Online monitoring device and method for leakage of water-cooled converter pipeline of wind turbine generator
By installing gravity-type water drop frequency sensors and temperature and humidity sensors in the water-cooled converter of the wind turbine, combined with the Internet of Things technology, real-time monitoring and early warning of water-cooled converter pipeline leakage is solved, and the problem of leakage cannot be discovered in the existing technology is solved, and equipment reliability and fan utilization are improved.
Patent Information
- Application Number
- CN202510424171.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2025-07-04
AI Technical Summary
The water-cooled converters of the existing technology of the stroke motor unit lack effective pipeline leakage monitoring methods, which leads to leakage only after the damage to important components or the abnormal shutdown of the unit, and cannot be handled in advance, causing economic losses and safety hazards.
Design an online monitoring device for pipeline leakage of water-cooled converter for wind turbines, including cabinets, sensors and processors. The pipeline leakage is monitored in real time using gravity-type water droplet frequency sensors and temperature and humidity sensors, and the alarm information is sent to the mobile terminal through Internet of Things technology to realize early warning and timely processing.
Real-time monitoring of water-cooled converter pipeline leakage is realized, and can be discovered and dealt with in a timely manner before the leakage is exposed, preventing component damage and accidents, improving equipment reliability and fan utilization, and reducing economic losses.
Smart Images
Figure CN120253083A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of wind power generation, and particularly to an on-line monitoring device and method for leakage of a water-cooled converter pipeline of a wind turbine generator set. Background Art
[0002] The converter of a wind turbine generator set is a core power electronic device in a wind power generation system, and its functions cover multiple key links such as electric energy conversion, system control, and grid adaptation. The instability of natural wind causes the speed of the wind turbine to change, while the power grid requires a constant 50Hz alternating current. The converter dynamically adjusts excitation parameters (such as amplitude, phase, and frequency) to convert the variable-frequency electric energy generated by the wind turbine into constant-frequency electric energy synchronized with the power grid. At present, the heat dissipation methods of converters are divided into air cooling and water cooling. The water-cooled converter of a wind turbine is a key thermal management technology in a wind power generation system, and it has significant advantages especially in high-temperature and high-power scenarios.
[0003] The water-cooling system adopts a sealed design to prevent pollutants such as dust and salt spray from entering the interior of the converter. The water-cooled converter quickly absorbs the heat generated by the power module of the converter through a circulating coolant (such as water or antifreeze) and transfers it to an external heat dissipation device (such as a cold radiator or an air radiator), thereby significantly reducing the device temperature. Compared with air cooling, the water-cooling system can control the temperature more evenly and stably due to the large specific heat capacity of the liquid and high heat conduction efficiency, and avoid performance degradation or damage caused by local overheating. For example, in wind power generation, the converter needs to operate at high load for a long time, and the water-cooling system can ensure that its core components (such as IGBT, Insulated Gate Bipolar Transistor, or thyristor) work within a safe temperature range. The water-cooling system reduces the damage of thermal stress to electronic components by reducing the operating temperature of the power module, thereby extending the service life of the device.
[0004] In a high-voltage and high-power scenario of wind power, leakage of the internal pipeline of the water-cooled converter will seriously affect the performance and safety of the device. The leakage of the coolant will disrupt the water circulation balance, reduce the heat dissipation efficiency, resulting in limited output power of the converter or a decrease in the electric energy conversion efficiency; leakage to electrical components (such as damage to IGBTs, etc., which is generally caused by pipeline leakage or excessive humidity) may cause a short circuit, and even lead to accidents such as arc discharge and fire; it may corrode the surrounding metal structures or circuit boards, accelerating the aging of the device.
[0005] At present, there is a lack of an effective monitoring method for leakage of the cooling pipeline in the water-cooled converter. It can only be detected by water pressure alarm or abnormal shutdown of the unit caused by damage to important components. There is a lack of real-time monitoring and no pre-treatment. Often, large losses of spare parts and electricity will be caused after a failure occurs. Summary of the Invention
[0006] The technical problem to be solved by the present invention is to provide an on-line monitoring device and method for pipeline leakage of a water-cooled converter of a wind turbine, aiming at the deficiencies of the prior art.
[0007] The technical solution of the present invention to solve the above technical problems is as follows: An on-line monitoring device for pipeline leakage of a water-cooled converter of a wind turbine, comprising: a cabinet body, a pipeline of the water-cooled converter of the wind turbine, a plurality of first sensors for detecting pipeline leakage of the water-cooled converter of the wind turbine, the pipeline of the water-cooled converter of the wind turbine is installed in the cabinet body, and the plurality of first sensors are installed at the bottom of the cabinet body and below the pipeline of the water-cooled converter of the wind turbine.
