Detection method and deicing system

Abstract

The embodiment of the invention provides a detection method and a deicing system, and belongs to the technical field of wind power. The method comprises the following steps: performing wiring inspection on each component of the deicing system based on a preset electrical wiring rule, performing insulation resistance test on all electrical loops of the deicing system, and performing accuracy verification on a blade temperature sensor based on a preset temperature sampling point; and when it is determined that the deicing system passes wiring inspection, insulation resistance test and accuracy verification, high and low temperature alternating damp heat test and rain test are carried out on the deicing system. And when the deicing system passes the high and low temperature alternating damp heat test and the rain test, a lightning stroke test is carried out on the deicing system, when the deicing system passes the lightning stroke test, power-on detection is carried out on the deicing system, and detection of the deicing system is determined to be passed only when the power-on detection is passed. Through a series of strict and comprehensive tests, it is ensured that the deicing system can be put into operation successfully and run stably at the minimum times when arriving at an operation site.

Description

Technical Field

[0001] The present application relates to the field of wind power technology, and in particular to a detection method and a deicing system. Background Art

[0002] Wind farms are mostly located in high altitude, micro-meteorological and micro-topographic areas. For some areas with humid winter climates, freezing rain, rime and other weather conditions, wind turbines generally have the problem of freezing in winter. When wind turbines are operating under cold climate conditions, the blades of the wind turbines are prone to freezing. The freezing of the wind turbine blades will damage the original aerodynamic characteristics of the blades to varying degrees, reduce the output of the unit, and in severe cases, be forced to shut down, resulting in large-scale disconnection of the wind farm from the grid, and even affecting the safe and stable operation of the power grid and reliable power supply; when the wind turbine blades are frozen, the additional load and unbalanced load of the wind turbine will be increased. If the wind turbine is operated under overload or unbalanced load for a long time, the service life of the wind turbine will be shortened; when the blades are frozen, there will be ice falling off, which poses a risk of endangering personal and equipment safety. Therefore, deicing of wind turbine blades can effectively increase the grid-connected power generation of wind turbines, which is of great significance.

[0003] The deicing system can be used to prevent icing and remove ice from wind turbines. In order to ensure that the deicing system can be successfully put into operation with the least number of times and operate stably when it arrives at the operation site, higher requirements are placed on the reliability and stability of the deicing system. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the embodiments of the present application is to provide a detection method and a deicing system.

[0005] In order to achieve the above-mentioned purpose, the first aspect of the present application provides a detection method, which is applied to a deicing system. The deicing system includes multiple components, including a cabin control cabinet, a hub control cabinet, a hub power distribution cabinet, a blade power cabinet, a blower, a heater, and a blade temperature sensor. The cabin control cabinet is connected to the hub control cabinet and the hub power distribution cabinet respectively through slip rings, the hub control cabinet is connected to the blade temperature sensor through the blade power cabinet, and the hub power distribution cabinet is connected to the blower, the heater, and the blade temperature sensor respectively through the blade power cabinet. The detection method includes:

[0006] Conduct wiring checks on each component of the de-icing system based on preset electrical wiring rules;

[0007] Conduct insulation resistance tests on all electrical circuits of the de-icing system;

[0008] Accuracy verification of blade temperature sensor based on preset temperature sampling points;

[0009] After confirming that the de-icing system has passed the wiring inspection, insulation resistance test and accuracy verification, the de-icing system shall be subjected to high and low temperature alternating damp heat test and rain test;

[0010] When the de-icing system passes the high and low temperature alternating damp heat test and the rain test, the de-icing system shall be subjected to a lightning strike test;

[0011] If the de-icing system passes the lightning test, conduct a power-on test on the de-icing system;

[0012] In the case where the de-icing system passes the power-on test, it is determined that the de-icing system test has passed.

[0013] In the embodiment of the present application, the de-icing system further includes an outside temperature sensor and a power supply, the cabin control cabinet is respectively connected to the outside temperature sensor and the power supply, the power supply includes a 690V power supply and a 220V power supply, the electrical circuit of the de-icing system includes a 690V electrical circuit, a 220V electrical circuit and a 24V electrical circuit, and the insulation resistance test includes a circuit insulation resistance test and a withstand voltage test;

[0014] The 690V electrical circuit includes a 690V power supply, a cabin control cabinet, a hub power distribution cabinet, a blade power cabinet, a blower, a heater, a blade temperature sensor and a hub control cabinet. The 690V power supply, the cabin control cabinet, the hub power distribution cabinet and the blade power cabinet are connected in sequence, the blade power cabinet is respectively connected to the blower, the heater and the blade temperature sensor, and the hub control cabinet is arranged between the cabin control cabinet and the blade power cabinet.

