CN108266337B - Wind generating set and cooling method thereof - Google Patents
Wind generating set and cooling method thereof Download PDFInfo
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- CN108266337B CN108266337B CN201611260064.0A CN201611260064A CN108266337B CN 108266337 B CN108266337 B CN 108266337B CN 201611260064 A CN201611260064 A CN 201611260064A CN 108266337 B CN108266337 B CN 108266337B
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- 238000001816 cooling Methods 0.000 title claims abstract description 111
- 239000003570 air Substances 0.000 claims abstract description 192
- 239000012080 ambient air Substances 0.000 claims abstract description 164
- 238000001514 detection method Methods 0.000 claims description 50
- 239000013618 particulate matter Substances 0.000 claims description 23
- 230000007613 environmental effect Effects 0.000 claims description 12
- 238000005485 electric heating Methods 0.000 claims description 8
- 238000010248 power generation Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 abstract description 4
- 230000001276 controlling effect Effects 0.000 description 35
- 239000012530 fluid Substances 0.000 description 10
- 239000000428 dust Substances 0.000 description 8
- 150000003839 salts Chemical class 0.000 description 8
- 238000004891 communication Methods 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000004576 sand Substances 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 4
- 239000000356 contaminant Substances 0.000 description 3
- 238000011109 contamination Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000003915 air pollution Methods 0.000 description 2
- 230000000153 supplemental effect Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
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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
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- Wind Motors (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The embodiment of the invention provides a wind generating set and a cooling method thereof. The wind power generator set comprises a generator and a cooling system for cooling the generator, wherein the cooling system comprises a pipeline for circulating air and a heat exchanger for cooling the air, the pipeline is provided with an air inlet and an air outlet for introducing ambient air into the pipeline, the air outlet is used for discharging the air in the pipeline, and the air inlet and/or the air outlet can be closed. Therefore, the wind generating set has better protection performance for the external environment, and can realize high-efficiency heat exchange under the condition of higher external environment temperature.
Description
Technical Field
The invention relates to the field of wind power generation, in particular to a wind generating set and a cooling method thereof. The wind generating set comprises a generator and a cooling system for cooling the generator, wherein the cooling system comprises a pipeline for circulating air and a heat exchanger for cooling the air
Background
Existing wind power plants have closed air circulation lines for cooling the generator by means of an air/air heat exchanger. Thus, the air in the circulating pipeline can be kept dry and clean, and further the service life of the generator can be prolonged, and good insulation and corrosion protection are realized. However, due to performance limitations of the heat exchanger, the operation performance of the wind power generator set may be limited when the wind power generator set is operated at a high load.
Another wind turbine generator system uses ambient air to directly cool the generator, which is filtered and then delivered to the generator. However, moisture, humid air, impurities, salts or chemical contaminations in the ambient air cannot be completely filtered during the filtration process, which in turn causes corrosion and contaminations of the generator, whereby the wind power generator set requires frequent maintenance, in particular replacement and cleaning of the filter. Due to the above drawbacks, the wind power generator set with direct cooling of ambient air cannot be disposed close to the coast or in areas with serious air pollution, such as heavy industrial areas, etc.
Disclosure of Invention
An aspect of embodiments of the present invention is to provide a wind turbine generator system, which can overcome the above-described drawbacks of the wind turbine generator system.
The wind generating set of the invention for solving the above problems is characterized in that in order to supplement and cool the generator, an ambient air inlet is arranged in the pipeline for introducing ambient air into the pipeline; the pipeline is also provided with a pipeline air outlet for discharging air in the pipeline, wherein the ambient air inlet and/or the pipeline air outlet can be closed.
In a preferred embodiment, the wind power plant of the invention is arranged to:
A. Cooling by using a heat exchanger alone; and/or
B. cooling simultaneously with the incoming ambient air using a heat exchanger; and/or
C. The incoming ambient air was used alone for cooling.
In the cooling mode of the heat exchanger alone, the ambient air inlet and/or the air outlet of the pipeline are/is closed, so that the connection between the air circulation pipeline and the external environment is disconnected, and the generator is prevented from being polluted by the external environment. In a preferred embodiment of the invention, both the ambient air inlet and the line outlet are closed. However, even in the case where only one of the ambient air inlet or the duct air outlet is closed, no or only a small amount of ambient air can enter the duct without forming an air flow between the ambient air inlet and the duct air outlet, the air flow in the closed duct is sufficient to separate the duct from the outside environment.
Preferably, the wind power plant is in a state of closing the ambient air inlet and/or the air outlet of the pipeline for at least 60% of the operating time, preferably at least 70% of the operating time.
If cooling by the heat exchanger alone is insufficient to maintain the temperature of the generator at the proper temperature, the ambient air inlet and the line air outlet are opened and the wind power plant is cooled by both the heat exchanger and the incoming ambient air. The introduction of ambient air causes indirect heat exchange of the generator with the external environment, thereby achieving supplemental cooling. However, the amount of ambient air entering the pipeline and the amount of contaminants that come with the ambient air are limited.
The mode of simultaneous cooling by the heat exchanger and the incoming ambient air is suitable for use when: for example, where ambient air is very hot, there is a strong wind and the generator is near the limit of the highest operating temperature, and the ambient air is relatively clean, for example, where dust, humidity and pollution are relatively low; or no rainfall, sand storm or wind is not blowing from the sea.
Ambient air cooling alone is suitable for use under the following conditions: for example, ambient air is very hot and has a strong wind and is relatively clean. In this mode of operation, air is introduced directly into the generator and is completely expelled through the conduit after the air has passed through the generator. In this way, the pipeline is filled with ambient air.
In order to introduce air directly from the ambient air inlet to the generator and to discharge air of the generator directly from the conduit outlet, the portion of the conduit between the ambient air inlet and the heat exchanger and/or the portion between the conduit outlet and the heat exchanger may be closed to prevent ambient air from flowing into the ambient air inlet or the conduit outlet to the heat exchanger.
Optionally, the wind power plant comprises means for closing and/or opening the ambient air inlet and/or the air outlet of the pipeline, preferably using a control valve, preferably a slide valve or a closure plate (flap), so that the air flow of the ambient air inlet and/or the air outlet of the pipeline can be adjusted to control the amount of ambient air entering the pipeline. Preferably, an air inlet control valve is arranged in the ambient air inlet, and an air outlet control valve is arranged in the pipeline air outlet.
In a preferred embodiment of the invention, the wind power plant comprises a control device for controlling the opening or closing of the ambient air inlet and/or the air outlet of the pipeline, in particular for adjusting the number of openings of the ambient air inlet and/or the air outlet of the pipeline.
The conduit preferably comprises a first generator conduit for conveying air from the heat exchanger to the generator and a second generator conduit for conveying air from the generator to the heat exchanger. However, in certain arrangements for delivering air from the heat exchanger to the generator, the conduit may also be configured as part of a nacelle that includes the wind turbine, e.g., air is delivered from the heat exchanger to the generator via a portion of the nacelle rather than via a closed conduit. Preferably, the nacelle dissipates heat by its own space so that it can act as a supplementary heat exchanger.