[0008] The beneficial effect of adopting the technical solution of the present invention is: Real-time monitoring of the pipeline leakage in the converter, the positions of the sensors can be replaced according to different models, reliable monitoring can be carried out for all models, and the installation is convenient. It can effectively monitor in the early stage of leakage, prevent the damage of components and other accidents, and reduce economic losses.
[0009] Further, a second sensor for detecting temperature and humidity is installed in the cabinet body.
[0010] The beneficial effect of adopting the above further technical solution is: Cooperating with the temperature and humidity sensors, sending the received signals to the core processor, after filtering and calculation, when receiving an equal-interval water droplet frequency or continuous impact or when the temperature and humidity exceed the set threshold, the signal transmitter of the device sends it to the mobile phone through the Internet of Things technology, and the duty personnel can immediately handle it after receiving the warning information.
[0011] Further, the first sensor and the second sensor are both connected to a processor; the processor is installed in the cabinet body.
[0012] The beneficial effect of adopting the above further technical solution is: Cooperating with the temperature and humidity sensors, sending the received signals to the core processor, after filtering and calculation, when receiving an equal-interval water droplet frequency or continuous impact or when the temperature and humidity exceed the set threshold, the signal transmitter of the device sends it to the mobile phone through the Internet of Things technology, and the duty personnel can immediately handle it after receiving the warning information.
[0013] Further, the processor is connected to a signal transmitter, and the signal transmitter is connected to a mobile terminal through the Internet of Things technology.
[0014] The beneficial effect of adopting the above further technical solution is: The alarm information can be fed back to the mobile phone side for timely handling, thereby improving the reliability of the equipment and the availability of the fan. Using the Internet of Things technology, a mobile phone can monitor all the fans in the station at the same time, which is convenient and effective.
[0015] Furthermore, a spare backplane and spare terminal blocks are installed in the cabinet body. The processor is installed on the spare backplane and is connected to the spare terminal blocks. A filter circuit is installed in the processor.
[0016] The beneficial effects of adopting the above further technical solution are as follows: The processor is installed on the spare backplane in the cabinet body and is powered from the spare terminal blocks, which facilitates the installation and maintenance of the processor.
[0017] Furthermore, the second sensor is a temperature sensor and a humidity sensor, or the second sensor is a temperature and humidity sensor.
[0018] The beneficial effects of adopting the above further technical solution are as follows: It is convenient to select the type of the second sensor according to actual needs.
[0019] Furthermore, the first sensor is a gravity-type water droplet frequency sensor.
[0020] The beneficial effects of adopting the above further technical solution are as follows: By setting an equal-interval water droplet frequency or a continuous impact frequency to collect pipeline leakage information, the irregular vibration during the operation of the fan can be filtered out.
[0021] Furthermore, the first sensor is a gravity sensor, a water level sensor, a water droplet sensor or a rain sensor.
[0022] The beneficial effects of adopting the above further technical solution are as follows: It is convenient to select the type of the first sensor according to actual needs.
[0023] In addition, the present invention also provides an online monitoring method for pipeline leakage of a wind turbine water-cooled converter. Based on the online monitoring device for pipeline leakage of a wind turbine water-cooled converter described in any one of the above, the online monitoring method for pipeline leakage of a wind turbine water-cooled converter includes: determining whether there is a leakage water frequency of the pipeline of the wind turbine water-cooled converter; when there is a leakage water frequency of the pipeline of the wind turbine water-cooled converter, giving an early warning of the pipeline leakage of the wind turbine water-cooled converter.
[0024] The beneficial effects of adopting the technical solution of the present invention are as follows: It can monitor the pipeline leakage situation in the converter in real time, can replace the positions of various sensors according to different models, can reliably monitor all models, and is convenient to install. It can effectively monitor in the early stage of leakage, prevent the damage of components and other accidents, and reduce economic losses.
[0025] Further, the leakage water frequency includes: equally spaced water droplet frequency or continuous impact frequency; the step of determining the leakage water frequency for determining whether there is a leakage in the water-cooled converter pipeline of the wind turbine includes: determining whether there is a leakage water frequency in the water-cooled converter pipeline of the wind turbine, determining whether the humidity exceeds a second preset value, and determining whether the temperature exceeds a third preset value; when there is a leakage water frequency in the water-cooled converter pipeline of the wind turbine, the step of giving a warning of the leakage in the water-cooled converter pipeline of the wind turbine includes: when there is a leakage water frequency in the water-cooled converter pipeline of the wind turbine, or when the humidity exceeds the second preset value, or when the temperature exceeds the third preset value, giving a warning of the leakage in the water-cooled converter pipeline of the wind turbine.
