Electrical energy transport system

Abstract

The application provides an electric energy transportation system, which comprises a power generation platform arranged on the sea, the power generation platform comprising at least one of a photovoltaic module, a wind power module and a tidal power module; a plurality of energy storage modules, each energy storage module comprising a battery system and an energy storage converter integrated with the battery system, the energy storage converter being electrically connected with the battery system, and at least one energy storage module being electrically connected with the power generation platform; and a tugboat, which transports the energy storage module to a power consumption platform to discharge, so as to complete electric energy transportation.

Description

Technical Field

[0001] This application mainly relates to the field of offshore power generation and transmission, and in particular to an electric power transportation system. Background Technology

[0002] With traditional fossil fuels failing to meet humanity's ever-growing energy demands, new marine energy sources have garnered significant attention. Compared to onshore resources, marine resources are more diverse, including not only solar power but also wind and tidal power. These clean and pollution-free marine energy resources are a key component of future power systems.

[0003] The limited power resources developed in marine areas too close to ports make it unsuitable for setting up large-scale power generation platforms. As marine power development expands from nearshore to offshore, the developed offshore power resources are difficult to transport back to onshore power centers and cannot supply power to multiple ports. Existing technologies using pipeline transmission, such as laying submarine cables between offshore power centers and port power grids, face numerous challenges due to the complex marine environment and the distance between offshore power centers and ports, including technical, cost, safety, and maintenance issues. While energy storage vessels use energy storage modules for power transportation, these modules are fixed to the hull, making disassembly and expansion difficult, and the vessels require time-consuming recharging and discharging cycles. Furthermore, additional AC / DC and DC / AC converters are needed during charging and discharging. Therefore, existing energy storage vessel transportation methods lack flexibility and adaptability, and are insufficient for fully utilizing developed offshore power resources.

[0004] In order to overcome the above-mentioned defects in the existing technology, there is an urgent need in the field for an electric energy transportation system that can realize direct electrical connection between energy storage modules and the power grid and various power equipment, eliminate the time consumption caused by the alternating charging and discharging of energy storage vessels, thereby improving the efficiency of electric energy transportation and increasing the utilization rate of electric energy. Utility Model Content

[0005] The technical problem to be solved by this application is to provide an electric energy transportation system that enables direct electrical connection between energy storage modules and the power grid and various power equipment, eliminates the time consumption caused by the alternating charging and discharging of energy storage vessels, thereby improving the efficiency of electric energy transportation and increasing the utilization rate of electric energy.

[0006] To address the aforementioned technical problems, this application provides an electric power transportation system, comprising: a power generation platform deployed at sea, the power generation platform including at least one of photovoltaic modules, wind power modules, and tidal power modules; multiple energy storage modules, each energy storage module including a battery system and an energy storage converter integrated with the battery system, the energy storage converter being electrically connected to the battery system, and at least one energy storage module being electrically connected to the power generation platform; and a tugboat, the tugboat transporting the energy storage modules to the power-consuming platform for discharge, thereby completing the electric power transportation.

[0007] Compared with the prior art, this application has the following technical effects:

[0008] (1) By using tugboats and multiple energy storage modules, the tugboats can be fully utilized to transport the energy storage modules that have completed charging and discharging during the charging and discharging time of the energy storage modules, thereby improving the efficiency of power transportation and increasing the utilization rate of power.

[0009] (2) Through the energy storage converter integrated with the battery system in the energy storage module, direct electrical connection between the energy storage module and the power consumption platform and the power generation platform can be realized without the need for additional AC / DC converters and DC / AC converters. Attached Figure Description

[0010] The accompanying drawings are included to provide a further understanding of this application; they are incorporated into and constitute a part of this application. The drawings illustrate embodiments of this application and, together with this specification, serve to explain the principles of this application. In the drawings:

[0011] Figure 1 This is a schematic diagram of the structure of an electric power transportation system according to an embodiment of this application;

