CN-117189525-B - Heat dissipation system control method, wind generating set and computer readable storage medium

CN117189525BCN 117189525 BCN117189525 BCN 117189525BCN-117189525-B

Abstract

The invention relates to the technical field of wind power, in particular to a control method of a heat dissipation system, a wind generating set and a computer readable storage medium, wherein the method comprises the steps of determining the required heat dissipation capacity of the heat dissipation system, and determining the system heat dissipation capacity of the heat dissipation system based on the heat dissipation wind temperature, the heat dissipation wind speed and the cooling liquid side inlet temperature of the heat dissipation system; and if the system heat dissipation capacity does not meet the required heat dissipation capacity, returning to the step of detecting whether the system heat dissipation capacity meets the required heat dissipation capacity after adjusting the air volume and air pressure characteristics of a heat dissipation fan in the heat dissipation system until the system heat dissipation capacity meets the required heat dissipation capacity. The invention realizes the improvement of the control accuracy of the axial fan, thereby improving the heat dissipation effect of the heat dissipation system of the wind turbine.

Inventors

ZHANG XIAOYAO
LI JINMENG
WU BAOPENG

Assignees

三一重能股份有限公司

Dates

Publication Date: 20260505
Application Date: 20231016

Claims (10)

1. The heat dissipation system control method is characterized by comprising the following steps of: Determining a required heat dissipating capacity of a heat dissipating system, and determining a system heat dissipating capacity of the heat dissipating system based on a heat dissipating wind temperature, a heat dissipating wind speed and a cooling liquid side inlet temperature of the heat dissipating system; detecting whether the system heat dissipation capacity meets the required heat dissipation capacity; If the system heat dissipation capacity does not meet the required heat dissipation capacity, after the air volume and air pressure characteristics of a heat dissipation fan in the heat dissipation system are adjusted, returning to the step of detecting whether the system heat dissipation capacity meets the required heat dissipation capacity or not until the system heat dissipation capacity meets the required heat dissipation capacity; the heat dissipation wind speed at least comprises the wind speed of a forced air cooling area in the heat dissipation system and the wind speed of a natural air cooling area in the heat dissipation system; the cooling liquid side inlet temperature at least comprises the cooling liquid side inlet temperature of the forced air cooling zone and the cooling liquid side inlet temperature of the natural air cooling zone; the step of determining the system heat dissipation capacity of the heat dissipation system based on the heat dissipation air temperature, the heat dissipation air speed and the cooling liquid side inlet temperature of the heat dissipation system comprises the following steps: Calculating the cooling liquid side inlet temperature of the forced air cooling zone to subtract the heat dissipation air temperature of the heat dissipation system so as to obtain a forced heat dissipation temperature difference; Determining a forced heat exchange factor of the forced air cooling zone based on the wind speed of the forced air cooling zone, and determining the forced heat exchange efficiency of the forced air cooling zone based on the forced heat exchange factor; Calculating the product of the forced heat exchange efficiency, the forced heat dissipation temperature difference and the heat capacity to obtain the forced heat dissipation capacity of the forced air cooling area; calculating the cooling liquid side inlet temperature of the natural wind cooling area to subtract the heat dissipation wind temperature so as to obtain a natural heat dissipation temperature difference; Determining a natural heat exchange factor of the natural wind cooling zone based on the wind speed of the natural wind cooling zone, and determining the natural heat exchange efficiency of the natural wind cooling zone based on the natural heat exchange factor; Calculating the product of the natural heat exchange efficiency, the natural heat dissipation temperature difference and the heat capacity to obtain the natural heat dissipation capacity of the natural air cooling area; and calculating the sum of the forced heat dissipation capacity and the natural heat dissipation capacity to obtain the system heat dissipation capacity of the heat dissipation system.
2. The heat radiation system control method according to claim 1, wherein the step of determining the forced heat exchange efficiency of the forced air cooling zone based on the forced heat exchange factor includes: correcting the forced heat exchange factor through a preset first correction coefficient to obtain a corrected forced heat exchange factor; calculating the heat exchange efficiency of the forced air cooling area through the corrected forced heat exchange factor; the step of determining the natural heat exchange efficiency of the natural wind cooling area based on the natural heat exchange factor comprises the following steps: Correcting the natural heat exchange factor through a preset second correction coefficient to obtain a corrected natural heat exchange factor; And calculating the heat exchange efficiency of the natural air cooling area through the corrected natural heat exchange factor.
