CN114498507B - Conductive bar cooling system, control method and control device thereof and electronic equipment - Google Patents
Conductive bar cooling system, control method and control device thereof and electronic equipment Download PDFInfo
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- CN114498507B CN114498507B CN202210138824.XA CN202210138824A CN114498507B CN 114498507 B CN114498507 B CN 114498507B CN 202210138824 A CN202210138824 A CN 202210138824A CN 114498507 B CN114498507 B CN 114498507B
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- 238000001816 cooling Methods 0.000 title claims abstract description 141
- 238000000034 method Methods 0.000 title claims abstract description 51
- 230000001105 regulatory effect Effects 0.000 claims abstract description 117
- 230000001276 controlling effect Effects 0.000 claims abstract description 58
- 239000002826 coolant Substances 0.000 claims abstract description 56
- 238000012545 processing Methods 0.000 claims description 25
- 238000004590 computer program Methods 0.000 claims description 22
- 239000003507 refrigerant Substances 0.000 claims description 16
- 238000004891 communication Methods 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 12
- 230000017525 heat dissipation Effects 0.000 description 18
- 239000004020 conductor Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000006870 function Effects 0.000 description 5
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G5/00—Installations of bus-bars
- H02G5/10—Cooling
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- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention provides a conductive bar cooling system, a control method and a control device thereof and electronic equipment. The conductive bar cooling system comprises a coolant pump, a cooler, a flow regulating valve and a cooling pipeline, wherein the cooling pipeline is connected with the conductive bar, and coolant circulates in the conductive bar cooling system and the conductive bar to dissipate heat of the conductive bar; the control method comprises the following steps: acquiring the temperature of the conductive bars; if the temperature of the conductive bar is higher than the first set temperature, controlling the flow regulating valve to be opened, wherein the initial opening of the flow regulating valve is not the maximum opening when the flow regulating valve is opened; after the flow regulating valve is opened, if the duration time that the temperature of the conductive bar is greater than the first set temperature is longer than the first set duration time, the opening of the flow regulating valve is controlled to be increased. The invention can reduce the temperature rise rate of the conductive bar when the load is large and improve the power transmission and distribution capacity of the conductive bar.
Description
Technical Field
The invention relates to the technical field of electric power safety, in particular to a conductive bar cooling system, a control method and device thereof and electronic equipment.
Background
The large-size buses such as the conducting bars are widely applied to various large-current industrial scenes and large-scale power transmission equipment. In the use process of the conductive bar, as the load increases, the resistance of the conductive bar increases along with the increase of the load, and the corresponding heating value increases, so that the temperature rise of the conductive bar is too high, and the power transmission and distribution capacity of the conductive bar is limited.
At present, the heat dissipation of most of the conductive bars is mainly natural cooling and air cooling, and the heat regulating capability is limited. In order to ensure the power transmission and distribution capability of the conductive bar, the highest temperature rise under the rated power transmission and distribution capability needs to be selected, so that the conductive bar is generally selected to be larger, and the power transmission and distribution capability of the conductive bar is relatively lower.
Disclosure of Invention
The embodiment of the invention provides a conductive bar cooling system, a control method and a control device thereof and electronic equipment, which can reduce the temperature rise rate of a conductive bar when the load is large and improve the power transmission and distribution capacity of the conductive bar.
In a first aspect, an embodiment of the present invention provides a method for controlling a busbar cooling system, where the busbar cooling system includes a coolant pump, a cooler, a flow control valve, and a cooling pipeline, where the cooling pipeline is connected to a busbar, and coolant circulates in the busbar cooling system and the busbar to dissipate heat from the busbar; the control method comprises the following steps: acquiring the temperature of the conductive bars; if the temperature of the conductive bar is higher than the first set temperature, controlling the flow regulating valve to be opened, wherein the initial opening of the flow regulating valve is not the maximum opening when the flow regulating valve is opened; after the flow regulating valve is opened, if the duration time that the temperature of the conductive bar is greater than the first set temperature is longer than the first set duration time, the opening of the flow regulating valve is controlled to be increased.
On one hand, compared with natural cooling and air cooling, the control method for the conductive bar cooling system provided by the embodiment of the invention has the advantages that the secondary refrigerant circulates in the conductive bar to dissipate heat for the conductive bar, so that the heat dissipation speed of the conductive bar is higher, the heat dissipation capacity of the conductive bar is improved, the temperature rise rate of the conductive bar when the load is larger is reduced, and the power transmission and distribution capacity of the conductive bar is improved. On the other hand, when the temperature of the conducting bar is higher than the first set temperature, the flow regulating valve is controlled to be opened, the initial opening of the flow regulating valve is not the maximum opening when the flow regulating valve is opened, and when the duration time that the temperature of the conducting bar is higher than the first set temperature is longer than the first set duration time, the opening of the flow regulating valve is controlled to be increased, the flow velocity of the refrigerating medium in the conducting bar is improved, the heat dissipation capacity of a cooling system on the conducting bar is improved, the temperature rise rate of the conducting bar is reduced, and the power transmission and distribution capacity of the conducting bar is further improved.
