The utility model provides a little grid system of multipotency interconnection hybrid AC/DC belongs to little electric wire netting network deployment and optimal configuration field, the utility model discloses mainly be that isolated network operation gives first place to, adopt the method of cooling heating and power triple co -generation's multipotency interconnection to make the energy obtain abundant utilization in whole lonely net, reduced a plurality of little sources incorporate into and to the impact of big electric wire netting for the more reasonable utilization of energy, switching problem in order to solve the alternating current -direct current has found the hybrid AC/DC microgrid, can satisfy direct -current load simultaneously and exchange the load to reduced because of the system electric energy loss that the conversion caused many times.