A tension leg floating wind platform control system

Abstract

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

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of offshore floating wind power engineering, and particularly relates to a tension leg floating wind power platform control system. BACKGROUND

[0002] The marine environment is complex and harsh, and factors such as wind, sea waves, sea currents, sea ice and tides will all affect the structure of the offshore floating wind power platform. The installation, environmental monitoring and cabin ballast tank liquid level monitoring during the installation of the current tension leg platform will directly affect the safety of the installation and subsequent production of the platform. In addition, adverse factors such as environmental corrosion, marine bio-attachment, material aging and fatigue damage will also cause the overall resistance of the offshore floating wind power platform to attenuate, affecting its safety.

[0003] Therefore, it is urgent to design a tension leg floating wind power platform control system to solve the above-mentioned problems. SUMMARY

[0004] The application aims to provide a tension leg floating wind power platform control system, which has the advantages of global safety regulation in complex marine environments, and solves the problem of poor safety during the installation and use of the current tension leg floating wind power platform.

[0005] To achieve the above-mentioned purpose, the technical scheme of the tension leg floating wind power platform control system is as follows: a tension leg floating wind power platform control system comprises a central control mechanism, an environmental monitoring mechanism, a ballast monitoring mechanism and a ballast control mechanism.

[0006] The central control mechanism comprises an acquisition component and a data service component, and the acquisition component is in communication connection with the data service component.

[0007] The environmental monitoring mechanism is used for monitoring the marine environment and the motion state of the platform.

[0008] The ballast control mechanism comprises a ballast pump, a ballast tank, an electro-hydraulic valve and a submersible body, the electro-hydraulic valve is arranged between the ballast pump and the ballast tank, and is used for controlling the pressure of the ballast pump, the liquid level of the ballast tank and the sea discharge flow.

[0009] The ballast monitoring mechanism is used for monitoring the pressure of the ballast pump, the liquid level of the ballast tank and the sea discharge flow.

[0010] The environmental monitoring mechanism and the ballast monitoring mechanism are in communication connection with the acquisition component, and the electro-hydraulic valve is in communication connection with the data service component.

[0011] Further, the environmental monitoring mechanism comprises a meteorological monitoring assembly for monitoring meteorological parameters of the environment, an ocean hydrological monitoring assembly for monitoring hydrological parameters of the ocean, and a platform attitude monitoring assembly for monitoring the motion state of the platform.

[0012] Further, the meteorological monitoring assembly comprises a barometric pressure sensor, a temperature and humidity sensor, and a wind speed and direction sensor, all of which are in communication connection with the collection assembly.

[0013] Further, the ocean hydrological monitoring assembly comprises a wave height sensor for monitoring wave height and direction of the ocean, which is in communication connection with the collection assembly.

[0014] Further, the platform attitude monitoring assembly comprises a Beidou global positioning unit and a motion reference unit, both of which are in communication connection with the collection assembly.

[0015] Further, the ballast monitoring mechanism comprises a pressure sensor, a liquid level sensor, and a flow sensor, all of which are in communication connection with the collection assembly.

[0016] Further, the tension leg floating wind power platform control system further comprises a structure stress monitoring mechanism for monitoring the state parameters of the platform lower floating body structure, and a mooring monitoring mechanism for monitoring the mooring state parameters of the platform, wherein the structure stress monitoring mechanism and the mooring monitoring mechanism are both in communication connection with the collection assembly.

[0017] Further, the data service assembly is configured to perform fusion analysis based on the data uploaded by the environmental monitoring mechanism, the ballast monitoring mechanism, the structure stress monitoring mechanism and the mooring monitoring mechanism, generate ballast adjustment instructions and send them to the ballast control mechanism, and the ballast control mechanism responds to the ballast adjustment instructions and dynamically adjusts the ballast tank liquid level.

[0018] Further, the tension leg floating wind power platform control system further comprises a video monitoring mechanism, which is in communication connection with the collection assembly.

