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A Comparative Analysis of Performance Evaluation of SVC and TCSC for Transmission Loss Reduction on Nigerian 330 kV Grid System Using Self- Adaptive Firefly Algorithm

Flexible alternating current transmission systems (FACTS) devices are emerging technologies that serve as a means of providing reactive power support to mitigate issues of active power loss and voltage instability on existing power grid. The optimal placement, locations and sizes of these devices influence its performance on the grid. This paper presents a comparative analysis of performance evaluation of SVC and TCSC for transmission loss reduction on Nigerian 330kV grid system using self- adaptive firefly algorithm. The results of the analysis showed that with the system reinforced with SVC, the total system loss reduced from 98.21MW to 92.44MW which is about 5.88% reduction. The reduction in active power loss with the optimal location of TCSCs is 94.259MW which amount to 4.02% reduction. An appreciable voltage enhancement occurred at Ayede, New Haven, Onitsha and Kano due to the system reinforcement with SVCs and TCSCs. In all, SVC gives better result than TCSC in term of active power reduction and voltage profile enhancement.