In one possible implementation, after the opening degree of the control flow rate adjustment valve is increased, the method further includes: if the opening of the flow regulating valve is increased to the maximum opening and the duration time of the maximum opening is longer than the second set duration time, the cooling fan of the cooler is controlled to be started.
In one possible implementation, controlling the opening of the flow regulating valve to increase includes: calculating the temperature rise rate of the conductive bars; if the temperature rise rate of the conductive bar is smaller than or equal to the set temperature rise rate, controlling the opening of the flow regulating valve to increase at a first stepping speed; if the temperature rise rate of the conductive bar is larger than the set temperature rise rate, controlling the opening of the flow regulating valve to increase at a second stepping speed, wherein the first stepping speed is smaller than the second stepping speed.
In one possible implementation, after controlling the cooling fan of the cooler to be turned on, the method further includes: if the temperature of the conducting bar is smaller than a second set temperature, a cooling fan of the cooler is controlled to be turned off, wherein the second set temperature is smaller than the first set temperature; and after the cooling fan of the cooler is controlled to be closed, if the duration of the cooling fan in the closed state is longer than the third set duration, the flow regulating valve is controlled to be closed.
In one possible implementation, the control method further includes: and when the temperature of the conductive bar is not more than the first set temperature and not less than the second set temperature, controlling the opening degree of the flow regulating valve to be reduced.
In one possible implementation, the control method further includes: controlling the coolant pump to operate at a first frequency when the temperature is greater than a first set temperature; controlling the coolant pump to operate at a second frequency when the temperature is not greater than the first set temperature; the first frequency is greater than the second frequency.
In a second aspect, an embodiment of the present invention provides a control device for a busbar cooling system, where the busbar cooling system includes a coolant pump, a cooler, a flow control valve, and a cooling line, where the cooling line is connected to a busbar, and coolant circulates in the busbar cooling system and the busbar to dissipate heat from the busbar; the control device comprises: a communication module and a processing module; the communication module is used for acquiring the temperature of the conductive bars; the processing module is used for controlling the flow regulating valve to be opened if the temperature of the conductive bar is greater than the first set temperature, and the initial opening of the flow regulating valve is not the maximum opening when the flow regulating valve is opened; after the flow regulating valve is opened, if the duration time that the temperature of the conductive bar is greater than the first set temperature is longer than the first set duration time, the opening of the flow regulating valve is controlled to be increased.
In one possible implementation manner, the processing module is further configured to control the cooling fan of the cooler to be turned on if the opening of the flow rate adjustment valve is increased to the maximum opening and the duration of the maximum opening is longer than the second set duration.
In one possible implementation, the processing module is specifically configured to calculate a rate of temperature rise of the conductive bar; if the temperature rise rate of the conductive bar is smaller than or equal to the set temperature rise rate, controlling the opening of the flow regulating valve to increase at a first stepping speed; if the temperature rise rate of the conductive bar is larger than the set temperature rise rate, controlling the opening of the flow regulating valve to increase at a second stepping speed, wherein the first stepping speed is smaller than the second stepping speed.
In one possible implementation manner, the processing module is further configured to control the cooling fan of the cooler to be turned off if the temperature of the conductive strip is less than a second set temperature, where the second set temperature is less than the first set temperature; and after the cooling fan of the cooler is controlled to be closed, if the duration of the cooling fan in the closed state is longer than the third set duration, the flow regulating valve is controlled to be closed.
In one possible implementation manner, the processing module is further configured to control the opening of the flow regulating valve to decrease when the temperature of the conductive strip is not greater than the first set temperature and not less than the second set temperature.
In one possible implementation, the processing module is further configured to control the coolant pump to operate at a first frequency when the temperature is greater than a first set temperature; controlling the coolant pump to operate at a second frequency when the temperature is not greater than the first set temperature; the first frequency is greater than the second frequency.
In a third aspect, embodiments of the present invention provide an electrical conduction bar cooling system comprising a coolant pump, a cooler, a cooling circuit, a flow regulator valve, a temperature sensor, and a control device; the first end of the coolant pump is connected with the second end of the cooler through a cooling pipeline, the first end of the cooler is connected with the second end of the flow regulating valve through a cooling pipeline, the first end of the flow regulating valve is connected with the second end of the coolant pipeline in the electric conduction row through a cooling pipeline, and the first end of the coolant pipeline in the electric conduction row is connected with the second end of the coolant pump through a cooling pipeline; the temperature sensor is arranged on the conductive bar and used for detecting the temperature of the conductive bar; the control device is respectively connected with the temperature sensor, the flow regulating valve and the secondary refrigerant pump; a control device configured to acquire a temperature of the conductive bar; if the temperature of the conductive bar is higher than the first set temperature, controlling the flow regulating valve to be opened, wherein the initial opening of the flow regulating valve is not the maximum opening when the flow regulating valve is opened; after the flow regulating valve is opened, if the duration time that the temperature of the conductive bar is greater than the first set temperature is longer than the first set duration time, the opening of the flow regulating valve is controlled to be increased.
