CN113380501A - Transformer temperature control system and control method thereof - Google Patents
Transformer temperature control system and control method thereof Download PDFInfo
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- CN113380501A CN113380501A CN202110618123.1A CN202110618123A CN113380501A CN 113380501 A CN113380501 A CN 113380501A CN 202110618123 A CN202110618123 A CN 202110618123A CN 113380501 A CN113380501 A CN 113380501A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
- H01F2027/406—Temperature sensor or protection
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Protection Of Transformers (AREA)
- Housings And Mounting Of Transformers (AREA)
- Transformer Cooling (AREA)
Abstract
The invention discloses a transformer temperature control system and a control method thereof, comprising a plurality of transformer bodies, a cooling device, a filtering device and a control system, wherein each transformer body is provided with a temperature detection sensor, an oil inlet end and an oil outlet end, wherein the temperature detection sensor is used for detecting the temperature of transformer oil in the transformer body, the oil outlet end is connected with the cooling device through a pipeline, the oil inlet end is connected with the filtering device through a pipeline, the pipelines of the oil inlet end and the oil outlet end are both provided with electromagnetic proportional valves, the cooling device is connected with the filtering device through a pipeline, the pipeline is provided with an oil pump, a temperature detection sensor and a pressure sensor, which are used for driving the transformer oil to flow in the pipeline and monitoring the temperature of the transformer oil in a plurality of transformers, and the transformer oil in the transformer is sequentially cooled to the temperature required by the transformer.
Description
Technical Field
The invention belongs to the technical field of electric power, and relates to a transformer temperature control system and a control method thereof.
Background
A transformer is a device that changes an alternating voltage using the principle of electromagnetic induction, and main components are a primary coil, a secondary coil, and an iron core (magnetic core). The main functions are voltage transformation, current transformation, impedance transformation, isolation, voltage stabilization (magnetic saturation transformer) and the like. The transformer can be divided into a power transformer and a special transformer (an electric furnace transformer, a rectification transformer, a power frequency test transformer, a voltage regulator, a mining transformer, an audio transformer, a medium-frequency transformer, a high-frequency transformer, an impact transformer, an instrument transformer, an electronic transformer, a reactor, a mutual inductor and the like) according to the application.
Because the transformer during operation can produce higher temperature, the inside transformer oil that all uses of present most transformers cools off, but at long-time during operation, the inside transformer oil temperature of transformer can rise gradually, in case the inside transformer oil temperature of transformer risees the back, not only can cause the cooling effect to worsen, serious can cause the inside power equipment of transformer to damage, so need one kind can cool off transformer oil, makes the transformer cool down.
The existing transformer oil is cooled by external equipment in a water cooling or air cooling mode, so that the transformer oil is cooled to the required temperature of the transformer, but the existing transformer cooling device cannot simultaneously cool a plurality of transformers.
Disclosure of Invention
In order to solve the problems, the transformer temperature control system and the control method thereof can monitor the temperature of the transformer oil in a plurality of transformers and sequentially cool the transformer oil in the transformers to reduce the temperature of the transformer oil to the temperature required by the transformers.
The invention provides a transformer temperature control system and a control method thereof, wherein the transformer temperature control system comprises a plurality of transformer bodies, a cooling device, a filtering device and a control system, each transformer body is provided with a temperature detection sensor, an oil inlet end and an oil outlet end, the temperature detection sensor is used for detecting the temperature of transformer oil in the transformer body, the oil outlet end is connected with the cooling device through a pipeline, the oil inlet end is connected with the filtering device through a pipeline, electromagnetic proportional valves are respectively arranged on the pipelines of the oil inlet end and the oil outlet end, the cooling device and the filtering device are connected through a pipeline, an oil pump, a temperature detection sensor and a pressure sensor are arranged on the pipeline and used for driving the transformer oil to flow in the pipeline, and the control system is connected with the two temperature detection sensors, each electromagnetic proportional valve, the pressure sensor and the oil pump.
Further control system includes operating panel, control chip, digital output module, signal detection module and signal output module, control chip links to each other with operating panel, digital output module, signal detection module and signal output module, operating panel has operation interface, has operating button and can set up the parameter, digital output module links to each other with the oil pump, signal detection module links to each other with temperature detection sensor and pressure sensor, signal output module links to each other with the electromagnetism proportional valve.
