In view of integrated energy microgrid as the important component of Energy Internet

this paper develops an optimal configuration model of a multi-energy storage system in a standalone integrated energy microgrid. The configuration methods of rated power and capacity of the electricity storage system and the heat storage system are proposed. In the electricity storage system model

the estimation of battery life during the heating and non-heating periods is taken into account. The goal of the proposed model is to obtain the best economic benefit. The thermoelectric coupling constraints of combined heat and power(CHP)units is considered

including heat and electric power balance constraint

ramp rate constraint of units

energy storage system constraints and the probability of self-sufficiency

etc. The model is solved by the bacterial colony chemotaxis(BCC)algorithm based on the unit output and the power allocation strategy of the energy storage system. The operation characteristics of the CHP units containing energy storage systems are also discussed. Finally

the results show that the proposed configuration method of multi-energy storage system has significant economic and environmental benefits during the heating and non-heating periods and promotes the wind power consumption.