阅读说明：本技术 高海拔地区密闭建筑群综合储能系统及其控制方法 (Comprehensive energy storage system for closed building group in high-altitude area and control method thereof ) 是由 张琨 王辉 王开强 刘业炳 陈波 刘卫军 刘志茂 黄大凡 叶智武 夏劲松 卢登 于 2021-09-26 设计创作，主要内容包括：本发明公开了一种高海拔地区密闭建筑群综合储能系统及其控制方法。本高海拔地区密闭建筑群综合储能系统包括压缩空气储能机构、电池储能机构以及储热储能机构,其中,压缩空气储能机构包括空气压缩机以及与其连接的储气罐,电池储能机构包括蓄电池组,储热储能机构包括与空气压缩机连接的余热回收装置以及与其连接的热水储罐,热水储罐与高海拔地区密闭建筑群的热水供应系统连接以对高海拔地区密闭建筑群提供生活热水,蓄电池组与高海拔地区密闭建筑群的用电设备电连接,储气罐与高海拔地区密闭建筑群的进气管道连接。本高海拔地区密闭建筑群综合储能系统可合理进行储能,解决了密闭建筑群储能和能源供给问题,具有转换效率高、可靠性好的优点。(The invention discloses a comprehensive energy storage system for a closed building group in a high-altitude area and a control method thereof. The comprehensive energy storage system for the high-altitude area closed building group comprises a compressed air energy storage mechanism, a battery energy storage mechanism and a heat storage energy storage mechanism, wherein the compressed air energy storage mechanism comprises an air compressor and an air storage tank connected with the air compressor, the battery energy storage mechanism comprises a storage battery pack, the heat storage energy storage mechanism comprises a waste heat recovery device connected with the air compressor and a hot water storage tank connected with the waste heat recovery device, the hot water storage tank is connected with a hot water supply system of the high-altitude area closed building group to provide domestic hot water for the high-altitude area closed building group, the storage battery pack is electrically connected with electric equipment of the high-altitude area closed building group, and the air storage tank is connected with an air inlet pipeline of the high-altitude area closed building group. The comprehensive energy storage system for the closed building group in the high-altitude area can reasonably store energy, solves the problems of energy storage and energy supply of the closed building group, and has the advantages of high conversion efficiency and good reliability.)

1. A comprehensive energy storage system for a closed building group in a high altitude area is characterized by comprising a compressed air energy storage mechanism, a battery energy storage mechanism and a heat storage energy storage mechanism, wherein,

the compressed air energy storage mechanism comprises an air compressor and an air storage tank connected with the air compressor, the battery energy storage mechanism comprises a storage battery, the heat storage energy storage mechanism comprises a waste heat recovery device connected with the air compressor and a hot water storage tank connected with the waste heat recovery device, the hot water storage tank is connected with a hot water supply system of the high-altitude area airtight building group to provide life hot water for the high-altitude area airtight building group, the storage battery is electrically connected with electric equipment of the high-altitude area airtight building group, and the air storage tank is connected with an air inlet pipeline of the high-altitude area airtight building group.

2. The high-altitude area enclosed building group integrated energy storage system according to claim 1, wherein the battery pack is a UPS battery pack.

3. The comprehensive energy storage system of the enclosed building group at the high altitude area as claimed in claim 1, wherein the waste heat recovery device is internally provided with a first heat exchange channel and a second heat exchange channel, the first heat exchange channel is connected with a cooling oil circulation pipeline on an air compressor, and the second heat exchange channel is connected with a hot water storage tank.

4. The high-altitude area enclosed building group integrated energy storage system of claim 1, wherein the air compressor and the storage battery are connected with a commercial power supply system and a renewable energy power generation system.

5. The high altitude area enclosed building complex energy storage system of claim 1, wherein said heat storage and energy storage means further comprises a solar collector connected to a hot water supply system of the high altitude area enclosed building complex.

6. The integrated energy storage system for the enclosed buildings at high altitude areas as claimed in claim 1, wherein a flow control valve is installed on the pipeline between the gas storage tank and the gas inlet of the enclosed buildings at high altitude areas, and the flow control valve can be manually controlled.

7. The high-altitude area enclosed building complex energy storage system of claim 1, wherein said waste heat recovery device comprises a finned heat exchanger.

