CN112824913A - Aging detection system for transformer insulation - Google Patents
Aging detection system for transformer insulation Download PDFInfo
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- CN112824913A CN112824913A CN201911143401.1A CN201911143401A CN112824913A CN 112824913 A CN112824913 A CN 112824913A CN 201911143401 A CN201911143401 A CN 201911143401A CN 112824913 A CN112824913 A CN 112824913A
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- 238000001514 detection method Methods 0.000 title claims abstract description 61
- 230000032683 aging Effects 0.000 title claims abstract description 41
- 238000009413 insulation Methods 0.000 title claims abstract description 21
- 238000004891 communication Methods 0.000 claims abstract description 78
- 238000012545 processing Methods 0.000 claims abstract description 33
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 38
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 claims description 38
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 19
- 238000006243 chemical reaction Methods 0.000 claims description 15
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 14
- 239000001569 carbon dioxide Substances 0.000 claims description 14
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 14
- 229910052739 hydrogen Inorganic materials 0.000 claims description 14
- 239000001257 hydrogen Substances 0.000 claims description 14
- 150000002431 hydrogen Chemical class 0.000 claims description 11
- 230000005611 electricity Effects 0.000 claims description 10
- 230000001965 increasing effect Effects 0.000 claims description 9
- 230000003828 downregulation Effects 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 230000003827 upregulation Effects 0.000 claims description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- 230000000007 visual effect Effects 0.000 claims description 3
- 230000015556 catabolic process Effects 0.000 claims 1
- 238000006731 degradation reaction Methods 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 abstract description 6
- 230000002431 foraging effect Effects 0.000 abstract description 4
- 230000002708 enhancing effect Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 4
- 239000000123 paper Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/003—Environmental or reliability tests
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention discloses an aging detection system for transformer insulation, which belongs to the field of transformer aging detection, and comprises a sensor detection module, a first wireless communication unit, a second wireless communication unit, a processing control module, a wireless communication module, an upper computer and an alarm module, wherein the sensor detection module and the first wireless communication unit are arranged in a transformer, the second wireless communication unit, the processing control module and the wireless communication module are arranged on a transformer shell, the upper computer and the alarm module are arranged on a remote control terminal, the aging product content of insulating paper in the transformer can be monitored and collected, the detected aging parameter data can be transmitted to the processing control module through the first wireless communication unit connected with the second wireless communication unit, the data is transmitted to the upper computer through the wireless communication module connected with the processing control module for a user to check in real time for aging monitoring, and once the aging degree is found to influence the normal work of the transformer, can be maintained for the first time.
Description
Technical Field
The invention relates to the field of transformer aging detection, in particular to an aging detection system for transformer insulation.
Background
The oil-immersed power transformer is one of important and key devices for power output of a nuclear power station, the general design life of the oil-immersed power transformer is 30 years, the actual operation life is generally 20-40 years, and in actual work, the safe operation and the service life of the oil-immersed power transformer are directly influenced and determined by the insulation aging degree of the transformer. After the transformer operates for a period of time, the aging speed of the transformer insulator can be accelerated due to a plurality of external actions such as electric field, moisture, temperature, mechanical force and the like in the operation process, generally, transformer oil can be regenerated or replaced in the normal operation process of the transformer, so the aging and service life of the oil-immersed transformer mainly depend on the insulating paper board and the actual use condition. Once an accident occurs during normal operation of a large-scale power transformer, a large-scale power failure may occur, and the maintenance period of the large-scale power transformer also needs about half a year. Therefore, due to the expensive cost of the power transformer itself and its important position in the power system, the direct and indirect losses caused by the accident will be very large.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide an aging detection system for transformer insulation, which can monitor and collect the content of an aging product of insulation paper in a transformer, can transmit detected aging parameter data to a processing control module through a first wireless communication unit connected with a second wireless communication unit, and then transmits the data to an upper computer through a wireless communication module connected with the processing control module for a user to check in real time for aging monitoring, and once the aging degree is found to influence the normal work of the transformer, the transformer can be maintained for the first time.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
The utility model provides an ageing detection system for transformer is insulating, is including setting up sensor detection module, the first wireless communication unit in the transformer is inside, still including setting up second wireless communication unit, processing control module and the wireless communication module on the transformer shell body to and set up host computer and the alarm module at remote control terminal.