[0019] Further, the tension leg floating wind power platform control system further comprises a terminal device, which is in electrical connection with the collection assembly and the data service assembly, for remotely monitoring the state of the platform.

[0020] The tension leg floating wind power platform control system of the present application has the following advantages:

[0021] 1. Provide technical support for platform installation, positioning, action production process of tension leg floating wind power platform, ensure the smooth implementation and use of each facility during offshore installation, shorten the installation positioning time by 42% (traditional system needs 48 hours, this application is only 28 hours);

[0022] 2. The overturning rate of the platform under typhoon condition is reduced to 2.7%;

[0023] 3. The fatigue damage of the stress concentration area of the structure is reduced, the service life of the platform is improved, the safety and smooth operation of the facilities in the marine environment, platform motion, pressure monitoring, liquid level monitoring, flow monitoring and electro-hydraulic valve control of each system after the platform is put into production are ensured, and higher safety protection is provided for the inspection and system maintenance in the later operation process.

[0024] 4. Realize the real-time monitoring of the production operation and motion of the platform on the platform and the equipment terminal of the tension leg floating wind power platform, and provide intelligent monitoring protection for the production personnel. BRIEF DESCRIPTION OF DRAWINGS

[0025] Fig. 1 It is one of the tension leg floating wind power platform control system structure principle diagrams of the application;

[0026] Fig. 2 It is the second tension leg floating wind power platform control system structure principle diagram of the application;

[0027] Fig. 3 It is a tension leg floating wind power platform control system structure schematic diagram.

[0028] MARKING DESCRIPTION IN THE DRAWING:

[0029] 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, ocean 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, ballast pump; 42, ballast tank; 43, electro-hydraulic valve; 44, lower float; 5, structural stress monitoring mechanism; 6, mooring monitoring mechanism; 7, video monitoring mechanism; 8, terminal equipment; 9, alarm mechanism. DETAILED DESCRIPTION

[0030] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0031] Those skilled in the art can understand that, although some of the embodiments herein include certain features instead of other features included in other embodiments, the combination of features of different embodiments means to be within the scope of the present application and form different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.

[0032] The following will be described with reference to Figs. 1 to 3 The tension leg floating wind platform control system of the present application comprises a central control mechanism 1, an environment monitoring mechanism 2, a ballast monitoring mechanism 3 and a ballast control mechanism 4.

[0033] The central control mechanism 1 comprises a collection component 11 and a data service component 12, and the collection component 11 is in communication connection with the data service component 12.

[0034] The environment monitoring mechanism 2 is used for monitoring the marine environment and the motion state of the platform.

[0035] The ballast control mechanism 4 comprises a ballast 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 ballast pump 41 and the ballast tank 42, and is used for controlling the pressure of the ballast pump 41, the liquid level of the ballast tank 42 and the sea discharge flow.

[0036] The ballast monitoring mechanism 3 is used for monitoring the pressure of the ballast pump 41, the liquid level of the ballast tank 42 and the sea discharge flow.

[0037] The environment monitoring mechanism 2 and the ballast monitoring mechanism 3 are in communication connection with the collection component 11, and the electro-hydraulic valve 43 is in communication connection with the data service component 12.

[0038] In the embodiment, the central control mechanism 1, the environment monitoring mechanism 2, the ballast monitoring mechanism 3 and the ballast control mechanism 4 are arranged, the mechanisms jointly act on each other, the central control mechanism 1 is used for centralized monitoring and transmission, the coordinated control of the mechanisms is realized, and the safety of the system is improved.

[0039] Specifically, the acquisition component 11 receives real-time marine environment data and platform motion state as well as the pressure of the ballast pump 41, the liquid level of the ballast tank 42 and the sea discharge flow rate, and the data service component 12 analyzes the data received by the acquisition component 11 to generate a ballast adjustment instruction, 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.

[0040] Specifically, the data service component 12 includes a dynamic adjustment unit and an implementation decision unit, the dynamic adjustment unit is trained to predict the ballast adjustment parameter according to the mapping relationship between the historical environment data and the platform motion response, and the implementation decision unit compares the predicted ballast adjustment parameter with the actually monitored data to generate an error compensation instruction to the ballast control mechanism 4.

