Regional comprehensive energy system containing carbon dioxide energy storage and operation method thereof

Abstract

The invention provides a regional comprehensive energy system containing carbon dioxide energy storage and an operation method thereof, and relates to the technical field of regional comprehensive energy system optimization. The system comprises a power bus, a heat load bus, a cold load bus, a trans-critical carbon dioxide energy storage subsystem, an energy input module, a combustion gas turbine,a gas boiler, a waste heat boiler, an electric refrigerator, an absorption refrigerator, a ground source heat pump and a heat energy storage device. The operation method comprises the steps of firstly judging whether renewable energy sources can meet the electrical load demand at the current moment; if yes, supplying power through the renewable energy sources, supplying heat through the gas boiler, the ground source heat pump, the waste heat boiler and the heat energy storage device, and cooling through the electric refrigerator and the absorption refrigerator; if not, selecting a power supply device; and finally determining the balance of supply and demand of the regional comprehensive energy system, and further determining the force output of each equipment in the system. According to the system and the operation method thereof provided by the invention, the whole system is tightly jointed, so that the operation efficiency of the system is improved.

Description

technical field [0001] The invention relates to the technical field of regional comprehensive energy system optimization, in particular to a regional comprehensive energy system containing carbon dioxide energy storage and an operating method thereof. Background technique [0002] Energy is the driving force of social development and the basis of human existence. Due to the increasing shortage of fossil fuels and the increasingly serious environmental pollution problems caused by them, people pay more and more attention to the development of energy-saving and emission-reduction technologies and the development and utilization of new energy. The energy Internet with the power system as the core is developed, and by coupling power, transportation, natural gas, heating and cooling systems to achieve complementary advantages and the sharing and efficient utilization of renewable energy in a wide area, it provides high-quality energy services. As an important part of the Energy ...

AI Technical Summary

Problems solved by technology

The conversion efficiency of a single energy system is low, and technical defects in production, transmission, storage, etc. will cause a lot of energy waste

The power generation system can only convert 30% to 40% of the fuel energy into electric energy, and the rest of the energy may be transferred to the heat source, but most of it is directly discharged and used, which is unreasonable; due to the fluctuation of the load, the unit runs most of the time. Under non-working conditions, constantly changing the output of the unit is not conducive to the long-term operation of the unit, and the introduction of energy storage technology will improve this problem

[0004] The development of traditional energy storage technology is not perfect and the cost is high. The excess power of the power system cannot be fully absorbed and has to be discarded. This series of problems has brought about great resource consumption and waste.

Images