Currently

microgrid arouses widespread concern as an excellent renewable energy integration pattern at home and abroad

and how to further improve microgrid renewable energy consumptive proportion becomes a hot issue of industry and academia. Therefore

a heat pump apparatus is introduced to consume redundant wind power and bear part of the heat load in combined heat and power (CHP) microgrid. Considering electric characteristics of the heat pump unit

the life loss costs of charging and discharging of energy storage device

abandoned wind power costs

CHP units boot costs and fuel costs

etc.

this paper establishes a short-term economic scheduling model of CHP microgird with the objective function of minimizing operating costs within the scheduling period. A multi-mutation particle swarm optimization algorithm is used to solve the model. A numerical example shows that application of the heat pump unit can reduce the abandoning wind power in the microgrid and reduce repeated charging and discharging of the energy storage device

but can save the fuel consumption and provide a reference for CHP microgird short-term scheduling. This work is supported by National Natural Science Foundation of China (No. 51307185)

Fundamental Research Funds for the Central Universities (No. CDJPY12150002)

Ph.D. Programs Foundation of Ministry of Education of China (No. 20120191120009)

and Chongqing Natural Science Foundation (No. CSTC2012JJA90004).