Further, the sensor detection module is in communication connection with the first wireless communication unit, the sensor detection module is used for detecting parameters of the transformer, the first wireless communication unit is in communication connection with the second wireless communication unit, the second wireless communication unit is in communication connection with the processing control module, the processing control module is in communication connection with the upper computer through the wireless communication module, and the upper computer is electrically connected with the alarm module.
Further, the sensor detection module comprises a moisture sensor, a temperature sensor, a carbon monoxide sensor, a carbon dioxide sensor, a hydrogen sensor, a frequency sensor and a furfural sensor, and the moisture sensor, the temperature sensor, the carbon monoxide sensor, the carbon dioxide sensor, the hydrogen sensor, the frequency sensor and the furfural sensor are all in communication connection with the first wireless communication unit.
Further, the moisture sensor is used for detecting moisture parameters;
the temperature sensor is used for detecting temperature parameters;
the carbon monoxide sensor is used for detecting the content of carbon monoxide;
the carbon dioxide sensor is used for detecting the content of carbon dioxide;
the hydrogen sensor is used for detecting the hydrogen content;
the frequency sensor is used for detecting frequency parameters;
the furfural sensor is used for detecting the content of furfural.
Furthermore, the first wireless communication unit and the second wireless communication unit are both zigbee wireless communication modules, the wireless communication modules are GPRS communication modules, and the alarm is an audible and visual alarm.
Further, an enhanced current power device is further arranged on the outer shell of the transformer, the enhanced current power device is detachably connected with the sensor detection module, and the enhanced current power device comprises a first transformer module, a second transformer module and a power circuit module, wherein when the enhanced current power device is connected with the sensor detection module, the first transformer module is used for acquiring an original current and voltage signal, and when a high-level signal sent by the sensor detection module is received, the original current and voltage signal is subjected to power increase processing to obtain an output current and voltage signal; the second transformer module is electrically connected with the first transformer module and is used for performing current increasing conversion processing on the output current voltage signal to obtain a conversion current voltage signal, and the power of the conversion current voltage signal is equal to that of the output current voltage signal; and the power circuit module is electrically connected with the second transformer module and is used for receiving and outputting the converted current and voltage signals.
Further, the first transformer module comprises a first cascade end, a first positive regulation end, a first negative regulation end, a first power input end, a first power output end, a first positive sensing end and a first negative sensing end;
the second transformer module comprises a second cascade end, a second positive regulating end, a second negative regulating end, a second power input end, a second power output end, a second positive sensing end and a second negative sensing end;
the power circuit module comprises a load resistor, a first load output end and a second load output end; the load resistor comprises a first resistor end and a second resistor end;
wherein, first cascade end with second cascade end electricity is connected, first positive regulation end with first negative regulation end electricity is connected, first power input end with second power input end electricity is connected, first power output end, second power output end, first positive sensing end, the positive sensing end of second and first load output all with first resistance end electricity is connected, first negative sensing end the negative sensing end of second load output and second resistance end all is connected with the earthing terminal electricity.
Furthermore, the current power enhancing device further comprises a logic operator, wherein the logic operator is connected with the second transformer module and is used for performing logic and processing on the converted current-voltage signal and the original current-voltage signal to obtain a logic and result signal.
Further, the current boosting power device further includes a reset port, where the reset port is connected to the first transformer module and the second transformer module, respectively, and is configured to receive a reset signal sent by the sensor detection module, so as to reset the first transformer module and the second transformer module.