In a fourth aspect, an embodiment of the present invention provides an electronic device, including a memory storing a computer program and a processor for calling and running the computer program stored in the memory to perform the method according to the first aspect or any one of the possible implementations of the first aspect.
In a fifth aspect, embodiments of the present invention provide a computer readable storage medium storing a computer program which, when executed by a processor, implements the steps of the method as described above in the first aspect or any one of the possible implementations of the first aspect.
The technical effects caused by any implementation manner of the second aspect to the fifth aspect may be referred to as the technical effects caused by the first aspect or the corresponding implementation manner of the first aspect, and are not described herein.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a conductive strip cooling system according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a control method of a conductive bar cooling system according to an embodiment of the present invention;
FIG. 3 is a flow chart of another method for controlling a conductive strip cooling system according to an embodiment of the present invention;
FIG. 4 is a flow chart of another method for controlling a conductive strip cooling system according to an embodiment of the present invention;
FIG. 5 is a flow chart of another method for controlling a conductive strip cooling system according to an embodiment of the present invention;
FIG. 6 is a flow chart of another method for controlling a conductive strip cooling system according to an embodiment of the present invention;
FIG. 7 is a flow chart of another method for controlling a conductive strip cooling system according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a control device of a conductive strip cooling system according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the following description will be made by way of specific embodiments with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of a conductive strip cooling system according to an embodiment of the present invention. As shown in fig. 1, the conduction-bar cooling system includes a coolant pump 2, a cooler 3, cooling lines 5, a flow regulating valve 4, a temperature sensor 6, and a control device 7.
In the embodiment of the application, the first end of the coolant pump 2 is connected with the second end of the cooler 3 through the cooling pipeline 5, the first end of the cooler 3 is connected with the second end of the flow regulating valve 4 through the cooling pipeline 5, the first end of the flow regulating valve 4 is connected with the second end of the coolant pipeline in the electric conduction bar 1 through the cooling pipeline 5, and the first end of the coolant pipeline 5 in the electric conduction bar 1 is connected with the second end of the coolant pump 2 through the cooling pipeline 5.
In some embodiments, a temperature sensor 6 may be provided to the conductor bar 1 for detecting the temperature of the conductor bar.
For example, the number of the conductive bars 1 may be plural, and the temperature sensor 6 may be provided on the surface of each conductive bar for measuring the surface temperature of the conductive bar when it is operated. Alternatively, the temperature sensor 6 may be disposed in the coolant line inside each of the rows for measuring the coolant temperature inside the rows during operation.
In other embodiments, a temperature sensor 6 may also be provided in the cooling circuit 5 of each conductive drain for measuring the temperature of the coolant in the cooling circuit 5 of each conductive drain.
In other embodiments, the temperature sensor 6 can also be disposed on the cooling circuit 5 at the outlet of the cooler 3 for measuring the temperature of the coolant in the cooling circuit 5 at the outlet of the cooler 3. Alternatively, the temperature sensor 6 can be disposed on the cooling circuit 5 at the inlet of the cooler 3 for measuring the temperature of the coolant in the cooling circuit 5 at the inlet of the cooler 3.
In the embodiment of the application, the control device 7 is respectively connected with the temperature sensor 6, the flow regulating valve 4 and the secondary refrigerant pump 2.
In some embodiments, the control device 7 is configured to control the flow control valve 4 and the coolant pump 2 to circulate coolant through the row cooling system and the row to dissipate heat from the row 1 based on measurements from the temperature sensor 6.
In some embodiments, the conductor bar cooling system further comprises a manual adjustment valve 7. For example, a manual adjustment valve 7 may be provided on the cooling line of each conductive discharge port. Or a manual regulating valve 7 may also be provided on the cooling line of each conductor bar inlet.
In some embodiments, the coolant pump 2 in the conductor bar cooling system may be a fixed frequency pump, or may also be a variable frequency pump. The application is not limited.
In some embodiments, a flow control valve 4 in the row cooling system is disposed on the inlet cooling line of each row for controlling the flow of coolant.
It can be understood that the flow regulating valve 4 is arranged on the inlet cooling pipeline of each conducting bar, so that when the conducting bar fails, the secondary refrigerant is prevented from continuously flowing into the conducting bar, and the influence of the secondary refrigerant on the conducting bar is effectively reduced.
