CN114242489A - Distributed modulation type forced air cooling method of solid-state direct-current circuit breaker - Google Patents
Distributed modulation type forced air cooling method of solid-state direct-current circuit breaker Download PDFInfo
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- CN114242489A CN114242489A CN202111291345.3A CN202111291345A CN114242489A CN 114242489 A CN114242489 A CN 114242489A CN 202111291345 A CN202111291345 A CN 202111291345A CN 114242489 A CN114242489 A CN 114242489A
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- solid
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- forced air
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/52—Cooling of switch parts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/52—Cooling of switch parts
- H01H2009/523—Cooling of switch parts by using heat pipes
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- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention provides a distribution modulation type forced air cooling method of a solid-state direct current breaker, which comprises the following steps: detecting the current of the solid-state direct current breaker or the temperature of the tube shell; and controlling the rotating speed of the fan according to the detection result so as to adjust the heat dissipation strength. The distributed modulation type forced air cooling method not only ensures the reliable heat dissipation of the solid-state direct current breaker, but also can ensure that the fan keeps low rotating speed under low current, thereby improving the reliability of the fan; the distributed fans are arranged, the working mode of a single fan in the prior art is changed into a model in which a plurality of fans work together, the problem that the system has to be shut down after one fan in the prior art breaks down is solved, and the working reliability of the system is improved; and the volume of the solid-state direct current breaker is reduced by adopting a forced air cooling heat dissipation mode of the gravity heat pipe.
Description
Technical Field
The invention belongs to the field of circuit breaker cooling, and particularly relates to a distributed modulation type forced air cooling method of a solid-state direct-current circuit breaker.
Background
The main current branch of the electronic device, such as a solid-state direct current breaker, is formed by a controllable power electronic switch, the fault current is quick to cut off, and the cut-off can be completed within hundreds of microseconds, so that the development of short-circuit faults can be effectively inhibited, and the safety of a direct current system is ensured. Therefore, electronic devices represented by solid-state dc breakers can be widely used in systems such as medium and low voltage dc systems. However, the solid-state dc circuit breaker generates heat due to long-time through-flow, so that the solid-state dc circuit breaker needs to be additionally provided with a heat dissipation system to ensure reliable operation of devices.
At present, the cooling method of the heat dissipation system that is commonly used is water cooling, because the heat dissipation capability is strong, but the water cooling makes the structure of the electronic device such as a solid-state dc circuit breaker more complicated, and the volume of the electronic device is greatly increased. Although the conventional forced air cooling method has a simple structure, the heat dissipation performance of the conventional forced air cooling method cannot meet the requirements of electronic devices such as solid-state dc circuit breakers. Moreover, the air cooling mode of the existing electronic device is single-fan air cooling, when a fan fault occurs, the existing working mode of single fan heat dissipation needs to stop the system for maintenance, and the system can work again only after the fan is maintained.
Disclosure of Invention
In order to solve the above problems, the present invention provides a distributed modulation type forced air cooling method for a solid-state dc circuit breaker.
The invention discloses a distribution modulation type forced air cooling method of a solid-state direct current breaker, which comprises the following steps:
detecting the current of the solid-state direct current breaker or the temperature of a tube shell;
and controlling the rotating speed of the fan according to the detection result so as to adjust the heat dissipation strength.
Further, in the present invention,
and regulating the speed of the fan in a grading manner.
Further, in the present invention,
the fan is a variable speed modulation fan.
Further, in the present invention,
and the rotating speed of the variable-speed modulation type fan is fed back and regulated through the current or the temperature of the pipe shell.
Further, in the present invention,
and when the current feeds back the full operation of the solid-state direct-current circuit breaker or the temperature of the pipe shell is higher than a first expected temperature value, controlling the rotating speed of the variable-speed modulation type fan to be the highest rotating speed.
Further, in the present invention,
and when the detected result feeds back that the bus current of the solid-state direct current breaker is lower than a rated value, controlling to reduce the rotating speed of the variable speed modulation type fan, so that the rotating speed of the variable speed modulation type fan meets the heat dissipation requirement of the current state or the temperature of the tube shell is lower than a second expected temperature value.
Further, in the present invention,
more than one variable speed modulation type fan is arranged.
Further, in the present invention,
the variable speed modulation type fan adopts distributed arrangement.
Further, in the present invention,
and adopting a heat pipe radiator, and pressing the heat pipe radiator and the solid-state direct current breaker in a pressing mode.
Further, in the present invention,
the heat pipe radiator adopts a gravity heat pipe.
The distributed modulation type forced air cooling method of the solid-state direct current breaker adjusts the heat dissipation strength by controlling the rotating speed of the fan according to the detection result of the current or the temperature of the solid-state direct current breaker, thereby forming closed-loop control and ensuring the reliable heat dissipation of the solid-state direct current breaker.