[0015] The 220V electrical circuit includes a 220V power supply, a cabin control cabinet, a hub power distribution cabinet, a blade power cabinet, a blower, a heater, a blade temperature sensor and a hub control cabinet, wherein the 220V power supply, the cabin control cabinet, the hub power distribution cabinet and the blade power cabinet are connected in sequence, the blade power cabinet is respectively connected to the blower, the heater and the blade temperature sensor, and the hub control cabinet is arranged between the cabin control cabinet and the blade power cabinet;

[0016] The 24V electrical circuit includes an outboard temperature sensor, a cabin control cabinet, a hub control cabinet, a blade power cabinet, a blade temperature sensor and a hub power distribution cabinet, wherein the outboard temperature sensor, the cabin control cabinet, the hub control cabinet, the blade power cabinet and the blade temperature sensor are connected in sequence, and the hub power distribution cabinet is arranged between the cabin control cabinet and the blade power cabinet.

[0017] In the embodiment of the present application, the deicing system is subjected to a high and low temperature alternating damp heat test, including:

[0018] Adjust the parameters of the high and low temperature alternating damp heat test chamber based on the preset temperature parameters and humidity parameters, and place the hub control cabinet, hub power distribution cabinet and blade power cabinet into the high and low temperature alternating damp heat test chamber;

[0019] High and low temperature alternating damp heat tests were carried out on 690V electrical circuits and 220V electrical circuits respectively.

[0020] In the embodiment of the present application, the accuracy of the blade temperature sensor is checked based on the preset temperature sampling point, including:

[0021] Respectively obtain a first temperature value and a second temperature value of a blade temperature sensor and a preset thermometer at a preset temperature sampling point;

[0022] Determining whether the temperature difference between the first temperature value and the second temperature value is within a preset temperature difference range;

[0023] When the temperature difference is within the preset temperature difference range, determining that the de-icing system passes the accuracy verification;

[0024] In the event that the temperature difference is not within the preset temperature difference range, it is determined that the de-icing system has failed the accuracy verification.

[0025] In an embodiment of the present application, performing a rain test on the deicing system includes:

[0026] Based on the preset shower angle and shower time, shower operations are performed on designated components in the de-icing system, wherein the designated components include the hub control cabinet, the hub power distribution cabinet and the blade power cabinet.

[0027] In the embodiment of the present application, the lightning strike test includes an overcurrent test, an overvoltage test, and an electrostatic discharge immunity test.

[0028] In an embodiment of the present application, the blade power cabinet includes a power output point, the blade temperature sensor includes a signal output point, the signal output point includes a shielding shell, the lightning strike test includes a lightning strike simulation position and a detection point, the lightning strike simulation position includes the blade power cabinet, and the detection point includes a power output point, a signal output point and a shielding shell.

[0029] A second aspect of the present application provides a deicing system, comprising:

[0030] Engine room control cabinet;

[0031] Hub control cabinet and hub power distribution cabinet, the nacelle control cabinet is connected to the hub control cabinet and hub power distribution cabinet respectively through slip rings;

[0032] Blade power cabinet;

[0033] blower, heater, and blade temperature sensors;

[0034] The hub control cabinet is connected to the blade temperature sensor through the blade power cabinet, and the hub power distribution cabinet is respectively connected to the blower, the heater and the blade temperature sensor through the blade power cabinet.

[0035] In an embodiment of the present application, the de-icing system further includes an external temperature sensor, which is connected to the cabin control cabinet.

[0036] In an embodiment of the present application, the de-icing system also includes a power supply, which is connected to the cabin control cabinet, and the power supply includes a 690V power supply and a 220V power supply.

[0037] Through the above technical solution, the wiring of each component of the deicing system is checked based on the preset electrical wiring rules, and the insulation resistance test is performed on all electrical circuits of the deicing system, and the accuracy of the blade temperature sensor is verified based on the preset temperature sampling points; the basic performance of each component of the deicing system is ensured, and after determining that the deicing system has passed the wiring check, insulation resistance test and accuracy verification, the deicing system is subjected to high and low temperature alternating damp heat test and rain test; by changing the environment of the deicing system, the adaptability of the deicing system in various scenarios is ensured. And further, when the deicing system passes the high and low temperature alternating damp heat test and rain test, the deicing system is subjected to a lightning strike test to ensure that the deicing system has stable performance in thunderstorm weather. And when the deicing system passes the lightning strike test, the deicing system is powered on to verify the overall operating capability of the deicing system and determine whether the deicing system can operate normally. When the deicing system passes the power-on test, it is determined that the deicing system has passed the test. Through a series of rigorous and comprehensive tests, the de-icing system is factory inspected to ensure that the de-icing system has good performance before leaving the factory, and to ensure that the de-icing system can be successfully put into operation with the least number of times and operate stably when it arrives at the operation site.

