求解含小阻抗支路系统的两阶段牛顿法潮流计算  

Two stage Newton method for power flow calculation of systems with small impedance branches

作　　者：姚玉斌 李权 YAO Yu-bin;LI Quan(Marine Electrical Engineering College,Dalian Maritime University,Dalian 116026,China)

机构地区：[1]大连海事大学船舶电气工程学院,辽宁大连116026

出　　处：《大连海事大学学报》2020年第3期117-123,共7页Journal of Dalian Maritime University

摘　　要：基于小阻抗支路对潮流计算收敛性的影响,提出分两阶段迭代的直角坐标牛顿法:在第一阶段,对雅可比分块矩阵部分元素加以改进以改善雅可比矩阵数值条件,使含小阻抗支路潮流计算可靠收敛;在第二阶段,仍采用传统方法计算雅可比矩阵以提高潮流计算收敛速度.算例分析验证了所提方法的可行性,解决了含小阻抗支路系统潮流计算的收敛性,提高了潮流计算的收敛速度.Based on the analysis of the influence of small impedance branches on the convergence of power flow calculation,a two-stage iterative rectangular coordinate Newton method was proposed.In the first stage,some elements of Jacobian partitioned matrix were improved to improve the numerical conditions of Jacobian matrix,so that the power flow calculation of small impedance branches can converge reliably.In the second stage,the traditional method was still used to calculate Jacobian matrix to improve power flow calculation convergence rate.The analysis of numerical examples verifies the feasibility of the proposed method,which solves the convergence of power flow of systems with small impedance branches,and enhances the convergence speed of power flow calculation.

关 键 词：潮流计算 收敛性 小阻抗支路 雅可比矩阵 

分 类 号：TM712[电气工程—电力系统及自动化]