Real time voltage control in distribution network considering renewable energy sources

Nowadays, fossil fuels reduction, environmental impacts, transmission line and substation construction costs, economic and technical efficiency, are leading to increase distributed generation such as renewable energy sources (RES). RES are connected to distribution networks (DN), so we don´t need to transmission equipment. But the reverse power flow from RES causes to change operation method. As we know weather condition have influence on output power in RES. Conventional control methods are not useful for operation and bus voltage variation damage equipment of network and customer. So we see voltage control is important in DN with RES. So developing in communicating, smart sensors and distribution network automation is made possible for real time control. In this paper we propose a real time voltage and reactive power control in distribution network considering RES. Also fuzzy sets theory is combined with partial swarm optimization algorithm to solve the multiobjective voltage control problem.