In the embodiment of the application, the secondary refrigerant is a high-temperature insulating secondary refrigerant. At the working temperature of the conducting bar, the secondary refrigerant is in an insulating state, so that electric shock accidents and electric leakage accidents are avoided.
In some embodiments, an insulating rubber tube is arranged between the flow regulating valve 4 and the conductive bar 1, so that the conductive bar 1 is insulated from a conductive bar cooling system, and the occurrence probability of electric shock accidents and electric leakage accidents is reduced.
Referring to fig. 2, a schematic flow chart of a control method of the conductive strip cooling system according to an embodiment of the present invention is shown. The control method of the conductive bar cooling system comprises steps S201-S204.
S201, acquiring the temperature of the conductive bar.
As a possible implementation, the control device may determine the temperature of each of the plurality of conductive rows directly as the real-time temperature of the conductive row.
As a possible implementation, the control device may calculate a maximum value, or a minimum value, of the real-time temperatures of the plurality of conductor bars; the maximum value, or minimum value, is determined as the temperature of the conductor bars.
And S202, if the temperature of the conductive bar is higher than the first set temperature, controlling the flow regulating valve to be opened, wherein the initial opening of the flow regulating valve is not the maximum opening when the flow regulating valve is opened.
It should be noted that, the temperature of the conductive bar is greater than the first set temperature, which indicates that the load of the conductive bar is greater, the temperature rise is higher, and heat dissipation is needed.
In some embodiments, the control device can control the flow regulating valve to be on and the coolant pump to be on to circulate coolant in the cooling system and the row to dissipate heat from the row.
For example, when controlling the opening of the flow rate adjustment valve, the control means may control the initial opening of the flow rate adjustment valve not to be the maximum opening. For example, the start opening degree of the flow rate adjustment valve may be the minimum opening degree, or the flow rate adjustment valve may be any opening degree between the minimum opening degree and the maximum opening degree.
And S203, after the flow regulating valve is opened, if the duration time that the temperature of the conductive bar is greater than the first set temperature is longer than the first set duration time, controlling the opening of the flow regulating valve to be increased.
It should be noted that, the duration is longer than the first set duration, which indicates that the duration of the conductive bar with a larger load is longer, and the time that the conductive bar is in a high temperature rise state is longer, so that the heat dissipation speed of the conductive bar needs to be improved.
In some embodiments, if the duration of the temperature of the conductive strip being greater than the first set temperature is greater than the first set duration, the control device may increase the opening of the flow control valve to increase the flow rate of the coolant in the cooling system and the conductive strip, and increase the heat dissipation rate of the conductive strip.
On one hand, compared with natural cooling and air cooling, the control method for the conductive bar cooling system provided by the embodiment of the invention has the advantages that the secondary refrigerant circulates in the conductive bar to dissipate heat for the conductive bar, so that the heat dissipation speed of the conductive bar is higher, the heat dissipation capacity of the conductive bar is improved, the temperature rise rate of the conductive bar when the load is larger is reduced, and the power transmission and distribution capacity of the conductive bar is improved. On the other hand, when the temperature of the conducting bar is higher than the first set temperature, the flow regulating valve is controlled to be opened, the initial opening of the flow regulating valve is not the maximum opening when the flow regulating valve is opened, and when the duration time that the temperature of the conducting bar is higher than the first set temperature is longer than the first set duration time, the opening of the flow regulating valve is controlled to be increased, the flow velocity of the refrigerating medium in the conducting bar is improved, the heat dissipation capacity of a cooling system on the conducting bar is improved, the temperature rise rate of the conducting bar is reduced, and the power transmission and distribution capacity of the conducting bar is further improved.
Alternatively, as shown in FIG. 3, step S203 may be embodied as steps S2031-S2033.
S2031, calculating the temperature rise rate of the conductive bars.
As a possible implementation manner, the control device may calculate the rate of temperature rise of the conductive bar based on the temperature of the start time and the temperature of the end time within the first set period of time, and the first set period of time.
As another possible implementation manner, the control device may calculate the rate of temperature rise of the conductive bar based on the temperature at the first time and the temperature at the second time within the first set period of time, and the period of time between the first time and the second time.
And S2032, if the temperature rise rate of the conductive bar is smaller than or equal to the set temperature rise rate, controlling the opening of the flow regulating valve to increase at a first stepping speed.
And S2033, if the temperature rise rate of the conductive bar is larger than the set temperature rise rate, controlling the opening of the flow regulating valve to increase at a second stepping speed.
Wherein the first step speed is less than the second step speed.
It can be understood that if the rate of temperature rise of the conductive bar is less than or equal to the set rate of temperature rise, the conductive bar is relatively slow in temperature rise, and the opening of the flow regulating valve can be increased at a small stepping speed. The rate of temperature rise of the conductive bar is larger than the set rate of temperature rise, which means that the temperature rise of the conductive bar is relatively higher, and the opening of the flow regulating valve can be increased at a larger stepping speed.
