Multi-objective optimal power flow considering voltage stability index and emergency demand response program

In this paper, optimal power flow problem has been implemented and evaluated simultaneously with the emergency demand response program (EDRP), considering the economic and environmental aspects, as well as the voltage stability enhancement of power system. Moreover, employing DRPs is a way to control customers' electric energy consumption and to improve network reliability. The EDRP is one of the various demand response programs that provides incentives for participants in the program to reduce their consumption during peak hours or shift to off-peak hours. In order to solve the multi-objective function and achieve optimal compromise, the multi-objective Non-Dominated Sorting Genetic Algorithm II was used in this study. The proposed model was implemented on a 30-bus IEEE system. The results show that the proposed model is very effective in reducing fuel costs, emission and improving voltage stability.