Tension leg floating type wind power platform control system

Abstract

The invention discloses a tension leg floating type wind power platform control system which comprises a central control mechanism, an environment monitoring mechanism, a ballast monitoring mechanism and a ballast control mechanism. The central control mechanism comprises an acquisition assembly and a data service assembly, and the acquisition assembly is in communication connection with the data service assembly; the environment monitoring mechanism is used for monitoring the marine environment and the motion state of the platform; the ballast control mechanism comprises a load discharge pump, a ballast tank, an electro-hydraulic valve and a lower floating body; the electro-hydraulic valve is arranged between the load discharge pump and the ballast tank; the ballast monitoring mechanism is used for monitoring the pressure of a load discharging pump, the liquid level of a ballast tank and the sea discharging flow; wherein the environment monitoring mechanism and the ballast monitoring mechanism are in communication connection with the collection assembly, the electro-hydraulic valve is in communication connection with the data service assembly, and the tension leg floating type wind power platform control system solves the problem that an existing tension leg floating type wind power platform is poor in safety in the installation and use process.

Description

Technical Field

[0001] The present invention belongs to the technical field of offshore floating wind power engineering, and particularly relates to a control system for a tension leg floating wind power platform. Background Art

[0002] The marine environment is complex and harsh. Factors such as wind, waves, ocean currents, sea ice, and tides can all affect the structure of the offshore floating wind power platform. For the current tension leg platform, due to the installation water depth, environmental monitoring during installation and the process of taking the right position, as well as the liquid level monitoring of the ballast tank in the cabin, will directly affect the safety of the platform installation and subsequent production. In addition, adverse factors such as environmental corrosion, marine organism attachment, material aging, and fatigue damage will also lead to the attenuation of the overall resistance of the offshore floating wind power platform, affecting its safety.

[0003] Therefore, there is an urgent need to design a control system for a tension leg floating wind power platform to solve the above-mentioned problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a control system for a tension leg floating wind power platform, which has the advantage of global safety regulation in a complex marine environment and solves the problem of poor safety during the installation and use of the existing tension leg floating wind power platform.

[0005] To achieve the above purpose, the specific technical solution of a control system for a tension leg floating wind power platform of the present invention is as follows: A control system for a tension leg floating wind power platform includes: a central control mechanism, an environmental monitoring mechanism, a ballast monitoring mechanism, and a ballast control mechanism; The central control mechanism includes a collection component and a data service component, and the collection component is communicatively connected to the data service component; The environmental monitoring mechanism is used to monitor the marine environment and the motion state of the platform; The ballast control mechanism includes a discharge pump, a ballast tank, an electro-hydraulic valve, and a lower floating body. The electro-hydraulic valve is arranged between the discharge pump and the ballast tank and is used to control the pressure of the discharge pump, the liquid level of the ballast tank, and the discharge flow rate to the sea; The ballast monitoring mechanism is used to monitor the pressure of the discharge pump, the liquid level of the ballast tank, and the discharge flow rate to the sea; Wherein, the environmental monitoring mechanism and the ballast monitoring mechanism are communicatively connected to the collection component, and the electro-hydraulic valve is communicatively connected to the data service component.

[0006] Furthermore, the environmental monitoring mechanism includes a meteorological monitoring component for monitoring meteorological parameters of the environment, a marine hydrological monitoring component for monitoring hydrological parameters of the ocean, and a platform attitude monitoring component for monitoring the motion state of the platform.

[0007] Further, the meteorological monitoring component includes a barometric pressure sensor, a temperature and humidity sensor, and a wind speed and direction sensor, and the barometric pressure sensor, the temperature and humidity sensor, and the wind speed and direction sensor are all communicatively connected to the acquisition component.

[0008] Further, the ocean hydrological monitoring component includes a wave height sensor for monitoring ocean wave height and wave direction, and the wave height sensor is communicatively connected to the acquisition component.

[0009] Further, the platform attitude monitoring component includes a Beidou global positioning unit and a motion reference unit, and the Beidou global positioning unit and the motion reference unit are both communicatively connected to the acquisition component.

[0010] Further, the ballast monitoring mechanism includes a pressure sensor, a liquid level sensor, and a flow sensor, and the pressure sensor, the liquid level sensor, and the flow sensor are all communicatively connected to the acquisition component.

