Increased penetration of intermittent renewable energy resources is pushing the grid to prepare more reserves to meet the supply and demand balance. Demand response (DR) is an efficient strategy to reduce the overall load at peak times. In order to fully utilize the application of DR and make DR capable of actively supporting grid operations at all times

this paper builds a DR and wind farm integrated economic dispatch model. The objective is to minimize the total operation costs

such as fuel cost

startup cost

greenhouse gas (GHG) emission costs

and DR cost. DR maximum participating time and DR ramp rate constraints are considered. A system with 10 traditional units

one large-scale wind farm

three types of DR

including interruptible load

direct load control

and load as capacity resource are selected to verify the proposed model. Four DR penetration rates are analyzed: 0%

10%

20% and 30%. The results indicate that DR penetration can decrease total operation costs. The lower price DR resource gets the priority to be committed. The DR and wind farm integration is indispensable in the future economic dispatch.