In the part of the conduit between the ambient air inlet and the heat exchanger and/or between the conduit outlet and the heat exchanger, a conduit control valve, such as a slide valve or a closure plate (flap), is preferably provided for closing the conduit and thereby preventing ambient air from flowing from the ambient air inlet into the heat exchanger or from the heat exchanger via the conduit outlet in an operating mode in which the ambient air is solely used for cooling the wind power generator, as before.
Optionally, the ambient air inlet and the conduit outlet are arranged along the conduit, preferably the ambient air inlet is arranged in a flow path from the heat exchanger to the generator and/or the conduit outlet is arranged in a flow path from the generator to the heat exchanger.
In a preferred form, the ambient air inlet and/or the duct outlet comprises a duct section which communicates with the duct forming the duct. In another embodiment, the ambient air inlet may also be in direct communication with the nacelle.
Optionally, a filter is provided in the ambient air inlet for filtering the ambient air prior to entering the conduit, in particular to avoid the entry of moisture, particulates or other contaminants into the conduit.
In a preferred manner, the wind power plant further comprises a first fluid drive device, preferably a fan (fan), arranged in the pipeline for introducing ambient air into the pipeline or for evacuating air from the pipeline. Preferably, the fluid drive device is arranged at or close to the ambient air inlet and/or the conduit air outlet.
In addition, the wind power generator set further comprises an additional fluid driving device, preferably a fan, which may be arranged close to the heat exchanger for driving the air in the pipeline through the heat exchanger.
Preferably, the first fluid drive device and/or the additional fluid drive device is controlled by a control means. The control means is for adjusting the magnitude of the air flow generated by the first fluid driving device and/or the additional fluid driving device.
In a preferred manner, the wind power plant comprises means for detecting the operating temperature of the generator, in particular the coil temperature of the generator.
The wind power plant preferably comprises at least one detection device for detecting an external environmental condition of the wind power plant. The one or more detection devices may include at least one of the following: an ambient temperature detection device, a rainfall detection device (detecting ambient rainfall), an ambient air component detection device (preferably detecting humidity and/or salt content of ambient air), a particulate matter content detection device (preferably detecting dust particle content in ambient air), and/or a wind detection device (preferably detecting wind direction and/or wind speed).
Preferably, the one or more detection devices send the detected information to the control means.
In a preferred form, a dehumidifier is provided in the conduit to remove moisture from the conduit. Wherein the dehumidifier is preferably only used in conditions where the ambient air inlet and/or the air outlet of the pipeline is closed and the humidity of the air in the pipeline is very high or the temperature of the air in the pipeline is lower than the temperature of the outside, in order to avoid air from entering the pipeline or the generator from the outside; for example, air may enter through seals that seal the interior of the pipeline and/or the generator from the exterior.
Further, the electric heating device is used for heating air in the pipeline so as to enable the temperature of the pipeline to be matched with the external environment temperature and avoid cold shrinkage of the pipeline and the generator. The electric heating device is preferably controlled by a control means.
The control device is preferably used for automatically opening or closing the ambient air inlet and/or the pipeline air outlet; optionally, the control device is further used for opening or closing a pipeline control valve arranged between the pipeline air outlet and the heat exchanger; optionally, the control means also automatically controls the fluid drive device and the heat exchanger based on the operating temperature of the generator.
In a preferred manner, the control means is adapted to automatically open or close the ambient air inlet and/or the line outlet and, preferably, to automatically control the fluid drive device and the heat exchanger based on the sensed information of the at least one sensing device. Further, the control means may control the intake control valve and/or the exhaust control valve, the line control valve, the fluid driving device, the heat exchanger, the dehumidifier, and/or the electric heating device based on the weather forecast information.
In a preferred form, the heat exchanger comprises a first chamber and a second chamber, the chambers being hermetically isolated from each other, air from the aforementioned conduit for circulation moving through the first chamber, ambient air moving through the second chamber and carrying away heat from the wind power plant. The wind power plant comprises a heat exchanger conduit for introducing ambient air into the second chamber, the heat exchanger conduit being completely isolated from the aforementioned conduit.
In a preferred form, the heat exchanger is an air/air heat exchanger. However, other means, such as an air/water heat exchanger, etc., may also be employed.
In a preferred form, the generator is a gearless permanent magnet direct drive generator. However, the invention is also applicable to wind power plants employing other types of electric machines.
Embodiments of the present invention have the following advantages:
In the wind generating set and the cooling method thereof provided by the embodiment of the invention, the generator of the wind generating set can be cooled by the heat exchanger and/or the ambient air. The cooling mode may be selected based on conditions such as operating temperature of the generator, ambient temperature, ambient air composition, particulate matter content in ambient air, wind direction, and/or rainfall information. An advantage of embodiments of the present invention is that it combines the advantages of both closed loop and open loop cooling systems. When faced with complex and extreme external environments, the wind power generator set may operate in a mode cooled solely by the heat exchanger (closed loop); the temperature of the generator can be controlled in a mode of reducing the maximum power output under the condition of high temperature of the external environment, so that the generator can be effectively protected, and damage to the generator caused by external sand dust, water, salt and fog is reduced.
Drawings
FIG. 1 is a schematic view of a part of a wind turbine generator system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a modification of a wind turbine generator system according to an embodiment of the present invention;
FIG. 3 is a schematic view of another variation of a wind turbine generator system according to an embodiment of the present invention;
FIG. 4 is a schematic view of a further variant of a wind turbine generator system according to an embodiment of the present invention;
Reference numerals illustrate:
1. A hub; 2. a blade; 3. a generator; 4. a base; 5. a nacelle; 6. a nacelle housing; 7. a tower; 8. a heat exchanger; 9.a control device; 10. a second generator conduit; 11. a generator air outlet; 12. a third conduit fan; 13. a first chamber of the heat exchanger; 14. a first generator conduit; 15. an air inlet of the heat exchanger; 16. a second chamber of the heat exchanger; 17. a heat exchanger outlet fan; 18. an air outlet of the heat exchanger; 19. an air inlet of the generator; 20. an ambient air inlet; 21. an air intake fan; 22. an intake control valve; 23. a filter; 24. a pipeline air outlet; 25. an air outlet control valve; 26. a pipeline control valve; 27. a first conduit fan; 28. an air outlet fan; 29. a second conduit fan; 29a, a first generator inlet fan; 29b, a second generator inlet fan; 30. particulate matter content detection equipment; 31. a rainfall amount detection device; 32. a wind detection device; 40. an electric heating device; 41. a dehumidifier.
Detailed Description
Various embodiments of a wind power generation set and a cooling method thereof according to embodiments of the present invention are described in detail below with reference to fig. 1 to 4. Like reference numerals are used to denote like parts throughout the figures. The ambient air referred to hereinafter refers to air in the external environment surrounding the wind power plant.
