A control system and method for a dehumidifier of a wind turbine generator set

Abstract

The present invention discloses a control system and method for a dehumidifier of a wind turbine generator set, the control system comprising: a first sensor, which obtains the operating parameters of the power generation equipment in the wind turbine generator set; a second sensor, which obtains the feedback information of the dehumidifier in the wind turbine generator set; a controller, which obtains the operating parameters and feedback information, and generates a power supply start-stop instruction and an electric energy storage instruction according to the operating parameters and feedback information; a battery, which stores the electric energy generated by the power generation equipment according to the electric energy storage instruction, or outputs the electric energy to the dehumidifier according to the power supply start-stop instruction; an inverter, the input end of the inverter is connected to the controller, the output end is connected to the dehumidifier, and the connection between the dehumidifier and the power generation equipment or / and the battery is connected or cut off according to the power supply start-stop instruction. The present invention monitors the humidity of the environment in which the dehumidifier works in real time, performs closed-loop control on the dehumidifier according to the real-time monitoring data, improves the safety as a whole, and avoids problems such as shortened life and waste of resources caused by excessive use.

Description

Technical Field

[0001] The present invention relates to the field of offshore wind turbine protection technology, and in particular to a control system and method for a wind turbine dehumidifier. Background Technology

[0002] Offshore wind turbines are in a harsh environment with high humidity and high salt spray. In order to extend the service life of internal electrical equipment and structures, after the offshore wind turbines are installed, dehumidifiers should be placed in the TUPU (transformer unit and power unit) layer and the nacelle layer of the tower to perform dehumidification work. Before the wind turbine is connected to the grid, the wind turbine needs to be installed and debugged. After the wind turbine is connected to the grid, submarine cable failures and power grid failures may occur. During the above installation and debugging period and the power grid failure period, the wind turbine is off-grid. It is necessary to set up an independent power supply to power the dehumidifier to ensure that the dehumidifier can continue to dehumidify the TUPU layer and the nacelle layer to avoid damage to important electrical equipment of offshore wind turbines due to excessive humidity.

[0003] However, the power supply of the dehumidification system of the dehumidifier lacks intelligent regulation, and its start and stop mode is remote or timed control, which results in the dehumidification effect not being fed back in time, resulting in excessive humidity inside the equipment, which can easily cause damage to important electrical equipment, and often causes energy waste of power supply equipment due to excessive dehumidification.

[0004] In summary, the protection of important electrical equipment in offshore wind turbines is very critical and directly affects the operation of the entire system of wind turbines. The dehumidifier must be able to work immediately when needed, but the dehumidifier must not work excessively, which will cause energy waste and shorten its service life. Therefore, how to effectively ensure that the dehumidifier can be powered on immediately and achieve intelligent regulation has become a technical problem that needs to be solved in this field. SUMMARY OF THE INVENTION

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the technical defects of the offshore dehumidifier in the prior art that it cannot be powered on immediately and cannot realize intelligent regulation, thereby providing a control system and method for the dehumidifier of a wind turbine.

[0006] To this end, the technical solution adopted in this application is:

[0007] The present invention provides a control system for a dehumidifier of a wind turbine generator set, comprising: a control system for a dehumidifier of a wind turbine generator set, including: a first sensor for obtaining the operating parameters of the power generation equipment in the wind turbine generator set; a second sensor for obtaining the feedback information of the dehumidifier in the wind turbine generator set; a controller for obtaining the operating parameters and the feedback information, and generating a power supply start-stop instruction and an electric energy storage instruction according to the operating parameters and the feedback information; a storage battery for storing the electric energy generated by the power generation equipment according to the electric energy storage instruction, or outputting electric energy to the dehumidifier according to the power supply start-stop instruction; an inverter, the input end of the inverter is connected to the controller, and the output end is connected to the dehumidifier, and connects or disconnects the connection between the dehumidifier and the power generation equipment or / and the storage battery according to the power supply start-stop instruction.

[0008] Further, the power generation equipment includes: a photovoltaic power generation device for obtaining the conversion of light energy into direct current electric energy for output; a wind power generation device for obtaining the conversion of wind energy into direct current electric energy for output.

[0009] Further, the first sensor includes: an anemometer, and the operating parameters include wind speed parameters; a light sensor, and the operating parameters include: light intensity parameters.

[0010] Further, the second sensor includes: a humidity sensor, and the feedback information includes: humidity information.

[0011] Further, the controller includes: an analog-to-digital conversion module for converting the operating parameters of the power generation equipment obtained into operating parameter digital signals; a control chip for comparing the operating parameter digital signals with respective pre-stored parameter thresholds, and generating corresponding power supply start-stop instructions according to the comparison results; a comprehensive switch drive execution module for connecting or disconnecting the connection between the power generation equipment or the storage battery and the inverter according to the power supply start-stop instructions.

[0012] Further, the analog-to-digital conversion module includes: an anemometer parameter analog-to-digital conversion sub-module for converting the obtained anemometer parameters into anemometer digital signals; a light intensity parameter analog-to-digital conversion sub-module for converting the obtained light intensity parameters into light intensity digital signals; a humidity information parameter analog-to-digital conversion sub-module for converting the obtained humidity information into humidity digital signals.

[0013] Further, the parameter thresholds include: a wind speed threshold, and the control chip compares the anemometer digital signals with the wind speed threshold; a light intensity threshold, and the control chip compares the light intensity digital signals with the light intensity threshold; a humidity threshold, and the control chip compares the humidity digital signals with the humidity threshold respectively.

[0014] Further, the integrated switch driving and executing module includes: a wind power generation equipment switch driving and executing sub-module, which connects or disconnects the connection between the wind power generation equipment and the inverter according to the power supply start / stop instruction; a photovoltaic power generation equipment switch driving and executing sub-module, which connects or disconnects the connection between the photovoltaic power generation equipment and the inverter according to the power supply start / stop instruction; a battery discharge switch driving and executing sub-module, which connects or disconnects the connection between the battery and the inverter according to the power supply start / stop instruction.

[0015] Further, the first sensor further includes a power monitoring circuit, and the operating parameters include: generated current and / or generated voltage.