[0012] Figure 2 yes Figure 1 A schematic diagram of the energy storage module in the diagram;

[0013] Figure 3 yes Figure 1 A structural diagram of the tugboat in the diagram;

[0014] Figure 4 This is a schematic diagram of the electrical connection between the energy storage module and the power generation platform in an embodiment of the electric energy transportation system of this application;

[0015] Figure 5 This is a schematic diagram of the electrical connection between the electrical equipment and the energy storage module in a power generation platform according to an embodiment of this application;

[0016] Figure 6 This is a schematic diagram of the electrical connection between the electrical equipment and the battery module in a power generation platform according to an embodiment of this application;

[0017] Figure 7This is a schematic diagram of the electrical connection between the energy storage module and the tugboat in an embodiment of the electric energy transportation system of this application;

[0018] Figure 8 This is a schematic diagram of the electrical connection between the energy storage module and the tugboat in an electric energy transportation system according to another embodiment of this application;

[0019] Figure 9 This is a schematic diagram of the electrical connection between the energy storage module and the power consumption platform in an embodiment of the electric energy transportation system of this application.

[0020] Reference numerals: Electric power transmission system 10, power generation platform 100, photovoltaic module 110, photovoltaic module 111, charging controller 112, wind power module 120, tidal power generation module 130, electrical equipment 140, battery module 150, energy storage module 200, energy storage converter 210, battery system 220, tugboat 300, power motor 310, power battery 320, power platform 400. Detailed Implementation

[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are merely some examples or embodiments of this application. For those skilled in the art, these drawings can be applied to other similar scenarios without creative effort. Unless obvious from the context or otherwise specified, the same reference numerals in the drawings represent the same structures or operations.

[0022] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" are not specifically singular and may include plural forms. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.

[0023] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0024] It should be understood that when a component is referred to as "on another component," "connected to another component," "coupled to another component," or "in contact with another component," it can be directly on, connected to, coupled to, or in contact with that other component, or there may be an intervening component. In contrast, when a component is referred to as "directly on another component," "directly connected to," "directly coupled to," or "directly in contact with" another component, there is no intervening component. Similarly, when a first component is referred to as "electrically contacting" or "electrically coupled to" a second component, there is an electrical path between the first and second components that allows current to flow. This electrical path may include capacitors, coupled inductors, and / or other components that allow current to flow, even if there is no direct contact between the conductive components.

[0025] The electric power transmission system of this application will now be described through specific embodiments.

[0026] refer to Figure 1 The diagram illustrates the structure of an embodiment of an electric power transportation system 10. The system includes a power generation platform 100 deployed at sea, multiple energy storage modules 200, multiple tugboats 300, and a power consumption platform 400. It is understood that the number of energy storage modules is not limited to... Figure 1 The two shown are not limited to the number of tugboats. Figure 1 The two vessels shown may, in some embodiments, contain more than two energy storage modules and more than two tugboats. For example, the number of energy storage modules may be three, four, or five, and the number of tugboats may be three, four, or five, etc. The number of tugboats is not limited to the number of energy storage modules. In some embodiments, the number of tugboats may not be equal to the number of energy storage modules; for example, the number of tugboats may be greater than the number of energy storage modules, or the number of tugboats may be less than the number of energy storage modules.

[0027] The power generation platform 100 includes a photovoltaic module 110, a wind power module 120, and a tidal power module 130. It is understood that the power generation platform is not limited to... Figure 1 The diagram shows a combination of photovoltaic modules, wind power modules, and tidal power modules. In some embodiments, the power generation platform may include at least one of these modules.

[0028] Next, refer to Figure 1 As shown, the energy storage module 200 is electrically connected to the power generation platform 100. After the energy storage module 200 is fully charged, the tugboat 300 transports it to the power consumption platform 400, where the energy storage module 200 discharges into the power consumption platform 400, thus completing the energy transfer. It should be noted that the tugboat 300 transporting the energy storage module 200 to the power consumption platform 400 is not an improvement of this application; please refer to relevant technologies for further explanation.

