Double-bus direct current ultra-micro grid system suitable for sustainable building

Abstract

The invention provides a double-bus direct current ultra-micro grid system suitable for a sustainable building according to the characteristics of Chinese buildings. A ultra-micro grid adopts a 380V and 48V double-bus structure to combine new energy source power generation, energy storage, combined heat and power generation, loads and control systems to form an intelligent micro grid, and the intelligent micro grid can work in the island and grid-connecting working modes; high voltage (380V) is used for driving a household high-power electric appliance, and low voltage (48V) is connected with miniature electronic equipment; an energy storage system adopts a supercapacitor and an electric automobile battery hybrid energy storage structure, and a house heat energy system is combined with an electric energy system by a combined heat and power generation system, a hot water tank and an electric heater, so as to realize the comprehensive management of energy. The double-bus direct current ultra-micro grid system has the advantages that by utilizing reasonable design and coordinated control, the quality of electric energy of the sustainable building can be improved; by combining the heat and power systems, the utilization efficiency of the energy source is improved; the distributed type new energy can be effectively utilized, and the functions of energy saving and emission reduction are realized.

Description

technical field [0001] The invention relates to a power supply system in which a direct current extremely micro-grid system of a power system is combined with a cogeneration system of heat and power. In particular, it refers to a DC micro-grid power supply system with high energy utilization rate that contains a double busbar structure for sustainable buildings, and combines the house electrical energy system with the thermal energy system. Background technique [0002] With the rapid development of economy, energy crisis and environmental pollution have become serious problems facing the world today. Sustainable buildings can achieve "zero energy consumption" in buildings, use new energy to generate electricity, reduce the consumption of limited fossil fuels, reduce air pollution, achieve energy conservation and emission reduction, and sustainable urban development. It is a residential type that will be vigorously developed in future cities. [0003] At present, the known ...

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Problems solved by technology

[0006] In order to realize high-efficiency utilization of distributed energy, solve the problem of "zero energy consumption" in sustainable buildings, and provide users with convenient and economical power energy, the present invention proposes a DC extremely micro-grid system that conforms to the characteristics of modern buildings

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