5.1.3. IEEE−13 Bus URDN with D-STATCOM

In this case, a three-phase D-STATCOM is integrated at bus 680. The D-STATCOM is modelled as a PV model with its real power generation set to zero and the lower limit and upper limit for the three-phase reactive power generation are 100 kVAR and 1000 kVAR, respectively. The phase voltages specified at this bus are 1 p.u. Table 8 presents the harmonic power loss and total power loss (including fundamental and harmonic power loss). In comparison with Table 6, it is observed that the integration of the D-STATCOM into the network reduces both the fundamental and harmonic power losses, thereby the total power loss in the network is also reduced. Table 9 presents the fundamental r.m.s voltage profile, the total r.m.s voltage profile, and the THD %.In comparison with Table 7, it is observed that there is an improvement in fundamental r.m.s voltage profile. The minimum fundamental r.m.s voltage in the network without D-STATCOM is 0.8651 p.uat bus−611 for c-phase, whereas its value is 0.8763 p.u at bus−611 for c-phase with integration of D-STATCOM. The maximum THD % in the network is reduced from 5.2263 to 5.1133 with integration of D-STATCOM. Figure 8 shows the comparison of THD % with and

without integration of D-STATCOM. Figure 9 presents the comparison of fundamental r.m.s voltages on the network for the two case studies.


**Table 7.** Fundamental r.m.s voltage, total r.m.s voltages, and THD % in IEEE−13 bus URDN.

**Table 8.** Fundamental and Harmonic power loss for IEEE−13 URDN with D-STATCOM.



**Table 9.** Fundamental r.m.s voltages, total r.m.s voltages, and THD % in IEEE−13 bus URDN with D-STATCOM.

−1

−1 **Figure 8.** Comparison of THD % for case studies on IEEE−13 URDN.

−3

*−3*

−4

**Figure 9.** Comparison of fundamental r.m.svoltages for case studies on IEEE−13 URDN.