[0026] The beneficial effect of adopting the above further technical solution is that when the processor receives the pipeline leakage signal on the sensor or the temperature and humidity exceed the set threshold, it sends an instruction to the signal transmitter, and then the signal transmitter timely sends the alarm signal to the mobile terminal through the Internet of Things technology, and the on-duty personnel can carry out defect elimination work according to the alarm information as planned.
[0027] Advantages of additional aspects of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 It is a schematic structural diagram of an on-line monitoring device for leakage of a water-cooled converter pipeline of a wind turbine provided by an embodiment of the present invention.
[0029] Figure 2 It is a schematic principle diagram of an on-line monitoring device for leakage of a water-cooled converter pipeline of a wind turbine provided by an embodiment of the present invention.
[0030] Figure 3 It is a schematic flow block diagram of an on-line monitoring method for leakage of a water-cooled converter pipeline of a wind turbine provided by an embodiment of the present invention.
[0031] Explanation of reference numerals in the drawings: 1, cabinet; 2, water-cooled converter pipeline of wind turbine; 3, first sensor; 4, second sensor; 5, processor; 6, signal transmitter; 7, mobile terminal. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0032] The principles and features of the present invention will be described below with reference to the accompanying drawings. The embodiments given are only for explaining the present invention and are not intended to limit the scope of the present invention.
[0033] As Figure 1 and Figure 2As shown in the figure, an on-line monitoring device for leakage of the water-cooled converter pipeline of a wind turbine generator set provided by an embodiment of the present invention includes: a cabinet 1, a water-cooled converter pipeline 2 of a wind turbine generator set, and a plurality of first sensors 3 for detecting leakage of the water-cooled converter pipeline of the wind turbine generator set. The water-cooled converter pipeline 2 of the wind turbine generator set is installed in the cabinet 1, and the plurality of first sensors 3 are installed at the bottom of the cabinet 1 and below the water-cooled converter pipeline 2 of the wind turbine generator set.
[0034] The beneficial effects of adopting the technical solution of the present invention are as follows: The leakage condition of the pipeline in the converter is monitored in real time. The positions of the sensors can be replaced according to different models, and all models can be reliably monitored. The installation is convenient. It can effectively monitor in the early stage of leakage, prevent the damage of components and other accidents, and reduce economic losses.
[0035] Among them, the first sensor can be in the form of a plate structure or a box body with an open top.
[0036] A plurality of first sensors are arranged in an array at the bottom of the cabinet, and the plurality of first sensors are on the same plane.
[0037] By designing an on-line monitoring device for leakage of the water-cooled converter pipeline of a wind turbine generator set, the leakage condition of the pipeline (the water-cooled converter pipeline of the wind turbine generator set) in the converter is monitored in real time. The positions of the sensors can be replaced according to different models, and all models can be reliably monitored. The installation is convenient. The alarm information can be fed back to the mobile phone for timely processing, thereby improving the reliability of the equipment and the availability of the wind turbine.
[0038] Such as Figure 1 and Figure 2 As shown in the figure, further, a second sensor 4 for detecting temperature and humidity is installed in the cabinet 1.
[0039] The beneficial effects of adopting the above further technical solution are as follows: Used in cooperation with the temperature and humidity sensor, the received signal is sent to the core processor. After filtering and calculation, when receiving an equal-interval water droplet frequency or continuous impact or when the temperature and humidity exceed the set threshold, the signal transmitter of the device sends it to the mobile phone through the Internet of Things technology. The on-duty personnel can immediately handle the early warning information.
[0040] Such as Figure 1 and Figure 2 As shown in the figure, further, the first sensor 3 and the second sensor 4 are both connected to a processor 5; the processor 5 is installed in the cabinet 1.
[0041] The beneficial effects of adopting the above further technical solution are as follows: When used in conjunction with a temperature and humidity sensor, the received signal is sent to the core processor. After filtering and calculation, when an equally spaced water droplet frequency or continuous impact is received, or when the temperature and humidity exceed the set threshold, the device signal transmitter sends the signal to the mobile phone via Internet of Things technology. The on-duty personnel can immediately handle the warning information upon receipt.
[0042] As Figure 1 and Figure 2 shown, further, the processor 5 is connected to a signal transmitter 6, and the signal transmitter 6 is connected to a mobile terminal 7 via Internet of Things technology.