Optionally, as shown in fig. 4, after step S203, the control method of the conductive strip cooling system further includes S301.
And S301, if the opening of the flow regulating valve is increased to the maximum opening and the duration time of the maximum opening is longer than the second set duration time, controlling a cooling fan of the cooler to be started.
It can be understood that the duration of the flow regulating valve at the maximum opening is longer than the second set duration, which indicates that when the coolant pump is turned on and the flow regulating valve is at the maximum opening, the heat dissipation requirement of the conductive bar cannot be met, and the heat dissipation speed of the conductive bar needs to be further improved.
In some embodiments, the control device may control the cooling fan of the cooler to be turned on to increase the heat released by the coolant at the cooler, thereby increasing the heat absorbed by the coolant at the conductive bars to further increase the heat dissipation rate of the conductive bars.
Optionally, as shown in fig. 5, after step S301, the control method of the conductive strip cooling system further includes steps S401 to S402.
S401, if the temperature of the conducting bar is smaller than the second set temperature, a cooling fan of the cooler is controlled to be turned off.
Wherein the second set temperature is less than the first set temperature.
It should be noted that, the temperature of the conductive bar is less than the second set temperature, which indicates that the temperature of the conductive bar is reduced to a safe level, the load is smaller, the temperature rise is smaller, and the cooling system can be closed adaptively, so as to realize energy saving.
In some embodiments, if the temperature of the conductive bar is less than the second set temperature, the control device may control the cooling fan of the cooler to be turned off so as to slow down the heat dissipation speed of the conductive bar, so as to achieve energy saving of the cooling system.
And S402, after the cooling fan of the cooler is controlled to be closed, if the duration of the closed state of the cooling fan is longer than the third set duration, the flow regulating valve is controlled to be closed.
It can be understood that, after the cooling fan of the control cooler is turned off, if the duration of the time that the cooling fan is in the off state is longer than the third set duration, it indicates that the conductive bar does not need the cooling system to dissipate heat, and the cooling system can be turned off.
In some embodiments, the control device may control the flow regulating valve to close to shut down the conductive drain cooling system.
Optionally, the control method of the busbar cooling system further includes step S501.
And S501, controlling the opening degree of the flow regulating valve to be reduced when the temperature of the conducting bar is not greater than the first set temperature and is not less than the second set temperature.
Therefore, the control device can reduce the opening of the flow regulating valve when the temperature of the conductive bar is stabilized between the second set temperature and the first set temperature, and the heat dissipation speed of the cold area system to the conductive bar is slowed down.
Optionally, as shown in fig. 6, the control method of the conductive strip cooling system further includes steps S601 to S602.
S601, controlling the coolant pump to operate at a first frequency when the temperature is greater than a first set temperature;
S602, controlling the coolant pump to operate at a second frequency when the temperature is not greater than the first set temperature.
Wherein the first frequency is greater than the second frequency.
In some embodiments, the coolant pump can be a variable frequency pump. The control device can control the frequency of the coolant pump to operate the coolant at different frequencies.
Therefore, when the temperature of the conducting bar is higher than the first set temperature, the temperature rise of the conducting bar is higher, and the control device can control the secondary refrigerant pump to operate at a higher first frequency, so that the heat dissipation speed of the conducting bar is relatively higher. When the temperature of the conducting bar is not higher than the first set temperature, the temperature rise of the conducting bar is lower, and the control device can control the secondary refrigerant pump to operate at a lower second frequency, so that the heat dissipation speed of the conducting bar is relatively lower. Therefore, the control device can control the frequency of the secondary refrigerant pump so as to realize the heat dissipation requirement of the conductive bars at different temperatures.
As shown in fig. 7, the embodiment of the invention further provides a control method of the conductive bar cooling system. The control method includes steps S700-S719.
S700, starting.
S701, acquiring the temperature Tp of the conductive bar.
In some embodiments, the control device can also obtain the working state of the coolant pump and the working state of the flow regulating valve.
S702, judging whether the temperature Tp of the conductive bar is larger than a first set temperature T1. If Tp > T1, then execute step S703; otherwise, step S711 is executed.
S703, judging whether the secondary refrigerant pump is started. If the coolant pump is in an off state, then step S704 is performed; if the coolant pump is in an on state, step S705 is performed.
S704, controlling the flow regulating valve to be opened and controlling the coolant pump to be opened.
S705, acquiring whether the temperature Tp of the conductive bar is greater than the duration of the first set temperature T1.
S706, judging whether the duration is longer than the first set duration. If yes, step S707 is executed.
And S707, acquiring the real-time opening of the flow regulating valve.
S708, judging whether the real-time opening degree is the maximum opening degree. If yes, go to step S709; otherwise, step S710 is performed.
S709, the opening degree of the flow rate control valve is controlled to be increased.
S710, controlling the cooling fan to be started.
