The Repository @ St. Cloud State

Open Access Knowledge and Scholarship

Date of Award


Culminating Project Type

Starred Paper

Degree Name

Electrical Engineering: M.S.


Electrical Engineering


College of Liberal Arts

First Advisor

Md M. Hossain

Second Advisor

Ling Hou

Third Advisor

Aiping Yao

Creative Commons License

Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 4.0 License.

Keywords and Subject Headings

OPF, Voltage control, Reactive Power Dispatch, TLBO, PowerWorld


This research presents a Teaching Learning Based Optimization (TLBO) algorithm to solve Optimal Reactive Power Dispatch (ORPD) problem. The primary objective of this paper is to minimize the active power transmission losses by the optimal settings of the control variables within their limits and avoiding violations on the constraints. TLBO is a population- based algorithm and requires few algorithm specifications to compute making it a recommended option to solve various degrees of optimization problems. The TLBO algorithm was implemented using MATLAB programming and by incorporating MATPOWER, the algorithm was tested on IEEE 30-bus test system to solve the ORPD problem. The optimal values obtained from the TLBO algorithm was validated on PowerWorld- a power system visualization tool. The results obtained from the algorithm were compared with other algorithms in the literature and TLBO proved to be an efficient prediction method for solving the ORPD problem.


I would like to thank my Parents Dr & Mrs. Emmanuel Nwosu for their constant love, financial and moral support.

I would like to sincerely thank my advisor Dr Hossain, Md M, Department of Electrical and Computer Engineering for all suggestions and pushing me for successful execution of the research.

I would like to express my gratitude to members of my committee Dr Yao Aiping and Dr Hou Ling for their constructive criticism during the early phase of the research.

I would also like to thank Dr & Mrs. OluAde Ajayi for making St Cloud a home and for the guidance and prayers.

Lastly, it wouldn’t have been possible without the constant support of my ELEGang and siblings, who believed in me to finish strong.

TLBOcodeforResearch.m (10 kB)

basecasevaluesA.PWB (38 kB)
PowerWorld for base case

PoweWorld for First Phase

PowerWorld for Final Phase

PowerWorld for Optimized OPF