AN IMPROVED NEWTON METHOD FOR RADIAL DISTRIBUTION SYSTEM LOAD ANALYSIS

Hassan A. Kubba

doi:10.31026/j.eng.2006.04.17

Article Details

AN IMPROVED NEWTON METHOD FOR RADIAL DISTRIBUTION SYSTEM LOAD ANALYSIS

Authors:

Hassan A. Kubba

Publisher:

University of Baghdad

Journal:

Journal of Engineering Vol.12 Issue 4, pp.1122-1135

Document Type:

Article

Publication Date:

1/2006

Document Language:

English

Document ID (Org No.):

2001379961

pISSN:

2520-3339

DOI:

10.31026/j.eng.2006.04.17

Keywords:

Abstract:

 This paper presents a modified Newton method of load flow analysis for radial distributionsystems. It is derived with the Jacobian matrix is in UDUT form, where U is a constantupper triangular matrix depending solely on system topology and D is a block diagonalmatrix. With this formulation, the conventional steps of forming the Jacobian matrix,LU factorization and forward/back substitution are replaced by back/forward sweeps on radialfeeders with equivalent impedances. The method has advantages over Newton’ s method interms of speed of solution (no. of iterations), and reliability of convergence by inserting a minimization technique (Cubic Interpolation Technique). The algorithm exhibits a control of the convergence. As such the method converges for cases when conventional Newton’ s method and some other popular methods diverge. Two large distribution systems of 490 nodes and 722 nodes with different r/x ratio in line impedance are used to examine the performance of the method. These tests have shown that the proposed method is as robust and efficient as the forward/back sweep method. The proposed method can be extended to the solution of three phase unbalanced representation.

Article Details

AN IMPROVED NEWTON METHOD FOR RADIAL DISTRIBUTION SYSTEM LOAD ANALYSIS

Authors:

Hassan A. Kubba

Publisher:

University of Baghdad

Journal:

Journal of Engineering Vol.12 Issue 4, pp.1122-1135

Document Type:

Article

Publication Date:

1/2006

Document Language:

English

Document ID (Org No.):

2001379961

pISSN:

2520-3339

DOI:

10.31026/j.eng.2006.04.17

Load Flow

Radial Distribution System

Newton's Method

Cubic Interpolation Technique

Issues

Article Details

AN IMPROVED NEWTON METHOD FOR RADIAL DISTRIBUTION SYSTEM LOAD ANALYSIS

Authors: Hassan A. Kubba

Publisher: University of Baghdad

Journal: Journal of Engineering Vol.12 Issue 4, pp.1122-1135

Document Type: Article

Publication Date: 1/2006

Document Language: English

Document ID (Org No.): 2001379961

pISSN: 2520-3339

DOI: 10.31026/j.eng.2006.04.17

Load Flow

Radial Distribution System

Newton's Method

Cubic Interpolation Technique

Issues

Authors:

Hassan A. Kubba

Publisher:

University of Baghdad

Journal:

Journal of Engineering Vol.12 Issue 4, pp.1122-1135

Document Type:

Article

Publication Date:

1/2006

Document Language:

English

Document ID (Org No.):

2001379961

pISSN:

2520-3339

DOI:

10.31026/j.eng.2006.04.17