CN109667730B - Intelligent heat dissipation method and device for generator of wind generating set - Google Patents
Intelligent heat dissipation method and device for generator of wind generating set Download PDFInfo
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- CN109667730B CN109667730B CN201710959675.2A CN201710959675A CN109667730B CN 109667730 B CN109667730 B CN 109667730B CN 201710959675 A CN201710959675 A CN 201710959675A CN 109667730 B CN109667730 B CN 109667730B
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- generator
- temperature
- heat dissipation
- gear
- wind generating
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/02—Pumps characterised by combination with or adaptation to specific driving engines or 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 discloses an intelligent heat dissipation method for a generator of a wind generating set, which is characterized in that when the temperature of the generator is not more than a set threshold and the output power is more than the rated power, or the temperature of the generator is more than the set threshold, power is supplied through a power grid, a gear pump is driven to drive a motor to drive a gear vane pump to dissipate heat; when the temperature of the generator is not more than a set threshold value and the output power is not more than the rated power, the gear vane pump is driven to dissipate heat through the output auxiliary shaft of the gear box. The invention also discloses a heat dissipation device, which comprises a temperature detection unit, a control unit and a switching unit, wherein the switching unit is used for switching the gear vane pump to be connected with the gear pump driving motor or the gear box output auxiliary shaft; the temperature detection unit is used for detecting the temperature of the generator and sending the temperature to the control unit, and the control unit controls the switching unit according to the temperature of the generator and the output power. The intelligent heat dissipation method and the intelligent heat dissipation device for the generator of the wind generating set have the advantages of reliable heat dissipation, improvement of generated energy and the like.
Description
Technical Field
The invention mainly relates to the technical field of wind power, in particular to an intelligent heat dissipation method and device for a generator of a wind generating set.
Background
At present, when the wind generating set generator which can only be applied to the conventional altitude is directly used in the high altitude area, the generator adopts the traditional fan to radiate heat, the input power of the fan is constant, and the heat which needs to be radiated is different under the environment conditions of different environments and different altitudes of the generator, so that certain waste exists, the generator needs to be redesigned, and the universality is poor.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the technical problems in the prior art, the invention provides an intelligent heat dissipation method and device for a generator of a wind generating set, which can improve the generating capacity.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
when the temperature of the generator is not more than a set threshold value and the output power of the wind generating set is more than the rated power, the power is supplied through a power grid, and a gear pump is driven to drive a motor to drive a gear vane pump to carry out heat dissipation work;
when the temperature of the generator is higher than a set threshold value, the power is supplied through a power grid, and the gear pump is driven to drive the gear vane pump to carry out heat dissipation work;
when the temperature of the generator is not more than a set threshold value and the output power of the wind generating set is not more than the rated power, the gear blade pump is driven to carry out heat dissipation work through the output auxiliary shaft of the gear box.
As a further improvement of the above technical solution:
the output auxiliary shaft of the gear box drives the gear vane pump to perform heat dissipation work in a gear meshing, belt transmission or chain transmission mode.
According to temperature threshold curves of the generator at different altitudes and different temperatures, when the temperature of the generator is not greater than a corresponding point on the temperature threshold curve, air output by the gear vane pump directly enters a heat dissipation air inlet pipeline of the generator;
when the temperature of the generator is higher than the corresponding point on the temperature threshold curve, the air output by the gear vane pump enters the heat dissipation air inlet pipeline of the generator after being compressed.
According to theoretical calculation and test data of air density temperature rise of the generator at different altitudes, temperature threshold curves of the generator at different altitudes and under different current temperature conditions of the generator are designed.
The compressed air pressure is sensed and compared to a set point to adjust the air retraction.
The given value corresponds to the generator temperature.
The invention also correspondingly discloses an intelligent heat dissipation device for the generator of the wind generating set, which comprises a temperature detection unit, a control unit and a switching unit, wherein the temperature detection unit and the switching unit are connected with the control unit; the temperature detection unit is used for detecting the temperature of the generator and sending the temperature to the control unit, and the control unit controls the switching of the switching unit according to the temperature of the generator and the output power.