[0016] Further, the control chip compares the generated current and / or generated voltage with a pre-stored generated current threshold and / or generated voltage threshold, and generates an electric energy storage instruction according to the comparison result.

[0017] Further, the integrated switch driving and executing module further includes: a battery charging switch driving and executing sub-module, which connects or disconnects the connection between the wind power generation equipment, the photovoltaic power generation equipment and the battery according to the electric energy storage instruction.

[0018] Further, the wind power generation equipment includes: a wind turbine, which is used to generate alternating current; a rectifier, which rectifies the alternating current generated by the wind turbine and outputs direct current to the controller.

[0019] Further, the wind turbine adopts a vertical-axis wind turbine, the blades of the vertical-axis wind turbine are arranged on the tower, the base of the tower is welded and fixed to the outer platform of the wind turbine unit, and the middle part of the tower is fixedly connected and strengthened with the outer platform of the wind turbine unit by angle steel to form a triangular rigid connection support.

[0020] Further, the control system further includes a wireless communication module, and the control system receives instructions from the cloud server or transmits data to the cloud server through the wireless communication module.

[0021] The present invention also provides a control method for a dehumidifier of a wind turbine unit, including: acquiring the operating parameters of the power generation equipment in the wind turbine unit and the feedback information of the dehumidifier in the wind turbine unit; generating a power supply start / stop instruction and an electric energy storage instruction according to the operating parameters and the feedback information; transmitting the electric energy generated by the power generation equipment to the battery for storage according to the electric energy storage instruction; controlling the connection or disconnection of the dehumidifier with the power generation equipment and / or the battery according to the power supply start / stop instruction.

[0022] Further, the operating parameters include: wind speed parameters, light intensity parameters.

[0023] Further, the feedback information includes: humidity information.

[0024] Further, the operating parameters include: the generated current and / or generated voltage of the power generation device.

[0025] Further, the step of transmitting the electric energy generated by the power generation device to the storage battery for storage according to the electric energy storage instruction includes: determining whether the generated current and / or generated voltage of the obtained power generation device is greater than the rated current threshold and / or rated voltage threshold; when the generated current and / or generated voltage of the obtained power generation device is greater than the rated current threshold and / or rated voltage threshold, sending an electric energy storage instruction to connect the power generation device and the storage battery electrically.

[0026] Further, the step of connecting or disconnecting the dehumidifier from the power generation device and / or the storage battery according to the power supply start / stop instruction includes: determining the working condition of the dehumidifier according to the relationship between the light intensity parameter and the light intensity threshold, and the relationship between the wind speed parameter and the wind speed threshold, and connecting or disconnecting the dehumidifier from the power generation device and / or the storage battery according to the working condition.

[0027] Further, the working condition includes: Working Condition 1, when the light intensity parameter is less than the light intensity threshold and the wind speed parameter is greater than the wind speed threshold, outputting a start / stop switching instruction, cutting off the power supply line of the photovoltaic power generation device, and connecting the wind power generation device to the power supply line to supply power to the dehumidifier.

[0028] Further, the working condition includes: Working Condition 2, when the light intensity parameter is greater than the light intensity threshold and the wind speed parameter is less than the wind speed threshold, outputting a start / stop switching signal, cutting off the power supply line of the wind power generation device, and connecting the photovoltaic power generation device to the power supply line to supply power to the dehumidifier.

[0029] Further, the working condition includes: Working Condition 3, when both the light intensity parameter and the wind speed parameter are greater than the light intensity threshold and the wind speed threshold, outputting a start signal, and connecting both the photovoltaic power generation device and the wind power generation device to the power supply line to supply power to the dehumidifier simultaneously.

[0030] Further, the working condition includes: Working Condition 4, when both the light intensity parameter and the wind speed parameter are less than the light intensity threshold and the wind speed threshold, outputting a stop signal, cutting off the power supply line of the photovoltaic power generation device and / or the wind power generation device, and sending a start signal to the storage battery to connect the storage battery to the power supply line to supply power to the dehumidifier.

[0031] In the present invention, the storage battery is a maintenance-free sealed valve-regulated lead-acid battery.

[0032] The technical solution of the present invention has the following advantages:

[0033] 1. The control system of the dehumidifier for a wind turbine provided by the present invention includes a power generation device, a storage battery, an inverter, a first sensor, a second sensor, and a controller. When the power generation device is operating, it outputs direct current electrical energy. The output direct current electrical energy can be directly delivered to the load dehumidifier according to the control instruction of the controller, or can be delivered to the storage battery for storage. The first sensor and the second sensor respectively obtain the operating parameters of the power generation device and the feedback information of the dehumidifier in the wind turbine. The storage battery stores or supplies power to the load dehumidifier according to the control instruction. The input end of the inverter is connected to the controller, and the output end is connected to the dehumidifier. The inverter connects or disconnects the power generation device or / and the storage battery with the dehumidifier according to the power supply start-stop instruction output by the controller. When the above system is operating, the first sensor and the second sensor respectively transmit the obtained operating parameters of the power generation device and the feedback information of the dehumidifier to the controller. The controller then generates a power supply start-stop instruction based on the two pieces of information, connects the power generation device or / and the storage battery to the inverter, converts the direct current into alternating current through the inverter and delivers it to the load dehumidifier, or generates a power storage instruction to connect the power generation device and the storage battery, so that the electrical energy generated by the power generation device is directly stored in the storage battery for charging.

[0034] Compared with the existing control system of the offshore wind dehumidifier, the present invention can provide multiple power supply methods for the dehumidifier, ensure the reliability of stable power supply, and at the same time realize the closed-loop control of the dehumidifier. The present invention changes the single wind power generation power supply method, utilizes the characteristics of wind and light complementarity, and designs a stable and reliable distributed independent power supply system, which supplies power to the load more reliably and ensures the safe power consumption of the dehumidifier before and after the wind turbine is connected to the grid. The introduction of multiple power supply methods enables the dehumidifier to have no worries during operation, can freely switch the power supply method according to the weather conditions, and the multiple power supply methods of the dehumidifier enable the dehumidifier to be powered on at any time. On the basis of ensuring that the dehumidifier has no worries about being powered on, the environmental humidity in which the dehumidifier operates is monitored in real time. The controller can perform closed-loop control on the dehumidifier according to the real-time monitoring data, overall improving the intelligent level of the offshore dehumidifier system. When the environmental humidity reaches the standard, the power supply input can be cut off in time to avoid problems such as shortened lifespan and wasted resources caused by its overuse.

