CN112834063A - Power transformer temperature measuring device and measuring system capable of being checked on line - Google Patents
Power transformer temperature measuring device and measuring system capable of being checked on line Download PDFInfo
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- CN112834063A CN112834063A CN202011627621.4A CN202011627621A CN112834063A CN 112834063 A CN112834063 A CN 112834063A CN 202011627621 A CN202011627621 A CN 202011627621A CN 112834063 A CN112834063 A CN 112834063A
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- temperature measuring
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- 238000001514 detection method Methods 0.000 claims abstract description 26
- 238000012545 processing Methods 0.000 claims abstract description 8
- 238000009529 body temperature measurement Methods 0.000 claims description 10
- 238000012216 screening Methods 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 9
- 239000010409 thin film Substances 0.000 claims description 5
- 238000007689 inspection Methods 0.000 abstract description 13
- 230000000737 periodic effect Effects 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 12
- 229910052697 platinum Inorganic materials 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000012795 verification Methods 0.000 description 3
- 239000010408 film Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000001684 chronic effect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/18—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/024—Means for indicating or recording specially adapted for thermometers for remote indication
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K15/00—Testing or calibrating of thermometers
- G01K15/005—Calibration
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The application discloses but temperature measuring device for power transformer of online check-up includes thermometer, first sensor, second sensor and changer. The thermometer is used for detecting and displaying the operating temperature of the power transformer. The first sensor is used for detecting the operating temperature of the power transformer. The second sensor is used for detecting the operating temperature of the power transformer. The transmitter is provided with a first input end and a second input end, the first input end and the second input end are respectively connected to the first sensor and the second sensor, and the transmitter is used for processing and transmitting detection data of the first sensor and the second sensor. The temperature measuring device enables the inspection personnel to compare the data of the transmitter with the data of the thermometer, realizes implementation of periodic inspection under the condition of electrification, improves periodic inspection efficiency and inspection quality, and solves the problem that contradictions exist between a metering inspection period and a transformer substation operation and maintenance period.
Description
Technical Field
The application relates to the technical field of power transformers, in particular to a temperature measuring device and a temperature measuring system for a power transformer capable of being checked on line.
Background
The thermal protection reliability of the transformer is closely related to the accuracy of the thermometer, so that how to accurately acquire the real transformer operation temperature data of the transformer substation site and scientifically define the actual accuracy level of the thermometer in use is very important for ensuring the safe operation of the transformer.
JJG 310-. The working condition of uninterrupted continuous operation of the transformer substation does not support the power failure of the transformer to carry out thermometer inspection operation. Therefore, the verification period of the transformer thermometer is synchronously regulated to be 6 years according to the 6-year detection and repair period of the transformer in the China electric power industry standard DL 1400-2015 regulation. In practice it has been found that at least more than 30% of domestic thermometers have been rejected during the 6 year test cycle due to fatigue of the elastic element material or chronic leakage of the closed system. It can be seen that a contradiction exists between the metering verification period and the operation and maintenance period of the transformer substation, and the conventional uninterrupted continuous operation working condition of the transformer substation does not support the power failure of the transformer to carry out thermometer inspection operation. The 6-year verification interval is too long for most domestic thermometers, thus causing a large number of pointer thermometers to work with diseases and forming a risk for safe operation of the substation.
Content of application
The application provides a but temperature measuring device and measurement system for power transformer of online check-up can implement the cycle inspection under the electrified condition.
In a first aspect, an embodiment of the present application provides an online verifiable temperature measurement device for a power transformer, including a thermometer, a first sensor, a second sensor, and a transmitter. The thermometer is used for detecting and displaying the operating temperature of the power transformer. The first sensor is used for detecting the operating temperature of the power transformer. The second sensor is used for detecting the operating temperature of the power transformer. The transmitter is provided with a first input end and a second input end, the first input end and the second input end are respectively connected to the first sensor and the second sensor, and the transmitter is used for processing and transmitting detection data of the first sensor and the second sensor.
