To
check the performance of suggested approach, results are compared with base
case and DEPSO based method. As in loadability problem, voltage constraint is
the main constraint which should be satisfied. To study voltage profile in
detail for updated load, the voltage profile along with voltage angles for base
case and DEPSO are studied and mentioned in Table 2. On looking at 2nd column of Table 2 that minimum voltage of 0.961 p.u. occurs at node 8 in base
case. After solving loadability problem using DEPSO and proposed approach,
minimum voltage of magnitude 0.95 (approx) occurs at node 8 (as tabulated in 4th and 6th column of Table 2) which is in prescribed limits while minimum
voltage angle -3.96 degree occurs at node 19 in base case which further decreases
to -10.91 and -9.67 degrees in DEPSO and proposed approach respectively.