V. Rahi - Department of Electrical Engineering, Shahid Bahonar University of Kerman, Kerman, Iran
A. Abdollahi - Department of Electrical Engineering, Shahid Bahonar University of Kerman, Kerman, Iran
E. Heydarian-Forushani - Department of Electrical and Computer Engineering, Qom University of Technology, Qom, Iran
M. Rashidinejad - Department of Electrical Engineering, Shahid Bahonar University of Kerman, Kerman, Iran
A. Sheikhi Fini - Power System Planning and Operation Research Department, Niroo Research Institute, Tehran, Iran

One of the most important challenges of smart grids is the congestion of transmission lines. A flexible smart grid with demand-side resources can be a suitable solution to manage transmission lines congestion. This paper proposes a multi-objective model with the aim of congestion management through generation rescheduling considering cost and emission purposes in a flexible smart grid. An inconvenience cost for consumers is defined to model the consumers’ unsatisfactory as a consequence of participating in demand response programs (DRPs). Furthermore, a smart grid flexibility index (SGFI) has been presented to show the available flexibility of smart grid as a result of DRPs and gas turbine generators as fast response resources. The DRPs could increase the flexibility of the smart grids due to their impact on flattening the load curve, but this may cause some inconveniences for consumers. On the other hand, participation of consumers in DRPs and the power output gas turbine  are associated with uncertainty. In this paper, the uncertainty of consumer's participation in the DRPs has been modeled by Fuzzy-Markov. The proposed multi-objective particle swarm optimization (MOPSO) has been implemented on the IEEE ۳۰-bus system. The results show that the total operation cost including the generation cost, DRP cost, inconvenience cost of consumers, and pollution is reduced. In fact, the share of generation of expensive generators is reduced.

Congestion management, Consumer's unsatisfactory, Demand response programs (DRP), Generation rescheduling, Smart grid flexibility index (SGFI)