Furthermore, the current power enhancing device further includes a start port, and the start port is connected to the first transformer module and the second transformer module, and is configured to receive a start signal sent by the sensor detection module, so as to start the first transformer module and the second transformer module.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) the transformer aging monitoring system is provided with a sensor detection module, a moisture sensor, a CO2 sensor, an H2 sensor and a furfural sensor, wherein the sensor detection module comprises the moisture sensor, a temperature sensor, a carbon monoxide sensor, a carbon dioxide sensor, a hydrogen sensor, a frequency sensor and a furfural sensor, can monitor and collect the content of aging products of insulating paper in the transformer, such as moisture, CO2, H2 and furfural content, can transmit detected aging parameter data to a processing control module through a first wireless communication unit connected with a second wireless communication unit, and then transmit the data to an upper computer through a wireless communication module connected with the processing control module for a user to check in real time for aging monitoring.
(2) The current boosting power device comprises a first transformer module, a second transformer module and a power circuit module. Wherein: the first transformer module is used for acquiring an original current and voltage signal and performing power increasing processing on the original current and voltage signal to obtain an output current and voltage signal when receiving a high level signal sent by the sensor detection module; the second transformer module is connected with the first transformer module and is used for carrying out current increasing conversion processing on the output current voltage signal to obtain a conversion current voltage signal, wherein the power of the conversion current voltage signal is equal to that of the output current voltage signal; and the power circuit module is connected with the second transformer module and used for receiving and outputting the converted current and voltage signals. Therefore, the current power enhancing device can solve the problem that the traditional aging detection system cannot provide high current output on the premise of not modifying the traditional aging detection system, and effectively saves the aging detection cost.
Drawings
FIG. 1 is a block diagram of the present invention.
Detailed Description
The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
referring to fig. 1, the aging detection system for transformer insulation comprises a sensor detection module and a first wireless communication unit which are arranged inside a transformer, a second wireless communication unit, a processing control module and a wireless communication module which are arranged on a transformer outer shell, and an upper computer and an alarm module which are arranged on a remote control terminal.
The sensor detection module is in communication connection with the first wireless communication unit, the sensor detection module is used for detecting parameters of the transformer, the first wireless communication unit is in communication connection with the second wireless communication unit, the second wireless communication unit is in communication connection with the processing control module, the processing control module is in communication connection with an upper computer through the wireless communication module, and the upper computer is electrically connected with the alarm module.
The sensor detection module comprises a moisture sensor, a temperature sensor, a carbon monoxide sensor, a carbon dioxide sensor, a hydrogen sensor, a frequency sensor and a furfural sensor, and the moisture sensor, the temperature sensor, the carbon monoxide sensor, the carbon dioxide sensor, the hydrogen sensor, the frequency sensor and the furfural sensor are all in communication connection with the first wireless communication unit.
The moisture sensor is used for detecting moisture parameters;
the temperature sensor is used for detecting temperature parameters;
the carbon monoxide sensor is used for detecting the content of carbon monoxide;
the carbon dioxide sensor is used for detecting the content of carbon dioxide;
the hydrogen sensor is used for detecting the hydrogen content;
the frequency sensor is used for detecting frequency parameters;
the furfural sensor is used for detecting the content of furfural.
The first wireless communication unit and the second wireless communication unit are both zigbee wireless communication modules, the wireless communication modules are GPRS communication modules, and the alarm is an audible and visual alarm.
During the insulation papering process, the polymerization degree and the tensile strength of the insulation papering process are gradually reduced, characteristic aging products such as moisture, CO2, H2 and furfural are generated, and therefore the volume resistivity and the tensile strength are reduced, and dielectric loss is increased. In practice, the ageing of solid paper insulation is irreversible and directly affects the operation of mechanical and electrical strength.
The transformer aging monitoring system is provided with a sensor detection module, a moisture sensor, a CO2 sensor, an H2 sensor and a furfural sensor, wherein the sensor detection module comprises the moisture sensor, a temperature sensor, a carbon monoxide sensor, a carbon dioxide sensor, a hydrogen sensor, a frequency sensor and a furfural sensor, can monitor and collect the content of aging products of insulating paper in the transformer, such as moisture, CO2, H2 and furfural content, can transmit detected aging parameter data to a processing control module through a first wireless communication unit connected with a second wireless communication unit, and then transmit the data to an upper computer through a wireless communication module connected with the processing control module for a user to check in real time for aging monitoring.