The distributed modulation type forced air cooling method of the solid-state direct current breaker can also ensure that the fan keeps low rotating speed under low current, thereby improving the reliability of the fan; the distributed fan arrangement is adopted, the working mode of a single fan B in the prior art is changed into a model in which a plurality of fans B work together, the problem that the system has to be shut down after one fan B in the prior art breaks down is avoided, and therefore the working reliability of the system is improved; and the volume of the solid-state direct current breaker is reduced by adopting a forced air cooling heat dissipation mode of the gravity heat pipe.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram illustrating an implementation manner of a distributed modulation type forced air cooling method of a solid-state dc circuit breaker according to an embodiment of the present invention;
figure 2 shows a schematic diagram of the distributed arrangement of fans B in the distributed modulation forced air cooling method of the solid-state dc circuit breaker according to the embodiment of the present invention,
A. a detection and control device; B. a fan; C. a valve string and a radiator.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic diagram illustrating an implementation manner of a distributed modulation type forced air cooling method of a solid-state dc circuit breaker according to the present invention. In the distributed modulation type forced air cooling method, a heat pipe radiator is in pressure joint with a solid-state direct current breaker, so that heat in a device such as the solid-state direct current breaker is conducted to fins of a heat pipe. And the fan B is used for driving air to flow, and the heat on the fins is brought to the environment, so that the heat dissipation of the solid-state direct-current circuit breaker is realized.
In the distributed modulation type forced air cooling method of the solid-state direct current breaker, the used fan B is subjected to step speed regulation. As shown in fig. 1, in order to ensure the long-term reliable operation of the fan B, the distributed modulation type forced air cooling method of the solid-state dc circuit breaker of the present invention employs a variable speed modulation type fan B.
The distribution modulation type forced air cooling method of the solid-state direct current breaker detects the current in the solid-state direct current breaker or the temperature of a tube shell through the detection and control device A. The detection and control device A also adjusts the rotating speed of the variable-speed modulation type fan B by detecting the temperature of the current or the pipe shell fed back, and when the full-scale work of the solid-state direct-current circuit breaker is determined by the detected current in the solid-state direct-current circuit breaker or the temperature of the pipe shell is higher than a first expected temperature value, the variable-speed modulation type fan B is controlled to enable the rotating speed to reach the highest value, so that the heat dissipation capacity of the variable-speed modulation type fan B is the strongest; when the bus current of the power electronic device is lower than a rated value, a detection signal is fed back to the detection and control device A of the variable speed modulation type fan B, and the detection and control device A controls and reduces the rotating speed of the variable speed modulation type fan B, so that the rotating speed of the variable speed modulation type fan B only needs to meet the heat dissipation of the current state, the temperature of the pipe shell is lower than a second expected temperature value at the moment, and the first expected temperature value and the second expected temperature value are determined by specific working conditions. Therefore, the time of the fan B working at the full rotating speed can be reduced as much as possible, the fault rate of the fan B is reduced, and the reliability of the solid-state direct-current circuit breaker is improved.
The distributed modulation type forced air cooling method adopts two or more fans B, and the two or more fans B are distributed or arranged, so that a single fan B in the original space is replaced by two or more fans B. Fig. 2 is a schematic diagram showing the distributed arrangement of fans B in the distributed modulation type forced air cooling method of the solid-state dc circuit breaker according to the present invention, and in fig. 2, a single fan B adopted in the prior art is replaced with four fans B, and the four fans B are distributed in two rows and two columns. The two or more fans B are distributed or arranged, so that the problem that the system has to be shut down when one fan B has a problem is solved on the premise of ensuring that the total heat dissipation capacity is unchanged.
In the distributed modulation type forced air cooling method, the gravity heat pipe is adopted in the heat pipe radiator, so that the volume of an electronic device such as a solid-state direct current circuit breaker is reduced.
In conclusion, the distributed modulation type forced air cooling method controls the rotating speed of the fan B through the detection result of the current or the temperature in the electronic device such as the solid-state direct current breaker to adjust the heat dissipation intensity, thereby forming closed-loop control, ensuring the reliable heat dissipation of the solid-state direct current breaker, keeping the low rotating speed of the fan B under the low current and improving the reliability of the fan B; the distributed fans B are arranged, the existing working mode of a single fan B is changed into a model in which a plurality of fans B work together, and the problem that the system has to be shut down after one fan B in the prior art breaks down is solved, so that the working reliability of the system is improved; and the volume of the solid-state direct current breaker is reduced by adopting a forced air cooling heat dissipation mode of the gravity heat pipe.
Although the present 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 solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A distributed modulation type forced air cooling method of a solid-state direct current breaker is characterized by comprising the following steps:
detecting the current of the solid-state direct current breaker or the temperature of a tube shell;
and controlling the rotating speed of the fan according to the detection result so as to adjust the heat dissipation strength.
