Distributed energy system has the advantages of high efficiency

reliability

economy and environmental protection

and can simultaneously meet the needs of users for cold

heat and electricity. Because of the complex coupling of energy flow in the system

it is difficult to site selection and pipe network planning during design. In order to solve this problem

the method of alternating iteration of venot diagram and comprehensive energy load moment is used to determine the site selection and power supply area of the power station. Considering the operation characteristics of all kinds of energy equipment in the station

based on the two basic operation strategies of “heat determined by electricity”(FEL) and “power determined by heat”(FTL)

the capacity optimization of energy system equipment in the station was studied to obtain the optimal operation mode of the system. From the perspective of multi-power station coordination

a regional power-heat interconnection pipeline transmission model is established to solve the problem of inter-station energy scheduling and management. Eight typical scenarios of a near-zero energy consumption community in Beijing were analyzed. The annual total cost reduced by 344 000 yuan and the economic benefit increased by 3.9%

which verified the effectiveness of the scheme.