[0043] The beneficial effects of adopting the above further technical solution are as follows: The alarm information can be fed back to the mobile phone side for timely processing, thereby improving the reliability of the equipment and the availability of the fan. Using Internet of Things technology, one mobile phone can monitor all the fans in the station at the same time, which is convenient and effective.
[0044] As Figure 1 and Figure 2 shown, further, a spare backplane and spare terminal blocks are installed in the cabinet 1, the processor 5 is installed on the spare backplane, and the processor 5 is connected to the spare terminal blocks; a filter circuit is installed in the processor 5.
[0045] The beneficial effects of adopting the above further technical solution are as follows: The processor is installed on the spare backplane in the cabinet and gets power from the spare terminal blocks. This facilitates the installation and maintenance of the processor.
[0046] Further, the second sensor 4 is a temperature sensor and a humidity sensor, or the second sensor 4 is a temperature and humidity sensor.
[0047] The beneficial effects of adopting the above further technical solution are as follows: It is convenient to select the type of the second sensor according to actual needs.
[0048] Further, the first sensor 3 is a gravity type water droplet frequency sensor.
[0049] The beneficial effects of adopting the above further technical solution are as follows: By setting the equally spaced water droplet frequency or continuous impact frequency to collect pipeline leakage information, the irregular vibrations during the operation of the fan can be filtered out.
[0050] Further, the first sensor 3 is a gravity sensor, a water level sensor, a water droplet sensor or a rain sensor.
[0051] The beneficial effects of adopting the above further technical solution are as follows: It is convenient to select the type of the first sensor according to actual needs.
[0052] The present invention designs and installs a gravity-type water droplet frequency receiving sensor (the first sensor), which is used in cooperation with a temperature and humidity sensor (the second sensor). The received signal is sent to the core processor (the processor). After filtering and calculation, when an equally spaced water droplet frequency or continuous impact is received, or when the temperature and humidity exceed the set threshold, the device signal transmitter (the signal transmitter) sends the signal to the mobile phone (the mobile terminal) through the Internet of Things technology. The duty personnel can immediately handle the warning information when they receive it.
[0053] The present invention fills the blank of the lack of monitoring for water-cooled pipeline leakage in the water-cooled converter cabinet in the past. Compared with the previous monitoring by the fan monitoring background, the present invention has better timeliness and predictability. It can effectively monitor in the early stage of leakage, prevent the damage of components and other accidents from occurring, reduce economic losses, and use the Internet of Things technology. One mobile phone can monitor all the fans in the station at the same time, which is convenient and effective.
[0054] A gravity-type water droplet frequency sensor is installed below the water-cooled converter pipeline of the fan (the water-cooled converter pipeline of the wind turbine generator set), covering the entire bottom as much as possible. By setting an equally spaced water droplet frequency or continuous impact frequency, the pipeline leakage information can be collected, and the irregular vibration during the operation of the fan can be filtered out. At the same time, a temperature and humidity sensor is installed in the cabinet. The two sensors are connected to the core processor, and the core processor (the processor) is installed on the spare backplane in the converter control cabinet (the cabinet body), and power is taken from the spare terminal block. When the core processor receives the pipeline leakage signal on the sensor or the temperature and humidity exceed the set threshold, it sends an instruction to the signal transmitter, and then the signal transmitter timely sends the alarm signal to the mobile phone end (the mobile terminal) through the Internet of Things technology. The duty personnel can carry out defect elimination work according to the alarm information as planned.
[0055] As Figure 3 shown, in addition, the present invention also provides an online monitoring method for water-cooled converter pipeline leakage of a wind turbine generator set. Based on the online monitoring device for water-cooled converter pipeline leakage of a wind turbine generator set described in any one of the above, the online monitoring method for water-cooled converter pipeline leakage of a wind turbine generator set includes: judging whether there is a leakage water frequency of the water-cooled converter pipeline of the wind turbine generator set; when there is a leakage water frequency of the water-cooled converter pipeline of the wind turbine generator set, giving a warning of water-cooled converter pipeline leakage of the wind turbine generator set.
[0056] The beneficial effects of adopting the technical solution of the present invention are: real-time monitoring of the pipeline leakage situation in the converter, the positions of the sensors can be changed according to different models, reliable monitoring can be carried out for all models, and the installation is convenient. It can effectively monitor in the early stage of leakage, prevent the damage of components and other accidents from occurring, and reduce economic losses.