8. The comprehensive energy storage system of the enclosed high-altitude area building complex of claim 6, wherein a pressure pump is installed between the heat storage and energy storage mechanism and the hot water supply system of the enclosed high-altitude area building complex.

9. The high-altitude area enclosed building complex energy storage system of claim 1, further comprising a controller electrically connected to said booster pump and flow control valve, the battery pack being electrically connected to the controller for supplying power thereto.

10. The control method of the comprehensive energy storage system of the enclosed building group in the high-altitude area based on any one of claims 1 to 9 is characterized by comprising the following steps:

when the electricity price is less than the preset electricity price or the electric quantity of the renewable energy power generation system is greater than the preset electric quantity, controlling the air compressor to work to store and control the air storage tank, recovering waste heat generated by the air compressor by waste heat recovery equipment, and charging the storage battery pack to store the electric quantity;

when the electricity price is greater than or equal to the preset electricity price or the electric quantity of the renewable energy power generation system is less than or equal to the preset electric quantity, the air storage tank is deflated to perform pressurization and oxygen supplementation to the closed building group in the high altitude area, and meanwhile, the storage battery pack discharges outwards to meet the control requirements of the live electrical appliances and the system in the closed building group in the high altitude area.

Technical Field

The invention relates to the technical field of energy storage systems in plateau areas, in particular to a comprehensive energy storage system for a closed building group in a high-altitude area and a control method thereof.

Background

Renewable energy sources such as solar energy and wind energy in plateau areas are rich, but the renewable energy sources have the problem of unbalance in use, and an energy storage device is required to be arranged for ensuring normal use; the main energy consumption of the closed building group is the acquisition of compressed air, and a large amount of energy is also consumed for heating in winter, so that the reasonable energy storage is the key for improving the economy of the closed building group.

Disclosure of Invention

The invention mainly aims to provide a comprehensive energy storage system for a closed building group in a high-altitude area, which aims to reasonably store energy so as to provide comprehensive utilization for the closed building group in the high-altitude area.

In order to achieve the above object, the present invention provides a comprehensive energy storage system for enclosed building groups in high altitude areas, comprising a compressed air energy storage mechanism, a battery energy storage mechanism and a heat storage energy storage mechanism, wherein,

the compressed air energy storage mechanism comprises an air compressor and an air storage tank connected with the air compressor, the battery energy storage mechanism comprises a storage battery, the heat storage energy storage mechanism comprises a waste heat recovery device connected with the air compressor and a hot water storage tank connected with the waste heat recovery device, the hot water storage tank is connected with a hot water supply system of the high-altitude area airtight building group to provide life hot water for the high-altitude area airtight building group, the storage battery is electrically connected with electric equipment of the high-altitude area airtight building group, and the air storage tank is connected with an air inlet pipeline of the high-altitude area airtight building group.

Preferably, the battery pack is a UPS battery pack.

Preferably, a first heat exchange channel and a second heat exchange channel are arranged in the waste heat recovery device, the first heat exchange channel is connected with a cooling oil circulation pipeline on the air compressor, and the second heat exchange channel is connected with the hot water storage tank.

Preferably, the air compressor and the storage battery pack are connected with a mains supply system and a renewable energy power generation system.

Preferably, the heat and energy storage mechanism further comprises a solar heat collector connected with a hot water supply system of the enclosed building group in the high-altitude area.

Preferably, a flow regulating valve is installed on a pipeline between the air storage tank and an air inlet of the closed building group in the high-altitude area, and the flow regulating valve can be manually controlled.

Preferably, the waste heat recovery device comprises a finned heat exchanger.

Preferably, a pressurizing pump is installed between the heat storage and energy storage mechanism and a hot water supply system of the closed building group in the high-altitude area.

Preferably, the comprehensive energy storage system for the enclosed building group in the high altitude area further comprises a controller electrically connected with the pressure pump and the flow regulating valve, and the storage battery pack is electrically connected with the controller to supply power to the controller.

Preferably, the outer parts of the air storage tank and the hot water storage tank and outlet pipelines thereof are wrapped with insulating layers.