[0038] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following specific implementations, they are used to explain the embodiments of the present application, but do not constitute a limitation on the embodiments of the present application. In the accompanying drawings:

[0040] Figure 1 A schematic diagram of a process flow of a detection method according to an embodiment of the present application is shown schematically;

[0041] Figure 2 The schematic diagram of the structure of the deicing system according to an embodiment of the present application is shown schematically.

[0042] Description of Reference Numerals

[0043] 100, cabin control cabinet; 110, slip ring; 200, hub control cabinet; 300, hub power distribution cabinet; 400, blade power cabinet; 500, blade temperature sensor; 610, blower; 620, heater; 700, outside cabin temperature sensor; 810, 220V power supply; 820, 690V power supply. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It should be understood that the specific implementation methods described herein are only used to illustrate and explain the embodiments of the present application, and are not used to limit the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0045] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0046] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0047] Figure 1 The following schematically shows a flow chart of a detection method according to an embodiment of the present application. Figure 1 As shown, the embodiment of the present application provides a detection method, which is applied to a deicing system. The deicing system includes multiple components, including a cabin control cabinet, a hub control cabinet, a hub power distribution cabinet, a blade power cabinet, a blower, a heater, and a blade temperature sensor. The cabin control cabinet is connected to the hub control cabinet and the hub power distribution cabinet respectively through slip rings, the hub control cabinet is connected to the blade temperature sensor through the blade power cabinet, and the hub power distribution cabinet is connected to the blower, the heater, and the blade temperature sensor through the blade power cabinet. The detection method may include the following steps:

[0048] Step S100, performing a wiring check on each component of the deicing system based on a preset electrical wiring rule;

[0049] Step S200, performing insulation resistance test on all electrical circuits of the deicing system;

[0050] Step S300, performing accuracy verification on the blade temperature sensor based on a preset temperature sampling point;

[0051] Step S400, when it is determined that the deicing system has passed the wiring inspection, insulation resistance test, and accuracy verification, a high-low temperature alternating damp heat test and a rain test are performed on the deicing system;

[0052] Step S500, when the deicing system passes the high and low temperature alternating damp heat test and the rain test, a lightning strike test is performed on the deicing system;

[0053] Step S600, when the deicing system passes the lightning strike test, a power-on test is performed on the deicing system;

[0054] Step S700: When the de-icing system passes the power-on test, determine that the de-icing system passes the test.

[0055] In this embodiment, it should be noted that the wind turbine will be affected by the cold climate when working. In order to ensure that the wind turbine can operate normally under cold climate conditions, it is necessary to reduce or avoid the icing of the wind turbine blades as much as possible. The deicing system can be used to prevent icing and deicing of the wind turbine. To ensure the effectiveness of the deicing system, higher requirements are placed on the performance of the deicing system. In this embodiment, a series of strict and effective tests are carried out before the deicing system leaves the factory to ensure that the deicing system can be successfully put into operation with the least number of times and operate stably when it arrives at the operation site.

[0056] It should be noted that the preset electrical wiring rules are determined based on the electrical wiring diagram in the design requirements of the de-icing system, and are used to characterize the wiring standards between the various components of the de-icing system. The wiring of each component of the de-icing system is checked based on the preset electrical wiring rules to ensure that the various components of the de-icing system can be accurately connected and connected in place without deviation. Specifically, the inspection is carried out against the preset electrical wiring rules to ensure that the cabin control cabinet, hub control cabinet, hub power distribution cabinet, blade power cabinet, blower, heater and blade temperature sensor in the de-icing system can be accurately connected. It can be understood that in one embodiment, the wind turbine blades in the wind turbine set usually include multiple blades. Taking three blades as an example, the blade power cabinet of the de-icing system can be set separately for each blade, that is, it includes three blade power cabinets. In the case where there are multiple blade power cabinets, the preset electrical wiring rules will be used to check whether the connection between each blade power cabinet and between each blade power cabinet and other components is accurate.

[0057] It is understandable that the de-icing system may include access to multiple different power sources, such as a 690V power source and a 220V power source; it may also include access to a 24V communication cable for signal acquisition. Different electrical circuits may be formed for different cable accesses, and insulation resistance tests may be performed on each electrical circuit of the de-icing system to ensure that the electrical function of the de-icing system is normal. In one embodiment, a megohmmeter may be used for testing, and the megohmmeter may be suitable for measuring the resistance value of various insulating materials and the insulation resistance of transformers, motors, and electrical equipment.

