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Multisource region type cold, heat and electricity combined supply energy network system and method

A combined cooling, heating and power supply and source area technology, applied in the energy field, can solve problems such as low energy utilization, no integrated design, and large gaps in working conditions, and achieve the goal of reducing installed capacity and quantity, reducing difficulty, and ensuring normal supply Effect

Active Publication Date: 2012-12-19
湖南康拜恩分布式能源科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 1. Insufficient consideration is given to the dynamics and asynchronous matching of building cooling, heating, and electrical loads, as well as the variable operating conditions of the system. The adverse effects on the operation stability of the power supply system lead to a large gap between the design working conditions and the actual operating conditions, and the actual energy utilization rate is low
[0009] 2. Coordination with other energy supply systems is not considered, such as the coordinated operation with large power grids and other distributed power generation systems
As a result, complex conflicts and contradictions in energy supply between the combined cooling, heating and power system and other energy supply systems make it difficult to achieve complementary and coordinated operation between the combined cooling, heating and power systems and other energy supply systems
[0010] 3. Interconnection and grid connection of combined cooling, heating and power supply systems
The existing combined cooling, heating and power system schemes do not integrate interconnection and grid-connected operation issues into the system integration scheme, and the existing microgrid and heating network are researched and applied in isolation. , micro-grid, heating network, and other types of distributed power generation systems in the region without integrated design
[0011] 4. Failure to consider the problems in the external energy supply of the system, such as complementary and backup schemes for the normal supply of cooling, heating and electricity when there is a local failure in the gas supply and the system

Method used

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  • Multisource region type cold, heat and electricity combined supply energy network system and method
  • Multisource region type cold, heat and electricity combined supply energy network system and method
  • Multisource region type cold, heat and electricity combined supply energy network system and method

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Embodiment approach

[0035] Summer implementation: as in figure 1 In the regional combined cooling, heating and power energy station, the fuel first enters the combustion chamber of the gas turbine for combustion, and the generated high-temperature and high-pressure gas enters the turbine to do work to drive the generator to generate electricity. Enter the high-temperature sub-cylinder through the high-temperature collecting cylinder, open valve 2, drive the steam turbine to generate electricity, and the medium-temperature steam after driving the steam turbine enters the medium-temperature sub-cylinder through the medium-temperature collecting cylinder to supply steam to the annular heating network, such as figure 2 The steam is converted into high-temperature hot water through the high-temperature steam-water heat exchanger of the CCHP branch system of the building complex, and the valve 13 is opened to drive the double-effect hot-water lithium bromide refrigerator for cooling. The surplus high-t...

Embodiment approach 2

[0037] Winter implementation mode: during winter operation, such as figure 1 After driving the steam turbine, the medium-temperature steam passes through the medium-temperature collecting cylinder and the medium-temperature distributing cylinder to the Figure 5 Ring heating network supply steam, such as figure 2 Open the valve 10 to convert the steam into medium-temperature hot water for heating through the medium-temperature steam-water heat exchanger. When the heat load is low, open the valve 12 and store it in the heat storage device. Provide heating for medium-temperature hot water, and when winter enters the low power consumption at night, such as figure 1 The gas turbine, steam turbine, and high-temperature waste heat boiler are shut down, and the valve 4 is opened, and the regenerative electric boiler is powered by the large power grid while storing heat and supplying heat. winter as figure 2 Domestic hot water is mainly provided by heat recovery hot water and sol...

Embodiment approach 3

[0039] Implementation method of transitional season: transitional season refers to spring and autumn. The transitional season mainly focuses on power generation and provides domestic hot water. Transition season runs as figure 1 Open valve 1 to make high-temperature steam re-inject into the combustion chamber of the gas turbine to increase the work done by the turbine. Open the valve 2 to drive the steam turbine to generate electricity, and the grid-connected electricity will be dispatched by the large power grid. transitional seasons such as figure 2 Domestic hot water is mainly provided by solar thermal water heaters and medium-temperature steam-water heat exchangers. Open valves 10 and 16 and close valve 11. When the domestic hot water load is low, it will flow into the hot water insulation pool through valve 19. When the domestic hot water load is at a peak Close valve 19 when closing, open valve 20,21 and provide domestic hot water, cloudy day, rainy day open valve 12,...

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Abstract

The invention relates to the technical field of energy, and in particular relates to a multisource region type cold, heat and electricity combined supply energy network system and method. The system is composed of three parts: a region type cold, heat and electricity combined supply energy station system, an architectural complex cold, heat and electricity combined supply branch system and a multisource energy network system, which are integrated to be an unitized combined supply energy network system, wherein the multisource energy network system is composed of a multisource chain type micro net and a multisource annular heat net; and the energy station can carry out lateral load complementation with an adjacent energy station, and can also carry out longitudinal load regulation and control with the combined supply branch system, so as to realize dynamic complementation and match of cold, heat and electricity load. The system lays stress on sufficient utilization of energy steps and complementary utilization with other energy systems, and simultaneously fully considers the complementation alternative scheme in particular cases; and compared with the traditional system, the system has the advantages that the energy utilization rate, stability and reliability of the system are greatly improved.

Description

technical field [0001] The invention relates to the field of energy technology, in particular to a multi-source regional combined cooling, heating and power energy grid system and method Background technique [0002] The combined cooling, heating and power system is an advanced technology for efficient utilization of clean energy. It is a distributed system that integrates heating (heating and hot water supply), refrigeration and power generation based on the concept of energy ladder utilization. Comprehensive energy utilization system. On the premise of improving the quality of people's work and life, energy saving is a key technology for low-carbon urban energy construction. Therefore, it is widely valued in the world. [0003] At present, there are three types of research and application of combined cooling, heating and power systems: [0004] 1. Building type - directly supply cooling, heating (including hot water) and power to buildings or small-scale buildings, and ...

Claims

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Application Information

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IPC IPC(8): F25B29/00F02C6/00H02J3/38
Inventor 陈戈王进
Owner 湖南康拜恩分布式能源科技有限公司
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