Now a day we face growth of load and dispersion of consumers in electricity networks which have made long distance between generators and consumers in wide electric network because of providing primary conditions of power plants (primary fuel, the appropriation of geographical location to the kind of generation, eliminating environmental pollution from residential places and …). This leads to a lot of loss during network transition and reduction of network reliability. Therefore, in recent years, use of dispersed generators for making generators and consumers closer together and reducing losses in network has been investigated. In this case, the renewable energy sources were center of attention (solar energy, wind, water, and …). In this research, we investigate the effect of single phase dispersed generation sources on distribution network for correcting the voltage imbalance. In this way, a distribution network is simulated in MATLAB software and imbalance is made by an asymmetric load and a gravitational search algorithm is used for correcting voltage loss between the phases of circuit for determining the best response of control circuit of dispersed generation source. Finally, it can be concluded from the output of the circuit that the presence of dispersed generation sources is in continuous mode and it was able to correct the imbalance of voltage significantly.
