6 Conclusion

In this paper, impact of TCSC is analysed in managing congestion of transmission lines. A static model of TCSC is considered in problem formulation. Since FACTS devices involve a huge investment, therefor its optimal location plays an important role in order to achieve the market economics. A sensitivity based approach using power flow in lines with respect to TCSC control parameters is proposed to find the optimal location of TCSC. The line flow sensitivity factor is calculated for each line based on which the optimal location of TCSC has been determined. The effectiveness of the proposed method has also been analysed for minimizing the cost of TCSC installation as well as total generation cost. The proposed method has been tested on IEEE 30-bus system, IEEE 118-bus system and 33-bus Indian network. It has been observed from test results that the placement of TCSC in most sensitive line determined from sensitivity analysis gives minimum installation cost of TCSC as well as minimum generation cost as compared to other potential locations for TCSC placement. The proposed method is found to be effective for small as well as large power system network.

Appendix A

Table A1 PSO parameters values