Energy storage peak load device

Abstract

The present invention relates to the technical field of thermal airflow power generation equipment, and provides an energy storage peak-shaving device to solve the defects of high energy storage cost and low efficiency of the power grid in the prior art, including a power generation mechanism; a heat collection mechanism, the heat collection mechanism includes a heat storage component and a thermal airflow power generation component, the power generation mechanism is connected to the heat storage component, the heat storage component is used to transport the thermal airflow to the thermal airflow power generation component, the thermal airflow power generation component is used to connect to the input end of the power grid, and the heat storage component is used to connect to the output end of the power grid. The present invention provides electric energy to the thermal storage component through the power generation mechanism to heat the airflow and store the electric energy to form a thermal airflow, the thermal airflow power generation component uses the thermal airflow to generate electricity, and transmits the electric energy to the power grid to meet the peak power demand, and in the power trough stage, the power grid can directly supply power to the thermal storage component to realize power storage and energy storage, and then realize energy storage peak-shaving, ensure the reliability of power supply and operational stability, reduce costs, realize energy storage peak-shaving of electricity, and improve energy storage efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal airflow power generation equipment, and in particular to an energy storage peak regulation device. Background Art

[0002] With the global energy supply tension, global climate change and environmental pollution, more and more countries have realized the importance of new energy and are vigorously developing new energy power generation, especially wind power generation and photovoltaic power generation.

[0003] The energy storage system can smooth out the valleys and fill the peaks, thus ensuring the reliability of the power supply system and the stability of its operation, ensuring good voltage quality, and also solving the problem of large investments in transmission lines required due to peak loads.

[0004] At present, the energy storage methods of the power grid mainly include pumped storage, compressed air storage, battery storage, etc. Among them, pumped storage is limited by natural conditions such as geographical location, and has a relatively long construction period, and high investment and operating costs; compressed air storage requires large-scale gas storage devices, certain geological conditions, and low efficiency; battery storage has high investment costs, battery loss and short life. Summary of the invention

[0005] The present invention provides an energy storage peak-shaving device to solve the defects of high energy storage cost and low efficiency of the power grid in the prior art, thereby ensuring the reliability of power supply and operational stability, reducing costs, realizing energy storage peak-shaving of electricity, and improving energy storage efficiency.

[0006] The present invention provides an energy storage peak-shaving device, comprising:

[0007] Power generation organizations;

[0008] A heat collecting mechanism, the heat collecting mechanism includes a heat storage component and a hot air flow power generation component, the power generation mechanism is connected to the heat storage component, the heat storage component is used to transport hot air flow to the hot air flow power generation component, the hot air flow power generation component is used to be connected to the input end of the power grid, and the heat storage component is used to be connected to the output end of the power grid.

[0009] According to an energy storage peak-shaving device provided by the present invention, the heat storage component comprises a heat collection shed, a heat storage layer and a heating component, the heat collection shed comprises a heat storage area and a gas storage area, the heat storage layer is arranged in the heat storage area and is used to heat the air in the gas storage area;

[0010] The heating components are respectively connected to the power generation mechanism and the power grid, and are arranged in the heat storage area to heat the heat storage layer. The gas storage area is connected to the hot air flow power generation component.

[0011] According to an energy storage peak-shaving device provided by the present invention, the heating component includes a first heating element and a second heating element, the first heating element is connected to the power generation mechanism, and the second heating element is connected to the power grid.

[0012] According to an energy storage peak-shaving device provided by the present invention, a heat insulation layer is provided on the bottom side and the outer peripheral side of the heat storage layer.

[0013] According to an energy storage peak-shaving device provided by the present invention, the heat collection shed is provided with an insulated air inlet, the insulated air inlet is connected to the air storage area, and the insulated air inlet is provided with a first switch.

[0014] According to an energy storage and peak-shaving device provided by the present invention, the hot air flow power generation component includes a hot air flow pipeline and a hot air flow generator, the hot air flow pipeline is connected to the gas storage area, the hot air flow generator is arranged in the hot air flow pipeline, and the hot air flow generator is connected to the power grid.

[0015] According to an energy storage peak-shaving device provided by the present invention, the hot air flow pipeline is provided with an air inlet end connected to the air storage area, and a second switch is provided at the air inlet end.

[0016] According to an energy storage peak-shaving device provided by the present invention, a heat-insulating glass is provided on the top side of the heat collection shed to allow sunlight to irradiate the gas storage area for heating.

