Using Exponential Modeling for DLC Demand Response Programs in Electricity Markets

Deregulation of power system has introduced new objectives and subjects in electric power systems. Along with expansion of deregulated systems in countries, new subjects such as Demand Response Programs (DRPs) have been provided to evaluate the effect of demand-side in electricity market. Participation of demand- side in network improves power system utilization, operation and also has a great effect on system social welfare. DRPs are divided into two categories which are priced-based and incentive-based demand response programs.With Regard to the problem, in this study an exponential modeling of Direct Load Control programs (DLC) in investigated as incentive-based DRPs. In order to more realistic modeling of demand response to DLC rates, the nonlinear behavioral characteristic of elastic loads is incorporated. Iranian power system with load profile of the peak day is considered to evaluate the effectiveness of the proposed technique. Simulation results demonstrate the great impact of running DLC programs using the proposed exponential model. Simulation results are carried out on MATLAB software by numerical simulations.