Multi-path coordinated power generation device based on virtual power plant

By using a multi-path coordinated power generation device in a virtual power plant, and utilizing molten salt energy storage and heat exchange power generation modules, combined with wind power and photovoltaic modules, the problems of instability and power supply mismatch between wind power and solar power generation have been solved, thus achieving stable power supply from the grid.

CN223957302UActive Publication Date: 2026-02-27浙江大唐能源营销有限公司 +1
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Patent Information

Application Number
CN202520191838.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-07
Publication Date
2026-02-27
Estimated Expiration
2035-02-07

AI Technical Summary

Technical Problem

The instability of wind and solar power generation and the mismatch between peak power generation and peak electricity consumption make it difficult for electricity to be used directly and efficiently.

Method used

A multi-path coordinated power generation device based on a virtual power plant is adopted, including wind power components, photovoltaic components, virtual power plant modules, energy storage power supply components and chemical energy storage components. The energy storage system, composed of molten salt energy storage and heat exchange power generation modules, combined with temperature sensors and solenoid valves, realizes the storage and conversion of electrical energy to stabilize power supply.

Benefits of technology

It improves the stability of wind and solar power to the power grid, and ensures the stability and efficient use of power supply by storing and converting electrical energy.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model relates to the field of power supply equipment, in particular to a multi-path coordinated power generation device based on a virtual power plant, which comprises a wind power assembly, a power supply assembly and a power supply assembly, the photovoltaic module comprises a plurality of solar cell panels for supplying power to a power grid; the virtual power plant module is respectively connected with the wind power assembly and the photovoltaic assembly and is used for controlling the power supply quantity of the wind power assembly and the photovoltaic assembly to the power utilization grid; the energy storage power supply assembly is connected with the virtual power plant module and comprises a fused salt energy storage device and a plurality of heat exchange power generation modules; a chemical energy storage component. And the stability of multi-path power supply is realized through the virtual power plant.
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Description

TECHNICAL FIELD

[0001] The utility model relates to power supply equipment field especially, relates to a kind of multi-path coordinated power generation device based on virtual power plant. BACKGROUND

[0002] With the increase of wind power generation and solar power generation installed capacity, the proportion of wind power and solar power in power grid power supply is increasing, but wind power and solar power exist voltage instability, power generation peak and power consumption peak mismatch, or electric energy resource rich areas and power consumption areas do not coincide with electric energy, leading to these electric energy often difficult to be directly, efficiently utilized, therefore, the above problems need to be solved urgently.

[0003] The core of virtual power plant is "virtualization" technology, that is, through data communication and information technology means, the dispersed, small renewable energy equipment, energy storage equipment and energy-using equipment and other resources are virtualized and integrated to form a unified, coordinated energy management system. Therefore, how to utilize virtual power plant to realize wind power generation and solar power generation electric power for the stable power supply of power supply grid needs to be solved urgently. UTILITARY MODEL CONTENT

[0004] Therefore, the utility model provides a kind of multi-path coordinated power generation device based on virtual power plant to overcome the stability problem of solar power and wind power supply in prior art.

[0005] To achieve the above object, the utility model provides a kind of multi-path coordinated power generation device based on virtual power plant, comprising:

[0006] Wind power assembly, which includes a plurality of wind driven generators for supplying power to power grid;

[0007] Photovoltaic assembly, which includes a plurality of solar panels for supplying power to power grid;

[0008] Virtual power plant module, which is connected to the wind power assembly and the photovoltaic assembly respectively, for controlling the power supply of wind power assembly and photovoltaic assembly to the power grid;

[0009] Energy storage power supply assembly, which is connected to the virtual power plant module, includes molten salt energy storage device and a plurality of heat exchange power generation modules;

[0010] The molten salt energy storage device includes molten salt storage cavity, heating resistance wire and molten salt, wherein the heating resistance wire is connected to the virtual power plant module;

[0011] The single heat exchange power generation module comprises a heat exchanger, a steam generator, a steam conveying pipeline, a steam turbine and an electric power generator, wherein the molten salt energy storage device is connected with the virtual power plant module, one end of the heat exchanger is arranged in the molten salt energy storage device, the other end of the heat exchanger is arranged in the steam generator, the output end of the steam generator is provided with the steam conveying pipeline, the output end of the steam conveying pipeline is connected with the steam turbine, the steam turbine is connected with the electric power generator, and the electric power generator is connected with the virtual power plant module.