[0035] 2. The control system of the dehumidifier for wind turbine units provided by the present invention. The power generation equipment includes: a photovoltaic power generation device that obtains light energy and converts it into direct current electrical energy for output; a wind power generation device that obtains wind energy and converts it into direct current electrical energy for output. In the present invention, the solar panels in the photovoltaic power generation device are arranged in the direction with the longest sunshine time and the highest intensity. The solar cells convert the absorbed solar radiation energy into electrical energy to supply power to the load, and the excess electrical energy is stored in the storage battery. In the present invention, the wind power generation device includes: a wind turbine for generating alternating current electrical energy; a rectifier for rectifying the alternating current electrical energy generated by the wind turbine and outputting direct current electrical energy to the controller. The wind turbine generates three-phase alternating current. A rectification module is provided to convert the alternating current into direct current, which can be directly transmitted to the inverter to supply power to the load, and the excess electrical energy is stored in the storage battery.

[0036] 3. The control system of the dehumidifier for wind turbine units provided by the present invention. The blades of the vertical-axis wind turbine adopt a "straight blade H-shaped" structure and are fixed to the hub by means of a triangular double fulcrum to convert wind energy into mechanical energy. The vertical-axis wind turbine is driven by the wind wheel to drive a rare-earth permanent magnet generator to convert mechanical energy into electrical energy. The wind blades of the vertical-axis wind turbine are arranged on the tower. The base of the tower is welded and fixed to the outer platform of the wind turbine unit, and the middle part of the tower is fixedly connected and strengthened with the outer platform of the wind turbine unit by angle steel to form a triangular rigid connection support. In the present invention, a small vertical-axis wind turbine is adopted. Compared with the existing horizontal-axis wind turbine, its ability to adapt to complex offshore environments is stronger. The rotation of the vertical-axis wind turbine is not affected by the wind direction, and there is no need for a wind direction control system, and the structure is simpler. In high-wind-speed areas, the vertical-axis wind turbine is safer and more stable than the horizontal one. Due to the reduction of the rotation speed, the stability of the wind turbine is greatly improved, making it have strong anti-vibration and anti-wind capabilities. Compared with the horizontal-axis wind turbine unit, the generator drive mechanism can be placed on the ground, which is convenient for maintenance. The vertical-axis structure has a smaller turning radius and saves space.

[0037] 4. The control system of the dehumidifier for wind turbine units provided by the present invention. The first sensor includes: a wind speed sensor, and the operating parameter includes a wind speed parameter; a light sensor, and the operating parameter includes: a light intensity parameter; the second sensor includes: a humidity sensor, and the feedback information includes: humidity information.

[0038] 5. The control system of the dehumidifier for wind turbine units provided by the present invention, wherein the controller includes: an analog-to-digital conversion module that converts the operating parameters of the power generation equipment obtained into digital signals of operating parameters; a control chip that compares the digital signals of the operating parameters with each pre-stored parameter threshold respectively and generates corresponding power supply start-stop instructions according to the comparison results; a comprehensive switch driving and executing module that connects or disconnects the connection between the power generation equipment or the storage battery and the inverter according to the power supply start-stop instructions. Among them, the analog-to-digital conversion module includes: an analog-to-digital conversion sub-module for wind speed parameters that converts the obtained wind speed parameters into digital signals of wind speed; an analog-to-digital conversion sub-module for light intensity parameters that converts the obtained light intensity parameters into digital signals of light intensity; an analog-to-digital conversion sub-module for humidity information parameters that converts the obtained humidity information into digital signals of humidity. In the present invention, the parameter thresholds include: a wind speed threshold, and the control chip compares the digital signal of wind speed with the wind speed threshold; a light intensity threshold, and the control chip compares the digital signal of light intensity with the light intensity threshold; a humidity threshold, and the control chip compares the digital signals of humidity with the humidity threshold respectively. In the present invention, the comprehensive switch driving and executing module includes: a switch driving and executing sub-module for wind power generation equipment that connects or disconnects the connection between the wind power generation equipment and the inverter according to the power supply start-stop instructions; a switch driving and executing sub-module for photovoltaic power generation equipment that connects or disconnects the connection between the photovoltaic power generation equipment and the inverter according to the power supply start-stop instructions; a switch driving and executing sub-module for battery discharge that connects or disconnects the connection between the storage battery and the inverter according to the power supply start-stop instructions.

[0039] 6. The control system of the dehumidifier for wind turbine units provided by the present invention, wherein the first sensor further includes a power monitoring circuit, and the operating parameters include: generated current or / and generated voltage. Among them, the control chip compares the generated current or / and generated voltage with the pre-stored generated current threshold or / and generated voltage threshold respectively and generates an electric energy storage instruction according to the comparison results. In the present invention, the comprehensive switch driving and executing module further includes: a switch driving and executing sub-module for battery charging that connects or disconnects the connection between the wind power generation equipment, the photovoltaic power generation equipment and the storage battery according to the electric energy storage instruction.

[0040] 7. The control system of the dehumidifier for wind turbine units provided by the present invention, wherein the control system further includes a wireless communication module, and the control system receives instructions from the cloud server or transmits data to the cloud server through the wireless communication module, and users can remotely monitor and operate the integrated control system.

[0041] 8. The present invention also provides a control method for a dehumidifier of a wind turbine generator set, including: obtaining the operating parameters of the power generation equipment in the wind turbine generator set and the feedback information of the dehumidifier in the wind turbine generator set; generating a power supply start / stop instruction and an electric energy storage instruction according to the operating parameters and the feedback information; transmitting the electric energy generated by the power generation equipment to a storage battery for storage according to the electric energy storage instruction; and controlling to connect or disconnect the dehumidifier from the power generation equipment or / and the storage battery according to the power supply start / stop instruction.

