In order to promote the user's flexible load resources to participate in the demand response effectively

load aggregators can be employed to arrange load resources to participate in the grid dispatch. By dividing the user's loads into several categories

a hierarchical dispatch model is proposed that consists of the power grid company

load aggregators

and residential users. In day-ahead bidding

the game model is formulated based on maximizing load aggregators' profit

load aggregators' bidding behavior is analyzed with non-cooperative game

and the existence of Nash equilibrium is also given mathematically. In the real-time scheduling

for promoting load aggregators' profit without affecting users' comfortableness

the minimum error between real-time scheduling and bidding results is taken as a goal to schedule users' loads with constraints on three kinds of loads in physical characteristics. A case study validates the effectiveness of the proposed hierarchical dispatch model on demand response of flexible load. And simulation results show that the power network company

load aggregators

and residential users can all benefit simultaneously.