Impact of Distributed Generation on a Distribution Network Voltage Sags in Baghdad City

Voltage sags are considered as one of the most detrimental power quality (PQ) disturbance due to their costly influence on sensitive loads. This paper investigates voltage sag mitigation in distribution network following occurrence a fault. Two software used this work; 1st is MATLAB R2017a for implementation Differential Evaluation (DE) algorithm find optimal location and size DG while 2nd CYME 7.1 system modelling analysis. The effectiveness proposed method tested by implementing it IEEE 33-bus system, then applied Al-Masbh Baghdad city case study. aims enhance profile, loss reduction, relieve lines overloading, placement distributed generation (DG). results indicate efficiency comparing with Real Coded Genetic Algorithm (RCGA).