[0042] 9. In the control method for the dehumidifier of the wind turbine generator set of the present invention, the operating parameters include: wind speed parameters, light intensity parameters. In the present invention, the feedback information includes: humidity information. In the present invention, the operating parameters include: the generated current or / and generated voltage of the power generation equipment.

[0043] 10. In the control method for the dehumidifier of the wind turbine generator set of the present invention, the step of transmitting the electric energy generated by the power generation equipment to a storage battery for storage according to the electric energy storage instruction includes: judging whether the generated current or / and generated voltage of the obtained power generation equipment is greater than the rated current threshold or / and the rated voltage threshold; when the generated current or / and generated voltage of the obtained power generation equipment is greater than the rated current threshold or / and the rated voltage threshold, issuing an electric energy storage instruction and connecting the power generation equipment and the storage battery electrically.

[0044] 11. In the control method for the dehumidifier of the wind turbine generator set of the present invention, the step of connecting or disconnecting the dehumidifier from the power generation equipment or / and the storage battery according to the power supply start / stop instruction includes: determining the working condition of the dehumidifier according to the relationship between the light intensity parameter and the light intensity threshold, and the relationship between the wind speed parameter and the wind speed threshold, and connecting or disconnecting the dehumidifier from the power generation equipment or / and the storage battery according to the working condition.

[0045] 12. In the control method for the dehumidifier of the wind turbine generator set of the present invention, the working conditions include: Working condition 1, when the light intensity parameter is less than the light intensity threshold and the wind speed parameter is greater than the wind speed threshold, outputting a start / stop switching instruction, cutting off the power supply line of the photovoltaic power generation equipment, and connecting the wind power generation equipment to the power supply line to supply power to the dehumidifier; Working condition 2, when the light intensity parameter is greater than the light intensity threshold and the wind speed parameter is less than the wind speed threshold, outputting a start / stop switching signal, cutting off the power supply line of the wind power generation equipment, and connecting the photovoltaic power generation equipment to the power supply line to supply power to the dehumidifier; The working conditions include: Working condition 3, when both the light intensity parameter and the wind speed parameter are greater than the light intensity threshold and the wind speed threshold, outputting a start signal, and connecting both the photovoltaic power generation equipment and the wind power generation equipment to the power supply line to supply power to the dehumidifier simultaneously; The working conditions include: Working condition 4, when both the light intensity parameter and the wind speed parameter are less than the light intensity threshold and the wind speed threshold, outputting a stop signal, cutting off the power supply line of the photovoltaic power generation equipment or / and the wind power generation equipment, and sending a start signal to the storage battery to connect the storage battery to the power supply line to supply power to the dehumidifier.

[0046] Since this method is implemented based on the control system of the dehumidifier for wind turbine units in the present invention, it has any one of the advantages in the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0048] Figure 1 It is the schematic diagram of the control system structure of the dehumidifier for wind turbine units in Embodiment 1 of the present invention;

[0049] Figure 2 It is the internal circuit principle block diagram of the controller in Embodiment 1 of the present invention;

[0050] Figure 3 It is the schematic diagram of the control system structure of the dehumidifier for wind turbine units in Embodiment 2 of the present invention;

[0051] Explanation of the reference numerals in the drawings:

[0052] 1 - Controller; 2 - Wind speed sensor; 3 - Light sensor; 4 - Humidity sensor; 5 - Wind power generation equipment; 6 - Photovoltaic power generation equipment; 7 - Battery; 8 - Inverter; 9 - Dehumidifier; 10 - Wireless communication module; 20 - Lighting system; 11 - Control chip; 12 - Wind speed parameter analog - to - digital conversion sub - module; 13 - Light intensity parameter analog - to - digital conversion sub - module; 14 - Humidity information parameter analog - to - digital conversion sub - module; 15 - Wind power generation equipment switch drive execution sub - module; 16 - Photovoltaic power generation equipment switch drive execution sub - module; 17 - Battery discharge switch drive execution sub - module; 18 - Power monitoring circuit; 19 - Battery charging switch drive execution sub - module. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0053] In order to facilitate the understanding of the purpose, technical solutions and key points of the present invention, the following will further describe the embodiments of the present invention in detail. The present invention can be implemented in many different forms and should not be construed as limited to the embodiments described herein. On the contrary, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the concept of the present invention to those skilled in the art. The present invention will only be defined by the claims.

[0054] Embodiment 1

[0055] The embodiment of the present invention provides a control system for a dehumidifier of a wind turbine unit, as Figure 1As shown in the figure, the control system includes: a storage battery 7, an inverter 8, a first sensor, a second sensor, and a controller 1. Among them, the first sensor acquires the operating parameters of the power generation equipment in the wind turbine; the second sensor acquires the feedback information of the dehumidifier 9 in the wind turbine; the controller 1 acquires the operating parameters and the feedback information, and generates a power supply start / stop instruction and a power storage instruction according to the operating parameters and the feedback information; the storage battery 7 stores the electric energy generated by the power generation equipment according to the power storage instruction, or outputs electric energy to the dehumidifier 9 according to the power supply start / stop instruction; the input end of the inverter 8 is connected to the controller, and the output end is connected to the dehumidifier. According to the power supply start / stop instruction, the connection between the dehumidifier and the power generation equipment or / and the storage battery is connected or disconnected.

[0056] When the power generation equipment is working, it outputs DC electric energy. The output DC electric energy can be directly transmitted to the load dehumidifier 9 according to the control instruction of the controller 1, or can be transmitted to the storage battery 7 for storage. The first sensor and the second sensor respectively acquire the operating parameters of the power generation equipment and the feedback information of the dehumidifier 9 in the wind turbine. The storage battery 7 stores the electric energy output by the power generation equipment or supplies power to the load dehumidifier 9 according to the control instruction.

