CN113890087A

CN113890087A - Energy supply system

Info

Publication number: CN113890087A
Application number: CN202111070715.0A
Authority: CN
Inventors: 王会; 亢猛; 钟迪; 钟祎勍; 彭烁; 王德学; 周贤; 王�琦
Original assignee: Hebei Xiong'an Branch Of China Huaneng Group Co ltd; Huaneng Clean Energy Research Institute
Current assignee: Hebei Xiong'an Branch Of China Huaneng Group Co ltd; Huaneng Clean Energy Research Institute
Priority date: 2021-09-13
Filing date: 2021-09-13
Publication date: 2022-01-04

Abstract

The invention discloses an energy supply system, which comprises a power supply assembly, an electric network, an electricity storage assembly, a cold supply assembly, a gas power supply assembly, a heat supply assembly and a gas boiler, wherein the power supply assembly can utilize renewable energy sources to generate electricity, for providing an electrical load to a user, the power supply assembly being connected to the power grid for providing the electrical load to the user via the power grid, the power storage assembly being connected to the power grid for storing excess electrical load on the power grid, or the power supply of the power grid is insufficient to supplement the electric load, the cooling component can prepare the cooling load by utilizing the heat, so that the cooling component can provide cooling load for users, the gas power supply component is connected with the power grid and can utilize gas to generate power, when the power supply of the power supply assembly is insufficient, the gas power supply assembly works to supplement the electric load to the user, the renewable energy sources of the heat supply assembly provide the heat load to the user, and the gas boiler can supply heat by using gas. The energy supply system has the advantages of continuous energy supply, stable energy supply, high energy utilization rate and the like.

Description

Energy supply system

Technical Field

The invention relates to the technical field of energy storage and application, in particular to an energy supply system.

Background

The renewable energy sources such as wind energy and solar energy have the characteristics of wide distribution range, low density, cleanness, no pollution and the like, so that the utilization rate of the wind energy and the solar energy is higher and higher.

In the related technology, solar energy and wind energy are influenced by weather factors, the problem of large fluctuation and discontinuity of power generation exists, the stable heat, electricity and cold requirements of users cannot be met, an energy storage technology does not play an effective energy coordination management role in a distributed energy system, and the current energy utilization efficiency is low.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.

Therefore, the embodiment of the invention provides an energy supply system which can continuously supply energy and has high energy utilization rate.

The power supply system according to the embodiment of the invention includes: a power supply assembly that can generate power using renewable energy sources to provide an electrical load to a user; a power grid, said power supply assembly being connected to said power grid for providing said electrical load to said customer through said power grid; an electricity storage assembly connected to the power grid for storing excess electrical loads on the power grid or supplementing the electrical loads when the power supply to the power grid is insufficient; a cooling component that can prepare a cooling load using heat so that the cooling component provides the cooling load to the user; the gas power supply assembly is connected with the power grid and can generate power by using gas, and when the power supply assembly is insufficient in power supply, the gas power supply assembly works to supplement the electric load to the user; a heating assembly that can provide a thermal load to the user using renewable energy; and the gas boiler can supply heat by utilizing gas, and when the heat supply of the heat supply assembly is insufficient, the gas boiler supplements the heat load to the user.

According to the energy supply system provided by the embodiment of the invention, through the arrangement of the power supply assembly, the power grid, the electricity storage assembly, the cooling assembly, the gas power supply assembly, the heat supply assembly and the gas boiler, the stability of power supply, heat supply and cooling is improved, the requirements of users on heat, electricity and cold are met, and the utilization rate of energy is improved.

In some embodiments, the energy supply system further comprises a heat storage assembly connected to the heat supply assembly and the gas boiler, respectively, for storing excess heat load.

In some embodiments, the thermal storage assembly comprises at least one or more of a sensible heat storage unit, a latent heat storage unit, and a thermochemical heat storage unit.

In some embodiments, the energy supply assembly further comprises a waste heat boiler disposed on the gas power generation assembly for collecting the heat load excess from the gas power generation assembly.

In some embodiments, the cooling assembly is an absorption chiller that can generate the cooling load using the heat load.

In some embodiments, the electrical storage assembly comprises an electrochemical energy storage unit connected to the electrical grid for converting excess of the electrical load on the electrical grid into chemical energy.

In some embodiments, the power storage assembly includes a compressed air energy storage unit connected to the power grid, the compressed air energy storage unit releasing heat to provide the thermal load to the user when the compressed air energy storage unit stores power, and absorbing heat to provide the cold load to the user when the compressed air energy storage unit releases power.