[0011] Further, the control system of the tension leg floating wind power platform further includes a structural stress monitoring mechanism for monitoring the state parameters of the platform's lower floating body structure and a mooring monitoring mechanism for monitoring the mooring state parameters of the platform. Among them, the structural stress monitoring mechanism and the mooring monitoring mechanism are both communicatively connected to the acquisition component.

[0012] Further, the data service component is configured to perform fusion analysis based on the data uploaded by the environmental monitoring mechanism, the ballast monitoring mechanism, the structural stress monitoring mechanism, and the mooring monitoring mechanism, generate a ballast adjustment instruction and send it to the ballast control mechanism, and the ballast control mechanism responds to the ballast adjustment instruction and dynamically adjusts the liquid level of the ballast tank.

[0013] Further, the control system of the tension leg floating wind power platform further includes a video monitoring mechanism, and the video monitoring mechanism is communicatively connected to the acquisition component.

[0014] Further, the control system of the tension leg floating wind power platform further includes a terminal device, and the terminal device is electrically connected to the acquisition component and the data service component for remotely monitoring the state of the platform.

[0015] The control system of the tension leg floating wind power platform of the present invention has the following advantages: 1. Provide technical support during the platform installation, positioning, and operation production process of the tension leg floating wind power platform, ensure the smooth implementation and commissioning of each facility during the offshore installation, and shorten the installation and positioning time by 42% (the traditional system requires 48 hours, and this application only requires 28 hours); 2. The platform overturning rate under typhoon conditions is reduced to 2.7%; 3. The fatigue damage of the structural stress concentration area is reduced, improving the service life of the platform, ensuring the facility safety and stable operation of each system in the marine environment, platform motion, pressure monitoring, liquid level monitoring, flow monitoring and electro-hydraulic valve control after the platform is put into production, and providing a higher safety guarantee for the inspection and system maintenance during the later operation process.

[0016] 4. It realizes the all-round real-time monitoring of the production operation and motion of the platform on the platform of the tension leg floating wind power platform and at the equipment terminal, providing an intelligent monitoring guarantee for production personnel. Description of the Drawings

[0017] Figure 1 It is one of the structural schematic diagrams of the control system of the tension leg floating wind power platform of the present invention; Figure 2 It is another structural schematic diagram of the control system of the tension leg floating wind power platform of the present invention; Figure 3 It is the structural schematic diagram of the control system of the tension leg floating wind power platform of the present invention.

[0018] Explanation of the marks in the figure: 1. Central control mechanism; 11. Acquisition component; 12. Data service component; 2. Environment monitoring mechanism; 21. Meteorological monitoring component; 211. Air pressure sensor; 212. Temperature and humidity sensor; 213. Wind speed and direction sensor; 22. Marine hydrological monitoring component; 221. Wave height sensor; 23. Platform attitude monitoring component; 231. Beidou global positioning unit; 232. Motion reference unit; 3. Ballast monitoring mechanism; 31. Pressure sensor; 32. Liquid level sensor; 33. Flow sensor; 4. Ballast control mechanism; 41. Discharge pump; 42. Ballast tank; 43. Electro-hydraulic valve; 44. Lower floating body; 5. Structural stress monitoring mechanism; 6. Mooring monitoring mechanism; 7. Video monitoring mechanism; 8. Terminal device; 9. Alarm mechanism. Detailed Embodiments

[0019] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0020] Those skilled in the art can understand that although some embodiments herein include certain features included in other embodiments rather than other features, the combination of features of different embodiments means that it is within the scope of the present invention and forms different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.

[0021] The following will refer to Figures 1 to 3 A tension leg floating wind power platform control system of the present invention is described as including: a central control mechanism 1, an environmental monitoring mechanism 2, a ballast monitoring mechanism 3, and a ballast control mechanism 4; The central control mechanism 1 includes an acquisition component 11 and a data service component 12, and the acquisition component 11 is communicatively connected to the data service component 12; The environmental monitoring mechanism 2 is used to monitor the marine environment and the motion state of the platform; The ballast control mechanism 4 includes a discharge pump 41, a ballast tank 42, an electro-hydraulic valve 43, and a lower floating body 44. The electro-hydraulic valve 43 is arranged between the discharge pump 41 and the ballast tank 42 and is used to control the pressure of the discharge pump 41, the liquid level of the ballast tank 42, and the discharge flow rate to the sea; The ballast monitoring mechanism 3 is used to monitor the pressure of the discharge pump 41, the liquid level of the ballast tank 42, and the discharge flow rate to the sea; Wherein, the environmental monitoring mechanism 2 and the ballast monitoring mechanism 3 are communicatively connected to the acquisition component 11, and the electro-hydraulic valve 43 is communicatively connected to the data service component 12.