[0057] The main function of the inverter 8 is as follows: The offshore wind power dehumidifier 9 is an AC load. The electric energy output by the power generation equipment and the electric energy released by the storage battery 7 need to be modulated, filtered, and boosted by the inverter 8 to obtain a sine alternating current with the same rated frequency and rated voltage of the AC load, and provided for the dehumidifier 9 to use. The inverter 8 has functions such as circuit short-circuit protection, under-voltage protection, over-current protection, reverse connection protection, and lightning protection. The input end of the inverter 8 is connected to the controller 1, and the output end is connected to the dehumidifier 9. The inverter 8 connects or disconnects the power generation equipment or / and the storage battery 7 from the dehumidifier 9 according to the power supply start / stop instruction output by the controller 1. When the above system is working, the first sensor and the second sensor respectively transmit the acquired operating parameters of the power generation equipment and the feedback information of the dehumidifier 9 to the controller 1. The controller 1 then generates a power supply start / stop instruction according to the two pieces of information, connects the power generation equipment or / and the storage battery 7 to the inverter 8, converts the direct current into alternating current through the inverter 8 and transmits it to the load dehumidifier 9, or generates a power storage instruction to connect the power generation equipment and the storage battery 7, so that the electric energy generated by the power generation equipment is directly stored in the storage battery 7 for charging.

[0058] The control system of the wind turbine dehumidifier provided in the embodiment of the present invention can provide a variety of power supply modes for the dehumidifier, ensure the reliability of stable power supply, and realize closed-loop control of the dehumidifier. The embodiment of the present invention changes the single wind power generation power supply mode, utilizes the complementary characteristics of wind and light, and designs a stable and reliable distributed independent power supply system, which provides more reliable power supply to the load and ensures the safe use of electricity for the dehumidifier before and after the wind turbine is connected to the grid. The introduction of multiple power supply modes makes the dehumidifier worry-free when working, and the power supply mode can be switched freely according to the weather conditions. The multiple power supply modes of the dehumidifier allow the dehumidifier to be powered on at any time. On the basis of ensuring that the dehumidifier is powered on without any worries, the environmental humidity in which the dehumidifier works is monitored in real time. The controller can perform closed-loop control of the dehumidifier based on the real-time monitoring data, which improves the overall intelligence of the offshore dehumidifier system. When the environmental humidity reaches the index, the power input can be cut off in time to avoid the problem of shortened life and waste of resources caused by excessive use.

[0059] The control system of the wind turbine dehumidifier provided in the embodiment of the present invention includes in the power generation equipment: photovoltaic power generation equipment 6, which obtains light energy and converts it into DC power for output; wind power generation equipment 5, which obtains wind energy and converts it into DC power for output. In the embodiment of the present invention, the solar panels in the photovoltaic power generation equipment 6 are arranged in the direction with the longest sunshine time and the highest intensity. The solar cells convert the absorbed solar radiation energy into electrical energy to power the load, and the excess electrical energy is stored in the battery 7. In the present invention, the wind power generation equipment includes: a wind turbine generator, which is used to generate AC power; a rectifier, which is used to rectify the AC power generated by the wind turbine generator and output DC power to the controller. The wind turbine generator generates three-phase AC power, and a rectifier module is provided to convert the AC power into DC power, which can be directly transmitted to the inverter to power the load, and the excess electrical energy is stored in the battery.

[0060] The control system of the dehumidifier for a wind turbine provided by an embodiment of the present invention uses a vertical-axis wind turbine. The blades of the vertical-axis wind turbine adopt a "straight blade H-type" structure and are fixed to the hub by a triangular double fulcrum, converting wind energy into mechanical energy. The vertical-axis wind turbine drives a rare-earth permanent magnet generator by a wind wheel, converting mechanical energy into electrical energy. The wind blades of the vertical-axis wind turbine are arranged on a tower. The base of the tower is welded and fixed to the outer platform of the wind turbine, and the middle part of the tower is fixedly connected and strengthened with the outer platform of the wind turbine by angle steel to form a triangular rigid connection support. In the present invention, a small vertical-axis wind turbine is adopted. Compared with the existing horizontal-axis wind turbine, it has a stronger ability to adapt to complex marine environments. The rotation of the vertical-axis wind turbine is not affected by the wind direction, and there is no need for a wind direction control system, so the structure is simpler. In high-wind-speed areas, the vertical-axis wind turbine is safer and more stable than the horizontal one. Due to the reduction of the rotation speed, the stability of the wind turbine is greatly improved, making it have strong anti-vibration and anti-wind capabilities. Compared with the horizontal-axis wind turbine generator set, the generator drive mechanism can be placed on the ground, which is convenient for maintenance. The vertical-axis structure has a smaller radius of gyration and saves space.

[0061] The control system of the dehumidifier for a wind turbine provided by an embodiment of the present invention. The first sensors include: a wind speed sensor 2 for obtaining the operating parameter of wind speed; a light intensity sensor 3 for obtaining the operating parameter of light intensity. The second sensors include: a humidity sensor 4 for obtaining the feedback information of humidity. Among them, the wind speed sensor 2 can preferably be an ultrasonic wind speed sensor, and its principle is to use the ultrasonic time-difference method to measure the wind speed. Compared with the traditional mechanical wind speed and direction indicator, it has the characteristics of small wear, long service life, and fast response speed. It can be widely used in urban environmental monitoring, wind power generation, meteorological monitoring and other fields, and does not require maintenance and on-site calibration. The signal access is convenient, and it can provide both digital and analog signals at the same time. The main measurement parameters of the ultrasonic wind speed sensor are wind speed and wind direction. Its wind speed range is 0-60 m / s, the starting wind speed value < 0.5 m / s, and the wind direction range is 0-360°. The light intensity sensor can also be called a light illuminance sensor. The light illuminance sensor is a device that converts light signals into electrical signals based on the photoelectric effect. Its wavelength measurement range is generally 380 nm-730 nm. The humidity sensor adopts an air humidity sensor. The air humidity sensor is mainly used for meteorological observation, environmental control, etc. The temperature range of a standard air humidity sensor is -45 to 65 °C.

