计及分布式电源的改进配网潮流计算方法  

Improved Power Flow Calculation Method for Distribution Network with DGs

作　　者：梁宵[1] 焦彦军[1] 蒋晨阳[1] 

机构地区：[1]华北电力大学电气与电子工程学院,河北保定071003

出　　处：《华北电力大学学报（自然科学版）》2016年第4期59-65,共7页Journal of North China Electric Power University：Natural Science Edition

摘　　要：针对多节点形式分布式电源并入配电网后导致传统潮流计算方法并不适用的问题,对牛顿潮流计算方法进行改进,提出每次迭代时结合梯度下降法与牛顿法对雅克比矩阵中各元素进行优化。改进算法解决了配网中由于分布式电源节点类型丰富导致传统算法计算困难的问题,同时,也解决了由于配网线路阻抗比值较大导致雅克比矩阵收敛困难的问题。根据改进算法提出以零阻抗连接编号方案为基础的潮流计算流程。通过数学理论分析与IEEE33节点仿真验证,改进算法在收敛性、收敛速度等方面较传统方法均有所提高。经由验证结果表明,改进算法适用范围较广,对于含分布式电源的配网快速潮流分析与实时调度计算提供有效的参考。The algorithm is improved by adjusting the Newton Method,which solves the problem of the traditional power flow calculation method for distribution network with multi-node Distributed Generation（ DG）. The elements in the Jacobian matrix are optimized by Steepest Descend Method and Newton Method at each iteration. The improved method solves the difficulty of the rich types of the DG nodes and the convergence difficulties of the high ratio of resistance and reactance in the Jacobian matrix. The new power flow calculation method uses the zero-impedance connection numbering program. Theoretical analysis and the IEEE33 node stimulation show that the improved algorithm can do a better job in terms of convergence and convergence rate than other traditional methods. According to the results,the new algorithm has a wider range of applications and is more suitable for fast flow analysis of power flow for distribution network with DGs and real-time scheduling computing.

关 键 词：分布式电源 配网潮流计算 雅克比矩阵 改进算法 零阻抗连接编号 

分 类 号：TM744[电气工程—电力系统及自动化]