Optimal Placements and Sizes of Capacitor Banks for Voltage Support and Minizing Total Cost

Nguyen Thi Thanh Thuy
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Nguyen Thi Thanh Thuy: Electrical Faculty, Thai Nguyen University of Technology, Thai Nguyen, Viet Nam

International Journal of Research and Scientific Innovation, 2022, vol. 9, issue 10, 22-27

Abstract: This paper presents a method to determine optimal placements and sizes for capacitor banks using constrains about bus voltage and cost function based on the OCP tool. The constrains are considered in three cases, including the limitation of rated compensation value, no compensated limitation of rated value and assigned some buses to compensate. This new approach can help dispatchers evaluate all information about the grid and give suggestions about the compensated process when compared to other cases. Above proposes were applied into a 35 kV grid and simulated on the ETAP software. Simulation results showed optimal placements and rated sizes for capacitor banks very detailed. After implementing capacitors, voltage values at all buses were in allowable range and cost function was minimum. Simulation results provided were also provided some additional information such as power losses in whole grid, installation and operation cost, loss reduction saving, yearly profit, accumulative profit in whole planning period to have total evaluation about the compensation problem.

Date: 2022
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