Example 1
In fig. 1, a part of the structure of a wind power plant is shown, comprising a hub 1 rotatable about a horizontal axis, blades 2 connected to the hub 1, a generator 3, a foundation 4 connected to a tower 7 and the hub 1, a nacelle 5 and a nacelle cover 6. The generator 3 is preferably a permanent magnet direct drive generator without a gear (gearless).
An air cooling line forming a closed-loop structure is provided in the nacelle 5 for conveying a cooling medium for cooling the generator 3. The pipeline comprises a first generator duct 14 for conveying air to the generator 3 and a second generator duct 10 for discharging air from the generator 3. The first generator conduit 14 and the second generator conduit 10 are both in communication with the first chamber 13 of the heat exchanger 8 to dissipate heat from the generator 3.
The first generator duct 14 is provided with an ambient air inlet 20 for introducing ambient air. The ambient air inlet 20 has a tubular structure in communication with the first generator duct 14; optionally, a filter 23 is provided in the ambient air inlet 20 for filtering the ambient air before it enters the pipeline; optionally, an intake fan 21 is also provided in the ambient air inlet 20 for controlling the air flow in the intake line, and an intake control valve 22 is provided for opening and closing the ambient air inlet 20. The first generator conduit 14 communicates with the generator inlet.
The second generator pipeline 10 is provided with a pipeline air outlet 24 for discharging hot air from the generator 3; the pipeline air outlet 24 is provided with a tubular structure communicated with the second generator pipeline 10; optionally, an air outlet fan 28 and an air outlet control valve 25 are further disposed in the air outlet 24, where the air outlet fan 28 is used to control the amount of air discharged from the air outlet, and the air outlet control valve 25 is used to open or close the air outlet 24. The second generator duct 10 communicates with a generator air outlet 11.
The second generator conduit 10 is provided with a conduit control valve 26 for opening or closing the portion of the second generator conduit 10 between the conduit outlet 24 and the heat exchanger 8. Further, an electric heating device 40 is also provided in the second generator duct 10, the electric heating device 40 adjusting the air temperature according to the environmental conditions; and, a dehumidifier 41 is further provided in the second generator pipe 10, the dehumidifier 41 being for removing moisture in the pipe.
In the first generator duct 14, downstream of the ambient air inlet 20 in the direction of flow of the air flow, a second ducted fan 29 is provided, the second ducted fan 29 being arranged to draw air from the heat exchanger 8 and/or, as the case may be, to drive ambient air from the ambient air inlet 20 into the generator.
Further, a first ducted fan 27 and a third ducted fan 12 are provided in the second generator duct 10, the first ducted fan 27 driving air from the generator 3 to the heat exchanger 8 and/or, as the case may be, to the ducted air outlet 24. The third ducted fan 12 drives air into the first chamber 13 of the heat exchanger 8. The first chamber 13 of the heat exchanger 8 communicates with the environment outside the nacelle 5 through a heat exchanger inlet 15.
The second chamber 16 of the heat exchanger 8 is connected to a conduit in communication with the external environment, which conduit comprises a heat exchanger inlet 15 and a heat exchanger outlet 18, wherein the heat exchanger inlet 15 is arranged to convey ambient air to the second chamber 16 and the heat exchanger outlet 18 is arranged to discharge air from the second chamber 16. A heat exchanger outlet fan 17 is provided in the heat exchanger inlet 15 and/or the heat exchanger outlet 18.
Further, the wind power plant comprises a detection device for detecting the operating temperature of the generator 3, in particular the coil temperature of the generator 3; in addition, the wind power plant may further comprise an ambient temperature detection device, a rainfall detection device 31 (detecting ambient rainfall), an ambient air composition detection device (preferably detecting humidity and/or salt content of ambient air), a particulate matter content detection device 30 (preferably detecting dust particle content in ambient air, for example when a dust storm occurs) and/or a wind detection device 32 (preferably detecting wind direction and/or wind speed).
The wind power generator set comprises control means 9 for opening and closing the inlet control valve 22, the outlet control valve 25 and the line control valve 26, and for controlling the inlet fan 21, the first line fan 27, the outlet fan 28, the third line fan 12 and the heat exchanger outlet fan 17, and for controlling the heat exchanger 8, the electric heating device 40 and the dehumidifier 41.
In the first mode of operation, the generator 3 is cooled solely by the air in the pipeline. The pipeline is isolated from the external environment, so that moisture, particulate matters or other types of pollution in the pipeline can be avoided.
In the second operation mode, if the cooling effect of the heat exchanger 8 does not meet the cooling requirement of the generator 3, the inlet control valve 22, the outlet control valve 25 and the duct control valve 26 are at least partially opened, and the inlet fan 21, the outlet fan 28, the second duct fan 29, the first duct fan 27 and the third duct fan 12 and the heat exchanger 8 are turned on. Further, the opening degree of the inlet control valve 22 and the outlet control valve 25, and/or the operation modes of the inlet fan 21 and the outlet fan 28 may be adjusted by the control device 9 based on the required cooling effect. Ambient air is introduced into the pipeline so that indirect heat exchange between the generator 3 and the external environment is generated, and then supplementary cooling is realized. However, the amount of ambient air entering the pipeline and the amount of contaminants entering with the ambient air are limited.
The third mode of operation is activated in case the second mode of operation is insufficient to provide sufficient cooling, at which time the inlet control valve 22 and the outlet control valve 25 are opened, the line control valve 26 is closed, the inlet fan 21, the outlet fan 28 and the second line fan 29, the first line fan 27 are opened, and the third line fan 12 and the heat exchanger outlet fan 17 and the heat exchanger 8 are closed. The opening degree of the inlet control valve 22 and the outlet control valve 25, and/or the operation modes of the inlet fan 21 and the outlet fan 28 can be adjusted by the control device 9 based on the required cooling effect. However, in the third operation mode, the inlet control valve 22 and the outlet control valve 25 need to be fully opened to the greatest extent possible. The ambient air is directly conveyed to the generator 3, and then the introduced ambient air is completely discharged from the pipeline after passing through the generator 3; the line control valve 26 is closed so that the flow of air to the heat exchanger 8 is blocked.
The third mode of operation is suitable for conditions where ambient air is very hot and the external wind forces are strong and the air is relatively clean so that moisture, particulates and pollution do not enter the pipeline through the ambient air.
The wind power plant in fig. 2 differs from the wind power plant in fig. 1 in that within the nacelle 5 the first generator duct 14 is broken so that the cooling air part flows freely in the interior space of the nacelle 5. In order to convey the air inside the nacelle 5 to the generator 3, a second generator inlet fan is provided in the first generator duct 14, and in the air flow direction, a second generator inlet fan 29b is located downstream of the nacelle 5. Preferably, a first generator inlet fan 29a is also provided in the first generator duct 14.
The advantage of having the air flow through the interior space of the nacelle 5 is that: in this case the cabin 5 itself also serves a function like the heat exchanger 8 by exchanging heat with the surroundings.