As a further improvement of the above technical solution:
the gear vane pump is directly connected with a heat dissipation air inlet pipeline of the generator through a reversing valve; or the generator is connected with the heat dissipation air inlet pipeline of the generator through a compressor after passing through the reversing valve; the control unit selects whether air passes through the compressor or not according to the temperature of the generator.
Compared with the prior art, the invention has the advantages that:
according to the intelligent heat dissipation method and device for the generator of the wind generating set, the temperature of the generator is detected and compared with the preset threshold value, so that the power source of the gear vane pump is selected according to the comparison result and the output power, heat dissipation is reliable, and the generating capacity is improved.
Drawings
FIG. 1 is a flow chart of the method of the present invention.
Detailed Description
The invention is further described below with reference to the figures and the specific embodiments of the description.
As shown in fig. 1, in the intelligent heat dissipation method for the generator of the wind turbine generator set according to the embodiment, when the temperature of the generator is not higher than a set threshold and the output power of the wind turbine generator set is higher than a rated power, power is supplied through a power grid, and a gear pump driving motor drives a gear vane pump to perform heat dissipation work; because the power reaches the rated power, the self-power consumption management of the heat dissipation of the generator is not needed, and the generating capacity is improved;
when the temperature of the generator is higher than a set threshold value, the power is supplied through a power grid, and the gear pump is driven to drive the gear vane pump to carry out heat dissipation work; at the moment, the over-temperature of the generator is prevented no matter the output power of the wind generating set;
when the temperature of the generator is not more than a set threshold value and the output power of the wind generating set is not more than the rated power, the gear blade pump is driven to carry out heat dissipation work through the output auxiliary shaft of the gear box; the generator is subjected to heat dissipation and self-power consumption management, so that the generated energy of the wind generating set is improved.
Specifically, an output countershaft of the gear box drives a gear vane pump to perform heat dissipation work in a gear meshing mode; of course, in other embodiments, other transmission modes such as belt transmission or chain transmission can be adopted.
In the embodiment, according to the temperature threshold curves of the generator at different altitudes and different temperatures, when the temperature of the generator is not greater than the corresponding point on the temperature threshold curve, the air output by the gear vane pump directly enters the heat dissipation air inlet pipeline of the generator, so that the self-consumption power loss of the heat dissipation of the generator is reduced;
when the temperature of the generator is higher than the corresponding point on the temperature threshold curve, the air output by the gear vane pump is compressed and then enters the heat dissipation air inlet pipeline of the generator, so that the mass of the air entering the heat dissipation air inlet pipeline of the generator in unit volume per unit time is improved, and the purpose of reducing the temperature of the generator is achieved.
In the embodiment, according to theoretical calculation and test data of air density and temperature rise of the generator at different altitudes, temperature threshold curves of the generator at different altitudes and under different current temperature conditions of the generator are designed.
In this embodiment, the compressed air pressure is sensed and compared to a set point to adjust the air pressure retraction.
As shown in fig. 1, the invention also correspondingly discloses an intelligent heat dissipation device for a generator of a wind generating set, which comprises a temperature detection unit, a control unit and a switching unit, wherein the temperature detection unit and the switching unit are connected with the control unit, and the switching unit is used for switching a gear vane pump to be connected with a gear pump driving motor or a gear box output auxiliary shaft; the temperature detection unit is used for detecting the temperature of the generator and sending the temperature to the control unit, and the control unit controls the switching of the switching unit according to the temperature of the generator and the output power.
In the embodiment, the gear vane pump is directly connected with a heat dissipation air inlet pipeline of the generator through the reversing valve; or the air inlet pipe is connected with the generator heat dissipation pipeline through a compressor after passing through the reversing valve; the control unit selects whether air passes through the compressor or not according to the temperature of the generator.
The heat dissipation method of the present invention is further described below with reference to the heat dissipation device:
as shown in fig. 1, the heat sink includes an air intake valve, a gear vane pump, a drive switch, a gear pump drive motor, a gear box output counter shaft, and a generator temperature sensor, and air is taken in from the nacelle through the air intake valve by the gear vane pump. The operation of the gear vane pump has two power driving modes: one is directly connected with a gear vane pump reduction mechanism through a gear box output auxiliary shaft, or can be transmitted through a gear synchronous belt, or is transmitted through a gear chain; the other is that power is supplied through a power grid, and a gear pump driving motor drives a gear vane pump to work; the two powers are switched by a change-over switch. The action of the change-over switch is selected by the control unit after the temperature signal detected by the generator temperature sensor is integrated with the output power.
