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