A marine wind farm energy storage platform, energy storage system and fire fighting method

Abstract

The application discloses a kind of offshore wind farm energy storage platform, energy storage system and fire-fighting method in the field of offshore energy storage, including jacket and first platform, second platform and third platform on jacket, jacket is installed on seabed to support the three platforms thereon, the second platform is above the first platform, the third platform is above the second platform;Several prefabricated cabins integrated with energy storage equipment are symmetrically arranged on the second platform;Maintenance equipment is arranged on the first platform and the cable of the prefabricated cabin connected with wind turbine;The third platform is used for receiving materials or personnel transported by helicopter.The offshore wind farm energy storage platform provided by the application is divided into three-layer structure, the prefabricated cabin is arranged in the second layer, the energy storage cabin reduces offshore operation process, reduces offshore operation cost and risk, the independent energy storage platform is isolated from other equipment on offshore wind farm, avoids affecting the operation of other equipment when fire safety accident occurs, reduces the risk of large-area accident.

Description

Technical Field

[0001] This invention relates to the field of offshore energy storage, and more particularly to an offshore wind farm energy storage platform and fire-fighting method. Background Technology

[0002] Energy storage systems are playing an increasingly important role in the development of offshore wind power. With their advantages of rapid deployment, high reliability, strong weather resistance, and easy expansion, they have become the preferred solution for mitigating fluctuations, improving grid integration, and supporting the power grid. As offshore wind power becomes more deep-sea, large-capacity, and integrated, offshore wind energy storage is increasingly moving towards the open sea, shifting from centralized onshore systems to offshore systems, offering faster response and saving shoreline resources. Currently, offshore solutions involve distributed installation on the turbine side or centralized installation within substations. Distributed installation on the turbine side presents challenges due to the large size of the battery module cabinets, limited space for equipment installation on the turbine tower, long construction cycles for individual tower installations, and significant fire safety hazards. Centralized installation within offshore substations occupies a large space, has high overall costs, and the close proximity of the battery system equipment to the primary and secondary equipment of the substation results in high safety costs and lower safety. Summary of the Invention

[0003] The purpose of this invention is to provide an energy storage platform, energy storage system, and fire-fighting method for offshore wind farms. By setting up an independent energy storage platform, the operation of other equipment can be avoided in the event of a fire safety accident involving the energy storage equipment, thereby reducing the risk of large-scale accidents.

[0004] To solve the above technical problems, the following technical solution is adopted: In a first aspect, the present invention provides an offshore wind farm energy storage platform, including a jacket and a first platform, a second platform and a third platform on the jacket, the jacket being installed on the seabed to support the three platforms thereon, the second platform being located above the first platform, and the third platform being located above the second platform; The second platform has several prefabricated cabins symmetrically arranged with integrated energy storage devices; Maintenance equipment and cables connecting the prefabricated cabin to the wind turbine are arranged on the first platform; The third platform is used to receive goods or personnel transported by helicopter.

[0005] Optionally, the prefabricated compartment includes an energy storage battery compartment and a PCS energy storage converter equipment compartment.

[0006] Optionally, the second platform is divided into four areas, which are symmetrical about the center of the second platform. One area is used to install the PCS energy storage converter equipment compartment, and the other three areas are used to install the energy storage battery compartment.

[0007] Optionally, the four areas are provided with mounting bases for installing the energy storage battery compartment and the PCS energy storage converter equipment compartment, and the mounting bases are pre-embedded with corresponding connecting devices.

[0008] Optionally, two third platforms are provided, spaced apart and symmetrically arranged with respect to the center line of the second platform. Each third platform is equipped with a hoisting device for hoisting materials onto the second platform.

[0009] Optionally, a seawater fire-fighting device is installed at the center of the second platform. The seawater fire-fighting device includes a water tank, a high-pressure nozzle on the water tank, and a water pump. The water pump is equipped with a water pipe that extends into the sea, and the water pump pumps seawater to the water tank. High-pressure nozzles are used to spray water from the water tank onto the prefabricated cabin; The second platform is equipped with platform sensors for detecting fires on the platform.

