  In the recent years, due to the economic and environmental requirements, the
use of distributed generations (DGs) has increased. If DGs have the optimal
size and are located at the optimal locations, they are capable of enhancing
the voltage profile and reducing the power loss. This paper proposes a new
approach to obtain the optimal location and size of DGs. To this end, exchange
market algorithm (EMA) is offered to find the optimal size and location of DGs
subject to minimizing loss, increasing voltage profile, and improving voltage
stability in the distribution systems. The effectiveness of the proposed
approach is verified on both 33- and 69-bus IEEE standard systems.
