### Load Flow Solution of the Tanzanian Power Network Using Newton-Raphson Method and MATLAB Software

Received: 15 November 2014    Accepted: 27 November 2014    Published: 5 December 2014
Abstract

Load flow studies are the backbone of power system analysis and design. They are necessary for planning, operation, optimal power flow and economic scheduling and power exchange between utilities. This paper describes modelling procedure and present models of system components used in performing load flow analysis. The developed models are joined together to form a system network representing an approximate Tanzanian power network model. A load flow problem is formulated using the model and a MATLAB program developed using Newton-Raphson algorithm is applied in solving the problem. Simulation results are presented and analysed. The results indicate that the voltage magnitude and voltage phase angle profiles are within the operating limits of the system; it means that the selection of system components and modelling process is appropriate and accurate. The results will form the basis of other critical power system studies of the network in the future such as power system state estimation, optimal power flow and security constrained optimal power flow studies.

 Published in International Journal of Energy and Power Engineering (Volume 3, Issue 6) DOI 10.11648/j.ijepe.20140306.11 Page(s) 277-286 Creative Commons This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. Copyright Copyright © The Author(s), 2024. Published by Science Publishing Group
Keywords

System Component Modelling, Power System, Load Flow Analysis, Newton-Raphson Method, MATLAB Software

References
 [1] W.F. Tinney & C.E. Hart, Power flow solution by Newton’s method, IEEE Transactions on Power Apparatus and Systems, Vol. PAS-86, November 1967: 1447-1460 [2] A.O. Ekwue, & J.F. Macqueen, Comparison of Load Flow Solution Methods, Electric power System Research 22 (1991): 213-222 [3] L. Srivastava, S.C. Srivastava & L.P. Singh, Fast decoupled load flow methods in rectangular coordinates, Electrical Power and Energy Systems (1991): 160-166 [4] A.E. Guile & W.D. Paterson, Electrical Power Systems, Vol.2,( Pergamon Press, 2nd Edition, 1977) [5] W.D. Stevenson Jr, Elements of Power System Analysis (McGraw-Hill, 4th Edition, 1982) [6] B. Stott, Effective starting process for Newton-Raphson load flows, IEE Proceeding, 118, No. 8, August 1971: 983-987 [7] W.F. Tinney & W.L. Powel, Notes on Newton-Raphson method for solution of AC power flow problem, IEEE Short course, Power System Planning, 1971 [8] B. Stott, Fast decoupled Newton Load flow, IEEE Transactions on Power Apparatus and Systems, Vol. PAS-91, October 1972: 1955-1959 [9] B. Stott & O. Alsac, Fast decoupled load flow, IEEE Transactions on Power Apparatus and Systems, Vol. PAS-83, 1974: 859-869 [10] http://www.tanesco.com/national.html [11] http://www.tanesco.com/generation.html [12] http://www.tanesco.com/trans.html [13] S.S. Vadhera, Power System Analysis and Stability (Khanna Publishers, 1st Edition, 1981) [14] J.J.Grainger & W.D. Stevenson Jr. Power System Analysis (McGraw-Hill, Inc. Singapore, 1994) [15] J.A. Momoh, Electric Power System Application of Optimization (CRC Press, 2nd Edition, 2009) [16] A. Monticelli, State Estimation in Electric Power Systems: A Generalized Approach. (Norwell, MA: Kluwer, 1999) [17] J. Arrilaga, C.P.Arnold & B.J. Harker, Computer Modelling of Electrical Power Systems. (New York: Wiley, 1983) [18] A.G. Exposito, Analisis y operacion de sistemas de energia Electrica-Madrid Spain (McGraw-Hill/Interamerican de Espana, 2002) [19] H.Saadat, Power System Analysis. International Edition (McGraw-Hill, Singapore, 2nd Edition, 2004) [20] A.R. Bergen & V.Vittal, Power System Analysis, International Edition (Pearson Prentice Hall, 2nd Edition, 2000) [21] L. Powel, Power System Load Flow Analysis. (McGraw-Hill, New York, 2004) [22] F.L. Alvarado, Solving Power flow Systems with MATLAB implementation of the Power System Application Data Dictionary, Proceedings of the 32nd Hawaii International Conference on System Science , Hawaii, USA , 1999, 1-7 [23] http://www.ee.washington.edu/research/pstca
• APA Style

Mashauri Adam Kusekwa. (2014). Load Flow Solution of the Tanzanian Power Network Using Newton-Raphson Method and MATLAB Software. International Journal of Energy and Power Engineering, 3(6), 277-286. https://doi.org/10.11648/j.ijepe.20140306.11

ACS Style

Mashauri Adam Kusekwa. Load Flow Solution of the Tanzanian Power Network Using Newton-Raphson Method and MATLAB Software. Int. J. Energy Power Eng. 2014, 3(6), 277-286. doi: 10.11648/j.ijepe.20140306.11

AMA Style

Mashauri Adam Kusekwa. Load Flow Solution of the Tanzanian Power Network Using Newton-Raphson Method and MATLAB Software. Int J Energy Power Eng. 2014;3(6):277-286. doi: 10.11648/j.ijepe.20140306.11

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title = {Load Flow Solution of the Tanzanian Power Network Using Newton-Raphson Method and MATLAB Software},
journal = {International Journal of Energy and Power Engineering},
volume = {3},
number = {6},
pages = {277-286},
doi = {10.11648/j.ijepe.20140306.11},
url = {https://doi.org/10.11648/j.ijepe.20140306.11},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijepe.20140306.11},
abstract = {Load flow studies are the backbone of power system analysis and design. They are necessary for planning, operation, optimal power flow and economic scheduling and power exchange between utilities. This paper describes modelling procedure and present models of system components used in performing load flow analysis. The developed models are joined together to form a system network representing an approximate Tanzanian power network model. A load flow problem is formulated using the model and a MATLAB program developed using Newton-Raphson algorithm is applied in solving the problem. Simulation results are presented and analysed. The results indicate that the voltage magnitude and voltage phase angle profiles are within the operating limits of the system; it means that the selection of system components and modelling process is appropriate and accurate. The results will form the basis of other critical power system studies of the network in the future such as power system state estimation, optimal power flow and security constrained optimal power flow studies.},
year = {2014}
}
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JF  - International Journal of Energy and Power Engineering
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AB  - Load flow studies are the backbone of power system analysis and design. They are necessary for planning, operation, optimal power flow and economic scheduling and power exchange between utilities. This paper describes modelling procedure and present models of system components used in performing load flow analysis. The developed models are joined together to form a system network representing an approximate Tanzanian power network model. A load flow problem is formulated using the model and a MATLAB program developed using Newton-Raphson algorithm is applied in solving the problem. Simulation results are presented and analysed. The results indicate that the voltage magnitude and voltage phase angle profiles are within the operating limits of the system; it means that the selection of system components and modelling process is appropriate and accurate. The results will form the basis of other critical power system studies of the network in the future such as power system state estimation, optimal power flow and security constrained optimal power flow studies.
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Author Information
• Electrical Engineering Department, Dar es Salaam Institute of Technology (DIT), Dar es Salaam, Tanzania

• Sections