[0058] It should be noted that the blade temperature sensor is arranged inside the fan blade to collect the temperature inside the fan blade. The accuracy of the blade temperature sensor will affect the accuracy of the de-icing system control. Therefore, in this embodiment, the accuracy of the blade temperature sensor is checked to ensure the accuracy of the blade temperature sensor. It is understandable that in this embodiment, the de-icing system may also include an outdoor temperature sensor, which is arranged outside the cabin to collect the temperature outside the cabin. Therefore, in order to improve the effectiveness of the de-icing system, the accuracy of the outdoor temperature sensor also needs to be checked.

[0059] It is understandable that when performing the insulation resistance test on all electrical circuits of the de-icing system and the accuracy verification on the blade temperature sensor, the order of the two checks is not fixed, and the order of the two checks can be determined based on the convenience of the actual application scenario.

[0060] In this embodiment, it should be noted that in order to improve the adaptability of the deicing system to various environments, it is necessary to test the performance of the deicing system in various environments. In this embodiment, the performance of the deicing system in high temperature, low temperature, alternating humidity and heat or constant test temperature environment parameters is verified through high and low temperature alternating humidity and heat test, and the anti-splashing function of the deicing system is verified through rain test. Specifically, when it is determined that the deicing system has passed the wiring inspection, insulation resistance test and accuracy verification, the deicing system is subjected to high and low temperature alternating humidity and heat test and rain test.

[0061] It should be noted that in order to further improve the adaptability of the de-icing system in extreme environments, in this embodiment, the de-icing system will also be subjected to a lightning test before it leaves the factory to ensure the de-icing system's ability to work in thunderstorm weather. Specifically, after determining that the de-icing system has passed the high and low temperature alternating damp heat test and the rain test, the de-icing system is subjected to a lightning test. When ensuring that the de-icing system has passed the lightning test, the de-icing system is powered on as a whole to ensure that the de-icing system operates normally.

[0062] In this embodiment, the wiring of each component of the deicing system is checked based on the preset electrical wiring rules, and the insulation resistance test is performed on all electrical circuits of the deicing system, and the accuracy of the blade temperature sensor is checked based on the preset temperature sampling points; the basic performance of each component of the deicing system is ensured, and when it is determined that the deicing system has passed the wiring check, insulation resistance test and accuracy check, the deicing system is subjected to a high and low temperature alternating damp heat test and a rain test; by changing the environment of the deicing system, the adaptability of the deicing system in various scenarios is ensured. And further, when the deicing system passes the high and low temperature alternating damp heat test and the rain test, the deicing system is subjected to a lightning strike test to ensure that the deicing system has stable performance in thunderstorm weather. And when the deicing system passes the lightning strike test, the deicing system is powered on to verify the overall operating capability of the deicing system and determine whether the deicing system can operate normally. When the deicing system passes the power-on test, it is determined that the deicing system has passed the test. Through a series of rigorous and comprehensive tests, the de-icing system is factory inspected to ensure that the de-icing system has good performance before leaving the factory, and to ensure that the de-icing system can be successfully put into operation with the least number of times and operate stably when it arrives at the operation site.

[0063] Figure 1 FIG. 1 is a flow chart of a detection method in one embodiment. It should be understood that although Figure 1 The steps in the flowchart are shown in sequence as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified in this document, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. Moreover, Figure 1 At least part of the steps may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least part of the sub-steps or stages of other steps.

[0064] In one embodiment, the deicing system further includes an external temperature sensor and a power supply, the cabin control cabinet is connected to the external temperature sensor and the power supply respectively, the power supply includes a 690V power supply and a 220V power supply, the electrical circuit of the deicing system includes a 690V electrical circuit, a 220V electrical circuit and a 24V electrical circuit, and the insulation resistance test includes a circuit insulation resistance test and a withstand voltage test;

[0065] The 690V electrical circuit includes a 690V power supply, a cabin control cabinet, a hub power distribution cabinet, a blade power cabinet, a blower, a heater, a blade temperature sensor and a hub control cabinet. The 690V power supply, the cabin control cabinet, the hub power distribution cabinet and the blade power cabinet are connected in sequence, the blade power cabinet is respectively connected to the blower, the heater and the blade temperature sensor, and the hub control cabinet is arranged between the cabin control cabinet and the blade power cabinet.