As a possible implementation manner, when the opening of the flow regulating valve is increased to the maximum opening and the duration of the maximum opening is longer than the second set duration, the control device may control the cooling fan of the cooler to be turned on.
S711, judging whether the temperature Tp of the conductive bar is smaller than a second set temperature T2. If Tp < T2, then execute step S714; otherwise, step S712 is performed.
S712, judging whether the secondary refrigerant pump is started. If the coolant pump is in an on state, step S713 is performed.
S713, controlling the opening degree of the flow regulating valve to be reduced.
S714, judging whether a cooling fan is started, if so, executing step S715; otherwise, step S716 is performed.
S715, controlling the cooling fan to be turned off.
S716, acquiring the duration time when the cooling fan is in the off state.
S717, judging whether the duration is longer than a third set duration. If yes, go to step S718.
S718, judging whether the secondary refrigerant pump is started. If the coolant pump is in an on state, step S719 is performed.
S719, controlling the flow regulating valve and the coolant pump to be turned off.
Based on the embodiment shown in fig. 7, the invention can control the conductive bar cooling system based on the temperature of the conductive bar and the working states of the coolant pump and the flow regulating valve, thereby realizing the control of the temperature of the conductive bar, ensuring the temperature of the conductive bar to be in a safe range, reducing the temperature rise rate of the conductive bar when the load is larger, and improving the power transmission and distribution capability of the conductive bar.
It should be understood that the sequence number of each step in the foregoing embodiment does not mean that the execution sequence of each process should be determined by the function and the internal logic, and should not limit the implementation process of the embodiment of the present invention.
The following are device embodiments of the invention, for details not described in detail therein, reference may be made to the corresponding method embodiments described above.
Fig. 8 is a schematic structural diagram of a control device of a conductive strip cooling system according to an embodiment of the present invention, and for convenience of explanation, only the portions relevant to the embodiment of the present invention are shown, which is described in detail below:
As shown in fig. 4, the control device 800 of the busbar cooling system includes: a communication module 801 and a processing module 802. The electric conduction bar cooling system comprises a refrigerating medium pump, a cooler, a flow regulating valve and a cooling pipeline, wherein the cooling pipeline is connected with the electric conduction bar, and refrigerating medium circulates in the electric conduction bar cooling system and the electric conduction bar to dissipate heat of the electric conduction bar.
And the communication module 801 is used for acquiring the temperature of the conductive bars.
The processing module 802 is configured to control the flow control valve to open if the temperature of the conductive strip is greater than the first set temperature, where the initial opening of the flow control valve is not the maximum opening; after the flow regulating valve is opened, if the duration time that the temperature of the conductive bar is greater than the first set temperature is longer than the first set duration time, the opening of the flow regulating valve is controlled to be increased.
In one possible implementation, the processing module 802 is further configured to control the cooling fan of the cooler to be turned on if the opening of the flow rate adjustment valve is increased to the maximum opening and the duration of the maximum opening is longer than the second set duration.
In one possible implementation, the processing module 802 is specifically configured to calculate a rate of temperature rise of the conductive strip; if the temperature rise rate of the conductive bar is smaller than or equal to the set temperature rise rate, controlling the opening of the flow regulating valve to increase at a first stepping speed; if the temperature rise rate of the conductive bar is larger than the set temperature rise rate, controlling the opening of the flow regulating valve to increase at a second stepping speed, wherein the first stepping speed is smaller than the second stepping speed.
In a possible implementation manner, the processing module 802 is further configured to control the cooling fan of the cooler to be turned off if the temperature of the conductive strip is less than a second set temperature, where the second set temperature is less than the first set temperature; and after the cooling fan of the cooler is controlled to be closed, if the duration of the cooling fan in the closed state is longer than the third set duration, the flow regulating valve is controlled to be closed.
In a possible implementation manner, the processing module 802 is further configured to control the opening of the flow regulating valve to decrease when the temperature of the conductive strip is not greater than the first set temperature and not less than the second set temperature.
In one possible implementation, the process module 802 is further configured to control the coolant pump to operate at a first frequency when the temperature is greater than a first set temperature; controlling the coolant pump to operate at a second frequency when the temperature is not greater than the first set temperature; the first frequency is greater than the second frequency.
Fig. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present invention. As shown in fig. 9, the electronic device 900 of this embodiment includes: a processor 901, a memory 902 and a computer program 903 stored in the memory 902 and executable on the processor 901. The processor 901, when executing the computer program 903, implements the steps of the above embodiments, such as steps 201 to 203 shown in fig. 2. Or the processor 901 may perform the functions of the modules/units in the above-described device embodiments when executing the computer program 903, for example, the communication module 801 and the processing module 802 shown in fig. 8.
