Power Flow Solution for Radial Distribution Networks

• Main Author: Chung , Tze Ling
• Format: Final Year Project
• Language: English
• Published: 2009
• Online Access: http://utpedia.utp.edu.my/3279/1/0001.pdf; http://utpedia.utp.edu.my/3279/

Power flow analysis on distribution systems is not having enough attention as compared to transmission systems. Generally, distribution networks are radial and the resistance to reactance ratio, R/X is high. By making use of the special structure of radial network, a simple method is first developed to obtain the connection matrix and hence the nodes beyond any specified branch, which is the branch-node matrix by using the special structure of radial distribution network. The necessary formulas are derived to calculate the receiving-end voltage in terms of the sending-end voltage and the receiving-end line flows. At each and every of the iterations, receiving-end voltages are updated by computing the line losses. The main aim of this project is to attain a simple power flow method which is suitable for solving radial distribution networks and develop the necessary MATLAB programme. The specially designed MATLAB programme to solve radial distribution networks was successfully developed and tested on several standard radial distribution networks. Meanwhile, Newton-Raphson power flow method is developed to test the radial networks for strengthening the validity of the results obtained. Besides, comparisons are made between both Newton-Raphson power flow method and proposed approach. The proposed approach for radial distribution network can be implemented on any practical data.