Power System Stability Enhancement of 132kV North-East Power Transmission Network Using STATCOM and SVC Hybrid Flexible Alternating Current Transmission System

Among other issues that are affecting the power supply, the Nigerian power system is linked to epileptic supply, low system stability, large losses, weak bus voltages, line overloads, improper generating station placement, and lengthy transmission lines. This impacted overall power quality. Demands for additional electricity are growing daily, and the transmission and distribution networks must meet these demands while also ensuring improved power quality, reduced costs, and minimal environmental impact. Either alone or in combination, Flexible Alternating Current Transmission System (FACTS) devices are used to increase the stability of the power system. The impact of hybrid FACTS devices on the voltage and power stability of the 132kV power transmission network in North-Eastern Nigeria is examined in this study. Ant colony optimization techniques were used to deploy the FACTS devices on the network after they were modelled. The network behaviours were examined when no FACTS devices were connected, when only Single FACTS was connected, and when hybrid FACTS was connected to the network. The simulations were conducted using hybrid FACTS devices—static var compensator (SVC) and static synchronous compensator (STATCOM)—in MATLAB's Power System Analysis Toolbox (PSAT). The results show that adding STATCOM alone to the network improves the voltage profile by 9%, while adding a combination of SVC and STATCOM together improves the voltage profile by 12%. When STATCOM and hybrid (SVC & STATCOM) are linked to the network, the actual power loss decreased from 16% to 10%, respectively.