The invention further provides a control method based on the comprehensive energy storage system of the closed building group in the high-altitude area, which comprises the following steps:

when the electricity price is less than the preset electricity price or the electric quantity of the renewable energy power generation system is greater than the preset electric quantity, controlling the air compressor to work to store and control the air storage tank, recovering waste heat generated by the air compressor by waste heat recovery equipment, and charging the storage battery pack to store the electric quantity;

when the electricity price is greater than or equal to the preset electricity price or the electric quantity of the renewable energy power generation system is less than or equal to the preset electric quantity, the air storage tank is deflated to perform pressurization and oxygen supplementation to the closed building group in the high altitude area, and meanwhile, the storage battery pack discharges outwards to meet the control requirements of the live electrical appliances and the system in the closed building group in the high altitude area.

According to the comprehensive energy storage system for the closed building group in the high-altitude area, provided by the invention, by utilizing the principle of a compressed air energy storage part, when the electricity price is low or the generated energy of renewable energy is large, air is compressed and stored by utilizing an air compressor, and when the external power is insufficient or the electricity price is peak, the compressed air is directly used for supplying air to the closed space, so that the efficiency is higher compared with the traditional compressed air energy storage. Meanwhile, the waste heat in air compression is recovered and used for heating in winter and domestic hot water, so that the problem of heating in winter is solved; the domestic electricity of the closed building group is mainly provided by the storage battery, so that the energy storage problem is better solved. The comprehensive energy storage system has the advantages of high conversion efficiency (compared with the method of compressing air by using surplus power during the load valley of a power grid, storing the air in a high-pressure sealing facility, and releasing the air at the peak of power utilization to drive a gas turbine to generate power, and the comprehensive energy storage system is high in conversion efficiency and good in reliability.

Drawings

Fig. 1 is a schematic structural principle diagram of the comprehensive energy storage system of the enclosed building group in the high-altitude area.

In the figure, 1-an air compressor, 2-an air storage tank, 3-a storage battery pack, 4-a waste heat recovery device, 5-a solar heat collector, 6-a flow regulating valve, 7-an air inlet of a closed building group in a high altitude area, 8-a pressure pump, 10-a mains supply system, 11-a renewable energy power generation system and 12-a hot water storage tank.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It should be noted that in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The invention provides a comprehensive energy storage system for a closed building group in a high-altitude area.

Referring to fig. 1, in the preferred embodiment, the comprehensive energy storage system for the enclosed building group in the high altitude area comprises a compressed air energy storage mechanism, a battery energy storage mechanism and a heat storage energy storage mechanism, wherein,

compressed air energy storage mechanism includes air compressor 1 and the gas holder 2 of being connected with it, battery energy storage mechanism includes storage battery 3, heat-retaining energy storage mechanism includes waste heat recovery device 4 of being connected with air compressor 1 and the hot water storage tank 12 of being connected with air compressor 1, hot water storage tank 12 is connected with the hot water supply system of the airtight building crowd in high altitude area in order to provide life hot water to the airtight building crowd in high altitude area, storage battery 3 is connected with the consumer electricity of the airtight building crowd in high altitude area (in order to satisfy resident's life and illumination demand in the airtight building crowd in high altitude area), gas holder 2 is connected with the admission line of the airtight building crowd in high altitude area (in order to carry out the pressure boost oxygen suppliment in the airtight building crowd in high altitude area).

The air compressor 1 may be a multi-stage compressor to quickly fill the air tank 2 with air. The compressed air energy storage mechanism mainly compresses air by using the surplus power in the load valley of the power grid and stores the air in the air storage tank 2, and the air storage tank 2 slowly releases the air to carry out pressurization and oxygen supply in the enclosed building group in the high altitude area in the power utilization peak, so that the air blower does not need to work continuously to carry out pressurization and oxygen supplement on the enclosed building group in the high altitude area.

The design pressure and the volume of the air storage tank 2 are determined according to field use conditions, and the amount of compressed air in the air storage tank 2 converted into the air under the standard atmospheric pressure can meet the ventilation and air exchange requirements of a closed building group when the external power is insufficient in one period. In general, the volume of the air tank 2 should be more than 20m³。

Further, the storage battery 3 is a UPS storage battery, so as to provide an uninterruptible power supply for the enclosed building group in the high altitude area.

Specifically, a first heat exchange channel and a second heat exchange channel are arranged inside the waste heat recovery device 4, the first heat exchange channel is connected with a cooling oil circulation pipeline on the air compressor 1, and the second heat exchange channel is connected with the hot water storage tank 12. The waste heat recovery device 4 comprises a finned heat exchanger. The fin type heat exchanger can be provided with a plurality of groups.