Illustratively, the computer program 903 may be partitioned into one or more modules/units that are stored in the memory 902 and executed by the processor 901 to accomplish the present invention. The one or more modules/units may be a series of computer program instruction segments capable of performing the specified functions, which instruction segments are used to describe the execution of the computer program 903 in the electronic device 900. For example, the computer program 903 may be divided into a communication module 801 and a processing module 802 as shown in fig. 8.
The electronic device 900 may be a computing device such as a desktop computer, a notebook computer, a palm computer, a cloud server, etc. The electronic device 900 may include, but is not limited to, a processor 901, a memory 902. It will be appreciated by those skilled in the art that fig. 9 is merely an example of an electronic device 900 and is not intended to limit the electronic device 900, and may include more or fewer components than shown, or may combine certain components, or different components, e.g., the terminal may further include an input-output device, a network access device, a bus, etc.
The Processor 901 may be a central processing unit (Central Processing Unit, CPU), other general purpose Processor, digital signal Processor (DIGITAL SIGNAL Processor, DSP), application SPECIFIC INTEGRATED Circuit (ASIC), field-Programmable gate array (Field-Programmable GATE ARRAY, FPGA) or other Programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 902 may be an internal storage unit of the electronic device 900, such as a hard disk or a memory of the electronic device 900. The memory 902 may also be an external storage device of the electronic device 900, such as a plug-in hard disk, a smart memory card (SMART MEDIA CARD, SMC), a Secure Digital (SD) card, a flash memory card (FLASH CARD) or the like, which are provided on the electronic device 900. Further, the memory 902 may also include both internal storage units and external storage devices of the electronic device 900. The memory 902 is used for storing the computer program and other programs and data required by the terminal. The memory 902 may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions. The functional units and modules in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit. In addition, the specific names of the functional units and modules are only for distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working process of the units and modules in the above system may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/terminal and method may be implemented in other manners. For example, the apparatus/terminal embodiments described above are merely illustrative, e.g., the division of the modules or units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection via interfaces, devices or units, which may be in electrical, mechanical or other forms.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated modules/units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on this understanding, the present invention may implement all or part of the flow of the method of the above embodiment, or may be implemented by a computer program to instruct related hardware, where the computer program may be stored in a computer readable storage medium, and when the computer program is executed by a processor, the computer program may implement the steps of the above embodiment. Wherein the computer program comprises computer program code which may be in source code form, object code form, executable file or some intermediate form etc. The computer readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth. It should be noted that the computer readable medium may include content that is subject to appropriate increases and decreases as required by jurisdictions in which such content is subject to legislation and patent practice, such as in certain jurisdictions in which such content is not included as electrical carrier signals and telecommunication signals.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention.
Claims (7)
1. The control method of the conducting bar cooling system is characterized in that the conducting bar cooling system comprises a refrigerating medium pump, a cooler, a flow regulating valve and a cooling pipeline, wherein the cooling pipeline is connected with the conducting bar, and refrigerating medium circulates in the conducting bar cooling system and the conducting bar to radiate heat for the conducting bar; the control method comprises the following steps:
acquiring the temperature of the conductive bars;
If the temperature of the conductive bar is higher than the first set temperature, controlling the flow regulating valve to be opened, wherein the initial opening of the flow regulating valve is not the maximum opening when the flow regulating valve is opened;
after the flow regulating valve is opened, if the duration time that the temperature of the conductive bar is greater than the first set temperature is longer than the first set duration time, controlling the opening of the flow regulating valve to be increased;
The opening degree increase of the control flow rate regulating valve includes: calculating the temperature rise rate of the conductive bars; if the temperature rise rate of the conductive bar is smaller than or equal to the set temperature rise rate, controlling the opening of the flow regulating valve to increase at a first stepping speed; if the temperature rise rate of the conductive bar is larger than the set temperature rise rate, controlling the opening of the flow regulating valve to increase at a second stepping speed, wherein the first stepping speed is smaller than the second stepping speed;
The flow rate control valve further includes, after the opening degree is controlled to increase: if the opening of the flow regulating valve is increased to the maximum opening and the duration time of the maximum opening is longer than the second set duration time, the cooling fan of the cooler is controlled to be started;
the method further comprises the following steps after the cooling fan of the control cooler is started: if the temperature of the conducting bar is smaller than a second set temperature, a cooling fan of the cooler is controlled to be turned off, wherein the second set temperature is smaller than the first set temperature; and after the cooling fan of the cooler is controlled to be closed, if the duration of the cooling fan in the closed state is longer than the third set duration, the flow regulating valve is controlled to be closed.
2. The control method of a busbar cooling system according to claim 1, characterized in that the control method further comprises:
and controlling the opening degree of the flow regulating valve to be reduced when the temperature of the conducting bar is not more than the first set temperature and not less than the second set temperature.
