Optimal placement of TCSC for sensitivity reduction using heuristic methods

Power grid is mostly vulnerable to trained terrorists. The grid might go into instability or even blackout when exposed to terrorism attacks. One of the most significant attacks is impinging upon substations in the power grid. The purpose of this paper is to reduce congestion of grid lines when a substation is eliminated from the system. To simulate such attacks، the substations in the system are removed one by one to determine the substation whose elimination would cause the highest grid congestion. The next step is congestion management by TCSC which is one of the FACTS elements. CFA-PSO and ABC algorithms are used to locate the TCSC in optimal place. To evaluate the capability of the proposed method، it is applied to IEEE 14 bus standard system and the results are analyzed. Simulation results show that congestion decreases when substation is eliminated.