[0029] Next, refer to Figure 1 As shown, at any given time, at least one energy storage module 200 is connected to the power generation platform 100. Figure 1 In one embodiment shown, the power generation platform 100 is electrically connected to two energy storage modules 200. When one energy storage module 200 disconnects from the power generation platform 100, the other energy storage module 200 remains electrically connected to the power generation platform 100 until a new energy storage module 200 establishes an electrical connection with the power generation platform 100, at which point the electrical connection with the power generation platform 100 can be disconnected. This ensures that at least one energy storage module 200 receives the electrical energy output from the power generation platform 100, thereby improving the utilization rate of electrical energy.

[0030] refer to Figure 2 shown Figure 1 The diagram illustrates the structure of the energy storage module 200. The energy storage module 200 includes a battery system 220 and an energy storage inverter 210 integrated with the battery system 220. The battery system 220 and the energy storage inverter 210 are electrically connected. The integrated design of the energy storage inverter 210 and the battery system 220 means that both the energy storage inverter 210 and the battery system 220 must be housed within the energy storage module 200; neither can be used alone. In other words, the energy storage inverter 210 must move with the energy storage module 200. Figure 2 As shown, the energy storage converter 210 is electrically connected to the battery system 220, enabling the battery system 220 to be electrically connected to the power generation platform 100 and the power consumption platform 400 via the energy storage converter 210. Compared to existing technologies, no additional AC / DC converters or DC / AC converters are required.

[0031] refer to Figure 3 shown Figure 1The schematic diagram of the tugboat 300 shows that it includes a power motor 310 and a power battery 320. The power motor 310 is the power unit of the tugboat 300, used to drive the tugboat 300 to navigate on the sea surface. Figure 3 As shown, the power motor 310 is electrically connected to the power battery 320, and the power required by the power motor 310 is provided by the power battery 320. Thus, when the energy storage module 200 is electrically connected to the power generation platform 100, the tugboat 300 can be separated from the energy storage module 200, allowing the tugboat 300 to sail independently without the energy storage module 200, thereby improving the utilization rate of the tugboat.

[0032] refer to Figure 4 The diagram illustrates the electrical connection between an energy storage module and a power generation platform in an embodiment of an electric power transmission system. The photovoltaic module 110 further includes a charging controller 112 and arranged photovoltaic modules 111, with the charging controller 112 electrically connected to the photovoltaic modules 111. The arrangement of the photovoltaic modules 111 is not an improvement of this application; please refer to related technologies for further explanation. It is understood that the number of photovoltaic modules 111 in the photovoltaic module 110 can be multiple, for example, one, two, three, four, etc.

[0033] like Figure 4 As shown, the electrical energy generated by the photovoltaic module 111 is transmitted to the battery system 220 in the energy storage module 200 through the charge controller 112. The charge controller 112 is located inside the photovoltaic module 110 and can monitor the electrical energy generated by the photovoltaic module 111 at all times, and optimize the charging power of the photovoltaic module 111 to the battery system 220 to prevent the battery system 220 from being overcharged and thus avoid damage to the battery system 220.

[0034] Next, refer to Figure 4 As shown, the wind power module 120 in the power generation platform 100 is electrically connected to the energy storage converter 210 in the energy storage module 200. The electrical energy generated by the wind power module 120 is transmitted through the energy storage converter 210 and finally to the battery system 220, which is electrically connected to the energy storage converter 210. In this electrical connection mode, the energy storage converter 210 is in rectification mode, that is, it converts AC power to DC power. In other words, the energy storage converter 210 in rectification mode converts the AC power transmitted from the wind power module 120 into DC power, thereby charging the battery system 220. In some embodiments, the energy storage converter 210 can also rectify, regulate, and perform maximum power point tracking (MPPT) on the transmitted AC power. After that, the energy storage converter 210 transmits the DC power processed by the above-mentioned methods to the battery system 220.

