CN115306639A - Main control cabinet system with heating function and heating control method - Google Patents
Main control cabinet system with heating function and heating control method Download PDFInfo
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- CN115306639A CN115306639A CN202211007222.7A CN202211007222A CN115306639A CN 115306639 A CN115306639 A CN 115306639A CN 202211007222 A CN202211007222 A CN 202211007222A CN 115306639 A CN115306639 A CN 115306639A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 112
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000001816 cooling Methods 0.000 claims description 22
- 230000017525 heat dissipation Effects 0.000 claims description 3
- 230000009467 reduction Effects 0.000 abstract description 3
- 238000010248 power generation Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 10
- 230000006870 function Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000013024 troubleshooting Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/04—Automatic control; Regulation
- F03D7/042—Automatic control; Regulation by means of an electrical or electronic controller
- F03D7/047—Automatic control; Regulation by means of an electrical or electronic controller characterised by the controller architecture, e.g. multiple processors or data communications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/60—Cooling or heating of wind motors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention belongs to the field of wind power generation main control cabinets, and particularly relates to a main control cabinet system with a heating function and a heating control method. The method comprises the following steps: and judging whether a yaw starting control instruction sent by the master control exists, if so, executing the yaw starting control instruction, and if not, heating the master control cabinet by adopting a fan brake resistor according to the temperature and humidity conditions in the master control cabinet. The method uses the original fan brake resistor in the wind generating set to heat the main control cabinet, improves the utilization rate of each component in the main control cabinet, maintains the stability of the working temperature of each component in the main control cabinet, avoids the performance reduction or damage of the components in the main control cabinet caused by the over low temperature of each component in the main control cabinet, and ensures the working efficiency and the service life of the wind generating set.
Description
Technical Field
The invention belongs to the field of wind power generation main control cabinets, and particularly relates to a main control cabinet system with a heating function and a heating control method.
Background
The main control cabinet is used as an important component of a main control system of the wind generating set, and various lubricating systems, heat dissipation systems, heating systems, lighting systems and the like in the engine room are controlled through information acquired by sensors in the engine room of the wind generating set. Meanwhile, the main control cabinet realizes information interaction with a PLC control system of the tower footing control cabinet through optical fiber communication, and realizes information interaction with a pitch control system through CAN communication.
The main control cabinet is internally provided with a PLC module, a terminal, a miniature circuit breaker (air switch), a motor protection switch, a relay, a lightning protection module, an intermediate relay, a special functional element and other components. China is rich in wind resources in regions such as northwest, northeast, north China and plateaus, wind generating sets work in the field environment, and the condition that the ambient temperature is too low can appear in these regions in winter, and wind resources have the unstable characteristics themselves, if shut down for a long time under the low temperature environment, when the main control cabinet needs to be started, can cause the performance of some devices in the main control cabinet to descend, and then cause the difficulty of starting up the unit and the decline of generated energy, when the condition is serious, can cause the device large tracts of land damage in the main control cabinet even and can't start up, influence unit life.
In the chinese utility model patent of the publication number of authorizing CN207033655U, the publication date of authorizing being 2018, 2, 23, the device adopts a heater or a cooler to heat or cool the cabinet body, and the quantity through increasing or reducing the end cap is adjusted to the air-out speed, realizing the adjustment of the temperature in the cabinet body. The more the exhaust vent that is stopped up by the end cap, then temperature regulation apparatus's air-out speed is faster, realizes the quick circulation of heat in the cabinet more easily, and then reduces the difference in temperature of the inside different positions of master control cabinet. The temperature adjusting device adopts the heater with fixed power to heat, and the heaters with different powers need to be replaced or the number of the heaters needs to be increased when aiming at a normal-temperature type unit and a low-temperature type unit.
Disclosure of Invention
The invention aims to provide a heating control method of a main control cabinet, which aims to solve the technical problems that in the prior art, devices are damaged or a machine set cannot be started up due to the fact that the working environment temperature of the main control cabinet is low.
