Abstract
The optimal siting and sizing of battery energy storage system (BESS) is proposed in this study to improve the performance of the seventh feeder at Nakhon Phanom substation, which is a distribution network with the connected photovoltaic (PV) in Thailand. The considered objective function aims to improve the distribution network performance by minimizing costs incurred in the distribution network within a day, comprising of voltage regulation cost, real power loss cost, and peak demand cost. Particle swarm optimization (PSO) is applied to solve the optimization problem. It is found that the optimal siting and sizing of the BESS installation could improve the performance of the distribution network in terms of cost minimization, voltage profile, real power loss, and peak demand. The results are investigated from three cases where case 1 is without PV and BESS installation, case 2 is with only PV installation, and case 3 is with PV and BESS installations. The comparison results show that case 3 provided the best costs, voltage deviation, real power loss, and peak demand compared to those of cases 1 and 2; system costs provided by cases 1, 2 and 3 are USD 4598, USD 5418, and USD 1467, respectively.
Highlights
Nowadays, the electricity demand has been increased due to the growth of population and the rapid improvement of various technologies resulting in the increase of electrical power generation to meet the demand
The optimal siting and sizing of the battery energy storage system (BESS) installation are presented to improve the performance of the realistic distribution network with the connected PV, which is the seventh feeder of Nakhon Phanom substation in Thailand
The simulation results are compared between three cases where case 1 is without PV and BESS, case 2 is with only PV, and case 3 is with both PV and BESS
Summary
The electricity demand has been increased due to the growth of population and the rapid improvement of various technologies resulting in the increase of electrical power generation to meet the demand. Electrical power generation is mostly produced from fossil energy, which directly affects global warming from greenhouse gas emissions. For this reason, the electrical power generations generated from renewable energy sources (RESs) have received huge attention at present because they are clean energy sources that are not running out. In Thailand, the investment of the RESs from companies has been increased according to the government’s encouragement, which directly affects the distribution network operators (DNO) because RESs are connected to the distribution networks. Energy storage systems (ESSs) have been used in the distribution networks with the connected
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