In some embodiments, the transmitter includes a storage module for storing data based on the first sensor and the second sensor at a plurality of predetermined temperature points, respectively.
In some of these embodiments, the transmitter further includes a wireless communication module for wirelessly transmitting the sensed data and the base data.
In some embodiments, the temperature measuring device for the power transformer further comprises a base, wherein the base is provided with a first connecting end and a second connecting end, and the first connecting end and the second connecting end are respectively connected to the first sensor and the second sensor. The transmitter is detachably mounted on the base, and the first input end and the second input end are connected with the first connecting end and the second connecting end respectively.
In some of these embodiments, the thermometer comprises a pressure-type thermometer, and the first sensor and the second sensor each comprise a thermal resistance sensor.
In some of these embodiments, the first sensor comprises a thin film thermal resistance sensor and the second sensor comprises a wire-wound thermal resistance sensor.
In some of these embodiments, the thermometer, the first sensor and the second sensor are mounted in the same area of the power transformer.
In a second aspect, an embodiment of the present application provides a temperature measurement system for a power transformer, including the temperature measurement device for a power transformer and the terminal in any of the above embodiments. The terminal is in communication connection with the temperature measuring device for the power transformer and is used for processing and displaying detection data of the temperature measuring device for the power transformer.
In some embodiments, the terminal has a calibration module for calibrating the detection data according to the basic data.
In some embodiments, the terminal has a screening module, and the screening module is configured to screen out basic data of a preset temperature point closest to the detection data, so that the calibration module calibrates the detection data according to the basic data screened by the screening module.
In some embodiments, the temperature measuring system for the power transformer further comprises a plurality of standard resistors, and each standard resistor is used for being connected to the transmitter.
According to the embodiment of the application, the temperature measuring device for the power transformer capable of being verified on line comprises a thermometer, a first sensor, a second sensor and a transmitter. The thermometer is used for detecting and displaying the operating temperature of the power transformer. The first sensor is used for detecting the operating temperature of the power transformer. The second sensor is used for detecting the operating temperature of the power transformer. The transmitter is provided with a first input end and a second input end, the first input end and the second input end are respectively connected to the first sensor and the second sensor, and the transmitter is used for processing and transmitting detection data of the first sensor and the second sensor. The temperature measuring device enables the inspection personnel to compare the data of the transmitter with the data of the thermometer, realizes implementation of periodic inspection under the condition of electrification, improves periodic inspection efficiency and inspection quality, and solves the problem that contradictions exist between a metering inspection period and a transformer substation operation and maintenance period.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of a temperature measuring device in an embodiment of the present application;
FIG. 2 is a schematic diagram of a transmitter and base connection according to an embodiment of the present application;
FIG. 3 is a schematic structural diagram of a temperature measurement system in an embodiment of the present application;
FIG. 4 is a schematic diagram of a transmitter connected to a standard resistor box in an embodiment of the present application.
Detailed description of the preferred embodiment
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1 to 4, an embodiment of the present application provides an online verifiable temperature measuring device 10 for a power transformer. The power transformer may be a digital twin power transformer. Temperature measuring device 10 includes a thermometer 11, a first sensor 12, a second sensor 13, and a transmitter 14.
The thermometer 11 is used for detecting and displaying the operating temperature of the power transformer. The thermometer 11 may include a pressure type thermometer 11, in which case the thermometer 11 may include a gauge 110 and a bulb 111.
The first sensor 12 is used to detect the operating temperature of the power transformer. The first sensor 12 may comprise a thermal resistance sensor, in which case the first sensor 12 may comprise a thin film thermal resistance sensor, for example, a thin film platinum resistance sensor. The number of the first sensors 12 may be plural, and the connection manner of the first sensors 12 is the same.
The second sensor 13 is used to detect the operating temperature of the power transformer. The second sensor 13 may comprise a thermal resistance sensor, in which case the second sensor 13 may comprise a wire-wound thermal resistance sensor, for example, a wire-wound platinum resistance sensor. The number of the second sensors 13 may be plural, and the connection manner of the second sensors 13 is the same.