[0017] According to an energy storage peak-shaving device provided by the present invention, the power generation mechanism includes a photovoltaic power generation unit and a wind power generation unit, and the photovoltaic power generation unit and the wind power generation unit are both connected to the heat storage component.

[0018] According to the present invention, an energy storage peak-shaving device also includes a controller, wherein an input end of the controller is electrically connected to the power grid to receive a power abandonment signal, and an output end of the controller is electrically connected to the power generation mechanism to send a control signal.

[0019] The energy storage peak-shaving device provided by the present invention comprises a power generation mechanism; a heat collection mechanism, wherein the heat collection mechanism comprises a heat storage component and a hot air flow power generation component, the power generation mechanism is connected to the heat storage component, the heat storage component is used to transport a hot air flow to the hot air flow power generation component, the hot air flow power generation component is used to be connected to the input end of a power grid, and the heat storage component is used to be connected to the output end of the power grid, the power generation mechanism provides electric energy to the heat storage component to heat the air flow and store the electric energy to form a hot air flow, the hot air flow power generation component uses the hot air flow to generate electricity, and transmits the electric energy to the power grid to meet the peak power demand, and in the power trough stage, the power grid can directly supply power to the heat storage component to realize power storage and energy storage, thereby realizing energy storage peak-shaving, ensuring the reliability of power supply and operational stability, reducing costs, realizing energy storage peak-shaving, and improving energy storage efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of the energy storage peak-shaving device provided by the present invention;

[0022] Reference numerals:

[0023] 100, photovoltaic power generation unit; 200, wind power generation unit; 300, heat collection shed; 310, heat storage layer; 311, insulation layer; 320, first heating element; 330, second heating element; 340, gas storage area; 341, first switch; 350, thermal air flow pipeline; 351, second switch; 360, thermal air flow generator; 370, insulation glass; 400, power grid; 500, controller. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Combine the following Figure 1 The present invention is described as an energy storage peak shaving device, comprising:

[0026] Power generation organizations;

[0027] The heat collection mechanism includes a heat storage component and a hot air flow power generation component. The power generation mechanism is connected to the heat storage component. The heat storage component is used to transport hot air to the hot air flow power generation component. The hot air flow power generation component is used to connect to the input end of the power grid 400, and the heat storage component is used to connect to the output end of the power grid 400. It can be understood that the power generation mechanism uses new energy to generate electricity, reduce environmental pollution, and reduce the cost of power generation. The heat collection mechanism includes a heat storage component and a hot air flow power generation component, wherein the power generation mechanism is connected to the heat storage component to realize the conversion of electrical energy into thermal energy and store it in the heat storage component. The thermal energy heats the air to form a hot air flow. The hot air flow generator 360 is connected to the heat storage component to generate electricity using the hot air flow transported by the heat storage component. The hot air flow generator 360 is connected to the power grid 400 in parallel to realize the transmission of the electric energy generated by the hot air flow generator 360 using the hot air flow to the power grid 400 for power peak period. The output end of the power grid 400 is connected to the heat storage component, so that when the power grid 400 is in the valley phase, the power grid 400 directly supplies power to the heat storage component for heating, thereby storing electric energy and further achieving valley shaving and peak filling, ensuring the reliability of the power supply system and the stability of its operation, and realizing energy storage and peak regulation of electricity.

[0028] According to an energy storage peak-shaving device provided by the present invention, the heat storage component includes a heat collection shed 300, a heat storage layer 310 and a heating component. The heat collection shed 300 includes a heat storage area and a gas storage area 340. The heat storage layer 310 is arranged in the heat storage area and is used to heat the air in the gas storage area 340.

[0029] The heating assembly is connected to the power generation mechanism and the power grid 400 respectively, and is arranged in the heat storage area to heat the heat storage layer 310, and the gas storage area 340 is connected to the hot air flow power generation assembly. It can be understood that the heat storage assembly includes a heat collection shed 300, a heat storage layer 310 and a heating assembly, the heat collection shed 300 is used to store the heat storage layer 310, and the heating assembly is used to heat the heat storage layer 310. The heat collection shed 300 includes a heat storage area and a gas storage area 340, and the heat storage area is connected to the gas storage area 340. In this embodiment, the gas storage area 340 is located on the upper side of the heat storage area, and the heat storage area is used to store hot air flow.

[0030] The heat storage layer 310 is arranged in the heat storage area to heat the air in the gas storage area 340 to form a hot air flow, which is stored in the gas storage area 340. The gas storage area 340 is connected to the hot air flow power generation component to transport the hot air flow in the gas storage area 340 to the hot air flow power generation component to convert the heat energy into electrical energy, and transmit the electrical energy to the power grid 400 to supply electricity during peak power periods.