The wind power plant in fig. 3 differs from the wind power plant in fig. 2 in that in the wind power plant in fig. 3 the first generator duct 14 is broken and the first chamber 13 of the heat exchanger 8 and the ambient air inlet 20, respectively, are in communication with the nacelle 5, so that air can flow freely inside the nacelle 5.
The wind power plant in fig. 4 differs from the wind power plant in fig. 2 in that in the wind power plant in fig. 4, the first generator duct 14 is not provided, and the first chamber 13 of the heat exchanger 8, the ambient air inlet 20 and the generator air inlet 19 are in communication with the nacelle 5, respectively, so that air can also flow freely inside the nacelle 5.
Example two
An embodiment II provides a cooling method of a wind generating set, which is applied to the wind generating set in the embodiment I. The generator 3 of the wind power generator set is cooled by the air circulated in the pipeline, and the circulated air is cooled by the heat exchanger 8; to provide supplemental cooling, the conduit introduces ambient air through the ambient air inlet 20 and air within the conduit is exhausted through the conduit outlet 24, wherein the ambient air inlet 20 and/or the conduit outlet 24 are opened or closed to control the flow of ambient air.
In this embodiment, the generator 3 of the wind generating set can be cooled by the heat exchanger 8 and/or ambient air, so that a high cooling efficiency can be maintained in various external environments, and the generator 3 can be better protected from being polluted and corroded by the external environments.
Further, the cooling mode of the wind generating set includes:
a. Cooling using only heat exchanger 8; and/or the number of the groups of groups,
B. cooling with both the heat exchanger 8 and the incoming ambient air; and/or the number of the groups of groups,
C. Only the incoming ambient air is used for cooling.
Optionally, the ambient air inlet 20 and/or the line outlet 24 are opened or closed under the control of the control device 9.
Optionally, the conduit comprises at least part of the space of the nacelle 5 of the wind power plant, or the conduit passes through the nacelle 5.
Optionally, the wind power generator set detects an ambient condition and controls the opening and closing of the ambient air inlet 20 and/or the duct outlet 24 in accordance with the ambient condition.
Optionally, the environmental condition detected by the wind generating set is implemented by a detection device, and the detection device includes: ambient temperature detection device, rainfall detection device 31 (detecting ambient rainfall), ambient air component detection device (preferably detecting humidity and/or salt content of ambient air), particulate matter content detection device 30 (preferably detecting dust particle content in ambient air), and/or wind detection device 32 (preferably detecting wind direction and/or wind speed)
Optionally, the automatic opening and closing of the ambient air inlet 20 and/or the line outlet 24 is controlled based on the operating temperature of the generator 3, preferably the coil temperature of the generator 3.
Optionally, the ambient air inlet 20 and/or the duct outlet 24 are automatically opened or closed based on the detection information of the aforementioned at least one detection device.
Optionally, as shown in fig. 1, at least one ambient fan is provided at the ambient air inlet 20 and/or the duct outlet 24. In this embodiment, the ambient fan includes an inlet fan 21 disposed at the ambient air inlet 20, and an outlet fan 28 disposed at the air outlet 24. Alternatively, in the embodiment shown in fig. 2 to 4, the ambient fan may also include only the air intake fan 21 disposed at the ambient air inlet 20, or the air outlet fan 28 disposed at the air outlet 24 of the duct. Optionally, the heat exchanger 8 fans include a heat exchanger outlet fan 17 and a third conduit fan 12 disposed on the heat exchanger 8.
Optionally, the cooling method of the present embodiment further includes a control step for controlling the intake air flow rate of the ambient air inlet 20 and/or the exhaust air flow rate of the pipeline air outlet 24; wherein the control step comprises: opening or closing the ambient air inlet 20, the conduit outlet 24 and the conduit, and controlling the ambient fan and/or the conduit fan for controlling the cooling of the generator 3.
Preferably, the first ducted fan 27 and the second ducted fan 29, if present, are arranged to be turned on or off synchronously; and/or the third ducted fan 12 and the heat exchanger outlet fan 17 are arranged to be turned on or off synchronously.
Optionally, cooling of the wind power plant is achieved by controlling opening or closing of the inlet control valve 22, outlet control valve and conduit control valve 26, and opening or closing of the inlet fan 21, outlet fan 28 and/or conduit fan. The cooling mode can be flexibly selected by the device. Wherein the control of the ambient air inlet 20, the pipeline air outlet 24 and the pipeline is realized by controlling the air inlet control valve 22, the air outlet control valve 25 and the pipeline control valve 26. Optionally, a line control valve 26 is provided between the line outlet 24 and the heat exchanger 8.
Further, the cooling method of the present embodiment further includes an acquisition step that is performed before the aforementioned control step, the acquisition step including: acquiring the working temperature of the generator 3; wherein the control step comprises: controlling the operation of at least one of the following devices based on the operating temperature of the generator 3: an inlet control valve 22, an outlet control valve 25, a line control valve 26, an ambient fan and a line fan.
In particular, the cooling of the wind power plant is based on the operating temperature of the generator 3, such that the operating temperature of the generator 3 can be controlled within a normal temperature range to ensure a proper operation of the wind power plant.
Optionally, the controlling step includes: when the operating temperature of the generator 3 is within the second temperature range, the inlet control valve 22 and/or the outlet control valve 25 are closed, and the ambient fan and the line fan are shut off. Preferably, the second temperature range may be [5 ℃,80 ℃), but is not limited to this particular range.
This control step is suitable in case the operating temperature of the generator 3 is in a lower range, where no or little cooling of the wind power plant is required to meet the demand.
Optionally, the controlling step further includes: when the operating temperature of the generator 3 is within the third temperature range, the air inlet control valve 22 and the air outlet control valve 25 are closed, the ambient fan is closed, and the pipeline control valve 26 and the pipeline fan are opened; wherein the minimum value of the third temperature range is greater than the maximum value of the second temperature range. Preferably, the third temperature range may be [80 ℃,110 ℃), but is not limited to this particular range.
This control step is suitable for the case where the temperature of the generator 3 is higher than the aforementioned second temperature range, and the generator 3 has a certain heat dissipation requirement, and the generator 3 is cooled by the heat exchanger 8 alone, so that the generator 3 can be isolated from the pollution and corrosion of the external environment, and the generator 3 is effectively protected.
Optionally, the controlling step further includes: when the operating temperature of the generator 3 is within the fourth temperature range, the air inlet control valve 22, the air outlet control valve 25 and the pipeline control valve 26 are opened, and the environmental fan and the pipeline fan are started; wherein the minimum value of the fourth temperature range is greater than the maximum value of the third temperature range. Preferably, the fourth temperature range may be [110 ℃,115 ℃), but is not limited to this particular range.
This control step is suitable in case the cooling effect of the heat exchanger 8 is insufficient to control the operating temperature of the generator 3 in the normal temperature range, and thus also ambient air is introduced directly into the generator 3, so that the generator 3 is cooled by the heat exchanger 8 together with the ambient air.
