As the energy market is being deregulated

the energy price

as a controllable resource

is expected to promote the optimized operation of multi-energy(such as electricity

gas

heat/cool)in the district energy centre(DEC). Based on the energy hub modelling method

the general linear modelling method of power balance equation in DEC is presented. In addition

after taking into account the price elasticity of energy load demand

piecewise linearization modeling of energy load demand is conducted

and the description of piecewise linear function is unified by introducing a 0-1 logic variable and several linear constraints. Further

aiming at DEC net revenue maximization

the mixed integral quadratic programming model for optimal day-ahead dispatch of DEC is developed

in which the controllability of energy price is taken into consideration

and CPLEX called from GAMS is used for solution. Finally

with a case study on microgrid-type DEC

the proposed modeling method is verified

and the influences of control of energy price

different price elasticity and prediction error of new energy on the dispatch results are analyzed. The results show that full use of load price elasticity will help reduce load variance and peak-valley difference

and deep the optimization potential of DEC

while maximize the DEC revenue.