算法;牛顿法;多平衡节点;电力系统
Distribution network;Ybus power flow algorithm;Newton method;multi-balance buspower system

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 陈亚宁,李晓明
CHEN Ya-ning,LI Xiao-ming

DOI: 10.19585/j.zjdl.2008.03.004

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