Energy Consumption Characteristicsresearch Of Energy Micro Grid System Combined Cooling, Heating And Power

Energy strategy relates to national economy, which is the construction of "resource saving and environment friendly society's important guarantee, and that has become a national leading position in the new economy of the important pillars. In recent years, the national policy on environmental protection and energy problems continuously put forward new requirements and regulations. So all kinds of energy saving and efficient power system technology development, especially the distributed energy power station has been paid more and more attention. Compared with centralized energy supply mode, natural gas energy micro grid system combined cooling, heating, heating and power (CCHP) has the advantages such as energy saving, environmental protection, security, good, is the beneficial supplement of the existing power system. The coexistence of centralized and distributed energy is industry trend. The thirteen five planning also proposes to develop micro grid system combined cooling, heating, heating and power.In this paper, on the basis of analyzing the computing load characteristics of the user, thermal characteristics of the equipment in CCHP system has been researched. Based on the multi-level comprehensive evaluation system, combined with the typical user stories, the use of the CCHP system can be calculated and studyed. This paper covers the load analysis, evaluation, configuration and operation research, and other aspects. The main research contents finished in this paper are as follows."(1) The load characteristics of the typical architecture are researched and the load forecasting mathematical model has been established. Grasp the typical functional building load demand characteristics of cold and hot electricity is the precondition of CCHP system, through the load characteristics of the typical user to get a more general, more general conclusion.(2) Studying the characteristics of CCHP system equipment. Mainly includes the prime mover (internal combustion engine, gas turbine, micro gas turbine), waste heat boiler, lithium bromide chiller, energy storage devices, ice storage device and equipment, such as electric heat boiler equipment parameters, performance curve, price maintenance, etc.; Internal combustion engines and gas turbine CCHP system application of various differences; And the basic principles of selection of CCHP system.(3) Investigate the CCHP system evaluation system. To deal with multiple criteria decision making (MCDM) problems, analytic hierarchy process (AHP) is studied, the complex evaluation level of split into several different subsystems, including the object of study, evaluation criteria and alternatives, etc., all kinds of evaluation standard is expressed as multi-level structure. Finally get to meet the needs of users, scientific and effective comprehensive evaluation calculation system.(4) CCHP system configuration and operation of calculation examples. Established the CCHP "big system", gives the mathematical model of the energy flow and operation instruction strategy. In two classes of CCHP system, two examples were calculated, one kind is including heat storage tank of the CCHP system configuration and operation, this part makes full use of the heat storage technology, a hospital practical computing cases are given. The other kind is ice storage and cold storage of thermoelectric boiler CCHP system configuration and operation, the part uses off-peak storage and heat storage technology, gives a large office building practical computing cases.