In order to achieve the purpose, the technical scheme of the heating control method of the main control cabinet provided by the invention is as follows: and judging whether a yaw starting control instruction sent by the master control exists, if so, executing the yaw starting control instruction, and if not, heating the master control cabinet by adopting a fan brake resistor according to the temperature and humidity conditions in the master control cabinet.
The beneficial effects are that: the main control cabinet is heated by using the original fan brake resistor in the wind generating set, the utilization rate of each component in the main control cabinet is improved, the stability of the working environment temperature of each component in the main control cabinet is maintained, the performance reduction or damage of the components in the main control cabinet caused by the over-low temperature of each component in the main control cabinet is avoided, and the working efficiency and the service life of the wind generating set are ensured.
And further, selecting the heating power of the main control cabinet according to the humidity in the main control cabinet.
The beneficial effects are that: heating power is selected according to actual environmental conditions in the main control cabinet, and the heating power is rapidly selected by measuring the humidity in the cabinet, so that the heating effect of the main control cabinet is ensured, and energy is saved.
And further, more than two of the fan braking resistors are selected to heat the main control cabinet.
The beneficial effects are that: the fan braking resistors more than two can enable the whole heating system to have higher heating power, and the heating requirement of the whole main control cabinet is met.
Further, whether the humidity in the main control cabinet is larger than or equal to 85% or not is judged, if yes, the heating power of each fan braking resistor is 500W, and otherwise, the heating power of each fan braking resistor is 1200W.
The beneficial effects are that: the heating power of the fan brake resistor is reasonably selected conveniently according to the actual environment condition in the main control cabinet, energy waste is avoided, and the heating effect under different conditions is ensured.
Furthermore, the heating power of the fan braking resistor is adjusted by controlling the duty ratio of the fan braking resistor.
The beneficial effects are that: the adjustment of the heating power can be realized without setting a complex circuit structure or replacing heaters with different powers or increasing the number of the heaters, and the adjustment mode of the heating power is convenient.
Further, if the temperature in the main control cabinet is higher than 35 ℃, cutting out the fan brake resistor, otherwise, judging whether the temperature in the main control cabinet is higher than 5 ℃ and the humidity is lower than 85%, if so, cutting out the fan brake resistor, otherwise, judging whether the temperature in the main control cabinet is lower than 0 ℃ or the humidity is higher than 85%, if so, putting in the fan brake resistor to start heating, otherwise, returning to judge whether the temperature in the main control cabinet is higher than 35 ℃.
The beneficial effects are that: the temperature sensor and the humidity sensor are used for detecting the temperature in the main control cabinet, the temperature and the humidity of the main control cabinet are monitored and fed back in real time, and automatic control over heating of the main control cabinet is achieved.
Furthermore, a cooling fan in the main control cabinet can be started and stopped synchronously with a fan brake resistor, and heat is sent into the whole main control cabinet.
The beneficial effects are that: the cooling fan and the fan brake resistor in the main control cabinet are controlled to synchronously start and stop when heating is carried out, so that the heat of the brake resistor can be better radiated to each part in the main control cabinet, the heating efficiency is improved, and the heating effect on the main control cabinet is ensured.
In order to achieve the purpose, the technical scheme of the master control cabinet system with the heating function provided by the invention is as follows: the main control cabinet comprises a main control module, and the main control module is in wired or wireless connection with the yaw frequency converter and is used for controlling the yaw frequency converter to operate; the yaw frequency converter is provided with a control part for driving the yaw motor and the fan brake resistor so as to heat the main control cabinet by the fan brake resistor, and is in wired or wireless connection with the temperature sensor and the humidity sensor.
The beneficial effects are that: the main control cabinet is heated by using the original fan brake resistor in the wind generating set, the utilization rate of each component in the main control cabinet is improved, the stability of the working environment temperature of each component in the main control cabinet is maintained, the performance reduction or damage of the components in the main control cabinet caused by the excessively low environmental temperature of each component in the main control cabinet is avoided, and the working efficiency and the service life of the wind generating set are ensured.
Furthermore, the humidity sensor is provided with a humidity set value, when the humidity in the main control cabinet is greater than the set value, a low level signal is output, and when the humidity in the main control cabinet is less than the set value, a high level signal is output; the heating power of the main control cabinet is adjustable.