The temperature detection sensor comprises a detection port and a signal transmission port, the detection port can detect the temperature of transformer oil in the transformer body, and the signal transmission port is connected with a signal detection module of the controller through a connecting wire, so that the controller can detect the parameter value in the temperature detection sensor.
Further pressure sensor installs between oil pump and filter equipment, and this pressure sensor includes detection port and signal transmission port, detection port can detect the pressure parameter value of oil pump and filter equipment, signal transmission port passes through the connecting wire and links to each other with the signal detection module of controller, makes the controller can detect the parameter value in the pressure sensor.
The cooling device can be air cooling equipment or water cooling equipment, and can cool transformer oil in the transformer.
Furthermore, the filter device is provided with a filter screen, and impurities in the transformer can be filtered under the action force of the oil pump.
The oil pump further comprises a power input end and a control end, the power input end is connected into a power supply through a connecting wire, and the control end is connected with the digital quantity output module of the controller, so that the controller can automatically operate the oil pump.
According to the structure, the control method of the temperature control system of the plurality of transformers is as follows:
the method comprises the following steps: respectively connecting the oil inlet ends and the oil outlet ends of a plurality of transformers with a filtering device and a cooling device through pipelines, installing an electromagnetic proportional valve on each pipeline, and filling transformer oil into the cooling device, the filtering device and the pipelines;
step two: setting a normal working temperature parameter value of transformer oil in the transformer and a parameter value of high-temperature transformer oil on an operation panel of a control system respectively, and setting a plurality of oil temperature grades such as a primary (being in a normal working temperature range), a secondary (being in a higher temperature range), a tertiary (being in a required cooling temperature range) and a quaternary (being in a dangerous temperature range) according to a difference value between the normal working temperature parameter value and the parameter value of the high-temperature transformer oil;
step three: if the control system monitors that the oil in the plurality of transformers is about to reach the third level, the control system firstly cools one of the transformers and then enters the fourth step;
step four: the control system firstly operates the electromagnetic proportional valves on the pipelines at the oil inlet end and the oil outlet end of the transformer to enable the transformer oil in the transformer to be communicated with the transformer oil in the cooling device;
step five: the control system operates the oil pump to enable the transformer oil to flow in the cooling device and the filtering device, and the oil temperature of the transformer oil is reduced under the action of the cooling device;
step six: when the temperature of the transformer oil in the transformer is reduced but the transformer oil does not reach the first-level state, entering a seventh step when a plurality of transformers in the transformer reach a third-level state or even a fourth-level state, and entering an eighth step if the phenomenon does not exist;
step seven: and the control system stops cooling the transformer, stops operating the oil pump, closes the electromagnetic proportional valves at the two ends of the transformer, cools the transformer with the highest danger level firstly, and then enters the step four again.
Step eight: the control system reduces the transformer oil in the transformer to one level (within the normal operating temperature range).
Drawings
FIG. 1 is a schematic diagram of the overall structure of a transformer temperature control system according to the present invention;
FIG. 2 is a schematic diagram of a control structure of a transformer temperature control system according to the present invention;
fig. 3 is a schematic structural diagram of an embodiment of a transformer temperature control system according to the present invention.
In the figure: 1. a transformer body; 2. a cooling device; 3. a filtration device; 4. a control system; 5. a temperature detection sensor; 6. an oil inlet end; 7. an oil outlet end; 8. an electromagnetic proportional valve; 9. an oil pump; 10. a pressure sensor.
Detailed Description
The following describes in detail a specific embodiment of the transformer temperature control system and the control method thereof according to the present invention with reference to the accompanying drawings.
As shown in figure 1, the invention provides a transformer temperature control system and a control method thereof, the transformer temperature control system comprises a plurality of transformer bodies 1, a cooling device 2, a filtering device 3 and a control system 4, wherein each transformer body 1 is provided with a temperature detection sensor 5, an oil inlet end 6 and an oil outlet end 7, the temperature detection sensor 5 is used for detecting the temperature of transformer oil in the transformer body 1, the oil outlet end 7 is connected with the cooling device 2 through a pipeline, the oil inlet end 6 is connected with the filtering device 3 through a pipeline, electromagnetic proportional valves 8 are respectively arranged on the pipelines of the oil inlet end 6 and the oil outlet end 7, the cooling device 2 is connected with the filtering device 3 through a pipeline, an oil pump 9, the temperature detection sensor 5 and a pressure sensor 10 are arranged on the pipeline and used for driving the transformer oil to flow in the pipeline, and the control system 4 is connected with the two temperature detection sensors 5, 5, Each of the electromagnetic proportional valve 8, the pressure sensor 10, and the oil pump 9 is connected.
