Micro-energy net system and micro-energy net configuration method and apparatus

Abstract

Embodiments of the invention provide a micro-energy net system and a micro-energy net configuration method and apparatus. The system comprises a solar energy heat collection device, a combined heat and power generation unit and a biogas device; the solar energy heat collection device heats biogas slurry in the biogas device through a heat supply circulation pipeline to generate biogas; the biogasin the biogas device is input to the combined heat and power generation unit through a gas guide pipe for enabling the combined heat and power generation unit to generate power; and residual heat generated by power generation of the combined heat and power generation unit heats the biogas slurry in the biogas device through a residual heat recycling pipeline. A storage battery, and the like powerstorage apparatuses are not needed, so that the energy storage cost is reduced; solar energy and the biogas are taken as energy sources; different energy source forms are mutually coupled in differentphysical connection modes to realize multi-energy source complementation; load demands in multiple forms of power, heat, gas and the like are provided for users; and a complementary characteristic ofthe solar energy and the biogas improves the flexibility of micro-energy net operation to a certain extent and reduces the energy utilization cost of the users.

Description

technical field [0001] The present invention relates to the field of clean energy technology, in particular to a micro-energy grid system, a micro-energy grid configuration method and a device. Background technique [0002] my country has a vast area of ​​mountainous areas, and islands are widely distributed, accounting for more than one-third of my country's land area. These areas are usually located in geographical locations where traffic is blocked. The cost of laying power grids and natural gas networks is too high, making remote mountainous areas or island areas still in a shortage of energy supply. dilemma. Independent hybrid energy systems or microgrids, such as comprehensive utilization of clean energy solar-wind energy, solar-tidal energy are effective means to alleviate the problem of energy supply shortage. But its flaws are: [0003] 1. The cost of energy storage is high. Most of these independently operating hybrid energy systems use batteries as energy storag...

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Problems solved by technology

[0003] 1. High cost of energy storage

Most of these independently operating hybrid energy systems use batteries as energy storage links, and suppress the fluctuations of photovoltaic and wind power output through rapid charging and discharging of batteries. and maintenance costs are relatively high, thus affecting its large-scale promotion and application to relatively remote and traffic-blocked areas such as mountains or islands

[0004] 2. Single form of energy supply

Independently operating hybrid energy systems and microgrids have a single energy supply form, and cannot provide users with various forms of energy demand such as cooling, heating, electricity, and gas at the same time, and the comprehensive energy utilization rate is low.

[0005] 3. The scale is too large, the scope of application is small, the flexibility is poor, and the cost is high

[0006] Due to the different characteristics of energy such as electric energy and thermal energy and the characteristics of transmission and conversion, the optimal configuration method of independent hybrid energy system or microgrid cannot be promoted.

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