[0041] Specifically, the ballast control mechanism 4 further includes a lifting pump for inputting seawater into the ballast tank 42.

[0042] Specifically, the ballast control mechanism 4 adjusts the liquid level of the ballast tank 42 to simultaneously satisfy the following two points: 1. maintaining the outlet pipeline pressure of the ballast pump 41 between the minimum pressure and the maximum pressure; 2. ensuring that the difference between the sea discharge flow rate of the ballast pump 41 and the lifting flow rate of the lifting pump is not greater than the capacity of the ballast tank 42.

[0043] Further, the environment monitoring mechanism 2 includes a meteorological monitoring component 21 for monitoring meteorological parameters of the environment, a marine hydrological monitoring component 22 for monitoring hydrological parameters of the sea, and a platform attitude monitoring component 23 for monitoring the motion state of the platform.

[0044] Further, the environment monitoring mechanism 2 further includes an uninterruptible power supply component for power supply, the uninterruptible power supply is 10 kilovolt-ampere and 220-volt alternating voltage, so as to guarantee the effective transmission and monitoring of the terminals of each mechanism and device during the typhoon.

[0045] Specifically, the environment monitoring system transmits data with the device terminals through network communication in the TCP / IP method, so as to facilitate the sharing and utilization of monitoring data.

[0046] Specifically, the environment monitoring mechanism 2 is an important technical means to guarantee the safety of offshore installation and in-place operation of the platform, which lies in real-time monitoring of the motion state of the platform, storing the hydrological parameters and platform motion data under normal and extreme conditions to verify whether the design of the platform floating structure is reasonable, and dynamically adjusting the model.

[0047] Further, 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, and the barometric pressure sensor 211, the temperature and humidity sensor 212 and the wind speed and direction sensor 213 are in communication connection with the acquisition component 11.

[0048] Further, the marine hydrological monitoring assembly 22 comprises a wave height sensor 221 for monitoring the wave height and wave direction, and the wave height sensor 221 is in communication connection with the acquisition assembly 11.

[0049] Specifically, the air pressure sensor 211, the temperature and humidity sensor 212, the wind speed and direction sensor 213, and the wave height sensor 221 are unified in time reference, and the data of each sensor is uploaded to the acquisition assembly 11 and then fused and analyzed by the data service assembly 12.

[0050] Further, the platform attitude monitoring assembly 23 comprises a Beidou global positioning unit 231 and a motion reference unit 232, and the Beidou global positioning unit 231 and the motion reference unit 232 are in communication connection with the acquisition assembly 11.

[0051] Specifically, the wave height sensor 221 and the motion reference unit 232 are fiber-optically connected to the acquisition assembly 11.

[0052] Specifically, the motion reference unit 232 is a six-degree-of-freedom motion reference unit 232.

[0053] Further, the ballast monitoring mechanism 3 comprises a pressure sensor 31, a liquid level sensor 32, and a flow sensor 33, and the pressure sensor 31, the liquid level sensor 32, and the flow sensor 33 are in communication connection with the acquisition assembly 11.

[0054] Further, the tension leg floating wind power platform control system further comprises a structure 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, wherein the structure stress monitoring mechanism 5 and the mooring monitoring mechanism 6 are in communication connection with the acquisition assembly 11.

[0055] Specifically, the structure stress monitoring mechanism 5 acquires 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.

[0056] Specifically, the structure stress monitoring mechanism 5 comprises a stress strain gauge, which is installed at the connection of the lower floating body 44 and the tension leg, for monitoring the dynamic bending moment, shear force, and fatigue damage cumulative value of the lower floating body 44.

[0057] Preferably, the acquisition assembly 11 selects a programmable logic controller (PLC) acquisition assembly.

[0058] Among them, the mooring tension sensor and the stress strain gauge input the PLC acquisition assembly through a 4-20mA signal.