[0012] Further, the virtual power plant module stores the residual electric energy into the molten salt energy storage device in response to the power supply amount of the wind power assembly and the photovoltaic assembly to the power grid being greater than the demand amount of the power grid.

[0013] Further, the virtual power plant module converts the heat energy stored by the energy storage power supply assembly into electric energy and delivers the electric energy to the power grid in response to the power supply amount of the wind power assembly and the photovoltaic assembly to the power grid being less than the demand amount of the power grid.

[0014] Further, each steam conveying pipeline is provided with an electromagnetic valve.

[0015] Further, the chemical energy storage assembly comprises a plurality of storage batteries, and each storage battery is connected with the virtual power plant module.

[0016] Further, the molten salt storage cavity is further provided with a temperature sensor, and the temperature sensor is connected with the virtual power plant module.

[0017] Further, the virtual power plant module cuts off the connection between the energy storage power supply assembly and the virtual power plant module and closes the connection between the chemical energy storage assembly and the virtual power plant module in response to the temperature of the molten salt collected by the temperature sensor being greater than a preset temperature.

[0018] The energy storage power supply assembly composed of the molten salt energy storage device and the plurality of heat exchange power generation modules, the virtual power plant module, the virtual power plant module storing the residual electric energy into the molten salt energy storage device in response to the power supply amount of the wind power assembly and the photovoltaic assembly to the power grid being greater than the demand amount of the power grid, and the virtual power plant module converting the heat energy stored by the energy storage power supply assembly into electric energy and delivering the electric energy to the power grid in response to the power supply amount of the wind power assembly and the photovoltaic assembly to the power grid being less than the demand amount of the power grid, so that the stability of the power grid supplied by the wind power generation and the solar power generation is improved.

[0019] Further, the chemical energy storage assembly and the temperature sensor are arranged, and the virtual power plant module stores electric energy into the chemical energy storage assembly when the molten salt energy storage device is saturated, thereby preventing overload. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 A structure schematic view of the multi-path coordinated power generation device based on the virtual power plant according to the embodiments of the present utility model is shown in the figure.

[0021] In the figure: 1, wind power assembly; 2, photovoltaic assembly; 3, virtual power plant module; 411, molten salt storage cavity; 412, heating resistance wire; 413, molten salt; 421, heat exchanger; 422, steam generator; 423, steam conveying pipeline; 424, steam turbine; 425, electric power generator; 426, electromagnetic valve; 5, chemical energy storage assembly; 427, temperature sensor; 6, power grid. DETAILED DESCRIPTION

[0022] In order to make the purpose, features and advantages of the present utility model more obvious and easy to understand, the technical solutions in the embodiments of the present utility model are described clearly and completely. Obviously, the embodiments described below are only part of the embodiments of the present utility model, but not all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present utility model.

[0023] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present utility model.

[0024] In the description of the present utility model, "a plurality of" means at least two, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0025] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present utility model can be understood according to the specific circumstances.

[0026] Please refer toFigure 1 The utility model discloses an embodiment of a kind of multi-path coordination power generation device based on virtual power plant, comprising:

[0027] Wind power assembly 1, it includes several wind-driven generators to power power grid 6;

[0028] Photovoltaic assembly 2, it includes several solar panels to power power grid 6;

[0029] Virtual power plant module 3, it is connected with wind power assembly 1 and photovoltaic assembly 2 respectively, to control wind power assembly 1 and photovoltaic assembly 2 power supply amount of power grid 6;

[0030] Energy storage power supply assembly, it is connected with virtual power plant module 3, including molten salt energy storage and several heat exchange power generation module groups;

[0031] The molten salt energy storage includes molten salt storage cavity 411, heating resistance wire 412 and molten salt 413, wherein the heating resistance wire 412 is connected with virtual power plant module 3;

[0032] Single heat exchange power generation module group includes heat exchanger 421, steam generator 422, steam delivery pipeline 423, steam turbine 424 and power generator 425, wherein the molten salt energy storage is connected with virtual power plant module 3, one end of the heat exchanger 421 is arranged in the molten salt energy storage, the other end of heat exchanger 421 is arranged in steam generator 422, the output end of steam generator 422 is provided with steam delivery pipeline 423, the output end of steam delivery pipeline 423 is connected with steam turbine 424, steam turbine 424 is connected with power generator 425, and power generator 425 is connected with virtual power plant module 3.

[0033] Specifically, the virtual power plant module 3, for example, has a chip with a system program, or is provided with a PLC with a preset response instruction, and is not specifically limited, as long as it can output the corresponding result according to the set conditions.

