5.2 33-bus Indian network
To analyse the effectiveness of the proposed methodology, a 33-bus Indian network [39] has been considered. A comparative study of the results obtained with the proposed methodology and those obtained with the methodology proposed in [39] has been done in order to analyse the performance.
The load flow solution for the considered system gives that line-18 (connected between bus-8 and bus-23 is congested. The power flow through the line is 1.036 pu. The line flow sensitivity factor thus evaluated for the congested system is shown in Table 4 from which it can be observed that line-2, line-14 and line-19 (connected between bus-1and bus-33, bus 12 and bus-31, bus-8 and bus-22 respectively) have high negative values of line flow sensitivity factor as compared to other lines. Therefore these lines have high priority for placement of TCSC in order to mitigate congestion and can also be observed from Fig. 6. Line-2, having the highest negative value of sensitivity factor, is selected for placement of TCSC to manage congestion.
Table 4 Line flow sensitivity factor of 33-bus Indian network for congested line-18