3. The heat radiation system control method according to claim 1, further comprising, before the step of determining the forced heat exchange factor of the forced air cooling zone based on the wind speed of the forced air cooling zone: Calculating the required air quantity of the forced air cooling area based on an air quantity and air pressure curve of an axial flow fan in the forced air cooling area and a resistance curve of a radiator; calculating to obtain the basic wind speed of the forced air cooling area based on the required wind quantity and the ventilation area of the forced air cooling area; and correcting the basic wind speed through a preset wind speed correction coefficient and an incoming wind speed, and taking the corrected basic wind speed as the wind speed of the forced air cooling area.
4. The heat radiation system control method as claimed in claim 1, wherein said heat radiation system is in an in-use state; The step of determining the required heat dissipation capacity of the heat dissipation system includes: determining the required heat dissipation capacity of the heat dissipation system based on the incoming wind speed of natural wind in the environment where the heat dissipation fan is located; before the step of determining the system heat dissipation capacity of the heat dissipation system based on the heat dissipation air temperature, the heat dissipation air speed and the cooling liquid side inlet temperature of the heat dissipation system, the method further comprises the following steps: taking the actual air temperature of the heat radiation system as the heat radiation air temperature of the heat radiation system; Taking the actual wind speed of the forced air cooling area as the wind speed of the forced air cooling area, and taking the incoming wind speed as the wind speed of the natural air cooling area; and taking the actual inlet temperature of the cooling liquid side of the forced air cooling zone as the cooling liquid side inlet temperature of the forced air cooling zone, and taking the actual inlet temperature of the cooling liquid side of the natural air cooling zone as the cooling liquid side inlet temperature of the natural air cooling zone.
5. The method of claim 4, wherein the step of adjusting the wind volume and wind pressure characteristics of the heat dissipation fan in the heat dissipation system comprises: and adjusting the fan frequency of a cooling fan in the cooling system so as to adjust the air quantity and wind pressure characteristics of the cooling fan.
6. The heat radiation system control method as claimed in claim 1, wherein the heat radiation system is in a design state; The step of determining the required heat dissipation capacity of the heat dissipation system includes: Taking the designed heat dissipation capacity of the heat dissipation system as the required heat dissipation capacity of the heat dissipation system; before the step of determining the system heat dissipation capacity of the heat dissipation system based on the heat dissipation air temperature, the heat dissipation air speed and the cooling liquid side inlet temperature of the heat dissipation system, the method further comprises the following steps: acquiring a preset wind speed and a design ventilation area of a forced air cooling zone in the heat radiation system, and calculating to obtain an estimated wind quantity of the forced air cooling zone; Calculating an estimated wind speed of the forced air cooling area based on the estimated wind quantity, and taking the estimated wind speed as the wind speed of the forced air cooling area; And taking the design wind temperature of the heat dissipation system as the heat dissipation wind temperature, taking the design wind speed of the natural wind cooling zone as the wind speed of the natural wind cooling zone, taking the design inlet temperature of the cooling liquid side of the forced air cooling zone as the cooling liquid side inlet temperature of the forced air cooling zone, and taking the design inlet temperature of the cooling liquid side of the natural wind cooling zone as the cooling liquid side inlet temperature of the natural wind cooling zone.
7. The method of claim 6, wherein the step of adjusting the wind volume and wind pressure characteristics of the heat dissipation fan in the heat dissipation system comprises: And adjusting the preset wind speed to adjust the wind quantity and wind pressure characteristics of the heat radiation fan.
8. The heat radiation system control method as claimed in any one of claims 6 to 7, further comprising, after the step of detecting whether the system heat radiation amount satisfies the required heat radiation amount: If the system heat dissipation capacity meets the required heat dissipation capacity, calculating to obtain estimated wind pressure of the forced air cooling area based on the environmental parameters of the environment to be used of the heat dissipation system and the preset wind speed; calculating to obtain estimated power based on the estimated air volume and the estimated air pressure; Determining a target axial flow fan from preset axial flow fans based on the estimated air volume, the estimated air pressure and the estimated power; And if the predicted heat dissipation capacity generated by the target axial flow fan meets the required heat dissipation capacity, using the target axial flow fan as a heat dissipation fan of the heat dissipation system.
9. A wind power generator set, characterized in that the wind power generator set comprises a heat dissipation system, which when performing heat dissipation, realizes the steps of the heat dissipation system control method according to any one of claims 1 to 8.
10. A computer-readable storage medium, wherein a heat dissipation system control program is stored on the computer-readable storage medium, which when executed by a processor, implements the steps of the heat dissipation system control method according to any one of claims 1 to 8.