As shown in fig. 2, the control system 4 includes an operation panel, a control chip, a digital output module, a signal detection module and a signal output module, the control chip is connected to the operation panel, the digital output module, the signal detection module and the signal output module, the operation panel has an operation interface, has an operation button and can set parameters, the digital output module is connected to the oil pump 9, the signal detection module is connected to the temperature detection sensor 5 and the pressure sensor 10, and the signal output module is connected to the electromagnetic proportional valve 8.
According to the above, the temperature detection sensor 5 includes a detection port and a signal transmission port, the detection port can detect the temperature of the transformer oil inside the transformer body 1, and the signal transmission port is connected with the signal detection module of the controller through a connection line, so that the controller can detect the parameter value inside the temperature detection sensor 5.
According to the above, wherein the pressure sensor 10 is installed between the oil pump 9 and the filtering device 3, the pressure sensor 10 comprises a detection port capable of detecting the pressure parameter values of the oil pump 9 and the filtering device 3, and a signal transmission port connected with the signal detection module of the controller through a connection line, so that the controller can detect the parameter values in the pressure sensor 10.
According to the above, the temperature reducing device 2 may be an air cooling device or a water cooling device, and can reduce the temperature of the transformer oil in the transformer.
According to the above, the filtering device 3 has a filter screen therein, and impurities in the transformer can be filtered under the action of the oil pump 9.
According to the above, the oil pump 9 comprises a power input end and a control end, the power input end is connected to a power supply through a connecting wire, and the control end is connected with the digital quantity output module of the controller, so that the controller can automatically operate the oil pump 9.
According to the structure, the control method of the temperature control system of the plurality of transformers is as follows:
the method comprises the following steps: respectively connecting the oil inlet ends 6 and the oil outlet ends 7 of a plurality of transformers with the filtering device 3 and the cooling device 2 through pipelines, installing an electromagnetic proportional valve 8 on each pipeline, and filling transformer oil into the cooling device 2, the filtering device 3 and the pipelines thereof;
step two: setting a normal working temperature parameter value of transformer oil in the transformer and a parameter value of high-temperature transformer oil on an operation panel of the control system 4, and setting a plurality of oil temperature grades, such as a primary (being a normal working temperature range), a secondary (being a higher temperature range), a tertiary (being a required cooling temperature range) and a quaternary (being a dangerous temperature range), according to a difference value between the normal working temperature parameter value and the parameter value of the high-temperature transformer oil;
step three: if the control system 4 monitors that the oil in the plurality of transformers is about to reach the third level, the control system 4 firstly cools one of the transformers, and the step four is carried out;
step four: the control system 4 firstly operates the electromagnetic proportional valves 8 on the pipelines of the oil inlet end 6 and the oil outlet end 7 of the transformer to enable the transformer oil in the transformer to be communicated with the transformer oil in the cooling device 2;
step five: the control system 4 operates the oil pump 9 to enable the transformer oil to flow in the cooling device 2 and the filtering device 3, and the temperature of the transformer oil is reduced under the action of the cooling device 2;
step six: when the temperature of the transformer oil in the transformer is reduced but the transformer oil does not reach the first-level state, entering a seventh step when a plurality of transformers in the transformer reach a third-level state or even a fourth-level state, and entering an eighth step if the phenomenon does not exist;
step seven: and the control system 4 stops cooling the transformer, the control system 4 stops operating the oil pump 9, the electromagnetic proportional valves 8 at the two ends of the transformer are closed, the transformer with the highest danger level is cooled first, and the step four is performed again.
Step eight: the control system 4 reduces the transformer oil in the transformer to one level (within the normal operating temperature range).
As shown in fig. 3, 3 transformers are provided in the figure, and the specific control manner is explained in detail as follows:
the 3 transformers are distinguished, from left to right, the first transformer, the second transformer and the third transformer are respectively arranged, wherein the oil inlet end 6 and the oil outlet end 7 of the first transformer, the second transformer and the third transformer are respectively connected with the filtering device 3 and the cooling device 2 through pipelines, the electromagnetic proportional valve 8 is arranged on each pipeline, the cooling device 2, the filtering device 3 and the pipelines thereof are filled with transformer oil, and the normal working temperature parameter values and the parameter values of the high-temperature transformer oil of the 3 transformers are set. If 3 transformers all are in tertiary state this moment, all need cool down, specific control is as follows:
step 1: the control system 4 firstly cools the first transformer, and the specific operations are as follows: the control system 4 firstly operates the electromagnetic proportional valves 8 on the pipelines of the oil inlet end 6 and the oil outlet end 7 of the transformer to enable the transformer oil in the transformer to be communicated with the transformer oil in the cooling device 2; the control system 4 operates the oil pump 9 to enable the transformer oil to flow in the cooling device 2 and the filtering device 3, and the temperature of the transformer oil is reduced under the action of the cooling device 2.