[0031] Furthermore, the heating component is connected to the power generation mechanism and the power grid 400 respectively, and is arranged in the heat storage area to heat the heat storage layer 310. That is to say, during the peak period of electricity, the power generation mechanism provides electric energy to the heating component, so that the heating component heats the heat storage layer 310, and the heat storage layer 310 heats the air in the gas storage area 340 to generate a hot air flow, thereby storing electric energy to meet the electricity demand during the peak period of electricity; when the electricity is in the trough stage, the power grid 400 is connected to the heating component for power supply, so as to realize the storage of electricity from the power grid 400.

[0032] It should be noted that the heat storage layer 310 is a heat storage material.

[0033] According to an energy storage peak-shaving device provided by the present invention, the heating component includes a first heating element 320 and a second heating element 330, the first heating element 320 is connected to a power generation mechanism, and the second heating element 330 is connected to a power grid 400. It can be understood that the heating component includes a first heating element 320 and a second heating element 330, and the first heating element 320 and the second heating element 330 are both used to heat the heat storage layer 310. Among them, the first heating element 320 is connected to a power generation mechanism, so that the power generation mechanism supplies power to the first heating element 320, that is, new energy is generated, and the first heating element 320 is supplied with power to realize electric energy storage. The second heating element 330 is connected to the power grid 400, so that the power grid 400 supplies power to the second heating element 330, so as to realize electric energy storage.

[0034] According to an energy storage peak-shaving device provided by the present invention, a heat insulation layer 311 is provided on the bottom side and the peripheral side of the heat storage layer 310. It can be understood that the heat insulation layer 311 is provided on the bottom side and the peripheral side of the heat storage layer 310 to achieve thermal insulation of the heat storage layer 310. In other words, the bottom side of the heat storage layer 310 in contact with the soil is provided with a heat insulation layer 311 for isolating the soil from the heat storage layer 310. At the same time, the outer peripheral side of the heat storage bin 310 is also provided with a heat insulation layer 311 to prevent the heat loss of the heat storage layer 310 and improve the energy storage effect.

[0035] In one embodiment, the thermal insulation layer 311 is enclosed to form a U-shaped structure in longitudinal section, the internal space forms a heat storage area, the heat storage layer 310 is placed in the heat storage area, the heat collection shed 300 is arranged on the top side of the thermal insulation layer 311, and the gas storage area 340 is enclosed between the heat collection shed 300 and the heat storage layer 310.

[0036] In one embodiment, the top side wall and the surrounding side wall of the solar shed 300 enclose a accommodating cavity, and the accommodating cavity is divided into a heat storage area and a gas storage area, wherein the gas storage area is located above the heat storage area, and a heat insulation layer 311 is provided at the bottom of the solar shed 300, that is, the heat storage layer 310 is provided on the heat insulation layer 311 and is located in the heat storage area, and the inner side of the top side wall and the inner side of the surrounding side wall of the solar shed 300 are both provided with a heat insulation layer 311, or the heat insulation layer 311 is provided on the outer side of the top side wall and the outer side of the surrounding side wall of the solar shed 300 to form a coating.

[0037] According to an energy storage peak-shaving device provided by the present invention, the heat collection shed 300 is provided with an insulated air inlet, which is connected to the gas storage area 340, and the insulated air inlet is provided with a first switch 341. It can be understood that the heat collection shed 300 is provided with an insulated air inlet, which is connected to the gas storage area 340 to realize gas delivery to the gas storage area 340. The insulated air inlet is provided with a first switch 341 to control the on and off of the insulated air inlet. In this embodiment, the first switch 341 is an openable and closable insulated switch, which prevents the loss of hot air flow in the gas storage area 340 and improves the heat storage efficiency.

[0038] According to an energy storage peak-shaving device provided by the present invention, a hot air flow power generation component includes a hot air flow pipeline 350 and a hot air flow generator 360, the hot air flow pipeline 350 is in communication with the gas storage area 340, the hot air flow generator 360 is arranged in the hot air flow pipeline 350, and the hot air flow generator 360 is connected to the power grid 400. It can be understood that the hot air flow power generation component includes a hot air flow pipeline 350 and a hot air flow generator 360, the hot air flow pipeline 350 is shaped like a chimney to realize the diversion and transportation of hot air flow, and the hot air flow generator 360 is a generator that uses hot air flow to generate electricity.