[0010] Optionally, four high-pressure nozzles are provided, symmetrically arranged on the water tank, and a rotating device for controlling the direction of the high-pressure nozzles is also provided between the high-pressure nozzles and the water tank.

[0011] Optionally, the prefabricated cabin is equipped with a prefabricated cabin sensor for detecting fire inside the prefabricated cabin and a fire extinguishing device for controlling the fire, and the second platform is equipped with a platform sensor for detecting fire on the second platform.

[0012] In a second aspect, the present invention provides an offshore wind farm energy storage system, including the offshore wind farm energy storage platform described in the first aspect.

[0013] Thirdly, the present invention provides a fire-fighting method for offshore wind farms, wherein the fire-fighting method is implemented through the offshore wind farm energy storage platform described in the first aspect, and includes the following steps: When the collected value of the prefabricated cabin sensor reaches the first preset value, the fire extinguishing device in the corresponding prefabricated cabin is activated to extinguish the fire in the prefabricated cabin. When the value collected by the platform sensor reaches the second preset value or the value collected by the prefabricated cabin sensor reaches the third preset value, the seawater fire-fighting device is activated to extinguish the fire.

[0014] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: 1. The offshore wind farm energy storage platform provided by the present invention has a three-layer structure. The prefabricated cabin for energy storage is set in the second layer, and the energy storage equipment is integrated in the energy storage cabin, which reduces the cost and risk of offshore operations. The independent energy storage platform is isolated from the booster station and wind turbine equipment on the offshore wind farm, so as to avoid affecting the operation of other equipment when the energy storage equipment has a fire safety accident, and reduce the risk of large-scale accidents.

[0015] 2. The offshore wind farm energy storage platform provided by this invention includes a seawater fire suppression system on the second platform. In the event of a fire in the prefabricated pods, the zoned arrangement of the prefabricated pods reduces the spread of fire to areas not yet affected by the fire. Furthermore, all high-pressure nozzles can be rotated to target the fire area, further preventing the fire from spreading to other areas, reducing losses, and improving safety. On the second platform, the prefabricated pods are symmetrically arranged, with the seawater fire suppression system positioned centrally to avoid the risk of platform tilting and improve platform stability. Additionally, the water tank located at the center can store seawater, further ensuring platform stability. Attached Figure Description

[0016] Figure 1 This is a side view of the energy storage platform in an embodiment of the present invention; Figure 2 This is a schematic diagram of the overall structure of the energy storage platform in an embodiment of the present invention; Figure 3 This is a schematic diagram of the second platform structure in an embodiment of the present invention; Figure 4 This is a schematic diagram of the seawater fire-fighting device in an embodiment of the present invention; Figure 5 This is a schematic diagram of the second platform region division in an embodiment of the present invention; Figure 6 This is a flowchart of the fire-fighting method in an embodiment of the present invention.

[0017] Explanation of reference numerals in the attached figures: 1. First platform; 2. Second platform; 21. First area; 22. Second area; 23. Third area; 3. Third platform; 4. Jacket frame; 5. Precast cabin; 51. PCS energy storage converter equipment cabin; 52. Energy storage battery cabin; 6. Seawater fire fighting equipment; 61. Water tank; 62. High-pressure sprinkler head; 63. Water pump; 64. Water pipe. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use.

[0019] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] Example 1

[0021] This embodiment provides an offshore wind farm energy storage platform, including a jacket 4 and a first platform 1, a second platform 2, and a third platform 3 on the jacket 4. The jacket 4 is installed in the sea, the first platform 1 is installed on the jacket 4, the second platform 2 is installed on the first platform 1 via support columns, and the third platform 3 is installed on the second platform 2 via support columns.

[0022] Several prefabricated compartments 5 for energy storage are symmetrically arranged on the second platform 2. The first platform 1 has cables for the prefabricated compartments 5, as well as cables connecting the prefabricated compartments 5 to the wind turbine.

[0023] The third platform 3 has two locations, which facilitates the transportation of personnel and materials later on.