The shell of the transformer is also provided with a current enhancing power device, the current enhancing power device is detachably connected with the sensor detection module, and the current enhancing power device comprises a first transformer module, a second transformer module and a power circuit module, wherein when the current enhancing power device is connected with the sensor detection module, the first transformer module is used for acquiring an original current and voltage signal and performing power increasing processing on the original current and voltage signal when receiving a high level signal sent by the sensor detection module to obtain an output current and voltage signal; the second transformer module is electrically connected with the first transformer module and is used for carrying out current increasing conversion processing on the output current voltage signal to obtain a conversion current voltage signal, and the power of the conversion current voltage signal is equal to that of the output current voltage signal; the power circuit module is electrically connected with the second transformer module and is used for receiving and outputting the converted current and voltage signals.
The first transformer module comprises a first cascade end, a first positive regulation end, a first negative regulation end, a first power input end, a first power output end, a first positive sensing end and a first negative sensing end;
the second transformer module comprises a second cascade end, a second positive regulating end, a second negative regulating end, a second power input end, a second power output end, a second positive sensing end and a second negative sensing end;
the power circuit module comprises a load resistor, a first load output end and a second load output end; the load resistor comprises a first resistor end and a second resistor end;
the first cascade end is electrically connected with the second cascade end, the first positive regulation end is electrically connected with the first negative regulation end, the first power input end is electrically connected with the second power input end, the first power output end, the second power output end, the first positive sensing end, the second positive sensing end and the first load output end are all electrically connected with the first resistor end, and the first negative sensing end, the second load output end and the second resistor end are all electrically connected with the grounding end.
The current power enhancing device also comprises a logic arithmetic unit which is connected with the second transformer module and used for carrying out logic and processing on the converted current-voltage signal and the original current-voltage signal to obtain a logic and result signal.
The current-boosting power device further comprises a reset port, wherein the reset port is respectively connected with the first transformer module and the second transformer module and used for receiving a reset signal sent by the sensor detection module so as to reset the first transformer module and the second transformer module.
The current power enhancing device further comprises a starting port, wherein the starting port is respectively connected with the first transformer module and the second transformer module and used for receiving a starting signal sent by the sensor detection module so as to start the first transformer module and the second transformer module.
The current boosting power device comprises a first transformer module, a second transformer module and a power circuit module. Wherein: the first transformer module is used for acquiring an original current and voltage signal and performing power increasing processing on the original current and voltage signal to obtain an output current and voltage signal when receiving a high level signal sent by the sensor detection module; the second transformer module is connected with the first transformer module and is used for carrying out current increasing conversion processing on the output current voltage signal to obtain a conversion current voltage signal, wherein the power of the conversion current voltage signal is equal to that of the output current voltage signal; and the power circuit module is connected with the second transformer module and used for receiving and outputting the converted current and voltage signals. Therefore, the current power enhancing device can solve the problem that the traditional aging detection system cannot provide high current output on the premise of not modifying the traditional aging detection system, and effectively saves the aging detection cost.
The foregoing is only a preferred embodiment of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.
Claims (10)
1. An aging detection system for transformer insulation is characterized in that: the transformer shell body is provided with a sensor detection module, a first wireless communication unit, a second wireless communication unit, a processing control module, a wireless communication module, an upper computer and an alarm module, wherein the sensor detection module and the first wireless communication unit are arranged inside the transformer, and the second wireless communication unit, the processing control module and the wireless communication module are arranged on the transformer shell body.
2. The aging detection system for transformer insulation of claim 1, wherein: the sensor detection module is in communication connection with the first wireless communication unit, the sensor detection module is used for detecting various parameters of the transformer, the first wireless communication unit is in communication connection with the second wireless communication unit, the second wireless communication unit is in communication connection with the processing control module, the processing control module is in communication connection with the upper computer through the wireless communication module, and the upper computer is electrically connected with the alarm module.