Description

Heat dissipation system control method, wind generating set and computer readable storage medium Technical Field The invention relates to the technical field of wind power, in particular to a heat dissipation system control method, a wind generating set and a computer readable storage medium. Background The wind generating set is power equipment for converting wind energy into electric energy, and as the generating capacity of the wind generating set is increased, the heating value of a heating component in the wind generating set is continuously increased, so that the equipment safety and the service life of the wind generating set are affected, and therefore, the wind generating set needs to be radiated. In recent years, with the increase of the power level of the wind generating set, the heat dissipation requirement of the wind generating set is increased, and the water cooling heat dissipation system is more and more widely applied due to the heat dissipation effect. At present, the wind generating set mainly adopts an active water cooling mode for heat dissipation, and the active water cooling mode is provided with all accessories of the water cooling radiator and is also provided with an axial flow fan for auxiliary heat dissipation, so that compared with a pure water cooling radiator, the active water cooling mode has a better heat dissipation effect. In the control process of the active water-cooling radiator, the active water-cooling radiator is controlled mainly based on the temperature of the cooling liquid of the radiator, and the control process is that when the temperature of the inlet of the cooling liquid of the radiator is lower than the temperature set by a program, the auxiliary heat dissipation of the axial flow fan is stopped or the axial flow fan is kept in the existing working state, and when the temperature of the inlet of the cooling liquid of the radiator is higher than the temperature set by the program, the auxiliary heat dissipation of the axial flow fan is started or the axial flow fan is kept in the existing working state. However, the mode of controlling the working state of the axial flow fan according to the temperature of the cooling liquid cannot accurately meet the heat dissipation requirement of the wind generating set, so that the heat dissipation effect of the radiator is influenced. Disclosure of Invention The invention mainly aims to provide a control method of a heat dissipation system, a wind generating set and a computer readable storage medium, and aims to improve the control accuracy of a convection fan so as to improve the heat dissipation effect of water cooling heat dissipation. In order to achieve the above object, the present invention provides a heat dissipation system control method, including the steps of: Determining a required heat dissipating capacity of a heat dissipating system, and determining a system heat dissipating capacity of the heat dissipating system based on a heat dissipating wind temperature, a heat dissipating wind speed and a cooling liquid side inlet temperature of the heat dissipating system; detecting whether the system heat dissipation capacity meets the required heat dissipation capacity; If the system heat dissipation capacity does not meet the required heat dissipation capacity, after the air volume and air pressure characteristics of the heat dissipation fans in the heat dissipation system are adjusted, returning to execute the step of detecting whether the system heat dissipation capacity meets the required heat dissipation capacity or not until the system heat dissipation capacity meets the required heat dissipation capacity. Optionally, the heat dissipation wind speed at least comprises the wind speed of a forced air cooling area in the heat dissipation system and the wind speed of a natural air cooling area in the heat dissipation system; the cooling liquid side inlet temperature at least comprises the cooling liquid side inlet temperature of the forced air cooling zone and the cooling liquid side inlet temperature of the natural air cooling zone; the step of determining the system heat dissipation capacity of the heat dissipation system based on the heat dissipation air temperature, the heat dissipation air speed and the cooling liquid side inlet temperature of the heat dissipation system comprises the following steps: Calculating the cooling liquid side inlet temperature of the forced air cooling zone to subtract the heat dissipation air temperature of the heat dissipation system so as to obtain a forced heat dissipation temperature difference; Determining a forced heat exchange factor of the forced air cooling zone based on the wind speed of the forced air cooling zone, and determining the forced heat exchange efficiency of the forced air cooling zone based on the forced heat exchange factor; Calculating the product of the forced heat exchange efficiency, the forced heat dissipation temperature difference and the heat c