Optimal Placement of TCSC and DPFC on Nigeria Power Transmission Network for Capacity Enhancement

D. O. AMAHIA; P. OSHEVIRE

D. O. AMAHIA Federal University of Petroleum Resources, Effurun, Delta State
P. OSHEVIRE Federal University of Petroleum Resources, Effurun, Delta State

Keywords: Dynamic Power Flow Controller, Thyristor Controlled Series Compensator

Abstract

The increasing demand for electrical energy and the high costs and challenges
associated with building new transmission lines highlight the need to optimize
existing power transmission networks. This study focuses on optimizing or
enhancing Nigeria's 28-bus power transmission system using Flexible Alternating
Current Transmission System (FACTS) devices, specifically, Dynamic Power Flow
Controller (DPFC) and Thyristor-Controlled Series Compensator (TCSC). This
research employed the Bacterial Foraging Optimization Algorithm (BFOA) in
MATLAB to determine the optimal placement and sizing of DPFC and TCSC to
minimize power losses, voltage deviations, and installation costs. Simulation results
were compared, before and after incorporating the FACTS devices. In the base
case, 32% of the buses had voltage profiles outside the acceptable range (0.95 to
1.05 p.u.), with real power loss of 602.91 kW and reactive power loss of 4559.69
kVAR. After optimally placing two DPFC and two TCSC devices in the system, all
bus voltages were regulated to fall between 0.95 and 1.06 p.u., while real and
reactive power losses were reduced by approximately 84.6% and 84.7%,
respectively. This demonstrates a significant improvement in the efficiency and
capacity of the power transmission network.

Author Biographies

D. O. AMAHIA, Federal University of Petroleum Resources, Effurun, Delta State

Department of Electrical and Electronics Engineering,

P. OSHEVIRE, Federal University of Petroleum Resources, Effurun, Delta State

Department of Electrical and Electronics Engineering