[0066] The 220V electrical circuit includes a 220V power supply, a cabin control cabinet, a hub power distribution cabinet, a blade power cabinet, a blower, a heater, a blade temperature sensor and a hub control cabinet, wherein the 220V power supply, the cabin control cabinet, the hub power distribution cabinet and the blade power cabinet are connected in sequence, the blade power cabinet is respectively connected to the blower, the heater and the blade temperature sensor, and the hub control cabinet is arranged between the cabin control cabinet and the blade power cabinet;

[0067] The 24V electrical circuit includes an outboard temperature sensor, a cabin control cabinet, a hub control cabinet, a blade power cabinet, a blade temperature sensor and a hub power distribution cabinet, wherein the outboard temperature sensor, the cabin control cabinet, the hub control cabinet, the blade power cabinet and the blade temperature sensor are connected in sequence, and the hub power distribution cabinet is arranged between the cabin control cabinet and the blade power cabinet.

[0068] In this embodiment, it should be noted that the electrical circuit of the deicing system includes a 690V electrical circuit, a 220V electrical circuit and a 24V electrical circuit. When the deicing system is subjected to an insulation resistance test, each electrical circuit needs to be tested separately. Among them, the 690V electrical circuit includes a 690V power supply, a cabin control cabinet, a hub power distribution cabinet, a blade power cabinet connected in sequence, and a blower, a heater and a blade temperature sensor connected to the blade power cabinet respectively, and a hub control cabinet arranged between the cabin control cabinet and the blade power cabinet; the 220V electrical circuit includes a 220V power supply, a cabin control cabinet, a hub power distribution cabinet, a blade power cabinet connected in sequence, and a blower, a heater and a blade temperature sensor connected to the blade power cabinet respectively, and a hub control cabinet arranged between the cabin control cabinet and the blade power cabinet; the 24V electrical circuit includes an outboard temperature sensor, a cabin control cabinet, a hub control cabinet, a blade power cabinet and a blade temperature sensor connected in sequence, and a hub power distribution cabinet arranged between the cabin control cabinet and the blade power cabinet.

[0069] Insulation resistance test includes loop insulation resistance test and withstand voltage test. Loop insulation resistance test is tested by insulation resistance meter to measure the resistance value of various insulating materials and the insulation resistance of transformers, motors and electrical equipment; withstand voltage test is to verify the electrical insulation performance of transient voltage.

[0070] In this embodiment, the electrical function of the de-icing system is effectively verified through the loop insulation resistance test and the voltage withstand test, thereby ensuring the working performance of the de-icing system.

[0071] In one embodiment, the de-icing system is subjected to a high and low temperature alternating damp heat test, including:

[0072] Adjust the parameters of the high and low temperature alternating damp heat test chamber based on the preset temperature parameters and humidity parameters, and place the hub control cabinet, hub power distribution cabinet and blade power cabinet into the high and low temperature alternating damp heat test chamber;

[0073] High and low temperature alternating damp heat tests were carried out on 690V electrical circuits and 220V electrical circuits respectively.

[0074] In this embodiment, it should be noted that when the high and low temperature alternating damp heat test is conducted on the deicing system, the hub control cabinet, hub power distribution cabinet and blade power cabinet in the deicing system are tested. The hub control cabinet, hub power distribution cabinet and blade power cabinet are placed in a high and low temperature alternating damp heat test box, and the parameters of the high and low temperature alternating damp heat test box are adjusted based on the preset temperature parameters and humidity parameters. Among them, the high and low temperature alternating damp heat test box can set the low temperature, high temperature, test time and program at one time, and the equipment is run by the self-propelled program. It is an essential test equipment in the fields of aviation, automobiles, home appliances, scientific research, etc., and is used to test and determine the parameters and performance of electrical, electronic and other products and materials after the temperature environment changes of high temperature, low temperature, or constant tests. The preset temperature parameters and humidity parameters are empirical parameters determined based on the operating scenario of the wind turbine, at least including the high-frequency temperature and humidity in the operating scenario of the wind turbine and the temperature and humidity in some extreme scenarios.

[0075] It is understandable that in this embodiment, when the high and low temperature alternating damp heat test is conducted, it is conducted on the 690V electrical circuit and the 220V electrical circuit respectively. The high and low temperature alternating damp heat test may be conducted on all components of the de-icing system or on some components of the de-icing system. In this embodiment, the high and low temperature alternating damp heat test is preferentially conducted on the hub control cabinet, the hub power distribution cabinet and the blade power cabinet of the de-icing system. It is understandable that the high and low temperature alternating damp heat test for the hub control cabinet, the hub power distribution cabinet and the blade power cabinet may be conducted on the hub control cabinet, the hub power distribution cabinet and the blade power cabinet respectively, or the high and low temperature alternating damp heat test for the hub control cabinet, the hub power distribution cabinet and the blade power cabinet may be conducted on the hub control cabinet, the hub power distribution cabinet and the blade power cabinet at the same time.