Optionally, the controlling step further includes: when the operating temperature of the generator 3 is within the fifth temperature range, the air inlet control valve 22, the air outlet control valve 25 and the ambient fan are opened, and the pipeline control valve 26 is closed; wherein the minimum value of the fifth temperature range is greater than the maximum value of the fourth temperature range. Preferably, the fifth temperature range may be [115 ℃,120 ℃), but is not limited to this particular range.
This control step is suitable in case the operating temperature of the generator 3 is high, and efficient cooling is required. At this time, the generator 3 is completely cooled by the ambient air, and the cooling efficiency is the highest.
Alternatively, the cooling method of the present embodiment may also be switched from cooling the generator 3 alone by the heat exchanger 8 to cooling the generator 3 by ambient air directly without going through the step of cooling the generator 3 together by the heat exchanger 8 and ambient air.
Specifically, the control step further includes: when the working range of the generator 3 is within the eighth temperature range, the air inlet control valve 22, the air outlet control valve 25 and the environmental fan are opened, and the pipeline control valve 26 is closed; wherein the minimum value of the eighth temperature range is greater than the maximum value of the third temperature range. Preferably, the eighth temperature range may be [110 ℃,120 ℃), but is not limited to this particular range.
In this operation step, the step of cooling the generator 3 by the heat exchanger 8 together with the ambient air is omitted, and when the operating temperature of the generator 3 exceeds the maximum value of the third temperature range and reaches the eighth temperature range, the generator 3 is directly cooled by the ambient air alone, thereby ensuring sufficient cooling efficiency.
Optionally, the controlling step includes: controlling the operation of at least one of the following devices based on the operating temperature of the generator 3: an inlet control valve 22, an outlet control valve 25, a line control valve 26, an ambient fan and a line fan.
Optionally, the aforementioned controlling the operation of at least one of the following devices based on the operating temperature of the generator 3 comprises: when the operating temperature of the generator 3 is within the sixth temperature range, the inlet control valve 22, the outlet control valve 25 and the ambient fan are opened; the line control valve 26 and the line fan are closed. Preferably, the sixth temperature range may be [120 ℃,125 ℃), but is not limited to this particular range. The minimum value of the sixth temperature range is greater than the maximum value of the fifth temperature range.
In this control step, where the temperature of the generator 3 and the ambient temperature are very high, the generator 3 needs to be cooled quickly and efficiently, and where ambient air is cooled separately.
Optionally, the control means 9 is arranged to automatically control the opening or closing of the ambient air inlet 20, the line outlet 24 and the line based on the operating temperature of the generator 3 and the detection information of at least one of the aforementioned detection devices. The detection device may comprise at least one of the following: an ambient temperature detection device, a rainfall detection device 31 (detecting ambient rainfall), an ambient air component detection device (preferably detecting humidity and/or salt content of ambient air), a particulate matter content detection device 30 (preferably detecting dust particulate content in ambient air), and/or a wind detection device 32 (preferably detecting wind direction and/or wind speed). Optionally, the foregoing obtaining step further includes: acquiring rainfall information of the environment; the control step comprises the following steps: controlling the operation of at least one of the following devices based on the operation temperature of the generator 3 and the rainfall information: an inlet control valve 22, an outlet control valve 25, a line control valve 26, an ambient fan and a line fan.
Optionally, the aforementioned controlling at least one of the following operations based on the operating temperature and rainfall information of the generator 3 includes: when the rainfall is less than or equal to the preset rainfall and the operating temperature of the generator 3 is within the fifth temperature range, the inlet control valve 22, the outlet control valve 25, the duct control valve 26, the ambient fan and the duct fan are opened. Preferably, the fifth temperature range may be [115 ℃,120 ℃), but is not limited to this particular range.
In this control step, the generator 3 is cooled by the heat exchanger 8 together with the ambient air if there is no or little rainfall.
Optionally, the controlling the operation of at least one of the following devices based on the operating temperature and rainfall information of the generator 3 further comprises: when the rainfall is greater than the preset rainfall and the working temperature of the generator 3 is within a seventh temperature range, closing the air inlet control valve 22, the air outlet control valve 25 and the environmental fan, and opening the pipeline control valve 26 and the pipeline fan; the output power of the generator 3 and thus the operating temperature of the generator 3 is controlled by pitch control (pitch control) and/or by rotational speed control of the rotor of the generator 3. Preferably, the seventh temperature range may be [110 ℃,125 ℃), but is not limited to this particular range.
In this control step, for example, when the rainfall is large, the generator 3 is completely cooled by the heat exchanger 8, and thus contamination and corrosion of rainwater, moisture can be isolated. Further, when the operating temperature of the generator 3 exceeds a predetermined temperature, the operating temperature of the generator 3 may be controlled by controlling the output power of the generator 3, which may be regulated by pitch control (pitch control) and/or by controlling the rotational speed of the rotor of the generator 3. Thereby better protecting the generator 3.
Optionally, the obtaining step further includes: acquiring the content information of particulate matters in the ambient air; the control step comprises the following steps: controlling operation of at least one of the following devices based on the particulate matter content information and the operating temperature of the generator 3: an inlet control valve 22, an outlet control valve 25, a line control valve 26, an ambient fan and a line fan.
Optionally, the aforementioned controlling at least one of the following devices based on the particulate matter content information and the operating temperature of the generator 3 comprises: when the particulate matter content is less than or equal to the predetermined particulate matter content and the operating temperature of the generator 3 is within the eighth temperature range, the inlet control valve 22, the outlet control valve 25, and the line control valve 26 are opened; the ambient fan and the ducted fan are turned on. Preferably, the eighth temperature range may be [110 ℃,120 ℃), but is not limited to this particular range.
In this control step, the generator 3 can be cooled by the heat exchanger 8 and the ambient air simultaneously, when no sand storm occurs in the external environment of the wind power plant and the air is relatively clean with a low content of particulate matter in the air.
Optionally, the controlling operation of at least one of the following devices based on the particulate matter content information and the operating temperature of the generator 3 further comprises: when the particulate matter content is greater than the predetermined particulate matter content, closing the inlet control valve 22, the outlet control valve 25 and the ambient fan, and opening the duct control valve 26 and the duct fan; the output power of the generator 3 and thus the operating temperature of the generator 3 is controlled by pitch control (pitch control) and/or by rotational speed control of the rotor of the generator 3.
In this control step, the generator 3 is cooled solely by the heat exchanger 8 when a sand storm or other air pollution occurs in the external environment of the wind power plant. Further, when the operating temperature of the generator 3 exceeds a predetermined temperature, the operating temperature of the generator 3 may be controlled by controlling the output power of the generator 3, which may be regulated by pitch control (pitch control) and/or by rotational speed control of the rotor (wind turbine rotor) of the generator 3. Thereby better protecting the generator 3.
