*5.2. Discussions*

Table 21 compares the performance of Case E with other cases. As it can be observed, compared with Case B, the performance of Case E in terms of obtaining better values for *f*1, *f*2, and *Ploss* is improved. Case E also shows better performance rather than Case C. All objectives are improved considerably compared with Case C. Note that, due to the presence of wind farms, *f*2 is enhanced, while improving on the loadability index. In addition, Case E is compared with Case D, and it can be observed that all objectives are improved. *f*1 is improved significantly. However, *f*2, *f*3, and *Ploss* are not enhanced considerably. This is due to the fact that wind power generation uncertainty has a grea<sup>t</sup> impact on all objectives, which in both Case E and Case D are considered. While, the performance of Case F is better than Case E considering *f*1, *f*2, and *Ploss*, and is slightly more than *f*3.


**Table 21.** Comparison of di fferent cases.