In this embodiment, the air compressor 1 and the storage battery 3 are both connected to the commercial power supply system 10 and the renewable energy power generation system 11. Renewable energy power generation system 11 includes, but is not limited to, a wind power generation system and a solar power generation system.

Further, the heat storage and energy storage mechanism further comprises a solar heat collector 5 connected with a hot water supply system of the closed building group in the high-altitude area, and timely, stable and continuous supply of hot water is further guaranteed by arranging the solar heat collector 5.

Furthermore, a flow regulating valve 6 is installed on a pipeline between the gas storage tank 2 and a gas inlet 7 of the high-altitude area closed building group, and the flow regulating valve 6 can be manually controlled, so that manual control during power failure is facilitated.

In this embodiment, a pressure pump 8 is installed between the heat storage and energy storage mechanism and the hot water supply system of the enclosed building group in the high altitude area.

The comprehensive energy storage system for the high-altitude area closed building group further comprises a controller 13 electrically connected with the pressure pump 8 and the flow regulating valve 6, so that automatic control is convenient to realize. The battery pack 3 is electrically connected to the controller 13 to supply power thereto. Since the circuit configuration in which the controller 13 is connected to the pressure pump 8, the control valve 9, and the flow rate adjustment valve 6 is a common technique, the description of the circuit is omitted in the present invention.

In addition, the outside of the air storage tank 2 and the hot water storage tank 12 and the outlet pipeline thereof are wrapped with heat insulation layers, thereby reducing the energy consumption of the system.

The working process of the comprehensive energy storage system for the closed building group in the high-altitude area is as follows.

When the electricity price is low or the power generation amount of the self-contained power generation equipment such as solar power generation and wind power generation is large, the air compressor 1 is started, compressed air is stored through the air storage tank 2, meanwhile, waste heat generated by the air compressor 1 is recovered by the waste heat recovery equipment, domestic water and heating water can be used in the hot water storage tank 12, and the waste heat water is stored, and meanwhile, the storage battery pack 3 is charged to store electric quantity.

When the electricity price is high or the external power is insufficient, the compressed air in the air storage tank 2 is utilized to meet the ventilation and air exchange requirements of the closed building group, the hot water stored in the hot water storage tank 12 meets the requirements of heating and domestic hot water in the cabin, and the storage battery pack 3 discharges electricity to the outside to meet the requirements of domestic electricity utilization in the closed building group.

The energy storage system is synthesized to airtight building crowd in high altitude area that this embodiment provided utilizes compressed air energy storage partial principle, when the low ebb of electricity price or renewable energy generated energy is great, utilizes air compressor 1 compressed air and stores, and during external electric power is not enough or electricity price peak value, compressed air directly is used for airtight space air feed, compares traditional compressed air energy storage, and efficiency is higher. Meanwhile, the waste heat in air compression is recovered and used for heating in winter and domestic hot water, so that the problem of heating in winter is solved; the domestic electricity of the closed building group is mainly provided by the storage battery, so that the energy storage problem is better solved. The comprehensive energy storage system has the advantages of high conversion efficiency (compared with the method of compressing air by using surplus power during the load valley of a power grid, storing the air in a high-pressure sealing facility, and releasing the air at the peak of power utilization to drive a gas turbine to generate power, and the comprehensive energy storage system is high in conversion efficiency and good in reliability.

The invention further provides a control method of the comprehensive energy storage system of the closed building group in the high-altitude area.

In this preferred embodiment, a control method based on the above comprehensive energy storage system for enclosed building groups in high-altitude areas includes the following steps:

when the electricity price is less than the preset electricity price or the electric quantity of the renewable energy power generation system is greater than the preset electric quantity, controlling the air compressor to work to store and control the air storage tank, recovering waste heat generated by the air compressor by waste heat recovery equipment, and charging the storage battery pack to store the electric quantity;

when the electricity price is greater than or equal to the preset electricity price or the electric quantity of the renewable energy power generation system is less than or equal to the preset electric quantity, the air storage tank is deflated to perform pressurization and oxygen supplementation to the closed building group in the high altitude area, and meanwhile, the storage battery pack discharges outwards to meet the control requirements of the live electrical appliances and the system in the closed building group in the high altitude area.

The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or any other related technical fields, are intended to be covered by the scope of the present invention.