“…The studies [ 12 , 13 ] have investigated the effectiveness of SOPs in DPNs without other active and reactive power sources. Other studies have combined the SOPs devices and other power sources, such as Capacitors [ 14 ], DGs [ [15] , [16] , [17] ], DGs and NR [ [18] , [19] , [20] , [21] , [22] , [23] ], SDGs [ [24] , [25] , [26] , [27] , [28] , [29] , [30] ], WDGs [ 31 ], and both SDGs and WDGs [ [32] , [33] , [34] , [35] , [36] , [37] , [38] , [39] , [40] ]. The two studies [ 12 , 13 ] have proved that energy loss was reduced and the voltage was improved, although the study [ 12 ] did not consider voltage as an objective like the study [ 13 ].…”