[0062] In an embodiment of the present invention, as Figure 2As shown, the controller 1 includes: an analog-to-digital conversion module that converts the operating parameters of the power generation device obtained into digital operating parameter signals; a control chip 11 that compares the digital operating parameter signals with each pre-stored parameter threshold respectively and generates corresponding power supply start-stop commands according to the comparison results; a comprehensive switch drive execution module that connects or disconnects the connection between the power generation device or the battery 7 and the inverter 8 according to the power supply start-stop commands. Among them, the analog-to-digital conversion module includes: a wind speed parameter analog-to-digital conversion sub-module 12 that converts the obtained wind speed parameter into a wind speed digital signal; a light intensity parameter analog-to-digital conversion sub-module 13 that converts the obtained light intensity parameter into a light intensity digital signal; a humidity information parameter analog-to-digital conversion sub-module 14 that converts the obtained humidity information into a humidity digital signal. The parameter thresholds include: a wind speed threshold, and the control chip compares the wind speed digital signal with the wind speed threshold; a light intensity threshold, and the control chip 11 compares the light intensity digital signal with the light intensity threshold; a humidity threshold, and the control chip 11 compares the humidity digital signal with the humidity threshold respectively. The comprehensive switch drive execution module includes: a wind power generation device switch drive execution sub-module 15 that connects or disconnects the connection between the wind power generation device and the inverter according to the power supply start-stop commands; a photovoltaic power generation device switch drive execution sub-module 16 that connects or disconnects the connection between the photovoltaic power generation device and the inverter according to the power supply start-stop commands; a battery discharge switch drive execution sub-module 17 that connects or disconnects the connection between the battery and the inverter according to the power supply start-stop commands.

[0063] In the specific structure of the above-mentioned controller 1, it includes a control chip 11, an analog-to-digital conversion sub-module 12 for wind speed parameters, an analog-to-digital conversion sub-module 13 for light intensity parameters, an analog-to-digital conversion sub-module 14 for humidity information parameters, a switch drive execution sub-module 15 for wind power generation equipment, a switch drive execution sub-module 16 for photovoltaic power generation equipment, and a battery discharge switch drive execution sub-module 17. Based on the above circuit modules, the circuit signal direction for realizing the power supply control of the dehumidifier is as follows: The wind speed sensor 2, the light sensor 3, and the humidity sensor 4 are respectively subjected to digital processing by the analog-to-digital conversion sub-module 12 for wind speed parameters, the analog-to-digital conversion sub-module 13 for light intensity parameters, and the analog-to-digital conversion sub-module 14 for humidity information parameters, and then sent to the control chip 11 for comprehensive analysis. According to the analysis result, the control chip 11 outputs corresponding start-stop control signals to the switch drive execution sub-module 15 for wind power generation equipment, and / or the switch drive execution sub-module 16 for photovoltaic power generation equipment, and / or the battery discharge switch drive execution sub-module 17. The switch drive execution sub-module 15 for wind power generation equipment connects or disconnects the connection between the wind power generation equipment 5 and the inverter 8, the switch drive execution sub-module 16 for photovoltaic power generation equipment connects or disconnects the connection between the photovoltaic power generation equipment 6 and the inverter 8, and the battery discharge switch drive execution sub-module 17 connects or disconnects the connection between the battery 7 and the inverter 8.

[0064] In the embodiment of the present invention, as Figure 2 shown, a battery charging control circuit is also provided in the embodiment of the present invention. Specifically, the first sensor further includes a power monitoring circuit 18, and the power monitoring circuit monitors the generated current and / or generated voltage of the power generation equipment. The operating parameters include: generated current and / or generated voltage. The control chip 11 compares the generated current and / or generated voltage with the pre-stored generated current threshold and / or generated voltage threshold, and generates a power storage instruction according to the comparison result. Correspondingly, in the embodiment of the present invention, the comprehensive switch drive execution module further includes: a battery charging switch drive execution sub-module 19, which connects or disconnects the connection between the wind power generation equipment 5, the photovoltaic power generation equipment 6 and the battery 7 according to the power storage instruction. The above circuit structure can basically form a battery charging control circuit. The power monitoring circuit 18 monitors the generated current and / or generated voltage of the power generation equipment, and sends the monitored values to the control chip 11 for analysis and processing. The control chip 11 generates a charging instruction or does not generate a charging instruction according to the comparison result. When a charging instruction is generated, the controller sends a start signal to the battery charging switch drive execution sub-module 19, and the battery charging switch drive execution sub-module 19 connects the battery 7 to the wind power generation equipment 5 and / or the photovoltaic power generation equipment 6, and the wind power generation equipment 5 and / or the photovoltaic power generation equipment 6 charge the battery.

[0065] In an embodiment of the present invention, a wireless communication module 10 is further included. The control system receives instructions from the cloud server or transmits data to the cloud server through the wireless communication module 10, and users can remotely monitor and operate the integrated regulation system.

[0066] Embodiment 2:

[0067] The difference between Embodiment 2 and Embodiment 1 of the present invention is that, as Figure 3 shown, the control system further includes a lighting system 20. The lighting system 20 is connected to the inverter 8. When the inverter 8 outputs electric energy, the lighting system 20 starts to work to achieve offshore lighting.

[0068] In an embodiment of the present invention, two sets of dehumidifiers 9 can be provided, which are respectively arranged in the nacelle and the tower barrel of the wind turbine generator. Correspondingly, two sets of humidity sensors are also provided, which are respectively arranged in the nacelle of the wind turbine generator and the tower barrel of the wind turbine generator. Two sets of lighting systems 20 are also provided, which are respectively arranged in the nacelle and the tower barrel of the wind turbine generator.

[0069] It should be noted that the number of sets of the above-mentioned dehumidifiers and sensors is only for illustrative purposes, and the actual number can be adjusted according to needs, and the specific number of sets is not limited thereto.

[0070] Embodiment 3:

[0071] Embodiment 3 of the present invention provides a control method for a dehumidifier of a wind turbine generator, which is implemented based on the control system of Embodiment 1. The control method includes: obtaining the operation parameters of the power generation equipment in the wind turbine generator and the feedback information of the dehumidifier in the wind turbine generator; generating a power supply start / stop instruction and an electric energy storage instruction according to the operation parameters and the feedback information; transmitting the electric energy generated by the power generation equipment to the storage battery for storage according to the electric energy storage instruction; controlling to connect or disconnect the dehumidifier from the power generation equipment or / and the storage battery according to the power supply start / stop instruction.

