A multi-energy complementary distributed energy system and its regulation method

Abstract

The invention relates to a multi-energy complementary distributed energy system and its control method. The system flexibly matches the cold and heat demand on the user side with the cooling / heat supply of the system through an energy management module, a waste heat utilization device and a waste heat conversion device, and avoids frequent mobilization of gas At the same time, it also avoids the waste of high-temperature flue gas, cooling capacity and heat supply. The waste heat conversion device breaks through the limitation of the traditional short energy storage time, and converts waste heat into fuel for storage, and the storage time is not limited; the multi-energy complementary distributed energy system of the present invention also includes a renewable energy conversion device, which can not only As a power generation supplement for gas-fired generator sets, it can also be used to convert liquid fuel into gaseous fuel, supplement the gaseous fuel in the gaseous fuel storage device, and meet the use requirements of gas-fired gas-fired generator sets. When renewable energy is sufficient, priority should be given to using renewable energy for conversion into gaseous fuel.

Description

technical field [0001] The invention relates to the field of distributed energy technology, in particular to a multi-energy complementary distributed energy system and a control method thereof. Background technique [0002] The multi-energy complementary distributed energy system is a kind of setting close to the user, which realizes the input of various energy resources, uses waste heat in cascades and outputs various energy products such as electricity, cold, and heat to the user nearby, and can realize energy saving, emission reduction and high-proportion renewable energy. A new energy system for energy consumption. [0003] Renewable energy in the existing multi-energy complementary distributed energy, such as wind energy, solar energy, etc., generally directly converts wind energy or solar energy into electrical energy and then stores it. This kind of electrical energy storage is expensive, risky, and energy conversion rate is low. . In addition, due to the dynamic fl...

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Problems solved by technology

[0003] Renewable energy in the existing multi-energy complementary distributed energy, such as wind energy, solar energy, etc., generally directly converts wind energy or solar energy into electrical energy and then stores it. This kind of electrical energy storage is expensive, risky, and energy conversion rate is low.

In addition, due to the dynamic fluctuation, complexity, and nonlinearity of the demand for cooling, heating, and electricity loads on the user side, the system is faced with problems such as a sharp drop in performance under variable operating conditions. How to achieve efficient complementarity and cascaded utilization of multiple energy sources under complex operating conditions is a key issue The main problems faced by multi-energy complementary distributed energy systems

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