Optionally, the obtaining step further includes: acquiring wind direction information in the environment; the control step comprises the following steps: based on the wind direction information and the operating temperature of the generator 3, at least one of the following devices is controlled to operate: an inlet control valve 22, an outlet control valve 25, a line control valve 26, an ambient fan and a line fan.
Optionally, the aforementioned controlling at least one of the following devices based on wind direction information and an operating temperature of the generator 3 comprises: when the wind direction is the first predetermined direction and the operating temperature of the generator 3 is within the eighth temperature range, the inlet control valve 22, the outlet control valve 25, and the pipe control valve 26 are opened; the ambient fan and the ducted fan are turned on. Preferably, the eighth temperature range may be [110 ℃,120 ℃), but is not limited to this particular range.
In this control step, for example, the wind power generator set is placed at sea or lake or on the sea or lake, and if the wind is blown from land to sea or Hu Bo, the wind is relatively dry and clean, and the generator 3 is adapted to be cooled by the heat exchanger 8 together with the ambient air.
Optionally, controlling the operation of at least one of the following devices based on the wind direction information and the operating temperature of the generator 3 further comprises: when the wind direction is in the second predetermined direction, the air inlet control valve 22, the air outlet control valve 25 and the ambient fan are closed, the pipeline control valve 26 and the pipeline fan are opened, the output power of the generator 3 is controlled by pitch control (pitch control) and/or by controlling the rotational speed of the rotor of the generator 3, and thus the operating temperature of the generator 3 is controlled.
In this control step, for example, the wind power generator set is placed at sea or lake side, or at sea or lake side, if wind is blown from the sea surface or Hu Bo to land, moisture and salinity in the air are relatively high, and it is not suitable to cool the generator 3 with ambient air, and the generator 3 is cooled by the heat exchanger 8 alone. Further, when the operating temperature of the generator 3 exceeds a predetermined temperature, the operating temperature of the generator 3 may be controlled by controlling the output power of the generator 3, which may be regulated by pitch control (pitch control) and/or by controlling the rotational speed of the rotor of the generator 3. Thereby better protecting the generator 3.
Optionally, the foregoing obtaining step further includes: acquiring salinity information or humidity information in ambient air; the control step comprises the following steps: based on the operating temperature of the generator 3, at least one of the following devices is controlled to operate based on the salinity information or the humidity information: an inlet control valve 22, an outlet control valve 25, a line control valve 26, an ambient fan and a line fan.
Optionally, the controlling at least one of the following devices based on the operating temperature of the generator 3 and the salinity information or the humidity information comprises: when the salinity is less than or equal to a predetermined salinity value and/or when the humidity is less than or equal to a predetermined humidity value; and when the operating temperature of the generator 3 is within the eighth temperature range, the inlet control valve 22, the outlet control valve 25 and the pipeline control valve 26 are opened; the ambient fan and the ducted fan are turned on. Preferably, the eighth temperature range may be [110 ℃,120 ℃), but is not limited to this particular range.
In this control step, for example, if the air is relatively dry and clean, the air contains relatively little moisture and salt, and the generator 3 can be cooled by the heat exchanger 8 and the ambient air.
Optionally, controlling the operation of at least one of the following devices based on the operating temperature of the generator 3, and the salinity information or the humidity information further comprises: when the salinity is greater than a predetermined salinity value, or when the humidity is greater than or equal to a predetermined humidity value; the inlet control valve 22, the outlet control valve 25 and the ambient fan are closed, the line control valve 26 and the line fan are opened, the output power of the generator 3 is controlled by pitch control (pitch control) and/or by rotational speed control of the rotor of the generator 3, and thus the operating temperature of the generator 3 is controlled.
In this control step, for example, the salinity and/or humidity in the air is high, and it is not suitable to cool the generator 3 with ambient air, where the generator 3 is cooled solely by the heat exchanger 8. Further, when the operating temperature of the generator 3 exceeds a predetermined temperature, the operating temperature of the generator 3 may be controlled by controlling the output power of the generator 3, which may be regulated by pitch control (pitch control) and/or by controlling the rotational speed of the rotor of the generator 3. Thereby better protecting the generator 3.
The wind generating set and the control method thereof can realize the following technical effects:
in the wind power generating set and the control method thereof of the embodiment, the generator of the wind power generating set may be cooled by the heat exchanger and/or the ambient air. The cooling mode may be selected based on conditions such as operating temperature of the generator, ambient temperature, ambient air composition, particulate matter content in ambient air, wind direction, and/or rainfall information. An advantage of embodiments of the present invention is that it combines the advantages of both closed loop and open loop cooling systems. When faced with complex and extreme external environments, the wind power generator set may operate in a mode cooled solely by the heat exchanger (closed loop); the temperature of the generator can be controlled in a mode of reducing the maximum power output under the condition of high temperature of the external environment, so that the generator can be effectively protected, and damage to the generator caused by external sand dust, water, salt and fog is reduced. Under the condition of better air quality or higher working temperature of the generator, the heat exchanger 8 and the ambient air can be adopted for cooling together or are independently cooled by the ambient air, so that the cooling efficiency of the generator is improved on the premise of effectively reducing the pollution and corrosion of the outside to the generator, and the working temperature of the generator can be effectively controlled.
The foregoing is merely illustrative of embodiments of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily appreciate variations and substitutions within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (41)
1. The wind generating set comprises a generator (3) and a cooling system of the generator (3); the cooling system comprises a line for circulating air and a heat exchanger (8) for cooling the air; it is characterized in that the method comprises the steps of,
The pipeline is provided with an ambient air inlet (20) and a pipeline air outlet (24) for providing supplementary cooling for the generator (3); wherein the ambient air inlet (20) introduces ambient air into the conduit; the pipeline air outlet (24) discharges air in the pipeline; said ambient air inlet (20) and/or said line outlet (24) being closable,
The cooling mode of the wind generating set comprises the following steps: -using both the heat exchanger (8) and the incoming ambient air cooling, -the ambient air incoming from the ambient air inlet (20) flows together with the air passing through the heat exchanger (8) through the same conduit to the generator (3) to provide cooling for the generator (3).
2. The wind power generation set of claim 1, wherein the cooling means of the wind power generation set further comprises:
Cooling using only the heat exchanger (8); and/or the number of the groups of groups,
Only the incoming ambient air is used for cooling.
3. A wind power plant according to claim 2, further comprising control means (9), said control means (9) controlling the opening or closing of said ambient air inlet (20) and/or said line air outlet (24) for cooling said generator (3) with ambient air.
4. A wind power plant according to claim 3, wherein the piping comprises at least part of the space of a nacelle (5) of the wind power plant or the piping passes through the nacelle (5).
5. A wind power plant according to claim 3 or 4, characterized in that the control means (9) automatically opens or closes the ambient air inlet (20) and/or the line outlet (24) based on the operating temperature or coil temperature of the generator (3); or/and
The wind generating set further comprises temperature detection equipment, wherein the temperature detection equipment is used for detecting the working temperature or the coil temperature of the generator (3).
