5.1 IEEE 30-bus system
The data for IEEE 30-bus system has been taken from [40]. The load
flow solution for IEEE 30 bus system is given in Table 5 which shows
that that line-1 (connected between bus 1 and 2) is congested. The power
flow through this line is 1.010 pu. The line flow sensitivity factor
with respect to TCSC control parameter has been computed for the
congested line and is shown in Table 1.
From Table 1, it is observed that line-2, line-3 and line-6 (connected
between bus-1and bus-3, bus 2 and bus-4, bus-2 and bus-6 respectively)
have high negative values of line flow sensitivity factor as compared to
other lines which can also be inferred from Fig. 4. Therefore these
lines have high priority for placement of TCSC in order to mitigate
congestion. Line-2, having the highest negative value of sensitivity
factor, is selected for placement of TCSC to manage congestion.
Table 1 Line flow sensitivity factor of IEEE 30-bus system for
congested line-1