[0072] The system is the basis for implementing the control method. This control method has the hardware basis of the control system described in Embodiment 1. Based on this, the steps for implementing the control method include: The controller comprehensively analyzes and processes the data parameters collected via the wind speed sensor, light sensor, humidity sensor, and power generation current and / or power generation voltage sensor, determines which device is more suitable to provide power supply for the current dehumidifier to better meet the working requirements, and generates corresponding power supply start / stop instructions or power storage instructions. The power storage instruction is used to enable the power generation device to charge the battery, and the power supply start / stop instruction is used to realize the switching of the connection between the battery and the power generation device and the load. In the embodiment of the present invention, multiple power supply methods can be provided for the dehumidifier, ensuring the reliability of stable power supply, and at the same time realizing the closed-loop control of the dehumidifier. The embodiment of the present invention changes the single wind power generation power supply method, utilizes the characteristics of wind-light complementary, and designs a stable and reliable distributed independent power supply system, which supplies power to the load more reliably and ensures the safe power consumption of the dehumidifier before and after the fan is connected to the grid. The introduction of multiple power supply methods enables the dehumidifier to have no worries during operation, can freely switch the power supply method according to the weather conditions, and the multiple power supply methods of the dehumidifier enable the dehumidifier to be powered on at any time. On the basis of ensuring that the dehumidifier has no worries about being powered on, the environmental humidity in which the dehumidifier works is monitored in real time, and the controller can perform closed-loop control on the dehumidifier according to the real-time monitoring data, overall improving the intelligence level of the offshore dehumidifier system. When the environmental humidity reaches the standard, the power supply input can be cut off in time to avoid problems such as shortened lifespan and wasted resources caused by overuse.

[0073] In the embodiment of the present invention, the operating parameters include: wind speed parameters, light intensity parameters, power generation current and / or power generation voltage of the power generation device; the feedback information includes: humidity information.

[0074] In the embodiment of the present invention, the transmission of the electric energy generated by the power generation device to the battery for storage according to the power storage instruction includes: judging whether the obtained power generation current and / or power generation voltage of the power generation device is greater than the rated current threshold and / or the rated voltage threshold; when the obtained power generation current and / or power generation voltage of the power generation device is greater than the rated current threshold and / or the rated voltage threshold, issue a power storage instruction to connect the power generation device and the battery electrically.

[0075] In the embodiment of the present invention, the connection or disconnection of the dehumidifier from the power generation device and / or the battery according to the power supply start / stop instruction includes: determining the working condition of the dehumidifier according to the relationship between the light intensity parameter and the light intensity threshold, and the relationship between the wind speed parameter and the wind speed threshold, and connecting or disconnecting the dehumidifier from the power generation device and / or the battery according to the working condition.

[0076] Among them, several working conditions of the dehumidifier include: Working condition 1, when the light intensity parameter is less than the light intensity threshold and the wind speed parameter is greater than the wind speed threshold, an on-off switching instruction is output, the power supply line of the photovoltaic power generation device is cut off, and the wind power generation device is connected to the power supply line to supply power to the dehumidifier; Working condition 2, when the light intensity parameter is greater than the light intensity threshold and the wind speed parameter is less than the wind speed threshold, an on-off switching signal is output, the power supply line of the wind power generation device is cut off, and the photovoltaic power generation device is connected to the power supply line to supply power to the dehumidifier; The working conditions include: Working condition 3, when both the light intensity parameter and the wind speed parameter are greater than the light intensity threshold and the wind speed threshold, a start signal is output, and both the photovoltaic power generation device and the wind power generation device are connected to the power supply line to supply power to the dehumidifier at the same time; The working conditions include: Working condition 4, when both the light intensity parameter and the wind speed parameter are less than the light intensity threshold and the wind speed threshold, a stop signal is output, the power supply line of the photovoltaic power generation device or / and the wind power generation device is cut off, and a start signal is sent to the storage battery, and the storage battery is connected to the power supply line to supply power to the dehumidifier.

[0077] In addition, excluding the above four working conditions, the control method may further include a fifth working condition as follows:

[0078] Working condition 5, when the humidity parameter collected by the humidity sensor is greater than the humidity threshold, the controller does not act, and the system continues to supply power to the dehumidifier in any one of the working conditions 1 to 4; when the humidity parameter collected by the humidity sensor is less than the humidity threshold, the controller sends a stop instruction to the integrated switch drive execution module to cut off the power supply of the dehumidifier, or directly sends a power adjustment instruction to the built-in controlled end of the dehumidifier to adjust the dehumidifier to a low-power working mode to reduce the overwork of the dehumidifier, protect the machine, and extend the service life.

[0079] In the embodiment of the present invention, the time for the wind-solar complementary power supply system to continue to supply power to the dehumidifier in any one of the working conditions 1 to 4 is 1h-2h. After 1h-2h, the controller judges the comparison result between the humidity parameter collected by the humidity sensor and the humidity threshold again.

[0080] Obviously, the above embodiments are only examples for clear illustration and not limitations on the implementation manners. 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 enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A control system for a wind turbine dehumidifier, characterized in that: include: A first sensor is used to obtain operating parameters of a power generation device in a wind turbine; The second sensor obtains feedback information from the dehumidifier in the wind turbine; The controller obtains operating parameters and feedback information, and generates power supply start and stop instructions and electric energy storage instructions according to the operating parameters and feedback information; The battery stores the electric energy generated by the power generation equipment according to the electric energy storage instruction, or outputs the electric energy to the dehumidifier according to the power supply start and stop instruction; An inverter, the input end of which is connected to the controller, and the output end of which is connected to the dehumidifier, and the connection between the dehumidifier and the power generation equipment and / or the battery is connected or disconnected according to the power supply start and stop command; Power generation equipment includes: Photovoltaic power generation equipment, which captures light energy and converts it into DC power output; Wind power generation equipment, which captures wind energy and converts it into DC power output; The first sensor comprises: Wind speed sensor, operating parameters include wind speed parameters; Light sensor, operating parameters include: light intensity parameters; The second sensor includes: Humidity sensor, feedback information includes: humidity information; The controller includes: An analog-to-digital conversion module converts the acquired operating parameters of the power generation equipment into operating parameter digital signals; The control chip compares the operating parameter digital signal with the pre-stored parameter thresholds and generates corresponding power supply start and stop instructions according to the comparison results; The integrated switch drive execution module connects or disconnects the power generation equipment or battery and the inverter according to the power supply start and stop instructions; The first sensor also includes a power monitoring circuit, and the operating parameters include: the generated current and / or the generated voltage; The control chip compares the generated current and / or generated voltage with a pre-stored generated current threshold and / or generated voltage threshold, and generates an electric energy storage instruction according to the comparison result.