In some embodiments, the power supply assembly includes one or more of a fan power generation unit and a photovoltaic power generation unit.

In some embodiments, the heat supply assembly includes one or both of a solar heat collection unit and a geothermal heat source heat exchange unit.

In some embodiments, the energy supply system further comprises a gas pipe having a gas inlet, a first gas outlet, and a second gas outlet, the first gas outlet being coupled to the gas power supply assembly, the second gas outlet being coupled to the gas boiler such that the gas pipe supplies gas to the gas power supply assembly and the gas boiler.

Drawings

Fig. 1 is a schematic structural view of an energy supply system according to an embodiment of the present invention.

Reference numerals:

an energy supply system 100;

a power supply assembly 1; a fan power generation unit 11; a photovoltaic power generation unit 12; an electrical load 13; a power grid 2; an electricity storage component 3; an electrochemical energy storage unit 31; a compressed air energy storage unit 32; a cooling assembly 4; a cold load 41; a gas power supply assembly 5; a thermal load 51; a heating assembly 6; a solar heat collecting unit 61; a geothermal heat source heat exchange unit 62; a gas boiler 7; a gas pipe 8; an intake pipe 81; a first outlet duct 82; a second outlet pipe 83; a heat storage assembly 9; a waste heat boiler 10.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

An energy supply system according to an embodiment of the present invention is described below with reference to the drawings.

As shown in fig. 1, the power supply system according to the embodiment of the present invention includes: the system comprises a power supply assembly 1, a power grid 2, an electricity storage assembly 3, a cooling assembly 4, a gas power supply assembly 5, a heat supply assembly 6 and a gas boiler 7.

The power supply assembly 1 may generate electricity using renewable energy sources to provide an electrical load 13 to a user. Specifically, as shown in fig. 1, a power supply assembly 1 supplies power to a user by using renewable energy sources (e.g., wind energy, electric energy, solar energy, etc.) so as to meet daily power consumption requirements of the user.

The power supply assembly 1 is connected to the power grid 2 in order to provide a consumer with an electrical load 13 via the power grid 2. Specifically, as shown in fig. 1, the power grid 2 can connect the adjacent power supply components 1 with users to form a national or regional network for unified management and command. Therefore, the energy supply system provided by the embodiment of the invention can ensure the safety and reliability of power generation and power supply, adjust the power supply and demand balance among regions, keep the specified power quality and obtain the maximum economic benefit.

The electricity storage assembly 3 is connected to the power grid 2 in order to store excess electrical loads 13 on the power grid 2 or to supplement the electrical loads 13 when the power supply of the power grid 2 is insufficient. Specifically, as shown in fig. 1, the electricity storage assembly 3 is connected to the power grid 2, so as to store the redundant electric loads 13 on the power grid 2, prevent the electric loads 13 from running away, or supplement the electric loads 13 to the power grid 2 when the power on the power grid 2 is insufficient, and improve the utilization rate of the electric loads 13.

The cooling module 4 may generate a cooling load 41 using heat energy, and provide the cooling load 41 to a user.

The gas power supply assembly 5 is connected with the power grid 2 and can generate power by using gas, and when the power supply assembly 1 is short of power supply, the gas power supply assembly 5 works to supplement an electric load 13 to a user. Specifically, during a peak period of power consumption, for example, in summer or at night, the power load 13 generated by the power supply assembly 1 cannot meet the power consumption requirement of the user, or when the power supply assembly 1 cannot generate power due to bad weather, the gas power supply assembly 5 starts to work to ensure the power consumption requirement of the user.

The heating assembly 6 may provide a heat load 51 to the user using renewable energy. Specifically, as shown in fig. 1, the heating assembly 6 heats the user by using renewable energy (e.g., solar energy, geothermal energy, etc.) to meet the daily heating requirement of the user.

The gas boiler 7 can supply heat by using gas, and when the heat supply of the heat supply assembly 6 is insufficient, the gas boiler 7 supplements the heat load 51 to the user. Specifically, during peak periods of warming, for example: in winter, the heat load 51 generated by the heat supply unit 6 cannot meet the user's demand for heating, or when the heat supply unit 6 cannot operate due to bad weather, the gas boiler 7 starts to operate to ensure the user's demand for heating.