[0076] In this embodiment, the high and low temperature alternating damp heat test is used to simulate the operating environment of the deicing system, thereby improving the adaptability of the deicing system.

[0077] In one embodiment, the accuracy of the blade temperature sensor is checked based on the preset temperature sampling point, including:

[0078] Respectively obtain a first temperature value and a second temperature value of a blade temperature sensor and a preset thermometer at a preset temperature sampling point;

[0079] Determining whether the temperature difference between the first temperature value and the second temperature value is within a preset temperature difference range;

[0080] When the temperature difference is within the preset temperature difference range, determining that the de-icing system passes the accuracy verification;

[0081] In the event that the temperature difference is not within the preset temperature difference range, it is determined that the de-icing system has failed the accuracy verification.

[0082] In this embodiment, it should be noted that when the temperature sensor of the de-icing system is calibrated, a control test is adopted, and a standard preset thermometer is used as a control of the temperature sensor of the de-icing system to determine whether the temperature sensor of the de-icing system has a reading deviation. In one embodiment, the preset thermometer can be a testo720 thermometer. It can be understood that the de-icing system can include a blade temperature sensor and an external temperature sensor. In one embodiment, more or less temperature sensors can also be included, and accuracy calibration is required for all temperature sensors included in the de-icing system. The preset temperature sampling point is a predetermined temperature value for temperature calibration. Taking the calibration of the blade temperature sensor as an example, when performing the accuracy calibration, the first temperature value and the second temperature value of the blade temperature sensor and the preset thermometer at the preset temperature sampling point are respectively obtained; and it is determined whether the temperature difference between the first temperature value and the second temperature value is within the preset temperature difference range. If the temperature difference is within the preset temperature difference range, it is determined that the de-icing system passes the accuracy calibration, otherwise it is determined that the de-icing system fails the accuracy calibration. It can be understood that the preset temperature sampling point can include one or more, and the temperature range involved in the preset temperature sampling point can be adaptively adjusted based on the application scenario of the wind turbine. Taking the temperature range of the preset temperature sampling points as -10°C to 120°C as an example, if 5 preset temperature sampling points are taken, they may include -10°C, 20°C, 50°C, 80°C, and 120°C.

[0083] In this embodiment, a preset thermometer is used for comparison to ensure the reading accuracy of the temperature sensor of the deicing system, thereby improving the control accuracy of the deicing system.

[0084] In one embodiment, performing a rain test on a de-icing system includes:

[0085] Based on the preset shower angle and shower time, shower operations are performed on designated components in the de-icing system, wherein the designated components include the hub control cabinet, the hub power distribution cabinet and the blade power cabinet.

[0086] In this embodiment, it should be noted that when conducting the rain test, different components of the deicing system can be subjected to rain operations based on different application requirements, or all components of the deicing system can be subjected to the rain test. In this embodiment, the hub control cabinet, hub power distribution cabinet and blade power cabinet of the deicing system are preferentially subjected to the rain test. When conducting the rain test, the rain angle and rain time can be designed based on actual needs. For example, a rain test chamber can be used to simulate the natural water spray process to achieve the purpose of verifying the reliability, environmental adaptability and working efficiency of the test piece exposed to different rain environments in the laboratory. The rain angle is that the water column of the nozzle is a solid body with a cone angle of about 60°, the axis of the water column of the top nozzle is at an angle of 90° with the plane of the rain component, and the rain time is set to 30 minutes.

[0087] In this embodiment, the anti-splashing capability of the deicing system is improved through a rain test, thereby ensuring the adaptability of the deicing system to the environment.

[0088] In one embodiment, the lightning strike test includes an overcurrent test, an overvoltage test, and an electrostatic discharge immunity test.

[0089] In this embodiment, it should be noted that the de-icing system is likely to be subject to external power supply overvoltage interference or natural disasters such as lightning strikes during long-term operation, so a lightning test is required to ensure its safe and reliable operation. If a lightning test is not performed before formal use, it may cause safety accidents such as equipment damage, short circuit, leakage, etc. Among them, the lightning test includes overcurrent test, overvoltage test and electrostatic discharge immunity test. Overcurrent test refers to the current flowing through the circuit exceeding the design or rated value. If there is no effective overcurrent protection measure, it may cause circuit damage or even cause a safety accident. Overvoltage test refers to testing the withstand voltage of the circuit or equipment to detect the resistance of the de-icing system to voltage overload. Electrostatic discharge is a ubiquitous natural phenomenon and a highly harmful electromagnetic energy. By detecting whether the performance of the de-icing system meets the requirements of the corresponding standards under the electrostatic discharge environment, the anti-interference ability of the de-icing system is improved.