2. The control system of the wind turbine dehumidifier according to claim 1, characterized in that: The analog-to-digital conversion module comprises: The wind speed parameter analog-to-digital conversion submodule converts the acquired wind speed parameters into a wind speed digital signal; The light intensity parameter analog-to-digital conversion submodule converts the acquired light intensity parameter into a light intensity digital signal; The humidity information parameter analog-to-digital conversion submodule converts the acquired humidity information into a humidity digital signal.

3. The control system of the wind turbine dehumidifier according to claim 2, characterized in that: The parameter thresholds include: A wind speed threshold, wherein the control chip compares the wind speed digital signal with the wind speed threshold; a light intensity threshold, wherein the control chip compares the light intensity digital signal with the light intensity threshold; Humidity threshold, the control chip compares the humidity digital signal with the humidity threshold respectively.

4. The control system of the wind turbine dehumidifier according to claim 1, characterized in that: The integrated switch driving execution module includes: A wind power generation equipment switch drive execution submodule, which switches on or off the connection between the wind power generation equipment and the inverter according to the power supply start and stop instruction; A photovoltaic power generation equipment switch drive execution submodule, which switches on or off the connection between the photovoltaic power generation equipment and the inverter according to the power supply start and stop instruction; The battery discharge switch drives the execution submodule to connect or disconnect the battery from the inverter according to the power supply start and stop instruction.

5. The control system of the wind turbine dehumidifier according to claim 1, characterized in that: The integrated switch driving execution module also includes: The battery charging switch drives the execution submodule, and according to the electric energy storage instruction, connects or disconnects the connection between the wind power generation equipment, the photovoltaic power generation equipment and the battery.

6. The control system of the wind turbine dehumidifier according to claim 1, characterized in that: The wind power generation equipment comprises: Wind turbines for generating AC electrical energy; The rectifier is used to rectify the AC power generated by the wind turbine and output DC power to the controller.

7. The control system of the wind turbine dehumidifier according to claim 1, characterized in that: The wind turbine adopts a vertical axis wind turbine, the blades of which are arranged on a tower, the base of the tower is welded and fixed to the outer platform of the wind turbine, and the middle part of the tower and the outer platform of the wind turbine are reinforced and fixedly connected with angle steel to form a triangular hard connection support.

8. The control system of the wind turbine dehumidifier according to claim 1, characterized in that: The control system further comprises: A wireless communication module, through which the control system receives instructions from a cloud server or transmits data to the cloud server.

9. A control method for a wind turbine dehumidifier, characterized in that: include: Obtain the operating parameters of the power generation equipment in the wind turbine and the feedback information of the dehumidifier in the wind turbine; Generate power supply start and stop instructions and electric energy storage instructions according to the operating parameters and feedback information; transmitting the electric energy generated by the power generation equipment to the storage battery for storage according to the electric energy storage instruction; Controlling the dehumidifier to connect or disconnect with the power generation equipment and / or the battery according to the power supply start / stop instruction; The operating parameters include: the power generation current and / or the power generation voltage of the power generation equipment; The operating parameters include: wind speed parameters, light intensity parameters; The step of transmitting the electric energy generated by the power generation equipment to the storage battery for storage according to the electric energy storage instruction comprises: Determine whether the acquired power generation current and / or power generation voltage of the power generation equipment is greater than a rated current threshold and / or a rated voltage threshold; When the acquired power generation current and / or power generation voltage of the power generation equipment is greater than the rated current threshold and / or the rated voltage threshold, an electric energy storage instruction is issued to connect the power generation equipment with the storage battery; The connecting or disconnecting the dehumidifier from the power generation equipment and / or the battery according to the power supply start / stop instruction includes: Determine the working condition of the dehumidifier according to the relationship between the light intensity parameter and the light intensity threshold, and the relationship between the wind speed parameter and the wind speed threshold, and connect or disconnect the dehumidifier from the power generation device and / or the battery according to the working condition; The working conditions include: Working condition 1: when the light intensity parameter is less than the light intensity threshold and the wind speed parameter is greater than the wind speed threshold, a start-stop switching instruction is output to cut off the power supply line of the photovoltaic power generation equipment, and connect the wind power generation equipment to the power supply line to power the dehumidifier; The working conditions include: Working condition 2: when the light intensity parameter is greater than the light intensity threshold and the wind speed parameter is less than the wind speed threshold, a start-stop switching signal is output to cut off the power supply line of the wind power generation equipment, and connect the photovoltaic power generation equipment to the power supply line to power the dehumidifier; The working conditions include: Working condition three: when the light intensity parameter and the wind speed parameter are both greater than the light intensity threshold and the wind speed threshold, a start signal is output to connect the photovoltaic power generation equipment and the wind power generation equipment to the power supply line and power the dehumidifier at the same time; The working conditions include: Working condition four, when the light intensity parameter and the wind speed parameter are both less than the light intensity threshold and the wind speed threshold, a stop signal is output to cut off the power supply line of the photovoltaic power generation equipment and / or the wind power generation equipment, and a start signal is sent to the battery to connect the battery to the power supply line to power the dehumidifier.

10. The control method of the wind turbine dehumidifier according to claim 9, characterized in that: The feedback information includes: humidity information.

Images