Ali Yosefi - Tabriz Electric Power Distribution Company Tabriz – Iran
Reza Bazyar - Tabriz Electric Power Distribution Company Tabriz – Iran
Ardalan Argang - Tabriz Electric Power Distribution Company Tabriz – Iran
Mohammad Reza Mirzakharni - Tabriz Electric Power Distribution Company Tabriz – Iran

The developments in the technology of distributed generation and the usage of such technology in distribution networks has provided the opportunity to benefit from the usage of these sources to improve the exploitation from the distribution networks some of benefits of distributed generation sources are, loss reduction, voltage profile improvement, increasing network reliability, …. To achieve these goals the problem of allocation, meaning capacity determination, the amount and location of sources are very important. In distribution networks, especially in Iran, because of inefficiency in the loss reduction, voltage amplitude and voltage balance of the voltage profile, the study on the effects of DG sources in order to improve the amplitude and unbalance of the voltage profile and finally give an optimal allocation in reaching are goals is a vital point. In this paper our aim was to optimally allocate hybrid Renewable energy system with Storage System sources. In order to improve the amplitude and voltage unbalance in the system. In other words, our aim was to Delivering the voltage amplitude of buses to acceptable rate, loss reduction and to also reduce voltage unbalance with optimal allocation and DG sources. It is clear that when the sources are allocated in order to increase the voltage amplitude and also a decrease in unbalance, loss will decrease due to an improvement in the voltage profile and a decrease in unbalance. So in this paper optimal placement and sizing of renewable hybrid energy system (Wind/PV/Battery) performed in IEEE 33 and 69 bus test system and part of the distribution network in Tehran.

Test systems; renewable energy; loss; PSOTVIW algorithm