[0034] Specifically, the virtual power plant module 3 stores the remaining electric energy to the molten salt energy storage in response to the power supply amount of wind power assembly 1 and photovoltaic assembly 2 to power grid 6 being greater than the demand amount of power grid 6. In this way, when the electric energy generated by wind power assembly 1 and photovoltaic assembly 2 is surplus, the electric energy can be converted into heat energy and stored in the molten salt energy storage. Compared with the battery, the cost of the molten salt energy storage is lower.

[0035] Specifically, the virtual power plant module 3 converts the thermal energy stored in the molten salt energy storage component into electric energy and delivers the electric energy to the power grid 6 in response to the power supply of the wind power component 1 and the photovoltaic component 2 to the power grid 6 being less than the demand of the power grid 6. In this way, the thermal energy stored in the molten salt energy storage component can be converted into electric energy to compensate for the power of the power grid 6 when the electric energy generated by the wind power component 1 and the photovoltaic component 2 is insufficient, thereby ensuring the stability of power supply.

[0036] Specifically, an electromagnetic valve 426 is arranged on each steam delivery pipeline 423, so that the automatic control of the steam delivery flow can be realized.

[0037] Specifically, the chemical energy storage component 5 further includes a plurality of batteries, and each battery is connected to the virtual power plant module 3, so that the excess electric energy can be converted into chemical energy for storage.

[0038] Specifically, the molten salt storage cavity 411 is further provided with a temperature sensor 427, and the temperature sensor 427 is connected to the virtual power plant module 3. The temperature sensor 427 is, for example, a thermocouple temperature sensor 427, and is not specifically limited as long as it can withstand the melting temperature of molten salt.

[0039] Specifically, the virtual power plant module 3 cuts off the connection between the energy storage power supply component and the virtual power plant module 3 and closes the connection between the chemical energy storage component 5 and the virtual power plant module 3 in response to the molten salt temperature collected by the temperature sensor 427 being greater than a preset temperature, so that the electric energy can be stored in the chemical energy storage component 5 when the energy storage saturation of the molten salt energy storage component is monitored, thereby preventing overload.

[0040] For those skilled in the art, according to the idea of the embodiments of the present application, there will be changes in the specific implementation manner and application range. In summary, the content of the present description should not be understood as a limitation of the present application.

Claims

1. A multi-path coordinated power generation device based on a virtual power plant, characterized by, The utility model relates to a virtual power plant module, a molten salt energy storage device and a chemical energy storage device. The virtual power plant module is connected to the wind power assembly and the photovoltaic assembly respectively, and controls the power supply of the wind power assembly and the photovoltaic assembly to the power grid. The virtual power plant module is connected to the molten salt energy storage device and the chemical energy storage device. The virtual power plant module is connected to the molten salt energy storage device and the chemical energy storage device. The virtual power plant module is connected to the molten salt energy storage device and the chemical energy storage device. The virtual power plant module is connected to the molten salt energy storage device and the chemical energy storage device. The virtual power plant module is connected to the molten salt energy storage device and the chemical energy storage device.

2. The virtual power plant based multi-path coordinated power generation device according to claim 1, wherein, The virtual power plant module is connected to the molten salt energy storage device and the chemical energy storage device.

3. The virtual power plant based multi-path coordinated power generation device according to claim 2, wherein, The virtual power plant module is connected to the molten salt energy storage device and the chemical energy storage device.

4. The virtual power plant based multi-path coordinated power generation apparatus according to claim 1, wherein The virtual power plant module is connected to the molten salt energy storage device and the chemical energy storage device.

5. The virtual power plant based multi-path coordinated power generation apparatus according to claim 1, wherein The virtual power plant module is connected to the molten salt energy storage device and the chemical energy storage device.

6. The virtual power plant based multi-path coordinated power generation device according to claim 5, wherein The virtual power plant module is connected to the molten salt energy storage device and the chemical energy storage device.

7. The virtual power plant based multi-path coordinated power generation device according to claim 6, wherein, The virtual power plant module is connected to the molten salt energy storage device and the chemical energy storage device. The virtual power plant module is connected to the molten salt energy storage device and the chemical energy storage device. The virtual power plant module is connected to the molten salt energy storage device and the chemical energy storage device. The virtual power plant module is connected to the molten salt energy storage device and the chemical energy storage device. The virtual power plant module is connected to the molten salt energy storage device and the chemical energy storage device. The virtual power plant module is connected to the molten salt energy storage device and the chemical energy storage device. The virtual power plant module is connected to the molten salt energy storage device and the chemical energy storage device. 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