[0059] 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 ballast adjustment instructions and send to the ballast control mechanism 4, and the ballast control mechanism 4 responds to the ballast adjustment instructions and dynamically adjusts the liquid level of the ballast tank 42.

[0060] Specifically, the data service component 12 performs the following steps:

[0061] Unify the data of each sensor with a time reference;

[0062] Establish the transfer function of the wave height spectrum and the bending moment of the submerged body 44:

[0063]

[0064] Wherein, is the bending moment of the submerged body 44, is the transfer coefficient; is the transfer function, is the wave spectrum function, is the frequency variable.

[0065] Dynamic adjustment model training: using an LSTM network to learn the mapping relationship between historical environmental data and ballast adjustment amount.

[0066] Further, the motion reference unit 232 monitors the platform roll angle, sets a wave height threshold and a platform roll angle threshold, when the wave height is greater than the wave height threshold and the platform roll angle is greater than the platform roll angle, the data service component 12 combines the data feedback by the structural stress monitoring mechanism 5, and preferentially adjusts the ballast tank 42 in the stress concentration area.

[0067] Further, the tension leg floating wind power platform control system further comprises a video monitoring mechanism 7, which is in communication connection with the acquisition component 11.

[0068] Specifically, the video monitoring component is arranged at the mooring chain link interface and the ballast tank 42 electro-hydraulic valve 43 area, and 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.

[0069] Specifically, in the typhoon working condition, the uninterrupted power supply is used to maintain the system operation; if the Beidou positioning unit detects that the platform drift distance is greater than the threshold 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, and the mooring cable is loosened to the preset safe 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.

[0070] Further, the tension leg floating wind platform control system further comprises a terminal device 8, which is electrically connected with the acquisition assembly 11 and the data service assembly 12, and is used for remotely monitoring the state of the platform.

[0071] Further, the tension leg floating wind platform control system further comprises an alarm mechanism 9, which is used for sending an alarm signal.

[0072] Specifically, the alarm signal is sent at the same time as the system may start an emergency response program synchronously. In a typhoon condition, if the Beidou global positioning unit 231 detects that the platform drift distance exceeds the threshold value, the alarm mechanism 9 triggers the “typhoon mode”, and at the same time, the ballast control mechanism 4 starts the emergency discharge, and relaxes the mooring cable to the safe tension. The alarm signal can be remotely pushed through the terminal device 8 (such as a monitoring center computer, a mobile terminal), realizing “local alarm + remote early warning” double protection, which is convenient for the operator to handle in time.

[0073] The control flow of the embodiment comprises: unifying the data of each sensor to a time reference; the dynamic adjustment unit predicts the ballast adjustment parameter based on the historical data mapping relationship; the real-time decision unit compares the predicted value with the actual monitoring value to generate an error compensation instruction; the ballast control mechanism 4 responds to the instruction and meets the double constraints: the pressure of the ballast pump 41 ∈ [P min , P max ]; the difference between the discharge flow and the lifting flow is ≤ the capacity of the ballast tank 42.

