Evaluation criteria-based operation method of integrated energy system

Abstract

The invention discloses an evaluation criteria-based operation method of an integrated energy system. According to the method, a branch supply system model is built; the electricity purchasing quantity and fuel consumption amount of the branch supply system are calculated; an integrated energy system model with two modes of fixing heat based on power and fixing power based on heat is built; the electricity purchasing quantity and fuel consumption amount of the integrated energy system are calculated; three evaluation indexes of the system, namely, primary energy consumption, operation cost andCO2 emission reduction amount are established; a comprehensive evaluation index is built on the basis of the comprehensive three indexes; the applicable conditions of two main operation modes of a combined cooling, heating and power system are calculated, so that the operation mode of the integrated energy system can be determined; the utilization rate of the system energy of the integrated energy system is made to be optimal; and therefore, the operation mode of the system is more economical and energy-saving in comparison with the operation modes of fixing heat based on power and fixing power based on heat. With the evaluation criteria-based operation method of the invention adopted, the problem of resource waste due to the randomness of load and the inconsistence of the partial load characteristics of a unit is solved.

Description

technical field [0001] The invention belongs to the field of combined cooling, heating and power supply systems, and specifically relates to an evaluation criterion-based comprehensive energy system operation method. Background technique [0002] Integrated energy systems (IES) have the characteristics of modularization and decentralization, and are efficient and reliable energy conversion units arranged around the user side. The power supply mainly includes internal combustion engines, micro gas turbines, photovoltaic power generation, wind power generation and Material energy power generation, etc., can realize the nearby power generation, nearby grid connection, nearby conversion, and nearby use of dispersed energy, effectively improving the comprehensive utilization of energy. The development of the integrated energy system has broken through the traditional energy system architecture, and has become an important link linking various forms of energy production to end-use...

AI Technical Summary

Problems solved by technology

For the combined cooling, heating and power system, when the heat-to-power ratio of the load demand and the heat-to-power ratio of the generator set are the same, the energy utilization rate is optimal, but due to the randomness of the load and the part-load characteristics of the unit, the two are often inconsistent. When using A certain mode of operation often results in waste of resources

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