Sustainable Generation and Transmission Expansion Planning Using MOPSO-BPSO in Electrical Grid

Astuty; Zainal Sudirman

doi:10.22146/jnteti.v14i3.20795

Astuty Department of Electrical and Installation Engineering, Akademi Komunitas Industri Manufaktur Bantaeng, Bantaeng, Sulawesi Selatan 92460, Indonesia
Zainal Sudirman Department of Mechanical Maintenance Engineering, Akademi Komunitas Industri Manufaktur Bantaeng, Bantaeng, Sulawesi Selatan 92460, Indonesia

DOI: https://doi.org/10.22146/jnteti.v14i3.20795

Keywords: Environmental Sustainability, Generation Expansion Planning, Transmission Expansion Planning, MOPSO, BPSO

Abstract

As of 2023, approximately 85% of power plants operating in South Sulawesi relied on fossil fuels, such as coal, gas, and oil. To meet the increasing demand for electricity while reducing carbon emissions, it is essential to integrate renewable energy sources into the power system. Renewable energy not only helps conserve fossil fuels but also supports global environmental sustainability. South Sulawesi possesses significant hydro potential, offering opportunities to develop both small and large-scale hydroelectric power plants (pembangkit listrik tenaga air, PLTA). This study employed a multi-objective particle swarm optimization (MOPSO) approach to develop optimal scenarios for generation expansion planning (GEP), and binary particle swarm optimization (BPSO) to determine the necessary transmission expansion planning (TEP). The planning process was supported by long-term load forecasting using the moving average method based on historical electricity demand data in South Sulawesi. Results showed that the proposed integrated GEP and TEP optimization framework successfully identified an optimal scenario maximizing renewable energy used while ensuring transmission reliability. By 2030, PLTA is projected to contribute 67.9% of total electricity generation. Meanwhile, steam-fired power plants (pembangkit listrik tenaga uap, PLTU) become the mainstay with capacities reaching 437.5 MW. To support this scenario, nine new transmission lines are needed, along with the expansion of 25 existing lines to accommodate increased power flow within the interconnection system.

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