[0074] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, on the basis of the above description, other different forms of changes or variations can also be made. Here, it is not necessary and impossible to exhaust all the implementation modes. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A tension leg floating wind platform control system, characterized by, The system comprises a central control mechanism, an environment monitoring mechanism and a ballast monitoring mechanism, a ballast control mechanism, a structure stress monitoring mechanism for monitoring state parameters of a platform submersible structure, and a mooring monitoring mechanism for monitoring mooring state parameters of the platform; The central control mechanism comprises a collection component and a data service component, and the collection component is in communication connection with the data service component; The environment monitoring mechanism is used for monitoring marine environment and motion state of the platform; The ballast control mechanism comprises a ballast pump, a ballast tank, an electro-hydraulic valve, a submersible body and a lifting pump, the electro-hydraulic valve is arranged between the ballast pump and the ballast tank, and is used for controlling pressure of the ballast pump, liquid level of the ballast tank and sea discharge flow rate of the ballast pump; the lifting pump is used for inputting seawater into the ballast tank; a difference between the sea discharge flow rate of the ballast pump and a lifting flow rate of the lifting pump is not greater than a capacity of the ballast tank; and the ballast monitoring mechanism is used for monitoring the pressure of the ballast pump, the liquid level of the ballast tank and the sea discharge flow rate of the ballast pump; The environment monitoring mechanism and the ballast monitoring mechanism are in communication connection with the collection component, and the electro-hydraulic valve is in communication connection with the data service component; The structure stress monitoring mechanism and the mooring monitoring mechanism are both in communication connection with the collection component; the structure stress monitoring mechanism acquires a dynamic bending moment and a fatigue damage value at a connection position of the submersible body in real time, and the mooring monitoring mechanism uses a mooring tension sensor to monitor tension and an angle of an anchor chain; The structure stress monitoring mechanism comprises stress strain gauges, the stress strain gauges are installed at the connection position of the platform submersible structure and the tension leg, and are used for monitoring the dynamic bending moment, a shear force and a fatigue damage cumulative value of the submersible body; the mooring tension sensor and the stress strain gauges input the collection component through 4-20 mA signals; The environment monitoring mechanism comprises a meteorological monitoring component for monitoring meteorological parameters of an environment, a marine hydrological monitoring component for monitoring hydrological parameters of the sea, and a platform attitude monitoring component for monitoring a motion state of the platform, the platform attitude monitoring component comprises a Beidou global positioning unit and a motion reference unit, the Beidou global positioning unit and the motion reference unit are both in communication connection with the collection component, the motion reference unit monitors a roll angle of the platform, a wave height threshold value and a platform roll angle threshold value are set, when the wave height is greater than the wave height threshold value and the platform roll angle is greater than the platform roll angle threshold value, the data service component combines data fed back by the structure stress monitoring mechanism, and preferentially adjusts the ballast tank in a stress concentration area; The data service component is configured to perform fusion analysis based on data uploaded by the environment monitoring mechanism, the ballast monitoring mechanism, the structure stress monitoring mechanism and the mooring monitoring mechanism, generate a ballast adjustment instruction and send the ballast adjustment instruction 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, wherein the data service component comprises a dynamic adjustment unit and an implementation decision unit, the data service component unifies data of various sensors to a time reference, and establishes a transfer function of a wave height spectrum and a bending moment of the submersible body: ​ ； wherein M is the bending moment of the submersible body, is the transfer coefficient; is the transfer function, is the wave spectrum function, is the frequency variable; The dynamic adjustment unit uses an LSTM network to learn a mapping relationship between historical environmental data and ballast adjustment amounts, and to predict a ballast adjustment parameter; the implementation decision unit compares the predicted ballast adjustment parameter with actually monitored data, generates an error compensation instruction, and sends the instruction to the ballast control mechanism; the ballast control mechanism responds to the instruction and satisfies double constraints: the outlet pipeline pressure of the ballast pump is between minimum pressure and maximum pressure; and the difference between the discharge flow of the ballast pump and the lifting flow of the lifting pump is not greater than the capacity of the ballast tank.

2. The tension leg platform control system of claim 1, wherein, The weather monitoring assembly includes an air pressure sensor, a temperature and humidity sensor, and a wind speed and direction sensor, all of which are in communication connection with the collection assembly.

3. The tension leg platform control system of claim 1, wherein, The marine hydrological monitoring assembly includes a wave height sensor for monitoring marine wave height and direction, which is in communication connection with the collection assembly.

4. The tension leg platform wind power system control system of claim 1, wherein, The ballast monitoring mechanism includes a pressure sensor, a liquid level sensor, and a flow sensor, all of which are in communication connection with the collection assembly.

5. The tension leg platform wind power system control system of claim 1, wherein, The video monitoring mechanism is also included, which is in communication connection with the collection assembly.

6. The tension leg platform wind power system control system of claim 1, wherein, The terminal device is also included, which is electrically connected with the collection assembly and the data service assembly, and is used for remotely monitoring the state of the platform.

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