[0090] Specifically, in one embodiment, the blade power cabinet includes a power output point, the blade temperature sensor includes a signal output point, the signal output point includes a shielding shell, the lightning strike test includes a lightning strike simulation position and a detection point, the lightning strike simulation position includes the blade power cabinet, and the detection point includes a power output point, a signal output point and a shielding shell.

[0091] It should be noted that when conducting a lightning strike test, a simulated lightning strike is performed at the lightning strike simulation position, and the detection point after the lightning strike is detected to determine whether the detection point is affected by the lightning strike. The blade power cabinet is a high-frequency position where a lightning strike may occur, and the power output point of the blade power cabinet, the signal output point of the blade temperature sensor, and the shielded shell of the signal output point are high-frequency positions where lightning current enters. In this embodiment, the blade power cabinet is the lightning strike simulation position, and the power output point of the blade power cabinet, the signal output point of the blade temperature sensor, and the shielded shell of the signal output point are used as the detection point. It can be understood that in one embodiment, the lightning strike simulation position and the detection point can be adaptively adjusted.

[0092] In this embodiment, the location of the lightning strike test is determined to improve the effectiveness of the lightning strike test, thereby ensuring the lightning resistance of the deicing system and improving the performance of the deicing system.

[0093] refer to Figure 2 , an embodiment of the present application provides a deicing system, comprising:

[0094] Cabin control cabinet 100;

[0095] The hub control cabinet 200 and the hub power distribution cabinet 300, the nacelle control cabinet 100 are respectively connected to the hub control cabinet 200 and the hub power distribution cabinet 300 through the slip ring 110;

[0096] Blade power cabinet 400;

[0097] Blower 610, heater 620 and blade temperature sensor 500;

[0098] The hub control cabinet 200 is connected to the blade temperature sensor 500 through the blade power cabinet 400 , and the hub power distribution cabinet 300 is respectively connected to the blower 610 , the heater 620 and the blade temperature sensor 500 through the blade power cabinet 400 .

[0099] In one embodiment, the de-icing system further includes an external temperature sensor 700 , which is connected to the cabin control cabinet 100 .

[0100] In one embodiment, the de-icing system further includes a power supply, which is connected to the cabin control cabinet 100 , and includes a 690V power supply 820 and a 220V power supply 810 .

[0101] In this embodiment, it should be noted that the de-icing system includes a cabin control cabinet 100, a hub control cabinet 200, a hub power distribution cabinet 300, a blade power cabinet 400, a blower 610, a heater 620 and a blade temperature sensor 500. The cabin control cabinet 100 is connected to the hub control cabinet 200 and the hub power distribution cabinet 300 respectively through a slip ring 110, the hub control cabinet 200 is connected to the blade temperature sensor 500 through the blade power cabinet 400, and the hub power distribution cabinet 300 is connected to the blower 610, the heater 620 and the blade temperature sensor 500 respectively through the blade power cabinet 400. The de-icing system also includes a 690V power supply 820, a 220V power supply 810 and an outdoor temperature sensor 700, and the 690V power supply 820, the 220V power supply 810 and the outdoor temperature sensor 700 are all connected to the cabin control cabinet 100.

[0102] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0103] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0104] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A detection method, characterized in that: Applied to a deicing system, the deicing system includes a plurality of components, including a cabin control cabinet, a hub control cabinet, a hub power distribution cabinet, a blade power cabinet, a blower, a heater, and a blade temperature sensor. The cabin control cabinet is connected to the hub control cabinet and the hub power distribution cabinet respectively through slip rings, the hub control cabinet is connected to the blade temperature sensor through the blade power cabinet, the hub power distribution cabinet is connected to the blower, the heater, and the blade temperature sensor respectively through the blade power cabinet, and the detection method includes: Performing a wiring check on each component of the de-icing system based on preset electrical wiring rules; Conduct insulation resistance tests on all electrical circuits of the de-icing system; Performing accuracy verification on the blade temperature sensor based on preset temperature sampling points; After confirming that the deicing system has passed the wiring inspection, insulation resistance test and accuracy verification, the deicing system is subjected to a high and low temperature alternating damp heat test and a rain test; When the deicing system passes the high and low temperature alternating damp heat test and the rain test, a lightning strike test is performed on the deicing system; When the deicing system passes the lightning strike test, conducting a power-on test on the deicing system; In the case where the de-icing system passes the power-on test, it is determined that the de-icing system passes the test.