The beneficial effects are that: the humidity sensor converts the humidity signal into an electric signal for transmission, the yaw frequency converter is convenient to identify the signal, and the main control module controls and selects proper heating power.
Furthermore, the yaw frequency converter is also provided with a control part for driving the cooling fan to run, and the cooling fan can be started and stopped synchronously with the fan brake resistor.
The beneficial effects are that: the cooling fan and the fan brake resistor in the main control cabinet are controlled to synchronously start and stop when heating is carried out, so that the heat of the brake resistor can be better radiated to each part in the main control cabinet, the heating efficiency is improved, and the heating effect on the main control cabinet is ensured.
Drawings
FIG. 1 is a view showing a configuration of a master control cabinet system having a heating function according to the present invention;
FIG. 2 is a general control flow chart of the heating control method of the main control cabinet according to the present invention;
FIG. 3 is a logic flow diagram of the heating start/stop control of the main control cabinet according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the language "comprising one of 8230; \8230;" etc. does not exclude a process, method or the like that comprises such an element.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the term "provided" may be used in a broad sense, for example, the object of "provided" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or a non-detachable connection. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
The present invention will be described in further detail with reference to examples.
The specific embodiment 1 of the master control cabinet system with the heating function provided by the invention:
the main control cabinet system is an important component of the main control system of the wind generating set, is used for processing data signals collected by various sensors in the cabin of the wind generating set and controlling the operation of various lubricating systems, heat dissipation systems, heating systems, lighting systems and the like in the cabin, and also has an automatic heating function so as to ensure that various components in the main control cabinet can be stably and normally started, stopped and operated under a low-temperature environment, ensure the working performance of the main control cabinet under the low-temperature environment and improve the environmental adaptability of the whole main control cabinet. The following description will be made of a master control cabinet to which the 3.xmw unit is applied.
The main control cabinet system with the heating function, as shown in fig. 1, includes a main control module (i.e., a main control PLC), where the main control module in this embodiment is a PLC module, and performs information interaction with the yaw frequency converter through CAN communication to control the yaw frequency converter to operate. And the yaw frequency converter is used for driving the fan brake resistor and the yaw motor to operate, so that the fan brake resistor can be used for heating the main control cabinet. The main control module issues a start/stop command, a yaw drive fault reset command and a motor rotating speed command to the yaw frequency converter through a control word, namely a bit input signal. When the yaw frequency converter detects that the control word bit1=1, responding to the yaw frequency converter to not execute heating control and executing a yaw control command, and controlling the yaw motor to start running according to a motor rotating speed command issued by the main control module; when the yaw frequency converter detects that the control word bit1=0, it is determined whether a brake loop is abnormal in operation, if not, a heating start/stop control flow is executed, and if so, the heating start/stop control flow is not executed, and troubleshooting are performed, so as to obtain a master control flow chart of the heating control method for the main control cabinet in the embodiment, as shown in fig. 2.
The main control cabinet system is also provided with a cooling fan, and the yaw frequency converter is provided with a second temperature sensor (not shown in the figure) for monitoring the temperature change inside the yaw frequency converter. When the temperature in the yaw frequency converter is higher than 60 ℃, the cooling fan is automatically started, air flowing in the cabinet is accelerated, and the yaw frequency converter is cooled.
The fan braking resistor is installed on the braking loop, when the yaw frequency converter executes a yaw control command, energy backflow can occur in the whole circuit, the voltage of the direct-current bus is increased, even the voltage of the direct-current bus is larger than 700V, circuit faults and equipment damage can be easily caused when the voltage of the direct-current bus is increased, and at the moment, the fan braking resistor works to discharge energy so as to guarantee normal operation of the equipment.
Adopt wired connection between driftage converter and temperature sensor and the humidity transducer, temperature sensor can gather the inside temperature data of main control cabinet in real time, and the temperature sensor model in this embodiment is PT100. Humidity transducer can carry out real-time collection to the inside humidity data of master control cabinet, and humidity transducer has set value 85%, and the humidity acquisition sensor model in this embodiment is MFR012.
