Analysis of the Impact of Constant Voltage DGs on Distributed Voltage Control of Smart Grids by using End-consumers

The presence of new generation of electrical loads equipped with power factor correction devices makes it possible to utilize end-consumers in distribution grids voltage improvement. In this paper, reactive power and voltage control of a smart distribution grid by using end-consumers are studied. The distributed control algorithm is used as a suitable mechanism with less computational burden. In this regard, through the ε-decomposition approach the distribution network is divided into some subnetworks. After that, candidate buses for reactive power are selected and optimal reactive power injections at each candidate bus are acquired by genetic algorithm. Also, the impact of constant voltage distributed generations on voltage control is investigated. Finally, in order to evaluate effectiveness of proposed framework, IEEE 33-bus and 69-bus test systems are used. Simulation results show significant impact of proposed framework on voltage improvement of the distribution network.