[0024] like Figure 1 , Figure 3As shown, escape equipment and maintenance equipment are installed on the first platform 1. The main energy storage equipment is installed on the second platform 2. The main equipment of the offshore wind power energy storage system is integrated into the prefabricated cabin 5, which includes an energy storage battery cabin 52 and a PCS energy storage converter equipment cabin 51. The energy storage battery cabin 52 and the PCS energy storage converter equipment cabin 51 are manufactured and assembled on land, and then transported to the second platform 2 by helicopter. They are symmetrically installed on the second platform 2, and the prefabricated cabins 5 are connected by cables to realize energy transmission and storage.

[0025] During installation, the jacket structure 4 is first installed in the selected sea area. Then, the first platform 1 and the second platform 2 are installed sequentially from bottom to top. After the second platform 2 is installed, the prefabricated cabin 5 is transported to the second platform 2 by helicopter for installation. During the installation process, symmetrical installation is carried out, that is, one cabin is installed first on each side (top, bottom, left, and right), and then the second cabin is installed on each side, and so on, to ensure that there is no risk of the platform tilting. After the prefabricated cabins 5 are installed, the cables between the prefabricated cabins 5 are arranged and connected. Then, the third platform 3 is installed, and finally, the energy storage system is tested. Stairs or elevators are provided between the first platform 1 and the second platform 2, and between the second platform 2 and the third platform 3, to facilitate the transfer of personnel and goods.

[0026] There are two third platforms 3, which are symmetrically arranged with respect to the center line of the second platform 2. The third platform 3 is equipped with hoisting equipment, which can be used to hoist large equipment or equipment that is inconvenient to move by stairs or elevators to the second platform 2, or to hoist equipment from the second platform 2 to the third platform 3 for equipment (prefabricated cabin) replacement.

[0027] like Figure 1 , Figure 3 , Figure 5 As shown, the second platform 2 is divided into four regions, symmetrically distributed around the center of the second platform 2. These regions are designated as Region 21, Region 22, Region 23, and Region 24. Region 21 contains several PCS energy storage converter equipment compartments 51, while Regions 22, 23, and 24 each contain several energy storage battery compartments 52. Region 23 is opposite to Region 21, and the weight of the energy storage battery compartments 52 in Region 23 is similar to that of the PCS energy storage converter equipment compartments 51 in Region 21. Regions 22 and 23 contain the same energy storage battery compartments 52. This ensures the stability of the second platform 2.

[0028] In the first area 21, there is a mounting base for installing the PCS energy storage converter equipment compartment 51. In the other three areas, there are mounting bases for installing the energy storage battery compartment 52. Corresponding cables are pre-embedded under the mounting bases. The cables connect the energy storage battery compartment 52 and the PCS energy storage converter equipment compartment 51 to realize the connection between the prefabricated compartments 5.

[0029] The PCS energy storage converter equipment compartment 51 is connected to the wind turbine via cables, which are led out from the first platform 1 and connected to the wind turbine.

[0030] In some embodiments, to ensure the safety of the prefabricated cabin 5, prefabricated cabin sensors for detecting fire and fire extinguishing devices for extinguishing fire are installed inside the prefabricated cabin 5. The fire extinguishing devices are electrical-specific fire extinguishing devices, such as dry powder fire extinguishers or carbon dioxide fire extinguishers, etc., determined according to actual conditions. These are existing technologies and will not be elaborated upon in this embodiment. The prefabricated cabin sensors can be one or more combinations of smoke alarm sensors, temperature sensors, and camera devices; their structure and principles will not be elaborated upon in this embodiment. The fire situation inside the prefabricated cabin 5 is collected by the prefabricated cabin sensors, and the corresponding fire extinguishing devices are activated to extinguish the fire based on the collected fire situation.