[0035] Next, refer to Figure 4As shown, the tidal power generation module 130 in the power generation platform 100 is electrically connected to the energy storage converter 210 in the energy storage module 200. The electrical energy generated by the tidal power generation module 130 is transmitted through the energy storage converter 210 and finally to the battery system 220, which is electrically connected to the energy storage converter. In this electrical connection mode, the energy storage converter 210 operates in rectification mode, converting the AC power output from the tidal power generation module 130 into DC power to charge the battery system 220.

[0036] Figure 4 The electrical connection shown is a schematic diagram of one embodiment. It can be understood that in other embodiments, at least one of the photovoltaic module, wind power module, and tidal power module is electrically connected to the battery system to charge the battery system 220. The specific connection method is described above and will not be described again here.

[0037] refer to Figure 5 The diagram illustrates the electrical connection between the power-consuming equipment and the energy storage module in a power generation platform according to one embodiment. The power generation platform 100 also includes power-consuming equipment 140, which is used to ensure the normal operation of the power generation platform 100. An energy storage converter 210 is electrically connected to the power-consuming equipment 140 in the power generation platform. The electrical energy stored in the battery system 220 is transmitted to the power-consuming equipment 140 through the energy storage converter 210. In this electrical connection method, the energy storage converter 210 operates in inverter mode, which converts direct current (DC) to alternating current (AC). In other words, the energy storage converter 210 in inverter mode converts the DC output from the battery system 220 into AC, thereby supplying power to the power-consuming equipment 140. In some embodiments, the energy storage converter 210 simultaneously performs inverter and synchronization functions, controlling and adapting the output AC power according to the power consumption standards of the power-consuming equipment to stabilize the current output, prevent the power-consuming equipment from being impacted, and thus improve the service life of the power-consuming equipment.

[0038] It should be noted that when the power generation platform is electrically connected to the energy storage module, the charging and discharging of the battery system 220 can occur simultaneously. That is, in some embodiments, Figure 4 and Figure 5 The electrical connection methods shown exist simultaneously.

[0039] refer to Figure 6 The diagram illustrates the electrical connection between the power-consuming equipment and the battery module in another embodiment of the power generation platform 100. The power generation platform 100 also includes a battery module 150, and the power-consuming equipment 140 is electrically connected to the battery module 150. The operating power required by the power-consuming equipment 140 can be provided by the battery module 150.

[0040] refer to Figure 7The diagram illustrates the electrical connection between the energy storage module and the tugboat in an embodiment of an electric power transportation system. The battery system 220 is electrically connected to the power motor 310 in the tugboat via an energy storage converter 210. In this connection method, the energy storage converter 210 operates in inverter mode. The DC power output from the battery system 220 is first transmitted to the energy storage converter 210, converted into AC power, and then transmitted to the power motor 310.

[0041] refer to Figure 8 The diagram illustrates the electrical connection between an energy storage module and a tugboat in another embodiment of an electric power transportation system. The battery system 220 of the energy storage module is electrically connected to the power battery 320 of the tugboat, and the battery system 220 uses its stored electrical energy to charge the power battery 320. Thus, there is no need to stop the tugboat to charge it, as the tugboat can be charged while transporting the energy storage module, which improves the utilization rate of the tugboat and thus improves the efficiency of electric power transportation.

[0042] It should be noted that the battery system 220 can charge the power battery 320 and supply power to the power motor 310 simultaneously or separately. This is understandable. Figure 7 and Figure 8 The two electrical connection methods shown do not conflict; in some embodiments, Figure 7 and Figure 8 Both electrical connection methods shown exist simultaneously.

[0043] refer to Figure 9 The diagram illustrates the electrical connection between an energy storage module and a power-consuming platform in an embodiment of an electric power transportation system. The energy storage module 200 is electrically connected to the power-consuming platform 400 via an energy storage inverter 210. In this connection method, the energy storage inverter 210 is an inverter module. The DC power output from the battery system 220 passes through the energy storage inverter 210, which then transmits the inverted AC power to the power-consuming platform 400. In some embodiments, the power-consuming platform 400 includes a power grid and / or an offshore operating platform. It is understood that the number of power-consuming platforms 400 is not limited to this. Figure 9 As shown in one example, in some embodiments, the number of power platforms 400 is 2, 3, 4, etc.