According to the energy supply system 100 provided by the embodiment of the invention, through the arrangement of the power supply assembly 1, the cooling assembly 4, the heating assembly 6, the gas power supply assembly 5 and the gas boiler 7, power supply, cooling and heating can be stably performed on users, integration and management of resources are facilitated, and flexible adjustment and reasonable distribution of energy are realized.

According to the energy supply system 100 provided by the embodiment of the invention, through the power supply assembly 1 and the gas power supply assembly 5, when the power supply assembly 1 is short of power supply, the gas power supply assembly 5 supplies the power load 13 to the user power grid 2, so that the power supply is stable, the power supply fluctuation is small, in addition, the electric energy can be stored in the energy consumption valley period through the power storage assembly 3, and the electric energy is released in the power consumption peak period, so that the flexible adjustment and reasonable distribution of the electric energy are realized.

In some embodiments, the energy supply system 100 further comprises a heat storage assembly 9, the heat storage assembly 9 being connected to the heat supply assembly 6 and the gas boiler 7, respectively, for storing excess heat load 51. From this, can store the unnecessary heat that heat supply subassembly 6 and gas boiler 7 produced through heat-retaining subassembly 9, when heat supply subassembly 6 or gas boiler 7 supply is not enough, or when with warm peak, heat-retaining subassembly 9 can release the heat of storage to guarantee the normal supply of heating installation, thereby realize nimble regulation and rational distribution to the energy.

In some embodiments, the thermal storage assembly 9 includes at least one or more of a sensible heat storage unit, a latent heat storage unit, and a thermochemical heat storage unit. Specifically, the heat storage assembly 9 may be selected according to actual conditions, for example: any one of a sensible heat storage unit, a latent heat storage unit and a thermochemical heat storage unit can be selected, two of the sensible heat storage units and the latent heat storage unit can be selected, or all the sensible heat storage units and the latent heat storage units can be selected, so that the flexibility of the heat storage assembly 9 is improved, and the service efficiency of the heat storage assembly 9 is ensured.

In some embodiments, the energy supply system 100 further comprises a waste heat boiler 10, the waste heat boiler 10 being disposed on the gas-fired power generation assembly for collecting excess heat load 51 of the gas-fired power generation assembly. Specifically, the exhaust-heat boiler 10 can collect the heat energy generated by burning the waste gas, waste material or waste liquid generated by the gas power generation assembly during the power generation process and combustible substances thereof, and provide the heat energy for the user to supply heat, thereby improving the use efficiency of the gas.

In some embodiments, the cold supply assembly 4 is an absorption chiller that can convert a heat load 51 into a cold load 41. Specifically, as shown in fig. 1, the absorption refrigerator can convert the heat load 51 of the heating unit 6 and the gas boiler 7 into the cold load 41 to provide cold energy to the user, thereby saving electric energy and having high safety.

In some embodiments, the electrical storage assembly 3 comprises an electrochemical energy storage unit 31, the electrochemical energy storage unit 31 being connected to the grid 2 for converting excess electrical load 13 on the grid 2 into chemical energy. The electrochemical energy storage unit 31 has high conversion efficiency, small volume and high storage speed. Therefore, the redundant electrical loads 13 on the power grid 2 are stored in the form of chemical energy by the electrochemical energy storage unit 31, so that the electrical storage efficiency of the electrical storage assembly 3 is improved.

In some embodiments, the electrical storage assembly 3 includes a compressed air energy storage unit 32, the compressed air energy storage unit 32 is connected to the electrical grid 2, the compressed air energy storage unit 32 releases heat to provide a thermal load 51 to the user when the compressed air energy storage unit 32 stores electrical power, and the compressed air energy storage unit 32 absorbs heat to provide a cooling load 41 to the user when the compressed air energy storage unit 32 releases electrical power. Since the compressed air energy storage unit 32 can release a large amount of heat when the compressed air energy storage unit 32 stores electricity, the user can be provided with the heat load 51, and the compressed air energy storage unit 32 can absorb heat when releasing energy, so that the user can be provided with the cold load 41. The heat load 51 and the cold load 41 generated by the compressed air energy storage unit 32 during operation are thus made available to the user.

In some embodiments, the power supply assembly 1 includes one or more of a fan power unit 11, a hydro-power unit, and a photovoltaic power unit 12. Specifically, the power supply module 1 may be selected according to local actual conditions, for example, a coastal city may select the fan power generation unit 11, the water conservancy power generation unit, and the photovoltaic power generation unit 12, and the fan power generation unit 11 and the water conservancy power generation unit are built more, and a flat land may select the fan power generation unit 11 and the photovoltaic power generation unit 12, and the photovoltaic power generation unit 12 is built more, so that renewable energy is consumed nearby, and reliability of renewable energy supply is realized.