When the humidity in the main control cabinet is greater than or equal to 85%, the DI4 digital value switch of the yaw frequency converter 24V detects that the humidity sensor outputs a low level signal of 0V, namely DI4=0, and when the humidity in the main control cabinet is less than 85%, the DI4 digital value switch of the yaw frequency converter 24V detects that the humidity sensor outputs a high level signal of 24V, namely DI4=1.
The main control cabinet system with the heating function in the embodiment can select heating power according to the humidity in the main control cabinet, the yaw driver judges the type of the main control cabinet by acquiring the high and low levels of the DI4 input signal, and if DI4=1, the main control cabinet is judged to be a low-temperature type; otherwise, DI4=0, and the application is determined to be the normal temperature type master control cabinet. The yaw frequency converter realizes the control of the heating power of the fan brake resistor by controlling the duty ratio of the fan brake resistor. When the main control cabinet body is a low-temperature main control cabinet, the heating power of each fan brake resistor is 1200W; when the main control cabinet is a normal temperature type main control cabinet, the heating power of each fan braking resistor is 500W. In this embodiment, two fan brake resistors are used for heating the main control cabinet, and both the two fan brake resistors are 40 Ω/2000W aluminum shell resistors.
Referring to fig. 3, if the temperature in the main control cabinet is greater than 35 ℃, switching out a fan brake resistor and a cooling fan, otherwise, judging whether the temperature in the main control cabinet is greater than 5 ℃ and DI4=1 (i.e., the humidity is less than 85%), switching out the fan brake resistor and the cooling fan if the temperature in the main control cabinet is greater than 5 ℃, or whether the temperature in the main control cabinet is less than 0 ℃ or DI4=0 (i.e., the humidity is greater than or equal to 85%), switching in the fan brake resistor and the cooling fan if the temperature in the main control cabinet is greater than 35 ℃, starting the main control cabinet for heating, and otherwise, returning to judge whether the temperature in the main control cabinet is greater than 35 ℃. When heating the main control cabinet, with the help of radiator fan make the air flow in the main control cabinet accelerate, make the heat can give off to the different corners and the position of main control cabinet more fast, promote heating efficiency.
The specific embodiment 2 of the master control cabinet system with the heating function provided by the invention:
the difference from the embodiment 1 is mainly that in the embodiment, the heating power of the main control cabinet is fixed, the selection of the heating power is not performed, and the humidity value measured by the humidity sensor is only used for being fed back together with the temperature value measured by the temperature sensor, so that the automatic control of the heating start/stop is realized.
The specific embodiment of the master control cabinet system with the heating function provided by the invention 3:
the difference from embodiment 1 is mainly that, in this embodiment, the cooling fan is not started or stopped synchronously with the brake resistor in the heating operation state, and the cooling fan is started to cool the yaw drive only in the yaw drive executing yaw operation state.
Embodiment 1 of the heating control method of the master control cabinet of the present invention:
in this embodiment, the heating control method of the main control cabinet is as follows:
and judging whether a control instruction for starting yaw exists or not, if so, executing the control instruction for starting yaw, and if not, heating the main control cabinet by adopting a fan brake resistor according to the temperature and humidity conditions in the main control cabinet.
The general control flow chart of the heating control method of the main control cabinet in this embodiment is shown in fig. 2. The main control module (namely the main control PLC) sends a start/stop command, a yaw drive fault reset command and a motor rotating speed command to the yaw frequency converter by a control word (namely bit input signal). When the yaw frequency converter detects that the control word bit1=1, responding to the yaw frequency converter not to execute heating control, executing a yaw control command, and controlling the yaw motor to start running according to a motor rotating speed command issued by the main control module; when the yaw frequency converter detects that the control word bit1=0, whether the work of the brake loop is abnormal or not is judged, if no abnormality exists, the heating start/stop control flow is executed, and if the abnormality exists, the heating start/stop control flow is not executed, and fault maintenance and troubleshooting are carried out.