[0022] In this embodiment, by setting the central control mechanism 1, the environmental monitoring mechanism 2, the ballast monitoring mechanism 3, and the ballast control mechanism 4, the various mechanisms act together, and through the centralized monitoring and transmission of the central control mechanism 1, the coordinated control of each mechanism is realized, and the safety of the system is improved.

[0023] Specifically, the acquisition component 11 receives real-time marine environment data, the motion state of the platform, as well as the pressure of the discharge pump 41, the liquid level of the ballast tank 42, and the discharge flow rate to the sea. After the data service component 12 analyzes the data received by the acquisition component 11, a ballast adjustment instruction is generated, and the ballast control mechanism 4 responds to the ballast adjustment instruction to dynamically control the on-off of the electro-hydraulic valve 43 to adjust the liquid level of the ballast tank 42.

[0024] Specifically, the data service component 12 includes a dynamic adjustment unit and an implementation decision-making unit. The dynamic adjustment unit is trained to predict ballast adjustment parameters according to the mapping relationship between historical environment data and the platform's motion response. The implementation decision-making unit compares the predicted ballast adjustment parameters with the actually monitored data and generates an error compensation instruction to the ballast control mechanism 4.

[0025] Specifically, the ballast control mechanism 4 further includes a lift pump for inputting seawater into the ballast tank 42.

[0026] Specifically, the ballast control mechanism 4 adjusts the liquid level of the ballast tank 42 to simultaneously meet the following two points: 1. Maintain the outlet pipeline pressure of the discharge pump 41 between the minimum pressure and the maximum pressure; 2. Ensure that the difference between the sea discharge flow rate of the discharge pump 41 and the lift flow rate of the lift pump does not exceed the capacity of the ballast tank 42.

[0027] Furthermore, the environmental monitoring mechanism 2 includes a meteorological monitoring component 21 for monitoring meteorological parameters of the environment, a marine hydrographic monitoring component 22 for monitoring hydrographic parameters of the ocean, and a platform attitude monitoring component 23 for monitoring the motion state of the platform.

[0028] Furthermore, the environmental monitoring mechanism 2 also includes an uninterruptible power supply component for power supply. The uninterruptible power supply is 10 kVA and 220 V AC voltage, so as to ensure effective transmission and monitoring of each mechanism and equipment terminal during typhoons.

[0029] Specifically, the environmental monitoring system conducts interactive data transmission with the equipment terminal through network communication using the TCP / IP method to facilitate the sharing and utilization of monitoring data.

[0030] Specifically, the environmental monitoring mechanism 2 is an important technical means to ensure the safety of the platform during offshore installation and positioning operations. It lies in real-time monitoring of the motion state of the platform, storing data such as hydrographic parameters and platform motion under normal and extreme working conditions to verify whether the design of the platform floating body structure is reasonable, and dynamically adjusting the model.

[0031] Furthermore, the meteorological monitoring component 21 includes a barometric pressure sensor 211, a temperature and humidity sensor 212, and a wind speed and direction sensor 213. The barometric pressure sensor 211, the temperature and humidity sensor 212, and the wind speed and direction sensor 213 are all communicatively connected to the acquisition component 11.

[0032] Furthermore, the marine hydrographic monitoring component 22 includes a wave height sensor 221 for monitoring ocean wave height and wave direction. The wave height sensor 221 is communicatively connected to the acquisition component 11.

[0033] Specifically, the barometric pressure sensor 211, the temperature and humidity sensor 212, the wind speed and direction sensor 213, and the wave height sensor 221 unify the time reference, and upload the data of each sensor to the acquisition component 11 and then conduct fusion analysis through the data service component 12.

[0034] Further, the platform attitude monitoring component 23 includes a Beidou global positioning unit 231 and a motion reference unit 232, and both the Beidou global positioning unit 231 and the motion reference unit 232 are communicatively connected to the acquisition component 11.

[0035] Specifically, the wave height sensor 221 and the motion reference unit 232 are fiber-optically connected to the acquisition component 11.

[0036] Specifically, the motion reference unit 232 is a motion reference unit 232 with six degrees of freedom of motion.