At this time, when the first transformer is out of the three-stage state but is not in the first-stage normal operating state, the control system 4 stops cooling the first transformer, cools the second transformer (assuming that the second transformer is in a slightly more serious state than the third transformer), and then enters step 2.
Step 2: the control system 4 cools the second transformer, and the specific operations are as follows: the control system 4 firstly operates the electromagnetic proportional valves 8 on the pipelines of the oil inlet end 6 and the oil outlet end 7 of the transformer to enable the transformer oil in the transformer to be communicated with the transformer oil in the cooling device 2; the control system 4 operates the oil pump 9 to enable the transformer oil to flow in the cooling device 2 and the filtering device 3, and the temperature of the transformer oil is reduced under the action of the cooling device 2.
At the moment, the first transformer and the second transformer are both separated from the three-stage state, but are not in the first-stage normal working state, at the moment, when the third transformer reaches the four-stage state, the control system 4 cools the third transformer, and the step 3 is carried out;
and step 3: the control system 4 cools the third transformer, and the specific operations are as follows: the control system 4 firstly operates the electromagnetic proportional valves 8 on the pipelines of the oil inlet end 6 and the oil outlet end 7 of the transformer to enable the transformer oil in the transformer to be communicated with the transformer oil in the cooling device 2; the control system 4 operates the oil pump 9 to enable the transformer oil to flow in the cooling device 2 and the filtering device 3, and the temperature of the transformer oil is reduced under the action of the cooling device 2.
The step is adopted to circularly cool each transformer, and 3 transformers can safely reach a primary normal working state.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. The utility model provides a transformer temperature control system, its characterized in that, includes a plurality of transformer bodies, heat sink, filter equipment and control system, the transformer body has temperature detection sensor, oil inlet end and an end of producing oil, and wherein temperature detection sensor is arranged in detecting the temperature of transformer oil in the transformer body, and wherein it links to each other with heat sink to produce oil the end through the pipeline, and the oil inlet end passes through the pipeline and links to each other with filter equipment, has all installed the electromagnetism proportional valve on the pipeline of oil inlet end and the end of producing oil, link to each other through the pipeline between heat sink and the filter equipment, installed oil pump, temperature detection sensor and pressure sensor on this pipeline for drive transformer oil flows in the pipeline, control system and two temperature detection sensors, each electromagnetism proportional valve, pressure sensor and oil pump are mutually.
2. The transformer temperature control system according to claim 1, wherein the control system comprises an operation panel, a control chip, a digital quantity output module, a signal detection module and a signal output module, the control chip is connected with the operation panel, the digital quantity output module, the signal detection module and the signal output module, the operation panel is provided with an operation interface, is provided with an operation button and can set parameters, the digital quantity output module is connected with the oil pump, the signal detection module is connected with the temperature detection sensor and the pressure sensor, and the signal output module is connected with the electromagnetic proportional valve.
3. The transformer temperature control system of claim 2, wherein the temperature detection sensor comprises a detection port and a signal transmission port, the detection port is capable of detecting the temperature of the transformer oil inside the transformer body, and the signal transmission port is connected with the signal detection module of the controller through a connection line, so that the controller is capable of detecting the parameter value inside the temperature detection sensor.
4. The transformer temperature control system of claim 2, wherein the pressure sensor is installed between the oil pump and the filtering device, the pressure sensor comprises a detection port and a signal transmission port, the detection port can detect pressure parameter values of the oil pump and the filtering device, and the signal transmission port is connected with the signal detection module of the controller through a connection line, so that the controller can detect the parameter values in the pressure sensor.
5. The transformer temperature control system of claim 1, wherein the temperature reduction device is an air cooling device.
6. The transformer temperature control system of claim 1, wherein the temperature reduction device is a water cooling device.