It can be understood that: the wind power can be used for generating power by the fan power generation unit 11, the tidal power or the potential energy of water can be used for generating power by the water conservancy power generation unit, and the solar energy can be used for generating power by the photovoltaic power generation unit 12.

In some embodiments, the heating assembly 6 includes one or both of a solar heat collection unit 61 and a geothermal heat source heat exchange unit 62. In particular, the heating assembly 6 can be selected according to the actual conditions, for example: solar energy heat collection unit 61 can be built in the plateau area with sufficient sunshine, and solar energy heat collection unit 61 and geothermal heat source heat exchange unit 62 can be built in the plain area with lower terrain, so that heat supply assembly 6 is more reasonable in arrangement.

It is understood that the solar heat collecting unit 61 can use solar energy for heating and the geothermal heat source heat exchanging unit 62 can use geothermal energy for heating.

In some embodiments, the energy supply assembly 100 further comprises a gas pipe 8, the gas pipe 8 having a gas inlet, a first gas outlet and a second gas outlet, the first gas outlet being connected to the gas power supply assembly 5, the second gas outlet being connected to the gas boiler 7, such that the gas pipe 8 supplies gas to the gas power supply assembly 5 and the gas boiler 7. Specifically, as shown in fig. 1, the gas pipe 8 includes a gas inlet pipe 81, a first gas outlet pipe 82 and a second gas outlet pipe 83, the first gas outlet pipe 82 is connected to the gas power generation assembly, the second gas outlet pipe 83 is connected to the gas boiler 7, and the gas inlet pipe 81 is connected to the external gas pipe 8. Thereby, the gas boiler 7 and the gas power supply unit 5 are supplied with gas through the gas pipe 8.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. An energy supply system, comprising:

a power supply assembly that can generate power using renewable energy sources to provide an electrical load to a user;

a power grid, said power supply assembly being connected to said power grid for providing said electrical load to said customer through said power grid;

an electricity storage assembly connected to the power grid for storing excess electrical loads on the power grid or supplementing the electrical loads when the power supply to the power grid is insufficient;

a cooling component that can prepare a cooling load using heat so that the cooling component provides the cooling load to the user;

the gas power supply assembly is connected with the power grid and can generate power by using gas, and when the power supply assembly is insufficient in power supply, the gas power supply assembly works to supplement the electric load to the user;

a heating assembly that can provide a thermal load to the user using renewable energy sources;

and the gas boiler can supply heat by utilizing gas, and when the heat supply of the heat supply assembly is insufficient, the gas boiler supplements the heat load to the user.

2. The energy supply system of claim 1, further comprising a heat storage assembly connected to said heat supply assembly and said gas boiler, respectively, for storing excess of said heat load.

3. The energy supply system of claim 2, wherein the thermal storage assembly comprises at least one or more of a sensible heat storage unit, a latent heat storage unit, and a thermochemical heat storage unit.

4. The energy supply system of claim 1, further comprising a waste heat boiler disposed on said gas-fired power generation assembly for collecting said heat load excess from said gas-fired power generation assembly.

5. An energy supply system according to claim 4, characterized in that said cold supply assembly is an absorption chiller, said absorption chiller being operable to generate said cold load from said heat load.

6. An energy supply system according to claim 1, characterized in that said electricity storage assembly comprises an electrochemical energy storage unit connected to said electric network for converting excess of said electric load on said electric network into chemical energy.

7. The energy supply system of claim 1, wherein the electricity storage assembly comprises a compressed air energy storage unit connected to the power grid, the compressed air energy storage unit releasing heat to provide the heat load to the user when the compressed air energy storage unit stores electricity, and absorbing heat to provide the cold load to the user when the compressed air energy storage unit releases electricity.

8. An energy supply system according to any one of claims 1 to 7, wherein said power supply assembly includes one or more of a fan power generation unit and a photovoltaic power generation unit.

9. An energy supply system according to any one of claims 1-7, characterized in that said heat supply assembly comprises one or both of a solar heat collection unit and a geothermal heat exchange unit.

10. An energy supply system according to any one of claims 1-7, further comprising a gas pipe having a gas inlet, a first gas outlet and a second gas outlet, said first gas outlet being connected to said gas-powered assembly and said second gas outlet being connected to said gas boiler, such that said gas pipe supplies gas to said gas-powered assembly and said gas boiler.