[0037] Further, the ballast monitoring mechanism 3 includes a pressure sensor 31, a liquid level sensor 32, and a flow sensor 33, and both the pressure sensor 31, the liquid level sensor 32, and the flow sensor 33 are communicatively connected to the acquisition component 11.

[0038] Further, the control system of the tension leg floating wind power platform further includes a structural stress monitoring mechanism 5 for monitoring the structural state parameters of the lower floating body 44 of the platform and a mooring monitoring mechanism 6 for monitoring the mooring state parameters of the platform. Among them, both the structural stress monitoring mechanism 5 and the mooring monitoring mechanism 6 are communicatively connected to the acquisition component 11.

[0039] Specifically, the structural stress monitoring mechanism 5 obtains the dynamic bending moment and fatigue damage value at the connection of the lower floating body 44 in real time, and the mooring monitoring mechanism 6 uses a mooring tension sensor to monitor the tension and angle of the anchor chain.

[0040] Specifically, the structural stress monitoring mechanism 5 includes stress-strain gauges, and the stress-strain gauges are installed at the connection of the lower floating body 44 and the tension leg for monitoring the dynamic bending moment, shear force, and cumulative fatigue damage value of the lower floating body 44.

[0041] Preferably, the acquisition component 11 is a programmable logic controller (PLC) acquisition component.

[0042] Among them, the mooring tension sensor and the stress-strain gauges input signals through 4 - 20mA into the PLC acquisition component.

[0043] Further, the data service component 12 is configured to perform fusion analysis based on the data uploaded by the environmental monitoring mechanism 2, the ballast monitoring mechanism 3, the structural stress monitoring mechanism 5, and the mooring monitoring mechanism 6, generate a ballast adjustment instruction and send it to the ballast control mechanism 4, and the ballast control mechanism 4 responds to the ballast adjustment instruction and dynamically adjusts the liquid level of the ballast tank 42.

[0044] Specifically, the data service component 12 performs the following steps: Unify the time reference of the data of each sensor; Establish the transfer function between the high-frequency wave spectrum and the bending moment of the lower floating body 44:

[0045] Wherein, is the bending moment of the lower floating body 44, is the transfer coefficient; is the transfer function, is the wave spectrum function, is the frequency variable.

[0046] Dynamic adjustment model training: Use the LSTM network to learn the mapping relationship between historical environmental data and ballast adjustment amount.

[0047] Furthermore, the motion reference unit 232 monitors the platform's roll angle, sets the wave height threshold and the platform's roll angle threshold. When the wave height is greater than the wave height threshold and the platform's roll angle is greater than the platform's roll angle threshold, the data service component 12 combines the data fed back by the structural stress monitoring mechanism 5 and preferentially adjusts the ballast tank 42 in the stress concentration area.

[0048] Furthermore, the control system of the tension-leg floating wind power platform further includes a video monitoring mechanism 7, and the video monitoring mechanism 7 is communicatively connected to the acquisition component 11.

[0049] Specifically, the video monitoring component is arranged in the area of the mooring chain interface and the electro-hydraulic valve 43 of the ballast tank 42. The video monitoring component tracks the slack state of the anchor chain and the opening and closing of the electro-hydraulic valve 43 in real time and feeds back to the acquisition component 11.

[0050] Specifically, under typhoon conditions, the system operation is maintained by an uninterruptible power supply; if the Beidou positioning unit detects that the platform drift distance > the threshold value of the platform drift distance, the typhoon mode is triggered; the ballast emergency discharge mode is started, all electro-hydraulic valves 43 are opened to the maximum flow rate, and at the same time the mooring cables are slackened to the preset safety tension. The video monitoring mechanism 7 tracks the slack state of the anchor chain in real time and feeds back to the central control system for closed-loop verification.

[0051] Furthermore, the control system of the tension-leg floating wind power platform further includes a terminal device 8, and the terminal device 8 is electrically connected to the acquisition component 11 and the data service component 12 for remotely monitoring the state of the platform.

[0052] Furthermore, the control system of the tension-leg floating wind power platform further includes an alarm mechanism 9 for sending out alarm signals.

[0053] Specifically, when the alarm signal is issued, the system may synchronously start the emergency response program. Under typhoon conditions, if the Beidou global positioning unit 231 detects that the platform drift distance exceeds the threshold, the alarm mechanism 9 triggers the "typhoon mode", and at the same time, the ballast control mechanism 4 starts emergency drainage, relaxing the mooring cable to the safe tension. The alarm signal can be remotely pushed through the terminal device 8 (such as the monitoring center computer, mobile terminal), realizing the dual guarantee of "local alarm + remote early warning", which is convenient for the operator to handle in time.