Specifically, (1) when the temperature of the generator is less than or equal to a set threshold value of the temperature of the generator and the output power of the wind generating set is greater than the rated power, the selector switch is switched to the gear pump to drive the motor to work, and the power reaches the rated power, so that the generated energy is improved without heat dissipation and self-power consumption management of the generator;
(2) when the temperature of the generator is higher than a set threshold value, no matter the output power of the wind generating set, the selector switch is switched to the gear pump to drive the motor to work, so that the over-temperature of the generator is prevented;
(3) when the power generation temperature is less than or equal to the set threshold of the generator temperature and the power of the generator is less than or equal to the rated power of the generator, the change-over switch is switched to the output auxiliary shaft of the gear box to work, the heat dissipation self-power consumption management of the generator is carried out, and the generated energy of the wind generating set is improved.
When the change-over switch is in the switching process of two working modes, an action saturator is designed to reduce the impact caused by switching of two powers.
In addition, the system also comprises a reversing valve, a reversing valve controller, a temperature control module, a generator temperature sensor, an air compressor, a pressure sensor, a temperature-pressure setting control module and an air compressor controller.
Air pumped by the gear vane pump enters the air compressor through the reversing valve and then enters the generator heat dissipation air inlet pipeline or directly enters the generator heat dissipation air inlet pipeline through the reversing valve. Whether the air entering the reversing valve needs to be compressed or not is controlled by the temperature control module. The temperature control module obtains the temperature of the generator measured by the temperature sensor, and according to theoretical calculation and test data of air density temperature rise of the generator at different altitudes, threshold curves at different altitudes (namely different air densities) and under different current temperature conditions of the generator are designed to judge the action of the reversing valve. When the designed condition is less than or equal to the set threshold value, the air passing through the reversing valve directly enters the generator heat dissipation air inlet pipeline without being compressed, so that the self-consumption power loss of the generator heat dissipation is reduced; when the designed condition is larger than the designed threshold value, the air passing through the reversing valve enters the air compressor to be compressed, and the mass of the air entering the heat dissipation air inlet pipeline of the generator in unit volume per unit time is improved, so that the aim of reducing the temperature of the generator is fulfilled. The air compressor needs to obtain output air pressure, the air compressor controller is driven by the temperature-pressure setting control module to set the pressure, the temperature-pressure setting control module collects outlet pressure of the compressor through the pressure sensor and compares the outlet pressure with a current pressure setting value, a required pressure value is obtained and set through the air compressor controller, the pressure setting value also needs to output a corresponding pressure setting requirement under the current temperature condition through the temperature control module, so that the pressure output of the air compressor is controlled, the work of the compressor is reduced to the minimum extent, the given requirement of the heat dissipation intake air density of the generator is met, the intelligent self-power consumption management of the heat dissipation of the generator is achieved, and the conventional wind generating set generator can be expanded to be used under the high altitude condition.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may be made by those skilled in the art without departing from the principle of the invention.
Claims (8)
1. An intelligent heat dissipation method for a generator of a wind generating set is characterized in that when the temperature of the generator is not higher than a set threshold of the temperature of the generator and the output power of the wind generating set is higher than the rated power, power is supplied through a power grid, a gear pump is driven to drive a motor to drive a gear vane pump to carry out heat dissipation work;
when the temperature of the generator is higher than a set threshold value of the temperature of the generator, the power is supplied through a power grid, and the gear pump is driven to drive the gear vane pump to carry out heat dissipation work;
when the temperature of the generator is not more than the set threshold of the temperature of the generator and the output power of the wind generating set is not more than the rated power, the gear blade pump is driven to carry out heat dissipation work through the output auxiliary shaft of the gear box.
2. The intelligent heat dissipation method for the generator of the wind generating set according to claim 1, wherein the output auxiliary shaft of the gearbox drives the gear vane pump to perform heat dissipation work in a gear meshing, belt transmission or chain transmission mode.