[0044] In other embodiments, the power generation platform 100 is movable, and the tugboat 300 can transport the power generation platform 100 to the target power generation area or offshore operation platform.

[0045] The basic concepts have been described above. Obviously, for those skilled in the art, the above disclosure is merely illustrative and does not constitute a limitation of this application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this application. Such modifications, improvements, and corrections are suggested in this application, and therefore remain within the spirit and scope of the exemplary embodiments of this application.

[0046] Furthermore, this application uses specific terms to describe embodiments of the application. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic related to at least one embodiment of the application. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of the application can be appropriately combined.

[0047] Similarly, it should be noted that, in order to simplify the description of the present application and thus aid in the understanding of one or more embodiments, the foregoing description of the embodiments of the present application sometimes combines multiple features into a single embodiment, drawing, or description thereof. However, this disclosure method does not imply that the subject matter of the present application requires more features than those mentioned in the claims. In fact, the embodiments contain fewer features than all the features of the single embodiments disclosed above.

[0048] Although this application has been described with reference to specific embodiments, those skilled in the art should recognize that the above embodiments are only used to illustrate this application, and various equivalent changes or substitutions can be made without departing from the spirit of this application. Therefore, any changes or modifications to the above embodiments within the essential spirit of this application will fall within the scope of the claims of this application.

Claims

1. An electric power transmission system, characterized in that, include: A power generation platform deployed at sea, the power generation platform including at least one of photovoltaic modules, wind power modules, and tidal power modules; Multiple energy storage modules, each of the energy storage modules including a battery system and an energy storage converter integrated with the battery system, the energy storage converter being electrically connected to the battery system, and at least one of the energy storage modules being electrically connected to the power generation platform; as well as A tugboat transports the energy storage module to a power platform for discharge, thereby completing the energy transport.

2. The electric power transmission system as described in claim 1, characterized in that, The energy storage module is electrically connected to the wind power module and / or the tidal power generation module through the energy storage converter, wherein the wind power module and / or the tidal power generation module transmit electrical energy to the energy storage module through the energy storage converter.

3. The electric power transmission system as described in claim 1, characterized in that, The energy storage module is electrically connected to the power consumption platform through the energy storage converter, wherein the energy storage module transmits electrical energy to the power consumption platform through the energy storage converter.

4. The electric power transmission system as described in claim 1 or 3, characterized in that, The power-consuming platform includes power grids and / or offshore operation platforms.

5. The electric power transmission system as described in claim 1, characterized in that, At least one of the energy storage modules is electrically connected to the electrical equipment in the power generation platform via an energy storage converter, wherein the energy storage module transmits electrical energy to the electrical equipment via the energy storage converter.

6. The electric power transmission system as described in claim 1 or 5, characterized in that, The power generation platform also includes a battery module, which is electrically connected to the electrical equipment in the power generation platform.

7. The electric power transmission system as described in claim 1, characterized in that, The photovoltaic module includes a charging controller and a plurality of photovoltaic modules arranged in an array, wherein the charging controller is electrically connected to the plurality of photovoltaic modules.

8. The electric power transmission system as described in claim 7, characterized in that, The energy storage module is electrically connected to the photovoltaic module through the charging controller, wherein the photovoltaic module transmits electrical energy to the energy storage module through the charging controller.

9. The electric power transmission system as described in claim 1, characterized in that, The tugboat's power unit is a motor, and the tugboat also includes a power battery, which is electrically connected to the motor.

10. The electric power transportation system as described in claim 9, characterized in that, The energy storage module is electrically connected to the power motor that transports it through the energy storage converter, wherein the energy storage module transmits electrical energy to the power motor through the energy storage converter.

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