[0054] The control process of this embodiment includes: unifying the time reference of the data of each sensor; the dynamic adjustment unit predicts the ballast adjustment parameters based on the historical data mapping relationship; the real-time decision-making unit compares the predicted value with the actual monitored value and generates an error compensation instruction. The ballast control mechanism 4 responds to the instruction and meets the dual constraints: the pressure of the discharge pump 41 ∈ [P min , P max ; the difference between the discharge flow and the lifting flow ≤ the capacity of the ballast tank 42.

[0055] Obviously, the above embodiments of the present invention are only examples for clearly explaining the present invention, and are not intended to limit the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A control system for a tension leg floating wind power platform, characterized in that, Including: A central control mechanism, an environmental monitoring mechanism, a ballast monitoring mechanism, and a ballast control mechanism; The central control mechanism includes a collection component and a data service component, and the collection component is communicatively connected to the data service component; The environmental monitoring mechanism is used to monitor the marine environment and the motion state of the platform; The ballast control mechanism includes a discharge pump, a ballast tank, an electro-hydraulic valve, and a lower floating body. The electro-hydraulic valve is arranged between the discharge pump and the ballast tank and is used to control the pressure of the discharge pump, the liquid level of the ballast tank, and the discharge flow rate to the sea; The ballast monitoring mechanism is used to monitor the pressure of the discharge pump, the liquid level of the ballast tank, and the discharge flow rate to the sea; Wherein, the environmental monitoring mechanism and the ballast monitoring mechanism are communicatively connected to the collection component, and the electro-hydraulic valve is communicatively connected to the data service component.

2. The control system of the tension leg floating wind power platform according to claim 1, wherein The environmental monitoring mechanism includes a meteorological monitoring component for monitoring meteorological parameters of the environment, a marine hydrological monitoring component for monitoring hydrological parameters of the sea, and a platform attitude monitoring component for monitoring the motion state of the platform.

3. The control system of the tension leg floating wind power platform according to claim 2, wherein The meteorological monitoring component includes a barometric pressure sensor, a temperature and humidity sensor, and a wind speed and direction sensor. The barometric pressure sensor, the temperature and humidity sensor, and the wind speed and direction sensor are all communicatively connected to the collection component.

4. The control system of the tension leg floating wind power platform according to claim 2, characterized in that, The marine hydrological monitoring component includes a wave height sensor for monitoring the wave height and wave direction of the sea, and the wave height sensor is communicatively connected to the collection component.

5. The control system of the tension leg floating wind power platform according to claim 2, characterized in that, The platform attitude monitoring component includes a Beidou global positioning unit and a motion reference unit. The Beidou global positioning unit and the motion reference unit are both communicatively connected to the collection component.

6. The control system of the tension leg floating wind power platform according to claim 1, characterized in that, The ballast monitoring mechanism includes a pressure sensor, a liquid level sensor, and a flow sensor. The pressure sensor, the liquid level sensor, and the flow sensor are all communicatively connected to the collection component.

7. The control system of the tension leg floating wind power platform according to claim 1, characterized in that It further includes a structural stress monitoring mechanism for monitoring the structural state parameters of the platform's lower floating body and a mooring monitoring mechanism for monitoring the mooring state parameters of the platform. Wherein, the structural stress monitoring mechanism and the mooring monitoring mechanism are both communicatively connected to the collection component.

8. The control system of the tension leg floating wind power platform according to claim 7, characterized in that, The data service component is configured to perform fusion analysis based on the data uploaded by the environmental monitoring mechanism, the ballast monitoring mechanism, the structural stress monitoring mechanism, and the mooring monitoring mechanism, generate a ballast adjustment instruction and send it to the ballast control mechanism. The ballast control mechanism responds to the ballast adjustment instruction and dynamically adjusts the liquid level of the ballast tank.

9. The control system of the tension leg floating wind power platform according to claim 1, characterized in that, It further includes a video monitoring mechanism, and the video monitoring mechanism is communicatively connected to the collection component.

10. The control system of the tension leg floating wind power platform according to claim 1, characterized in that It further includes a terminal device. The terminal device is electrically connected to the collection component and the data service component and is used for remotely monitoring the state of the platform.

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