[0031] like Figure 3 , Figure 4 As shown, in some embodiments, to ensure equipment safety, a seawater fire suppression system 6 is installed at the center of the second platform 2, and platform sensors for detecting fire are installed on the second platform 2. The seawater fire suppression system 6 includes a water tank 61, high-pressure nozzles 62 on the water tank 61, and a water pump 63. The water pump 63 is connected to a water pipe 64, which extends into the sea. The water pump 63 pumps seawater into the water tank 61, and the high-pressure nozzles 62 spray water from the water tank 61 towards the prefabricated cabin 5. The platform sensors can be one or more of smoke alarm sensors, temperature sensors, and camera devices, and multiple sensors are arranged to determine the location of the fire on the second platform 2. The structure and principle will not be described in detail in this embodiment. The platform sensors collect the fire status and location of the prefabricated cabin 5 on the platform, and the high-pressure nozzles 62 activate to extinguish the fire based on the collected fire status on the platform.

[0032] The water tank 61 is located at the center of the second platform 2. In the absence of a fire, the water pump 63 can replenish the water tank 61 with seawater through the water pipe 64. The seawater stored in the water tank 61 can act as a stabilizer for the energy storage platform when the weather is severe at sea, thereby improving the stability of the platform.

[0033] like Figure 4 , Figure 5As shown, four high-pressure sprinklers 62 are symmetrically arranged on the water tank 61, each facing one of the four areas of the second platform 2. A rotating device is also provided between the high-pressure sprinklers 62 and the water tank 61. This rotating device drives the rotation of the high-pressure sprinklers 62, thereby controlling the spray direction of the high-pressure sprinklers 62. In the event of a fire in one of the areas, all four high-pressure sprinklers 62 can be turned to spray water towards that area. The rotating device can be a combination of a motor or telescopic mechanism with transmission gears or other transmission mechanisms to achieve rotation. In short, it only needs to satisfy the need to adjust the spray direction of the high-pressure sprinklers 62. The rotating device is existing technology and will not be described in detail in this embodiment. The rotating device adjusts the direction of the high-pressure sprinklers 62 according to the fire location collected by the platform sensors.

[0034] The offshore wind farm energy storage platform provided in this embodiment integrates the main energy storage equipment of the offshore wind power energy storage system within a prefabricated cabin 5. The prefabricated cabin 5 is assembled, and the internal equipment is wired and tested in an onshore factory, ensuring equipment reliability and avoiding the impact of the harsh offshore environment of high humidity and high salt spray, thus improving system quality. The prefabricated energy storage cabin can be transported to the site by sea as a whole and hoisted onto the second platform 2 for installation in one go. At sea, the energy storage platform and its energy storage system only require platform docking and main cable wiring to complete deployment, shortening the offshore construction cycle and reducing the cost and safety risks of offshore operations. The independent platform layout physically isolates the energy storage system from the booster station and wind turbine equipment. Even in the event of a fire safety accident in the energy storage system, it will not be affected by the operation of other core equipment in the wind farm, reducing the risk of large-scale accidents. Furthermore, fire-fighting devices are installed in the second platform 2 and the prefabricated cabin 5 to minimize equipment damage in the event of a fire safety accident. Independent energy storage platforms can be flexibly deployed in offshore wind farms to achieve localized energy storage deployment. Compared with onshore energy storage, they have a faster response speed, can better smooth out the output fluctuations of offshore wind power, and improve the absorption capacity of wind power.

[0035] Example 2

[0036] This embodiment provides an offshore wind farm energy storage system based on Embodiment 1, including the offshore wind farm energy storage platform provided in the embodiment. The energy storage equipment is integrated in the prefabricated cabin 5, which facilitates transportation and installation and reduces the risks and costs of offshore operations.

[0037] Example 3

[0038] like Figure 1 , Figure 3 , Figure 6 As shown, this embodiment provides a fire-fighting method for offshore wind farms, implemented through the offshore wind farm energy storage platform provided in Embodiment 1, including the following steps: When the sensor readings of the prefabricated cabin reach the first preset value, the fire extinguishing device in the corresponding prefabricated cabin 5 is activated to extinguish the fire in the prefabricated cabin 5. When the fire extinguishing device in the prefabricated cabin 5 fails to control the fire, and the collected value of the platform sensor reaches the second preset value or the collected value of the prefabricated cabin sensor reaches the third preset value, the seawater fire extinguishing device 6 is activated to extinguish the fire.