[0039] The hot air flow pipeline 350 is connected to the gas storage area 340 to guide the hot air flow in the gas storage area 340 to the hot air flow pipeline 350. The hot air flow generator 360 is arranged in the hot air flow pipeline 350, and then the hot air flow enters the hot air flow generator 360 to generate electricity. The hot air flow generator 360 is connected to the power grid 400 to transmit the electric energy generated by the hot air flow generator 360 using the hot air flow to the power grid 400 to meet the power demand during the peak period.

[0040] According to an energy storage peak-shaving device provided by the present invention, the hot air flow pipeline 350 is provided with an air inlet end connected to the gas storage area 340, and a second switch 351 is provided at the air inlet end. It can be understood that the air inlet end of the hot air flow pipeline 350 is provided with a second switch 351, and the second switch 351 is used to control the on and off of the hot air flow between the hot air flow pipeline 350 and the gas storage area 340. In this embodiment, the second switch 351 is an openable and closable heat-insulating door, which realizes the heat insulation effect on the hot air flow in the gas storage area 340 and improves the energy storage efficiency.

[0041] According to an energy storage peak-shaving device provided by the present invention, a heat-insulating glass 370 is provided on the top side of the heat-collecting shed 300 to allow sunlight to irradiate and heat the gas storage area 340. It can be understood that the heat-insulating glass 370 is provided on the top side of the heat-collecting shed 300 to allow sunlight to irradiate the gas storage area 340 and heat the air in the gas storage area 340, and at the same time, effectively prevent the heat loss of the hot air flow in the gas storage area 340, thereby improving the energy storage efficiency.

[0042] According to an energy storage peak-shaving device provided by the present invention, the power generation mechanism includes a photovoltaic power generation unit 100 and a wind power generation unit 200, and the photovoltaic power generation unit 100 and the wind power generation unit 200 are both connected to the heat storage component. It can be understood that the power generation mechanism includes a photovoltaic power generation unit 100 and a wind power generation unit 200, the photovoltaic power generation unit 100 uses solar energy to generate electricity, and the wind power generation unit 200 uses wind power to generate electricity. The photovoltaic power generation unit 100 and the wind power generation unit 200 are both connected to the heat storage component. Specifically, two first heating elements 320 are provided, and the photovoltaic power generation unit 100 is connected to one of the first heating elements 320 to realize the transmission of electric energy converted from solar energy to the first heating element 320; the wind power generation unit 200 is connected to the other first heating element 320 to realize the transmission of electric energy converted from wind energy to the first heating element 320. In other words, solar energy and wind energy are converted into electric energy, and the electric energy is transmitted to the first heating element 320, so that the electric energy is stored in the heat storage layer 310.

[0043] It should be noted that the power generation mechanism may also adopt a hydroelectric power generation unit or a waste heat power generation unit.

[0044] According to the present invention, an energy storage peak-shaving device further includes a controller 500, the input end of the controller 500 is electrically connected to the power grid 400 to receive a power abandonment signal, and the output end of the controller 500 is electrically connected to the power generation mechanism to send a control signal. It can be understood that the controller 500 is also included, and the controller 500 is placed in the electric control cabinet and connected to the power grid 400 and the power generation mechanism respectively, so as to obtain the power abandonment signal sent by the power grid 400 and send a control signal to the power generation mechanism, thereby controlling the power transmission state of the photovoltaic power generation unit 100 and the wind power generation unit 200.

[0045] The working process of the energy storage peak-shaving device provided by the present invention is as follows:

[0046] Peak electricity season

[0047] The photovoltaic power generation unit 100 transmits the electric energy converted from solar energy to the first heating element 320, and the wind power generation unit 200 converts the wind energy into electric energy and transmits it to the first heating element 320. The first heating element 320 heats the heat storage layer 310, thereby converting the electric energy into heat energy and storing it in the heat storage layer 310.

[0048] When the first switch 341 is turned on, the air outside the heat collecting shed 300 enters the air storage area 340, and the heat storage layer 310 heats the air in the air storage area 340 to form a hot air flow; at the same time, sunlight passes through the heat insulating glass 370 to heat the air in the air storage area 340 synchronously;

[0049] When the second switch 351 is turned on, the hot air flow in the gas storage area 340 enters the hot air flow pipeline 350, and the hot air flow generator 360 absorbs the heat energy of the hot air flow and converts it into electric energy. The hot air flow generator 360 is connected to the power grid 400 to realize the transmission of electric energy and meet the power demand during the peak period.