7. The transformer temperature control system of claim 1, wherein the filtering device comprises a filter screen, and the filter screen can filter impurities inside the transformer under the action of the oil pump.
8. The transformer temperature control system of claim 2, wherein the oil pump comprises a power input terminal and a control terminal, the power input terminal is connected to a power supply through a connection line, and the control terminal is connected to the digital output module of the controller, so that the controller can automatically operate the oil pump.
9. The method for controlling the transformer temperature control system according to any one of claims 1 to 8, wherein:
the method comprises the following steps: respectively connecting the oil inlet ends and the oil outlet ends of a plurality of transformers with a filtering device and a cooling device through pipelines, installing an electromagnetic proportional valve on each pipeline, and filling transformer oil into the cooling device, the filtering device and the pipelines;
step two: setting a normal working temperature parameter value of transformer oil in a transformer and a parameter value of high-temperature transformer oil on an operation panel of a control system respectively, and setting a plurality of oil temperature grades according to a difference value between the normal working temperature parameter value and the parameter value of the high-temperature transformer oil, wherein the first grade is a normal working temperature range, the second grade is a higher temperature range, the third grade is a required cooling temperature range, and the fourth grade is a dangerous temperature range;
step three: if the control system monitors that the oil in the plurality of transformers is about to reach the third level, the control system firstly cools one of the transformers and then enters the fourth step;
step four: the control system firstly operates the electromagnetic proportional valves on the pipelines at the oil inlet end and the oil outlet end of the transformer to enable the transformer oil in the transformer to be communicated with the transformer oil in the cooling device;
step five: the control system operates the oil pump to enable the transformer oil to flow in the cooling device and the filtering device, and the oil temperature of the transformer oil is reduced under the action of the cooling device;
step six: when the temperature of the transformer oil in the transformer is reduced but the transformer oil does not reach the first-level state, entering a seventh step when a plurality of transformers in the transformer reach a third-level state or even a fourth-level state, and entering an eighth step if the phenomenon does not exist;
step seven: and the control system stops cooling the transformer, stops operating the oil pump, closes the electromagnetic proportional valves at the two ends of the transformer, cools the transformer with the highest danger level firstly, and then enters the step four again.
Step eight: the control system reduces the transformer oil in the transformer to within a primary normal operating temperature range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110618123.1A CN113380501B (en) | 2021-06-03 | 2021-06-03 | Transformer temperature control system and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110618123.1A CN113380501B (en) | 2021-06-03 | 2021-06-03 | Transformer temperature control system and control method thereof |
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| CN113380501A true CN113380501A (en) | 2021-09-10 |
| CN113380501B CN113380501B (en) | 2022-08-19 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103677008A (en) * | 2013-12-03 | 2014-03-26 | 柳州市五环水暖器材经营部 | Oil circulation air-cooling control system of transformer of submerged arc furnace |
| CN103677007A (en) * | 2013-12-03 | 2014-03-26 | 柳州市五环水暖器材经营部 | Oil circulation water-cooling control system for transformer of submerged arc furnace |
| CN204242744U (en) * | 2014-11-04 | 2015-04-01 | 岳阳电力勘测设计院有限公司 | A kind of temperature control cooling transformer group |
| CN107424747A (en) * | 2017-07-28 | 2017-12-01 | 国网上海市电力公司 | A kind of transformer forces hydrologic cycle cooling system and its control method |
| CN210865814U (en) * | 2019-08-12 | 2020-06-26 | 山东五岳电器有限公司 | Cooling control device for transformer bank |
-
2021
- 2021-06-03 CN CN202110618123.1A patent/CN113380501B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103677008A (en) * | 2013-12-03 | 2014-03-26 | 柳州市五环水暖器材经营部 | Oil circulation air-cooling control system of transformer of submerged arc furnace |
| CN103677007A (en) * | 2013-12-03 | 2014-03-26 | 柳州市五环水暖器材经营部 | Oil circulation water-cooling control system for transformer of submerged arc furnace |
| CN204242744U (en) * | 2014-11-04 | 2015-04-01 | 岳阳电力勘测设计院有限公司 | A kind of temperature control cooling transformer group |
| CN107424747A (en) * | 2017-07-28 | 2017-12-01 | 国网上海市电力公司 | A kind of transformer forces hydrologic cycle cooling system and its control method |
| CN210865814U (en) * | 2019-08-12 | 2020-06-26 | 山东五岳电器有限公司 | Cooling control device for transformer bank |
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