Stochastic Voltage/Var control with load variation

Renewable Energy sources are the requirement of the present power system, not only as replenish source but also as distributed generation source. This paper develops a stochastic optimization for Voltage/Var for Optimal Power Flow (OPF) involving load variation. The Renewable Energy Resources (RERs) also invite some imputes along with it such as stochastic behavior. The planning and operation of certain system is also a major challenge for the industry. So, OPF for such system is intriguing problem. One of the important challenge i.e., Voltage/ VAR control is a prime source of complexity and reliability. Therefore, it is fundamental requirement of all the utility companies. There is a need for robust and efficient Voltage VAR optimization technique to meet the peak demand and reduction of the losses. The voltages beyond limit may damage costly sub-station devices and equipment at consumer end as well. Especially, RERs introduces more disturbance and some of the RERs are not capable enough to meet the VAR demand. Hence, there is a strong need for Voltage/ VAR control in RER environment. This paper aims at development of OPF for Voltage VAR control involving RERs using the best available technology. The developed optimization scheme with RERs is tested on 24 bus system with Load Variation into the system.