[0050] Power trough period

[0051] The power grid 400 sends a power abandonment signal to the controller 500, and the controller 500 sends a control signal to the photovoltaic power generation unit 100 and the wind power generation unit 200, so that the photovoltaic power generation unit 100 and the wind power generation unit 200 no longer transmit power to the first heating element 320;

[0052] The power grid 400 transmits electric energy to the second heating element 330, the first switch 341 is closed, the second switch 351 is closed, the second heating element 330 heats the heat storage layer 310, and stores the valley electricity of the power grid 400. At the same time, the hot air flow is stored in the gas storage area 340, thereby achieving valley shaving and peak filling.

[0053] It should be noted that the opening and closing sizes of the first switch 341 and the second switch 351 are controllable, thereby achieving controllability of heat release and thus achieving controllability of power generation.

[0054] The energy storage peak-shaving device provided by the present invention comprises a power generation mechanism; a heat collection mechanism, the heat collection mechanism comprises a heat storage component and a hot air flow power generation component, the power generation mechanism is connected to the heat storage component, the heat storage component is used to transport hot air flow to the hot air flow power generation component, the hot air flow power generation component is connected to the input end of the power grid, and the output end of the power grid is connected to the heat storage component, the power generation mechanism provides electric energy to the heat storage component to heat the air flow and store the electric energy to form a hot air flow, the hot air flow power generation component uses the hot air flow to generate electricity, and transmits the electric energy to the power grid to meet the peak power demand, and in the power trough stage, the power grid can directly supply power to the heat storage component to realize power storage and energy storage, thereby realizing energy storage peak-shaving, ensuring the reliability of power supply and operational stability, reducing costs, realizing energy storage peak-shaving of electricity, and improving energy storage efficiency.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An energy storage peak-shaving device, characterized in that: include: Power generation organizations; A heat collection mechanism, the heat collection mechanism includes a heat storage component and a hot air flow power generation component, the power generation mechanism is connected to the heat storage component, the heat storage component is used to transport hot air flow to the hot air flow power generation component, the hot air flow power generation component is used to connect to the input end of the power grid, and the heat storage component is used to connect to the output end of the power grid, The heat storage assembly includes a heat collection shed, a heat storage layer and a heating assembly. The heat collection shed includes a heat storage area and a gas storage area. The heat storage layer is arranged in the heat storage area and is used to heat the air in the gas storage area. The heating components are connected to the power generation mechanism and the power grid respectively, and are arranged in the heat storage area to heat the heat storage layer. The gas storage area is connected to the hot air flow power generation component. The bottom side and the outer peripheral side of the heat storage layer are both provided with a heat insulation layer. The heat insulation layer is enclosed to form a U-shaped structure in longitudinal section, the internal space forms the heat storage area, the heat storage layer is placed in the heat storage area, the heat collection shed is arranged on the top side of the heat insulation layer, and the heat collection shed and the heat storage layer are enclosed to form the gas storage area. The top side of the heat collection shed is provided with heat-insulating glass to allow sunlight to irradiate the gas storage area for heating.

2. The energy storage peak shaving device according to claim 1, characterized in that: The heating assembly includes a first heating element and a second heating element, wherein the first heating element is connected to the power generation mechanism, and the second heating element is connected to the power grid.

3. The energy storage peak-shaving device according to claim 1, characterized in that: The heat collection shed is provided with a heat-insulating air inlet, the heat-insulating air inlet is communicated with the air storage area, and the heat-insulating air inlet is provided with a first switch.

4. The energy storage peak shaving device according to claim 1, characterized in that: The hot air flow power generation component includes a hot air flow pipeline and a hot air flow generator. The hot air flow pipeline is communicated with the gas storage area. The hot air flow generator is arranged in the hot air flow pipeline and connected to the power grid.

5. The energy storage peak-shaving device according to claim 4, characterized in that: The hot air flow pipeline is provided with an air inlet end connected to the air storage area, and a second switch is provided at the air inlet end.

6. The energy storage peak shaving device according to any one of claims 1 to 5, characterized in that: The power generation mechanism comprises a photovoltaic power generation unit and a wind power generation unit, and both the photovoltaic power generation unit and the wind power generation unit are connected to the heat storage component.

7. The energy storage peak-shaving device according to any one of claims 1 to 6, characterized in that: It also includes a controller, wherein an input end of the controller is electrically connected to the power grid to receive a power abandonment signal, and an output end of the controller is electrically connected to the power generation mechanism to send a control signal.

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