In this paper, heuristic technique based minimization of losses in the power system using Unified Power Flow Controller is proposed. Here, the Artificial Bee Colony Algorithm (ABC) optimizes the location of the UPFC, while the generator outage occurs. The optimum location is referred as the maximum power loss bus, because the generator outage affects the power flow constraints like power loss, voltage magnitude, real and reactive power. By using UPFC at the optimum location minimum power loss is attained. Then UPFC is placed in the optimum location and the corresponding results are analyzed. The proposed method is implemented in the MATLAB/Simulink platform and the performance is evaluated by using the comparison power loss at different conditions. The comparison results demonstrate the superiority of the proposed approach and confirm its potential to solve the problem.

In this paper a heuristic method for minimizing active power loss of the power system using Unified Power Flow Controller is proposed. The novelty of the proposed method is to use the Bat algorithm to find optimal location of UPFC. Bat algorithm provides superior searching ability. Here, the bat algorithm optimizes location of UPFC when the generator outage occurs in the system. Generator outage affects the power flows, bus voltages, power loss, real and reactive power. By placing The UPFC at the optimal location, performance of the system is analyzed. The proposed method is implemented in the MATLAB/Simulink platform and tested on IEEE 30 bus standard bench mark system. The proposed method's performance is evaluated by comparison with different conditions. The comparison results proved the effectiveness of the proposed method and confirm its potential to minimize power loss.

In this paper a heuristic technique based optimal location of UPFC to improve the performance of power system is proposed. Here, the maximum power loss bus is identified as the most suitable location for fixing the UPFC. Generator outage affects the power flow constraints such as power loss, voltage, real and reactive power flow. Generator outage at different buses is introduced and the performance of the system is analyzed. The optimum location has been determined using the Artificial Bee Colony Algorithm (ABC) under this condition. By connecting UPFC at optimal location given by ABC algorithm, the power loss in the system is reduced and voltage profile is improved. Proposed work is implemented in the MATLAB and tested on IEEE 30 bus system. Initially the single generator outage is introduced at different buses in the system and afterwards double generator outage is introduced. In these conditions, the voltage profile and the power loss is analyzed at normal condition, outage condition and after connecting UPFC whose location given by proposed ABC algorithm. Performance of this algorithm is evaluated by comparing the results with those of different techniques. The comparison results demonstrate the superiority of the proposed approach and confirm its potential to solve the voltage stability problem.