Solar Power Integration Into the Transmission Network for Reducing Power Loss and Optimizing Generation Costs – A Comparative Analysis

Online First: 13/05/2026

Authors

Corressponding author's email:

kienlc@hcmute.edu.vn

DOI:

https://doi.org/10.54644/jte.2026.2026

Keywords:

Renewables, Transmission network, Power loss, Generation cost, Solar power plants

Abstract

This paper investigates the integration of Solar Power Plants (SPP) into transmission grids through comparative assessment of two single-objective approaches: minimization of power loss and minimization of generation costs, while maintaining system operational safety conditions. Using the Particle Swarm Optimization algorithm on a modified IEEE 30-bus test system, the study sequentially determined the optimal SPP capacity and location for each objectives separately. The findings reveal that strategic placement and sizing are paramount, confirming that system benefits are non-linear with capacity increases and that the optimal bus location is highly site-specific. Crucially, comparative analysis demonstrates the clear superiority of the generation cost minimization objective. This economic-centric strategy not only achieves the largest reduction in total system cost but also concurrently provides superior technical performance by significantly reducing power losses. This dual success is achieved because the optimization algorithm exploits the locational value and zero-fuel-cost characteristic of solar power, inherently guiding the system toward an operating point that is both economically optimal and physically efficient. This research establishes a core principle for modern smart-grids: the most economically efficient design consistently delivers the most technically robust solution.

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Author Biographies

Vo Thanh Thang, Ho Chi Minh City University of Technology and Engineering, Vietnam

Vo Thanh Thang was born in Long An, Vietnam in 1998. He graduated from the Faculty of Electrical Engineering, Ho Chi Minh City University of Technology and Engineering (HCM-UTE) in 2021. He started his master's program at this university in 2022 and successfully defended his thesis in 2024. His main research areas include power system optimization and renewable energy on transmission network.

Email: 2230607@student.hcmute.edu.vn. ORCID:   https://orcid.org/0009-0004-9646-7330

Nguyen Trung Thang, Ton Duc Thang University, Vietnam

Nguyen Trung Thang was born in Binh Thuan province, Vietnam. He received his M.Sc. and PhD degree from Ho Chi Minh City University of Technology and Engineering (HCM-UTE) in 2010 and 2018. His research interests include optimization problems in power systems, optimization renew able energies in power systems, and optimization algorithms. Now, he is working at Ton Duc Thang University, and he is the head of Power System Optimization Research Group, Faculty of Electrical and Electronics Engineering.

Email: nguyentrungthang@tdtu.edu.vn. ORCID:   https://orcid.org/0000-0002-0951-410X

Nguyen Thuy Hang, Ho Chi Minh City University of Technology and Engineering, Vietnam

Nguyen Thuy Hang, born in 1998 in Thua Thien Hue, Vietnam, graduated with a degree in Infrastructure Engineering, specializing in Energy Information, from the Ho Chi Minh City University of Architecture in 2022. She has obtained a master’s degree in Electrical Engineering from Ho Chi Minh City University of Technology and Engineering (HCM-UTE). Her main research areas include electrical grid planning and distribution network systems.

Email: 2390603@student.hcmute.edu.vn. ORCID:   https://orcid.org/0009-0009-6396-3625

Le Chi Kien, Ho Chi Minh City University of Technology and Engineering, Vietnam

Le Chi Kien was born in Ha Noi City, Vietnam in 1975. He received the M.Eng. and Ph.D. degrees in electrical engineering from Nagaoka University of Technology, Japan in 2002 and 2005. In December 2015, he became an Associate Professor at the Faculty of Electrical and Electronics Engineering, Ho Chi Minh City University of Technology and Engineering (HCM-UTE). His research interests include optimization algorithms in power systems and Magnetohydrodynamic power generation system.

Email: kienlc@hcmute.edu.vn. ORCID:   https://orcid.org/0000-0001-8394-5576

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Published

13-05-2026

How to Cite

[1]
Vo Thanh Thang, Nguyen Trung Thang, Nguyen Thuy Hang, and Le Chi Kien, “Solar Power Integration Into the Transmission Network for Reducing Power Loss and Optimizing Generation Costs – A Comparative Analysis: Online First: 13/05/2026”, JTE, May 2026.

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