Research on optimization operation strategy of building-type distributed energy system based on Ebsilon

摘要

Due to the close coupling between subsystems and complex energy flow, the distributed energy system is different from the traditional power grid in terms of optimal operation. Therefore, it is necessary to study the optimal operation strategy of distributed energy system. Optimization operation Strategy of a distributed energy station in Guangzhou, China was investigated. Ebsilon software was used to model and simulate the main components and auxiliary machines of distributed energy stations. The opening number and specific load of each main equipment in the distributed energy system were investigated under the cooling load demand of 1000~128000kW. According to the optimal operation scheme under different cooling load demand, the revenue of the energy station with peak-flat-valley electricity price were discussed. The results show that there is largest income while the chillers are operated in the generator supply mode and flat electricity price mode under high cooling load range; In the case of moderate cooling load demand, it is profitable to operate gas engine couple with lithium bromide chiller series centrifugal chiller, but it always causes a waste of energy because the supply of frozen water exceeds the demand; It is feasible to buying electricity to supply chiller for refrigeration operation under low cooling load range. This study provides an important reference for mastering the optimization operation strategy of distributed energy system with complex energy flow.