2. The distributed modulation forced air cooling method of a solid-state DC circuit breaker according to claim 1,
and regulating the speed of the fan in a grading manner.
3. The distributed modulation forced air cooling method of a solid-state DC circuit breaker according to claim 2,
the fan is a variable speed modulation fan.
4. The distributed modulation forced air cooling method of a solid-state DC circuit breaker according to claim 3,
and the rotating speed of the variable-speed modulation type fan is fed back and regulated through the current or the temperature of the pipe shell.
5. The distributed modulation forced air cooling method of a solid-state DC circuit breaker according to claim 4,
and when the current feeds back the full operation of the solid-state direct-current circuit breaker or the temperature of the pipe shell is higher than a first expected temperature value, controlling the rotating speed of the variable-speed modulation type fan to be the highest rotating speed.
6. The distributed modulation forced air cooling method of a solid-state DC circuit breaker according to claim 4 or 5,
and when the detected result feeds back that the bus current of the solid-state direct current breaker is lower than a rated value, controlling to reduce the rotating speed of the variable speed modulation type fan, so that the rotating speed of the variable speed modulation type fan meets the heat dissipation requirement of the current state or the temperature of the tube shell is lower than a second expected temperature value.
7. The distributed modulation forced air cooling method of a solid-state DC circuit breaker according to claim 6,
more than one variable speed modulation type fan is arranged.
8. The distributed modulation forced air cooling method of a solid-state DC circuit breaker according to claim 7,
the variable speed modulation type fan adopts distributed arrangement.
9. The distributed modulation forced air cooling method of a solid-state DC circuit breaker according to claim 8,
and adopting a heat pipe radiator, and pressing the heat pipe radiator and the solid-state direct current breaker in a pressing mode.
10. The distributed modulation forced air cooling method of a solid-state DC circuit breaker according to claim 9,
the heat pipe radiator adopts a gravity heat pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111291345.3A CN114242489A (en) | 2021-11-01 | 2021-11-01 | Distributed modulation type forced air cooling method of solid-state direct-current circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111291345.3A CN114242489A (en) | 2021-11-01 | 2021-11-01 | Distributed modulation type forced air cooling method of solid-state direct-current circuit breaker |
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| CN114242489A true CN114242489A (en) | 2022-03-25 |
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| CN202111291345.3A Pending CN114242489A (en) | 2021-11-01 | 2021-11-01 | Distributed modulation type forced air cooling method of solid-state direct-current circuit breaker |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203223407U (en) * | 2013-05-16 | 2013-10-02 | 沈阳高压成套开关股份有限公司 | Air cooling controller of switch cabinet |
| CN203445030U (en) * | 2013-09-18 | 2014-02-19 | 德力西电气有限公司 | Intelligent frame circuit breaker with air-cooled apparatus |
| CN103728998A (en) * | 2013-12-30 | 2014-04-16 | 长沙奥托自动化技术有限公司 | Intelligent adjustment type heat dissipation method and system for high-voltage frequency converter |
| CN104950946A (en) * | 2014-07-29 | 2015-09-30 | 希望森兰科技股份有限公司 | Heat radiation control system of high-voltage frequency converter |
| CN106523412A (en) * | 2015-09-11 | 2017-03-22 | 上海电科电器科技有限公司 | Fan monitoring method and device for frame circuit breaker |
| CN113053682A (en) * | 2021-03-09 | 2021-06-29 | 北京北元电器有限公司 | Air-cooled air pipe, ventilation housing and multipoint cooling device for circuit breaker |
-
2021
- 2021-11-01 CN CN202111291345.3A patent/CN114242489A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203223407U (en) * | 2013-05-16 | 2013-10-02 | 沈阳高压成套开关股份有限公司 | Air cooling controller of switch cabinet |
| CN203445030U (en) * | 2013-09-18 | 2014-02-19 | 德力西电气有限公司 | Intelligent frame circuit breaker with air-cooled apparatus |
| CN103728998A (en) * | 2013-12-30 | 2014-04-16 | 长沙奥托自动化技术有限公司 | Intelligent adjustment type heat dissipation method and system for high-voltage frequency converter |
| CN104950946A (en) * | 2014-07-29 | 2015-09-30 | 希望森兰科技股份有限公司 | Heat radiation control system of high-voltage frequency converter |
| CN106523412A (en) * | 2015-09-11 | 2017-03-22 | 上海电科电器科技有限公司 | Fan monitoring method and device for frame circuit breaker |
| CN113053682A (en) * | 2021-03-09 | 2021-06-29 | 北京北元电器有限公司 | Air-cooled air pipe, ventilation housing and multipoint cooling device for circuit breaker |
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