6. Wind power plant according to claim 3 or 4, further comprising at least one detection device for detecting an environmental condition of the wind power plant, wherein the control means (9) automatically opens or closes the ambient air inlet (20) and/or the pipeline outlet (24) based on detection information of the at least one detection device.
7. The wind power generation set of claim 6, wherein the detection apparatus comprises: an ambient temperature detection device, a rainfall detection device (31), an ambient air component detection device, a particulate matter content detection device (30) and/or a wind detection device (32).
8. A wind power plant according to claim 3 or 4, characterized in that a fan controlled by the control device (9) is provided in the ambient air inlet (20) and/or the line air outlet (24); or/and
A filter (23) is arranged in the ambient air inlet (20).
9. A wind power plant according to claim 3 or 4, characterized in that a dehumidifier (41) is provided in the pipeline, or/and that the wind power plant further comprises an electric heating device (40) for heating the air in the pipeline.
10. Wind power plant according to claim 3 or 4, characterized in that the heat exchanger (8) is an air/air heat exchanger or/and that the generator (3) is a gearless generator.
11. Wind power plant according to claim 10, wherein the generator (3) is a permanent magnet direct drive generator.
12. Wind power generator set according to claim 4, characterized in that the generator (3) comprises a generator air inlet (19) and a generator air outlet (11), which generator air inlet (19) and generator air outlet (11) are arranged on the nacelle side of the generator (3);
-said ambient air inlet (20) introducing air into said conduit between said generator air inlet (19) and said heat exchanger (8); the air outlet (24) of the pipeline discharges the air in the pipeline between the generator air outlet (11) and the heat exchanger (8).
13. Wind power plant according to claim 12, characterized in that the piping is constituted by: the heat exchanger (8) is connected with the generator air inlet (19) through a first generator pipeline (14), the heat exchanger (8) is connected with the generator air outlet (11) through a second generator pipeline (10), and the pipeline air outlet (24) discharges air in the second generator pipeline (10); or the pipeline is formed by the following modes: the heat exchanger (8) is connected with the generator air outlet (11) through a second generator pipeline (10), and the heat exchanger (8), the generator air inlet (19) and the ambient air inlet (20) are communicated with the engine room (5);
wherein an air inlet control valve (22) is arranged in the ambient air inlet (20), and an air outlet control valve (25) is arranged in the pipeline air outlet (24).
14. A method for cooling a wind power plant, wherein a generator (3) of the wind power plant is cooled by air circulating in a pipeline, the circulating air being cooled by a heat exchanger (8); the method is characterized in that:
In order to provide additional cooling, the line introduces ambient air through an ambient air inlet (20) and the air in the line is discharged through a line air outlet (24), wherein the ambient air inlet (20) and/or the line air outlet (24) is opened or closed to control the flow of ambient air,
The cooling mode of the wind generating set comprises the following steps: -using both the heat exchanger (8) and the incoming ambient air cooling, -the ambient air incoming from the ambient air inlet (20) flows together with the air passing through the heat exchanger (8) through the same conduit to the generator (3) to provide cooling for the generator (3).
15. The cooling method according to claim 14, wherein the cooling mode of the wind power generation set includes:
Cooling using only the heat exchanger (8); and/or the number of the groups of groups,
Only the incoming ambient air is used for cooling.
16. A cooling method according to claim 15, characterized in that the ambient air inlet (20) and/or the line air outlet (24) are opened or closed under the control of a control device (9).
17. A cooling method according to any of claims 14-16, characterized in that the piping comprises at least part of the space of the nacelle (5) of the wind power plant or that the piping passes through the nacelle (5).
18. The cooling method according to any one of claims 14-16, characterized in that the wind power plant detects an ambient condition and controls the opening and closing of the ambient air inlet (20) and/or the line air outlet (24) depending on the ambient condition.
19. The cooling method according to claim 18, wherein detecting the environmental condition of the wind power unit is achieved by a detection device comprising: an ambient temperature detection device, a rainfall detection device (31), a particulate content detection device (30) and/or a wind detection device.
20. The cooling method according to any one of claims 14-16, characterized in that the automatic opening and closing of the ambient air inlet (20) and/or the line outlet (24) is controlled based on the operating temperature or coil temperature of the generator (3).
21. The cooling method according to claim 14, characterized in that at least one ambient fan is provided in the ambient air inlet (20) and/or the conduit outlet (24), and that at least one conduit fan is provided in the conduit;
The cooling method further comprises a control step for controlling the intake air flow of the ambient air inlet (20) and/or the exhaust air flow of the pipeline air outlet (24);
the control step includes: -opening or closing the ambient air inlet (20), the conduit outlet (24) and the conduit, and-controlling the ambient fan and/or the conduit fan for controlling the cooling of the generator (3).
22. A cooling method according to claim 21, characterized in that an inlet control valve (22) is provided in the ambient air inlet (20), an outlet control valve (25) is provided in the pipe outlet (24), a pipe control valve (26) is provided in the pipe, the pipe control valve (26) being arranged between the pipe outlet (24) and the heat exchanger (8); the ambient fans comprise at least one inlet fan (21) and at least one outlet fan (28);
The cooling method further includes an acquisition step that is performed before the control step, the acquisition step including: acquiring the working temperature of the generator (3);
wherein the controlling step includes: -controlling the operation of at least one of the following devices based on the operating temperature of the generator (3): the air inlet control valve (22), the air outlet control valve (25), the pipeline control valve (26), the environment fan and the pipeline fan.
23. The cooling method according to claim 22, characterized in that the controlling step includes: -closing the inlet control valve (22) and/or the outlet control valve (25) when the operating temperature of the generator (3) is within a second temperature range, -closing the ambient fan and the line fan.
24. The cooling method according to claim 23, characterized in that the controlling step further comprises: closing the inlet control valve (22) and the outlet control valve (25), closing the ambient fan, opening the line control valve (26) and the line fan when the operating temperature of the generator (3) is within a third temperature range; wherein,
The minimum value of the third temperature range is greater than the maximum value of the second temperature range.
25. The cooling method according to claim 24, characterized in that the controlling step further comprises: -opening the inlet control valve (22), the outlet control valve (25) and the line control valve (26) when the operating temperature of the generator (3) is within a fourth temperature range, opening the ambient fan and the line fan; wherein,
The minimum value of the fourth temperature range is greater than the maximum value of the third temperature range.
26. The cooling method according to claim 25, characterized in that the controlling step further comprises: -opening the inlet control valve (22), the outlet control valve (25) and the ambient fan, closing the line control valve (26) when the operating temperature of the generator (3) is within a fifth temperature range; wherein,
The minimum value of the fifth temperature range is greater than the maximum value of the fourth temperature range.
27. The cooling method according to claim 24, characterized in that the controlling step further comprises: when the working range of the generator (3) is within an eighth temperature range, opening the air inlet control valve (22), the air outlet control valve (25) and the environmental fan, and closing the pipeline control valve (26); wherein,
The minimum value of the eighth temperature range is greater than the maximum value of the third temperature range.