[0057] Furthermore, the leakage water frequency includes: equally spaced water droplet frequency or continuous impact frequency; the step of judging the leakage water frequency for whether there is a leakage in the water-cooled converter pipeline of the wind turbine includes: judging whether there is a leakage water frequency for the water-cooled converter pipeline of the wind turbine, judging whether the humidity exceeds a second preset value, and judging whether the temperature exceeds a third preset value; when there is a leakage water frequency for the water-cooled converter pipeline of the wind turbine, the step of giving a leakage warning for the water-cooled converter pipeline of the wind turbine includes: when there is a leakage water frequency for the water-cooled converter pipeline of the wind turbine, or when the humidity exceeds the second preset value, or when the temperature exceeds the third preset value, giving a leakage warning for the water-cooled converter pipeline of the wind turbine.
[0058] The beneficial effect of adopting the above further technical solution is that when the processor receives the pipeline leakage signal on the sensor or the temperature and humidity exceed the set threshold, it sends an instruction to the signal transmitter, and then the signal transmitter timely sends the alarm signal to the mobile terminal through the Internet of Things technology, and the on-duty personnel can carry out defect elimination work according to the alarm information as planned.
[0059] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or equivalently replace some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. An on-line monitoring device for pipeline leakage of a water-cooled converter of a wind turbine, characterized in that, Including: A cabinet body, a water-cooled converter pipeline of a wind turbine generator set, a plurality of first sensors for detecting leakage of the water-cooled converter pipeline of the wind turbine generator set, the water-cooled converter pipeline of the wind turbine generator set is installed in the cabinet body, and the plurality of first sensors are installed at the bottom of the cabinet body and below the water-cooled converter pipeline of the wind turbine generator set.
2. The on-line monitoring device for pipeline leakage of a water-cooled converter of a wind turbine according to claim 1, characterized in that, A second sensor for detecting temperature and humidity is installed in the cabinet body.
3. The on-line monitoring device for pipeline leakage of a water-cooled converter of a wind turbine according to claim 2, characterized in that, Both the first sensor and the second sensor are connected to a processor; the processor is installed in the cabinet body.
4. The on-line monitoring device for pipeline leakage of a wind turbine water-cooled converter according to claim 3, characterized in that, The processor is connected to a signal transmitter, and the signal transmitter is connected to a mobile terminal through Internet of Things technology.
5. The on-line monitoring device for pipeline leakage of a water-cooled converter of a wind turbine according to claim 3, characterized in that, A spare backplane and spare terminal blocks are installed in the cabinet body, the processor is installed on the spare backplane, and the processor is connected to the spare terminal blocks; a filter circuit is installed in the processor.
6. The on-line monitoring device for leakage of the water-cooled converter pipeline of a wind turbine according to claim 2, characterized in that, The second sensor is a temperature sensor and a humidity sensor, or the second sensor is a temperature and humidity sensor.
7. An on-line monitoring device for leakage of a water-cooled converter pipeline of a wind turbine according to claim 1, characterized in that The first sensor is a gravity-type water droplet frequency sensor.
8. An on-line monitoring device for pipeline leakage of a water-cooled converter of a wind turbine according to claim 1, characterized in that The first sensor is a gravity sensor, a water level sensor, a water droplet sensor or a rain sensor.
9. An online monitoring method for pipeline leakage of a water-cooled converter of a wind turbine, characterized in that, Based on the on-line leakage monitoring device for the water-cooled converter pipeline of a wind turbine generator set according to any one of the above claims 1 to 8, the on-line leakage monitoring method for the water-cooled converter pipeline of a wind turbine generator set includes: Judging whether there is a leakage water frequency of the water-cooled converter pipeline of the wind turbine generator set; When there is a leakage water frequency of the water-cooled converter pipeline of the wind turbine generator set, giving a warning of leakage of the water-cooled converter pipeline of the wind turbine generator set.
10. The online monitoring method for pipeline leakage of a wind turbine water-cooled converter according to claim 9, wherein, The leakage water frequency includes: equally spaced water droplet frequency or continuous impact frequency; The step of judging whether there is a leakage water frequency of the water-cooled converter pipeline of the wind turbine generator set includes: judging whether there is a leakage water frequency of the water-cooled converter pipeline of the wind turbine generator set, judging whether the humidity exceeds a second preset value, and judging whether the temperature exceeds a third preset value; The step of giving a warning of leakage of the water-cooled converter pipeline of the wind turbine generator set when there is a leakage water frequency of the water-cooled converter pipeline of the wind turbine generator set includes: when there is a leakage water frequency of the water-cooled converter pipeline of the wind turbine generator set, or when the humidity exceeds the second preset value, or when the temperature exceeds the third preset value, giving a warning of leakage of the water-cooled converter pipeline of the wind turbine generator set.