In this embodiment, the heating power of the main control cabinet is selected according to the humidity in the main control cabinet. When the humidity in the main control cabinet is greater than or equal to 85% of the humidity sensor, the DI4 digital value switch-in of the yaw frequency converter 24V detects that the humidity sensor outputs a low level signal of 0V, i.e., DI4=0, and when the humidity in the cabin cabinet is less than 85%, the DI4 digital value switch-in of the yaw frequency converter 24V detects that the humidity sensor outputs a high level signal of 24V, i.e., DI4=1.
In the embodiment, the heating power is selected according to the humidity in the main control cabinet, the yaw driver judges the type of the main control cabinet by acquiring the high and low levels of the DI4 input signal, and if DI4=1, the main control cabinet is judged to be a low-temperature type; otherwise, DI4=0, the application is determined to be the normal temperature master cabinet. The yaw frequency converter realizes the control of the heating power of the braking resistor of the fan by controlling the duty ratio of the braking resistor of the fan. When the main control cabinet body is a low-temperature main control cabinet, the heating power of each fan brake resistor is 1200W; when the main control cabinet is a normal temperature type main control cabinet, the heating power of each fan brake resistor is 500W. In this embodiment, two fan brake resistors are used for heating the main control cabinet, and both the two fan brake resistors are 40 Ω/2000W aluminum shell resistors.
As shown in fig. 3, if the temperature in the main control cabinet is greater than 35 ℃, a fan brake resistor and a cooling fan are switched out, otherwise, whether the temperature in the main control cabinet is greater than 5 ℃ and DI4=1 (i.e., the humidity is less than 85%) is judged, if yes, the fan brake resistor and the cooling fan are switched out, otherwise, whether the temperature in the main control cabinet is less than 0 ℃ or DI4=0 (i.e., the humidity is greater than or equal to 85%) is judged, if yes, the fan brake resistor and the cooling fan are switched in, the main control cabinet is started to heat, and otherwise, whether the temperature in the main control cabinet is greater than 35 ℃ is judged in a return mode. When heating the main control cabinet, with the help of radiator fan make the air flow in the main control cabinet accelerate, make the heat can give off to the different corners and the position of main control cabinet more fast, promote heating efficiency.
The specific embodiment 2 of the heating control method of the master control cabinet provided by the invention:
the difference from the embodiment 1 is mainly that in the embodiment, the heating power is not selected, and the heating of the main control cabinet is automatically controlled directly according to the temperature and humidity values in the main control cabinet.
The specific embodiment 3 of the heating control method of the master control cabinet provided by the invention:
the difference from embodiment 1 is mainly that in this embodiment, three fan brake resistors are used to heat the main control cabinet, in other embodiments, the number of fan brake resistors used for heating the main control cabinet may be four or more, and the number of fan brake resistors used for heating is set and selected according to the number of fan brake resistors in the actual main control cabinet and the power required for heating.
The specific embodiment 4 of the heating control method of the master control cabinet provided by the invention:
the main difference from embodiment 1 is that in this embodiment, the heating power is adjusted by setting the circuit structures of two fan braking resistors for heating, each fan braking resistor corresponds to a branch switch and a main switch, and each switch can be controlled independently.
The specific embodiment 5 of the heating control method of the master control cabinet provided by the invention:
the difference from the embodiment 1 is mainly that, in the embodiment, the set value of the humidity sensor is 80%, whether the humidity in the main control cabinet is greater than or equal to 80% is judged, if yes, the heating power of each fan braking resistor is 700W, and otherwise, the heating power of each fan braking resistor is 1300W. In other embodiments, the heating power and the set humidity value are selected according to the rated power of the number of the fan braking resistors in the actual main control cabinet and the required working environment conditions of all components.
The specific embodiment 6 of the heating control method of the master control cabinet provided by the invention:
the difference from embodiment 1 is mainly that, in this embodiment, if the temperature in the main control cabinet is greater than 30 ℃, the fan brake resistor and the cooling fan are switched out, otherwise, it is determined whether the temperature in the main control cabinet is greater than 5 ℃ and the humidity is less than 85%, if so, the fan brake resistor and the cooling fan are switched out, otherwise, it is determined whether the temperature in the main control cabinet is less than 0 ℃ or the humidity is greater than or equal to 85%, if so, the fan brake resistor and the cooling fan are switched in, the heating is started, otherwise, the main control cabinet is returned to determine whether the temperature in the main control cabinet is greater than 30 ℃. In other embodiments, the set temperature value of the temperature sensor and the set humidity value of the humidity sensor of the main control cabinet can be set and adjusted according to the actual working conditions of each component in the main control cabinet.