[0039] The platform's monitoring system determines the location of the fire, drives the rotating device, and directs all 62 high-pressure nozzles at the fire location to extinguish it.

[0040] The collected values ​​of the aforementioned prefabricated sensors can be the temperature collected by the temperature sensor, combined with the smoke concentration collected by the smoke alarm, or combined with the image collected by the camera device. The collected values ​​of the platform sensors can be the image collected by the camera sensor, based on which the location and state of the fire are determined. They can also be the smoke alarm and the temperature sensor located outside the prefabricated compartment 5.

[0041] In the event of a fire in the aforementioned prefabricated cabin 5, an alarm will be sent to the control terminal to notify personnel to handle the situation promptly.

[0042] The fire extinguishing device and seawater fire-fighting device 6 are activated based on the sensor data to monitor fire accidents on the prefabricated cabin 5 and platform in real time and prevent the spread of fire accidents.

[0043] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An energy storage platform for offshore wind farms, characterized in that, Includes a jacket and a first platform, a second platform and a third platform on the jacket, the jacket being installed on the seabed to support the three platforms thereon, the second platform being located above the first platform and the third platform being located above the second platform; The second platform has several prefabricated cabins symmetrically arranged with integrated energy storage devices; Maintenance equipment and cables connecting the prefabricated cabin to the wind turbine are arranged on the first platform; The third platform is used to receive goods or personnel transported by helicopter.

2. The offshore wind farm energy storage platform according to claim 1, characterized in that, The prefabricated compartment includes an energy storage battery compartment and a PCS energy storage converter equipment compartment.

3. The offshore wind farm energy storage platform according to claim 2, characterized in that, The second platform is divided into four areas, which are symmetrical about the center of the second platform. One area is used to install the PCS energy storage converter equipment compartment, and the other three areas are used to install the energy storage battery compartment.

4. The offshore wind farm energy storage platform according to claim 3, characterized in that, The four areas are equipped with mounting bases for installing the energy storage battery compartment and the PCS energy storage converter equipment compartment, and the mounting bases are pre-embedded with corresponding connection devices.

5. The offshore wind farm energy storage platform according to claim 1, characterized in that, There are two third platforms, which are spaced apart and arranged symmetrically with respect to the center line of the second platform. Each third platform is equipped with a hoisting device for hoisting materials onto the second platform.

6. The offshore wind farm energy storage platform according to claim 1, characterized in that, The second platform is equipped with a seawater fire-fighting device at its center. The seawater fire-fighting device includes a water tank, a high-pressure nozzle on the water tank, and a water pump. The water pump is equipped with a water pipe that extends into the sea, and the water pump pumps seawater to the water tank. High-pressure nozzles are used to spray water from the water tank onto the prefabricated cabin; The second platform is equipped with platform sensors for detecting fires on the platform.

7. The offshore wind farm energy storage platform according to claim 6, characterized in that, Four high-pressure nozzles are provided and symmetrically arranged on the water tank. A rotating device for controlling the direction of the high-pressure nozzles is also provided between the high-pressure nozzles and the water tank.

8. The offshore wind farm energy storage platform according to claim 6, characterized in that, The prefabricated cabin is equipped with a prefabricated cabin sensor for detecting fire inside the prefabricated cabin and a fire extinguishing device for controlling the fire. The second platform is equipped with a platform sensor for detecting fire on the second platform.

9. An offshore wind farm energy storage system, characterized in that, Includes the offshore wind farm energy storage platform as described in any one of claims 1-8.

10. A fire-fighting method for offshore wind farms, characterized in that, The fire-fighting method is implemented through the offshore wind farm energy storage platform as described in claim 8, and includes the following steps: When the collected value of the prefabricated cabin sensor reaches the first preset value, the fire extinguishing device in the corresponding prefabricated cabin is activated to extinguish the fire in the prefabricated cabin. When the value collected by the platform sensor reaches the second preset value or the value collected by the prefabricated cabin sensor reaches the third preset value, the seawater fire-fighting device is activated to extinguish the fire.

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