By Topic

Convergence analysis on the power flow methods for distribution networks with small impedance branches

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
Yubin Yao ; Dept. of Autom. & Electr. Eng., Dalian Maritime Univ., Dalian ; Dan Wang ; Zhiliang Wu ; Yong Chen

The small impedance branch is a primary factor that results in the divergence of the power flow methods. The study of the methods of power calculation in Newton-Raphson (N-R) method and backward/forward sweep (BFS) method indicates that the method of power calculation together with small impedances may result in the convergence problem. The impact of small impedance branches on the convergence of the two power flow methods is different because the two methods are different in mechanism. So the ways to improve the convergence performance of the power flow methods are also different. Based on theoretical analysis, a branch dividing method is presented which divides a transformer with small impedance into a transformer with normal impedance and a capacitive line. The proposed method can conveniently and effectively deal with the convergence problem in the BFS method caused by small impedance transformer branches, and experimental results illustrate the effectiveness of the method.

Published in:

Electric Utility Deregulation and Restructuring and Power Technologies, 2008. DRPT 2008. Third International Conference on

Date of Conference:

6-9 April 2008