Authors :
Arotiowa Joel Ilesammi; Tpl Akomolafe Olawale Tayo; Afolabi Ezekiel Bode; Ayanleke Bulaji Blessing; Aminu Odunayo Peter; Olakunle Taiwo Joshua; Odeyemi Adegboyega Bidemi; Ogundare Alaba Georger; Adepitan Oluwaseun David
Volume/Issue :
Volume 11 - 2026, Issue 10 - October
Google Scholar :
https://tinyurl.com/4zev7kvu
DOI :
https://doi.org/10.38124/ijisrt/26Oct1252
Note : A published paper may take 4-5
working days from the publication date to appear in PlumX Metrics, Semantic Scholar, and
ResearchGate.
Abstract :
This research work comprehensively determines and analyzes the electrical power losses incurred within the Akure sub-transmission network (132 kV / 33 kV system) through rigorous mathematical evaluation, line parameter modeling, and multi-year graphical trend analysis based on empirical operational data obtained from the Power Holding Company of Nigeria (PHCN), Akure Business Unit. The empirical findings reveal that actual recorded power losses from the sending-end to receiving-end stations vastly exceed the theoretical, design-calculated transmission losses. A deep diagnostic investigation identified that this severe disparity is primarily driven by physical technical defects: broken strands of overhead conductors, loose and burnt jumper connections, unauthorized substitution of damaged line sections with undersized conductor wires during emergency line repairs, poorly married or improper twisting joints of stranded conductors resulting from substandard technical workmanship, and severe sustained transformer overloading. Additional contributing operational and environmental factors—including high winding temperatures, failing cooling systems, and overgrown vegetation contacting high-tension corridors—are thoroughly documented. Strategic technical and operational interventions are recommended to restore grid reliability and mitigate energy dissipation.
References :
- Butterworth, A. N. (1986). Power Transmission Engineering. Stan Press Ltd., London.
- Freeman, P. J. (1982). Electric Power Transmission and Distribution. Harrap Publishing Company, London.
- Grigsby, L. L. (2006). Electric Power Engineering Handbook. Taylor & Francis Group, New York.
- Grigsby, L. L. (2006). Electric Power Generation, Transmission and Distribution. Taylor & Francis Group, New York.
- Gupta, B. R. (1993). Power System Analysis and Design (2nd ed.). Wheeler Publishing, New Delhi.
- Gupta, B. R. (1998). Principles of Power System Planning. S. Chand & Company Ltd., New Delhi.
- Klemen, D., & Gorald, S. (2000). Excessive transmission line losses caused by unbalanced and non-linear three phase loads using orthogonal decomposition of currents. IEEE Transactions on Power Delivery, 15(2), 621-628.
- Nagrath, I. J., & Kothari, D. P. (1987). Power System Engineering. Tata McGraw-Hill Publishing Company Limited, New Delhi.
- Obaitan, E. B., & Omoregie, A. (2005). Electric Power System (An Analysis). Itua Publishers, Benin City, Edo State, Nigeria.
- Panini, S. A. (1759). Basic Electrical Power Transmission (2nd ed.). Hayden Book Inc., New Jersey.
- Raina, K. B., & Singal, S. K. (1995). Transmission and Distribution of Electrical Power. McGraw-Hill Company, New Delhi.
- Stevenson, W. D. (1982). Elements of Power System Analysis (4th ed.). McGraw-Hill Book Company, London.
- Stevenson, W. D. Jr. (1989). Elements of Power System Analysis (4th ed.). McGraw-Hill Book Company, New York.
- Suriyamongkol, D. (2002). Non-technical losses in Electrical Power Systems (Unpublished master's thesis). Energy Program, High Voltage Engineering, University Study Center.
- Theraja, B. L., & Theraja, A. K. (2005). A Textbook of Electrical Technology (3rd ed.). S. Chand & Company Ltd., New Delhi.
- Thue, W. A. (1999). Electrical Power Cable Engineering. Marcel Dekker Inc., New York.
- Weedy, B. M., & Cory, B. J. (1998). Electric Power Systems (4th ed.). John Wiley & Sons Ltd., England.
- Westinghouse Electric Corporation. (1964). Electrical Transmission and Distribution Reference Book. Central Station Engineers, East Pittsburgh, Pennsylvania.
- Whyte, D. (1999). Technical Loss Reduction in Power Distribution Systems. Power Technology Publications, Sydney.
- Winder, J. J. Jr. (2002). Power Transformer Principles and Applications. PPL Electric Utilities, Allentown, PA.
This research work comprehensively determines and analyzes the electrical power losses incurred within the Akure sub-transmission network (132 kV / 33 kV system) through rigorous mathematical evaluation, line parameter modeling, and multi-year graphical trend analysis based on empirical operational data obtained from the Power Holding Company of Nigeria (PHCN), Akure Business Unit. The empirical findings reveal that actual recorded power losses from the sending-end to receiving-end stations vastly exceed the theoretical, design-calculated transmission losses. A deep diagnostic investigation identified that this severe disparity is primarily driven by physical technical defects: broken strands of overhead conductors, loose and burnt jumper connections, unauthorized substitution of damaged line sections with undersized conductor wires during emergency line repairs, poorly married or improper twisting joints of stranded conductors resulting from substandard technical workmanship, and severe sustained transformer overloading. Additional contributing operational and environmental factors—including high winding temperatures, failing cooling systems, and overgrown vegetation contacting high-tension corridors—are thoroughly documented. Strategic technical and operational interventions are recommended to restore grid reliability and mitigate energy dissipation.