The specific embodiment 7 of the heating control method of the master control cabinet provided by the invention:
the difference from embodiment 1 is mainly that, in this embodiment, the cooling fan is not started or stopped synchronously with the brake resistor in the heating operation state, and the cooling fan is started to cool the yaw drive only in the yaw operation state.
Finally, it should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and equivalents can be made to the technical solutions described in the foregoing embodiments without inventive effort, or some technical features thereof can be replaced with equivalents. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A heating control method of a main control cabinet is characterized by comprising the following steps: and judging whether a yaw starting control instruction sent by the master control exists, if so, executing the yaw starting control instruction, and if not, heating the master control cabinet by adopting a fan brake resistor according to the temperature and humidity conditions in the master control cabinet.
2. The method as claimed in claim 1, wherein the heating power of the main control cabinet is selected according to the humidity in the main control cabinet.
3. The heating control method of the main control cabinet according to claim 2, wherein more than two of the fan brake resistors are selected to heat the main control cabinet.
4. The heating control method of the main control cabinet according to claim 3, wherein whether the humidity in the main control cabinet is greater than or equal to 85% is judged, if yes, the heating power of each fan brake resistor is 500W, and otherwise, the heating power of each fan brake resistor is 1200W.
5. The heating control method of the main control cabinet as claimed in claim 4, wherein the heating power of the fan brake resistor is adjusted by controlling the duty ratio of the fan brake resistor.
6. The main control cabinet heating control method according to any one of claims 1 to 5, wherein if the temperature in the main control cabinet is greater than 35 ℃, a fan brake resistor is switched out, otherwise, whether the temperature in the main control cabinet is greater than 5 ℃ and the humidity is less than 85% is judged, if yes, the fan brake resistor is switched out, otherwise, whether the temperature in the main control cabinet is less than 0 ℃ or the humidity is greater than or equal to 85% is judged, if yes, the fan brake resistor is switched in for heating, and if not, the temperature in the main control cabinet is returned for judging whether the temperature in the main control cabinet is greater than 35 ℃.
7. The heating control method of the master control cabinet as claimed in claim 6, wherein the heat dissipation fan in the master control cabinet can be started and stopped synchronously with the fan brake resistor to send heat to the whole master control cabinet.
8. A main control cabinet system with a heating function is characterized by comprising a main control module, wherein the main control module is in wired or wireless connection with a yaw frequency converter and is used for controlling the yaw frequency converter to operate; the yaw frequency converter is provided with a control part for driving the yaw motor and the fan brake resistor so as to heat the main control cabinet by the fan brake resistor, and is in wired or wireless connection with the temperature sensor and the humidity sensor.
9. The cabinet system as claimed in claim 8, wherein the humidity sensor has a humidity set value, and outputs a low level signal when the humidity in the cabinet is greater than the set value, and outputs a high level signal when the humidity in the cabinet is less than the set value; the heating power of the main control cabinet is adjustable.
10. The master control cabinet system with the heating function as claimed in claim 8 or 9, wherein the yaw frequency converter further comprises a control part for driving a cooling fan to run, and the cooling fan can be started and stopped synchronously with the fan brake resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211007222.7A CN115306639A (en) | 2022-08-22 | 2022-08-22 | Main control cabinet system with heating function and heating control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211007222.7A CN115306639A (en) | 2022-08-22 | 2022-08-22 | Main control cabinet system with heating function and heating control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115306639A true CN115306639A (en) | 2022-11-08 |
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| CN202211007222.7A Pending CN115306639A (en) | 2022-08-22 | 2022-08-22 | Main control cabinet system with heating function and heating control method |
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| CN (1) | CN115306639A (en) |
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- 2022-08-22 CN CN202211007222.7A patent/CN115306639A/en active Pending
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