3. The control method of a busbar cooling system according to claim 1 or 2, characterized in that the control method further comprises:
Controlling the coolant pump to operate at a first frequency when the temperature is greater than the first set temperature;
Controlling the coolant pump to operate at a second frequency when the temperature is not greater than the first set temperature; the first frequency is greater than the second frequency.
4. The control device of the conducting bar cooling system is characterized in that the conducting bar cooling system comprises a refrigerating medium pump, a cooler, a flow regulating valve and a cooling pipeline, wherein the cooling pipeline is connected with the conducting bar, and refrigerating medium circulates in the conducting bar cooling system and the conducting bar to radiate heat for the conducting bar; the control device includes: a communication module and a processing module;
the communication module is used for acquiring the temperature of the conductive bars;
the processing module is used for controlling the flow regulating valve to be opened if the temperature of the conductive bar is greater than a first set temperature, and the initial opening of the flow regulating valve is not the maximum opening when the flow regulating valve is opened; after the flow regulating valve is opened, if the duration time that the temperature of the conductive bar is greater than the first set temperature is longer than the first set duration time, controlling the opening of the flow regulating valve to be increased;
The processing module is specifically used for calculating the temperature rise rate of the conductive bars; if the temperature rise rate of the conductive bar is smaller than or equal to the set temperature rise rate, controlling the opening of the flow regulating valve to increase at a first stepping speed; if the temperature rise rate of the conductive bar is larger than the set temperature rise rate, controlling the opening of the flow regulating valve to increase at a second stepping speed, wherein the first stepping speed is smaller than the second stepping speed;
The processing module is further used for controlling a cooling fan of the cooler to be started if the opening of the flow regulating valve is increased to the maximum opening and the duration time of the maximum opening is longer than the second set duration time;
The processing module is further configured to control a cooling fan of the cooler to be turned off if the temperature of the conductive bar is less than a second set temperature, where the second set temperature is less than the first set temperature;
and the processing module is also used for controlling the flow regulating valve to be closed if the duration time of the cooling fan in the closed state is longer than the third set duration time.
5. The electric conduction bar cooling system is characterized by comprising a refrigerating agent pump, a cooler, a cooling pipeline, a flow regulating valve, a temperature sensor and a control device;
The first end of the coolant pump is connected with the second end of the cooler through a cooling pipeline, the first end of the cooler is connected with the second end of the flow regulating valve through a cooling pipeline, the first end of the flow regulating valve is connected with the second end of the coolant pipeline in the conducting bar through a cooling pipeline, and the first end of the coolant pipeline in the conducting bar is connected with the second end of the coolant pump through a cooling pipeline;
the temperature sensor is arranged on the conductive bar and used for detecting the temperature of the conductive bar;
The control device is respectively connected with the temperature sensor, the flow regulating valve and the secondary refrigerant pump;
The control device is configured to acquire the temperature of the conductive bar; if the temperature of the conductive bar is higher than the first set temperature, controlling the flow regulating valve to be opened, wherein the initial opening of the flow regulating valve is not the maximum opening when the flow regulating valve is opened; after the flow regulating valve is opened, if the duration time that the temperature of the conductive bar is greater than the first set temperature is longer than the first set duration time, controlling the opening of the flow regulating valve to be increased;
the controlling the opening degree increase of the flow rate regulating valve includes: calculating the temperature rise rate of the conductive bars; if the temperature rise rate of the conductive bar is smaller than or equal to the set temperature rise rate, controlling the opening of the flow regulating valve to increase at a first stepping speed; if the temperature rise rate of the conductive bar is larger than the set temperature rise rate, controlling the opening of the flow regulating valve to increase at a second stepping speed, wherein the first stepping speed is smaller than the second stepping speed;
The control device is configured to control the cooling fan of the cooler to be started if the opening of the flow regulating valve is increased to the maximum opening and the duration time of the maximum opening is longer than the second set duration time; if the temperature of the conducting bar is smaller than a second set temperature, a cooling fan of the cooler is controlled to be turned off, wherein the second set temperature is smaller than the first set temperature; and if the duration time of the cooling fan in the closed state is longer than the third set duration time, controlling the flow regulating valve to be closed.
6. An electronic device comprising a memory storing a computer program and a processor for invoking and running the computer program stored in the memory to perform the method of any of claims 1 to 3.
7. A computer readable storage medium storing a computer program, characterized in that the computer program when executed by a processor implements the steps of the method according to any of the preceding claims 1 to 3.
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| CN103095098A (en) * | 2011-10-27 | 2013-05-08 | 珠海格力电器股份有限公司 | Frequency converter heat-dissipation cooling system and controlling method and device thereof |
| CN104735954A (en) * | 2013-12-20 | 2015-06-24 | 珠海格力电器股份有限公司 | Liquid-cooled cooler control method, cooling device and air conditioner system |
| CN112382804A (en) * | 2020-11-12 | 2021-02-19 | 重庆水利电力职业技术学院 | Power battery cooling structure and power battery thermal management system |
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