Sahar Seyyedeh Barhagh - Faculty of Electrical and Computer Engineering ،University of Tabriz ،Tabriz, Iran
Farkhondeh Jabari - Faculty of Electrical and Computer Engineering ،University of Tabriz ،Tabriz, Iran
Behnam Mohammadi-Ivatloo - Faculty of Electrical and Computer Engineering ،University of Tabriz ،Tabriz, Iran
Kazem Zare - Faculty of Electrical and Computer Engineering ،University of Tabriz ،Tabriz, Iran

These days, due to increase of electrical power consumption, power systems have faced voltage drop and incensement of active power losses. To solve these problems, distributed generation (DG) units can be the best option. Optimal placement of DGs can result in reduction of active power losses in transmission lines and therefore improvement of voltage profile. In this paper, optimal allocation problem of DG units has been studied through a mathematical model under demand response program. In order to prove efficiency of proposed model, a 9-bus radial distribution network has been analyzed.

Distributed generation units; Distribution ،networks; Optimal allocation; Demand response program