3. The aging detection system for transformer insulation of claim 1, wherein: the sensor detection module comprises a moisture sensor, a temperature sensor, a carbon monoxide sensor, a carbon dioxide sensor, a hydrogen sensor, a frequency sensor and a furfural sensor, and the moisture sensor, the temperature sensor, the carbon monoxide sensor, the carbon dioxide sensor, the hydrogen sensor, the frequency sensor and the furfural sensor are all in communication connection with the first wireless communication unit.
4. A degradation detection system for transformer insulation according to claim 3, characterized in that: the moisture sensor is used for detecting moisture parameters;
the temperature sensor is used for detecting temperature parameters;
the carbon monoxide sensor is used for detecting the content of carbon monoxide;
the carbon dioxide sensor is used for detecting the content of carbon dioxide;
the hydrogen sensor is used for detecting the hydrogen content;
the frequency sensor is used for detecting frequency parameters;
the furfural sensor is used for detecting the content of furfural.
5. The aging detection system for transformer insulation of claim 1, wherein: the first wireless communication unit and the second wireless communication unit are both zigbee wireless communication modules, the wireless communication modules are GPRS communication modules, and the alarm is an audible and visual alarm.
6. The aging detection system for transformer insulation of claim 1, wherein: the shell of the transformer is also provided with a current enhancement power device, the current enhancement power device is detachably connected with the sensor detection module, and the current enhancement power device comprises a first transformer module, a second transformer module and a power circuit module, wherein when the current enhancement power device is connected with the sensor detection module, the first transformer module is used for acquiring an original current and voltage signal and performing power enhancement processing on the original current and voltage signal when receiving a high level signal sent by the sensor detection module to obtain an output current and voltage signal; the second transformer module is electrically connected with the first transformer module and is used for performing current increasing conversion processing on the output current voltage signal to obtain a conversion current voltage signal, and the power of the conversion current voltage signal is equal to that of the output current voltage signal; and the power circuit module is electrically connected with the second transformer module and is used for receiving and outputting the converted current and voltage signals.
7. The aging detection system for transformer insulation of claim 6, wherein: the first transformer module comprises a first cascade end, a first positive regulation end, a first negative regulation end, a first power input end, a first power output end, a first positive sensing end and a first negative sensing end;
the second transformer module comprises a second cascade end, a second positive regulating end, a second negative regulating end, a second power input end, a second power output end, a second positive sensing end and a second negative sensing end;
the power circuit module comprises a load resistor, a first load output end and a second load output end; the load resistor comprises a first resistor end and a second resistor end;
wherein, first cascade end with second cascade end electricity is connected, first positive regulation end with first negative regulation end electricity is connected, first power input end with second power input end electricity is connected, first power output end, second power output end, first positive sensing end, the positive sensing end of second and first load output all with first resistance end electricity is connected, first negative sensing end the negative sensing end of second load output and second resistance end all is connected with the earthing terminal electricity.
8. The aging detection system for transformer insulation of claim 6, wherein: the current-boosting power device also comprises a logic arithmetic unit which is connected with the second transformer module and is used for carrying out logic and processing on the converted current-voltage signal and the original current-voltage signal to obtain a logic and result signal.
9. The aging detection system for transformer insulation of claim 6, wherein: the current-boosting power device further comprises a reset port, wherein the reset port is respectively connected with the first transformer module and the second transformer module and is used for receiving a reset signal sent by the sensor detection module so as to reset the first transformer module and the second transformer module.
10. The aging detection system for transformer insulation of claim 6, wherein: the current boosting power device further comprises a starting port, wherein the starting port is respectively connected with the first transformer module and the second transformer module and used for receiving a starting signal sent by the sensor detection module so as to start the first transformer module and the second transformer module.
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| CN201911143401.1A CN112824913A (en) | 2019-11-20 | 2019-11-20 | Aging detection system for transformer insulation |
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| CN201911143401.1A CN112824913A (en) | 2019-11-20 | 2019-11-20 | Aging detection system for transformer insulation |
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| CN114994147A (en) * | 2022-08-05 | 2022-09-02 | 杭州电子科技大学 | Oil-immersed transformer and monitoring sensor based on oil aging automatic monitoring |
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