3. The intelligent heat dissipation method for the generator of the wind generating set according to claim 1 or 2, wherein according to temperature threshold curves of the generator at different altitudes and at different temperatures, when the temperature of the generator is not greater than corresponding points on the temperature threshold curves, air output by the gear vane pump directly enters a heat dissipation air inlet pipeline of the generator;
when the temperature of the generator is higher than the corresponding point on the temperature threshold curve, the air output by the gear vane pump enters the heat dissipation air inlet pipeline of the generator after being compressed.
4. The intelligent heat dissipation method for the generator of the wind generating set according to claim 3, wherein temperature threshold curves under different altitudes and current temperature conditions of the generator are designed according to theoretical calculation and test data of air density and temperature rise of the generator under different altitudes.
5. The intelligent heat dissipation method for wind generating set generators of claim 3, wherein the compressed air pressure is detected and compared to a given value to adjust air pressure retraction.
6. The intelligent heat dissipation method for the wind generating set generator according to claim 5, wherein the given value corresponds to a generator temperature.
7. The intelligent heat dissipation device for the generator of the wind generating set is characterized by comprising a temperature detection unit, a control unit and a switching unit, wherein the temperature detection unit and the switching unit are connected with the control unit; the temperature detection unit is used for detecting the temperature of the generator and sending the temperature to the control unit, and the control unit controls the switching of the switching unit according to the temperature of the generator and the output power according to the intelligent heat dissipation method of the generator of the wind generating set as claimed in any one of claims 1 to 6.
8. The intelligent heat dissipation device for the generator of the wind generating set according to claim 7, wherein the gear vane pump is directly connected with a heat dissipation air inlet pipeline of the generator through a reversing valve; or the generator is connected with the heat dissipation air inlet pipeline of the generator through a compressor after passing through the reversing valve; the control unit selects whether air passes through the compressor or not according to the temperature of the generator.
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| CN201710959675.2A CN109667730B (en) | 2017-10-16 | 2017-10-16 | Intelligent heat dissipation method and device for generator of wind generating set |
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| CN201710959675.2A CN109667730B (en) | 2017-10-16 | 2017-10-16 | Intelligent heat dissipation method and device for generator of wind generating set |
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| CN110995118B (en) * | 2019-12-09 | 2021-06-25 | 绍兴市上虞区理工高等研究院 | Method, device and system for adjusting heat dissipation power of permanent magnet motor |
| CN111648915B (en) * | 2020-05-21 | 2021-04-16 | 浙江大学 | Cooling control method, system, equipment and storage medium of wind driven generator |
| CN112196733A (en) * | 2020-11-05 | 2021-01-08 | 华能新能源上海发电有限公司 | Self-power consumption control method for wind generating set |
| CN117200647B (en) * | 2023-11-01 | 2024-03-19 | 浙江万里扬新能源驱动有限公司杭州分公司 | Method for inhibiting working overheat of gear selecting and shifting motor of automobile transmission and vehicle |
| CN117605589B (en) * | 2024-01-24 | 2024-03-29 | 山西汇达电信设备有限公司 | Energy-saving control method of diesel generator |
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| US20080307817A1 (en) * | 2007-06-18 | 2008-12-18 | General Electric Company | System for integrated thermal management and method for the same |
| US20090200114A1 (en) * | 2008-02-08 | 2009-08-13 | General Electric Company | Thermal management system and wind turbine incorporating same |
| WO2012077009A2 (en) * | 2010-12-10 | 2012-06-14 | Soliton Holdings Corporation, Delaware Corporation | Renewable stream energy use |
| ES2378099B1 (en) * | 2009-10-09 | 2013-02-18 | Gamesa Innovation & Technology S.L. | AUXILIARY REFRIGERATION SYSTEM AND PERFORMANCE METHOD. |
| EP2573388B1 (en) * | 2011-09-22 | 2018-11-07 | Moventas Gears Oy | A method for controlling lubrication of a gear unit and a gear unit |
| US10151301B2 (en) * | 2013-01-25 | 2018-12-11 | Vestas Wind Systems A/S | Control of wind turbines |
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