2. The detection method according to claim 1, characterized in that The deicing system further includes an outside temperature sensor and a power supply, the cabin control cabinet is connected to the outside temperature sensor and the power supply respectively, the power supply includes a 690V power supply and a 220V power supply, the electrical circuit of the deicing system includes a 690V electrical circuit, a 220V electrical circuit and a 24V electrical circuit, and the insulation resistance test includes a circuit insulation resistance test and a withstand voltage test; The 690V electrical circuit includes the 690V power supply, the cabin control cabinet, the hub power distribution cabinet, the blade power cabinet, the blower, the heater, the blade temperature sensor and the hub control cabinet, wherein the 690V power supply, the cabin control cabinet, the hub power distribution cabinet and the blade power cabinet are connected in sequence, the blade power cabinet is respectively connected to the blower, the heater and the blade temperature sensor, and the hub control cabinet is arranged between the cabin control cabinet and the blade power cabinet; The 220V electrical circuit includes the 220V power supply, the cabin control cabinet, the hub power distribution cabinet, the blade power cabinet, the blower, the heater, the blade temperature sensor and the hub control cabinet, wherein the 220V power supply, the cabin control cabinet, the hub power distribution cabinet and the blade power cabinet are connected in sequence, the blade power cabinet is respectively connected to the blower, the heater and the blade temperature sensor, and the hub control cabinet is arranged between the cabin control cabinet and the blade power cabinet; The 24V electrical circuit includes the outboard temperature sensor, the cabin control cabinet, the hub control cabinet, the blade power cabinet, the blade temperature sensor and the hub power distribution cabinet, wherein the outboard temperature sensor, the cabin control cabinet, the hub control cabinet, the blade power cabinet and the blade temperature sensor are connected in sequence, and the hub power distribution cabinet is arranged between the cabin control cabinet and the blade power cabinet.

3. The detection method according to claim 2, characterized in that: The high and low temperature alternating damp heat test on the deicing system includes: Adjusting the parameters of the high and low temperature alternating damp heat test box based on preset temperature parameters and humidity parameters, and placing the hub control cabinet, the hub power distribution cabinet and the blade power cabinet into the high and low temperature alternating damp heat test box; High and low temperature alternating damp heat tests were carried out on 690V electrical circuits and 220V electrical circuits respectively.

4. The detection method according to claim 1, characterized in that: The accuracy check of the blade temperature sensor based on the preset temperature sampling point includes: Respectively obtain a first temperature value and a second temperature value of the blade temperature sensor and the preset thermometer at a preset temperature sampling point; Determining whether a temperature difference between the first temperature value and the second temperature value is within a preset temperature difference range; In the case where the temperature difference is within the preset temperature difference range, determining that the deicing system passes the accuracy verification; When the temperature difference is not within the preset temperature difference range, it is determined that the de-icing system has failed the accuracy verification.

5. The detection method according to claim 1, characterized in that: The rain test on the deicing system comprises: Based on the preset shower angle and shower time, shower operations are performed on designated components in the deicing system respectively, wherein the designated components include the hub control cabinet, the hub power distribution cabinet and the blade power cabinet.

6. The detection method according to claim 1, characterized in that: The lightning strike test includes an overcurrent test, an overvoltage test and an electrostatic discharge immunity test.

7. The detection method according to claim 6, characterized in that: The blade power cabinet includes a power output point, the blade temperature sensor includes a signal output point, the signal output point includes a shielding shell, the lightning strike test includes a lightning strike simulation position and a detection point, the lightning strike simulation position includes the blade power cabinet, and the detection point includes the power output point, the signal output point and the shielding shell.

8. A de-icing system, characterized in that: include: Engine room control cabinet; A hub control cabinet and a hub power distribution cabinet, wherein the cabin control cabinet is connected to the hub control cabinet and the hub power distribution cabinet respectively through slip rings; Blade power cabinet; blower, heater, and blade temperature sensors; The hub control cabinet is connected to the blade temperature sensor through the blade power cabinet, and the hub power distribution cabinet is respectively connected to the blower, the heater and the blade temperature sensor through the blade power cabinet.

9. The de-icing system according to claim 8, characterized in that: The de-icing system further includes an external temperature sensor, which is connected to the cabin control cabinet.

10. The de-icing system according to claim 8, characterized in that The de-icing system also includes a power supply, which is connected to the cabin control cabinet and includes a 690V power supply and a 220V power supply.

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