28. The cooling method according to claim 22, characterized in that the controlling step includes:
-controlling the operation of at least one of the following devices based on the operating temperature of the generator (3): the air inlet control valve (22), the air outlet control valve (25), the pipeline control valve (26), the environment fan and the pipeline fan.
29. The cooling method according to claim 28, characterized in that said controlling the operation of at least one of the following devices based on the operating temperature of the generator (3) comprises:
-opening the inlet control valve (22), the outlet control valve (25) and the ambient fan when the operating temperature of the generator (3) is within a sixth temperature range; closing the line control valve (26) and the line fan.
30. The cooling method according to claim 22, wherein the obtaining step further includes: acquiring rainfall information of the environment;
The control step includes: -controlling the operation of at least one of the following devices based on the operating temperature of the generator (3) and the rainfall information: the air inlet control valve (22), the air outlet control valve (25), the pipeline control valve (26), the environment fan and the pipeline fan.
31. The cooling method according to claim 30, wherein said controlling at least one of the following devices to operate based on the operating temperature of the generator (3) and the rainfall information comprises:
when the rainfall is less than or equal to a preset rainfall and the operating temperature of the generator (3) is within a fifth temperature range, opening the inlet control valve (22), the outlet control valve (25), the pipeline control valve (26), the ambient fan and the pipeline fan.
32. The cooling method according to claim 30, wherein said controlling at least one of the following devices to operate based on the operating temperature of the generator (3) and the rainfall information further comprises:
When the rainfall is greater than a preset rainfall and the working temperature of the generator (3) is within a seventh temperature range, closing the air inlet control valve (22), the air outlet control valve (25) and the environmental fan, and opening the pipeline control valve (26) and the pipeline fan; -controlling the output power of the generator (3) by pitch control and/or by rotational speed control of the rotor of the generator (3), thereby controlling the operating temperature of the generator (3).
33. The cooling method according to claim 22, wherein the obtaining step further includes: acquiring the content information of particulate matters in the ambient air;
The control step includes: controlling operation of at least one of the following devices based on the particulate matter content information and the operating temperature of the generator (3): the air inlet control valve (22), the air outlet control valve (25), the pipeline control valve (26), the environment fan and the pipeline fan.
34. The cooling method according to claim 33, characterized in that said controlling the operation of at least one of the following devices based on said particulate matter content information and said operating temperature of said generator (3) comprises:
opening the inlet control valve (22), the outlet control valve (25) and the line control valve (26) when the particulate matter content is less than or equal to a predetermined particulate matter content and the operating temperature of the generator (3) is within an eighth temperature range; and starting the environment fan and the pipeline fan.
35. The cooling method according to claim 33, characterized in that said controlling the operation of at least one of the following devices based on said particulate matter content information and said operating temperature of said generator (3) further comprises:
closing the inlet control valve (22), the outlet control valve (25) and the ambient fan when the particulate matter content is greater than a predetermined particulate matter content, opening the conduit control valve (26) and the conduit fan; -controlling the output power of the generator (3) by pitch control and/or by rotational speed control of the rotor of the generator (3), thereby controlling the operating temperature of the generator (3).
36. The cooling method according to claim 22, wherein the obtaining step further includes: acquiring wind direction information in the environment;
The control step includes: -controlling the operation of at least one of the following devices based on the wind direction information and the operating temperature of the generator (3): the air inlet control valve (22), the air outlet control valve (25), the pipeline control valve (26), the environment fan and the pipeline fan.
37. The cooling method according to claim 36, characterized in that said controlling the operation of at least one of the following devices based on the wind direction information and the operating temperature of the generator (3) comprises:
Opening the inlet control valve (22), the outlet control valve (25) and the line control valve (26) when the wind direction is a first predetermined direction and the operating temperature of the generator (3) is within an eighth temperature range; and starting the environment fan and the pipeline fan.
38. The cooling method according to claim 36, characterized in that said controlling the operation of at least one of the following devices based on said wind direction information and said operating temperature of said generator (3) further comprises:
When the wind direction is in a second preset direction, the air inlet control valve (22), the air outlet control valve (25) and the environmental fan are closed, the pipeline control valve (26) and the pipeline fan are opened, the output power of the generator (3) is controlled through pitch control and/or through the rotating speed control of the rotor of the generator (3), and then the working temperature of the generator (3) is controlled.
39. The cooling method according to claim 22, wherein the obtaining step further includes: acquiring salinity information or humidity information of ambient air;
the control step includes: -controlling at least one of the following devices to operate based on the operating temperature of the generator (3) and the salinity information or humidity information: the air inlet control valve (22), the air outlet control valve (25), the pipeline control valve (26), the environment fan and the pipeline fan.
40. The cooling method according to claim 39, characterized in that said controlling the operation of at least one of the following devices based on the operating temperature of the generator (3) and the salinity information or humidity information comprises:
When the salinity is less than or equal to a predetermined salinity value, and/or when the humidity is less than or equal to a predetermined humidity; and when the operating temperature of the generator (3) is within an eighth temperature range, opening the inlet control valve (22), the outlet control valve (25) and the pipeline control valve (26); and starting the environment fan and the pipeline fan.
41. The cooling method according to claim 39, characterized in that said controlling the operation of at least one of the following devices based on the operating temperature of the generator (3) and the salinity information or humidity information further comprises:
When the salinity is greater than a predetermined salinity value, and/or when the humidity is greater than or equal to a predetermined humidity value; closing the air inlet control valve (22), the air outlet control valve (25) and the environmental fan, opening the pipeline control valve (26) and the pipeline fan, controlling the output power of the generator (3) through pitch control and/or through rotational speed control of a rotor of the generator (3), and further controlling the working temperature of the generator (3).
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| CN109139396B (en) * | 2018-08-07 | 2020-05-08 | 北京金风科创风电设备有限公司 | Cooling system and cooling method of wind generating set and wind driven generator |
| CN110635626B (en) * | 2018-08-31 | 2020-11-17 | 北京金风科创风电设备有限公司 | Electrical equipment, heat exchange medium conveying device thereof and wind generating set |
| CN109578227A (en) * | 2018-11-09 | 2019-04-05 | 大唐向阳风电有限公司 | A kind of pressure cooling system for Wind turbine pitch control cabinet |
| CN112780509B (en) * | 2019-11-01 | 2023-07-28 | 新疆金风科技股份有限公司 | Air cooling system, wind generating set and cooling method thereof |
| CN111648915B (en) * | 2020-05-21 | 2021-04-16 | 浙江大学 | Cooling control method, system, equipment and storage medium of wind driven generator |
| CN112832961B (en) * | 2021-02-05 | 2022-03-08 | 中国华能集团清洁能源技术研究院有限公司 | Pneumatic deicing system for blades of wind turbine generator and working method of pneumatic deicing system |
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