It is to be noted that the thermometer 11, the first sensor 12 and the second sensor 13 may be installed in the same area of the power transformer.
The basic data for the first sensor 12 are illustrated below: the film type thermal resistance sensor has resistance values under the temperature field conditions of 80 ℃, 90 ℃ and 100 ℃. For the basic data of the second sensor 13, the following is illustrated: the resistance values of the wire-wound platinum resistance sensor under the temperature field conditions of 80 ℃, 90 ℃ and 100 ℃ respectively. The storage of the base data can be done before the transmitter 14 is shipped.
The temperature measuring device 10 for the power transformer further comprises a base 15, wherein the base 15 is provided with a first connecting end and a second connecting end, and the first connecting end and the second connecting end are respectively connected to the first sensor 12 and the second sensor 13. The base 15 may be mounted on the power transformer via T35 standard rails.
Under the above conditions, transmitter 14 is detachably mounted on base 15, and the first input terminal and the second input terminal are connected to the first connection terminal and the second connection terminal, respectively. Transmitter 14 can be installed on base 15 by pluggable, and at this moment, transmitter 14 can have a plurality of plugs, and base 15 can have a plurality of jacks with the plug one-to-one, and the plug realizes the plug installation in inserting the jack. The above arrangement allows transmitter 14 to be removed under power-on conditions, calibration of transmitter 14 to be performed using a standard resistor box 40, and transmitter 14 inserted after calibration.
In a second aspect, an embodiment of the present application provides a temperature measurement system 1 for a power transformer, including the temperature measurement device 10 for a power transformer and the terminal 20 in any of the above embodiments.
The terminal 20 is in communication connection with the temperature measuring device 10 for the power transformer, and the terminal 20 is used for processing and displaying detection data of the temperature measuring device 10 for the power transformer. The terminal 20 is specifically an intelligent terminal, and may be an electronic product such as a mobile phone, a tablet computer, and a computer. The smart terminal 20 may retrieve data within the cloud server 30. The smart terminal 20 may cyclically display the detection data of the first sensor 12 and the second sensor 13.
The terminal 20 may have a calibration module for calibrating the test data based on the base data. The terminal 20 may have a screening module for screening out basic data of a preset temperature point closest to the detection data, so that the calibration module calibrates the detection data according to the basic data screened out by the screening module.
With the above arrangement, the calibration method may be as follows: the intelligent terminal 20 reads the detection data T1 of the film platinum resistance sensor and the detection data T2 of the wire-wound thermal resistance sensor, and the difference value delta between the two sets of data can be obtained as T1-T2. The intelligent terminal 20 retrieves the basic data T1 ' of the thin film platinum resistance sensor and the basic data T2 ' of the wire-wound thermal resistance sensor at the preset temperature point closest to the detection data, which are stored in the storage module, so as to obtain the difference value Δ ' between the two sets of data, i.e. T1 ' -T2 '. After the online comparison, the drift amounts δ Δ - Δ' of the platinum resistance sensors obtained by the two manufacturing processes can be obtained, and the smart terminal 20 automatically calibrates the detection data T1 of the first sensor 12 and the detection data T2 of the second sensor 13 according to the drift amounts.
The arrangement enables the virtual standard device formed by the first sensor 12, the second sensor 13, the transmitter 14 and the terminal 20 to be automatically calibrated in real time under the condition of operating environment, and the virtual standard device can be equivalent to the standard device after being calibrated.
The temperature measuring system 1 for the power transformer may further include a plurality of standard resistors, and each of the standard resistors is used to be connected to the transmitter 14. All standard resistors may be grouped together in a standard resistor box 40.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present application, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meaning of the above terms according to their specific circumstances.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. The utility model provides a but temperature measuring device for online check-up power transformer which characterized in that includes:
the thermometer is used for detecting and displaying the operating temperature of the power transformer;
the first sensor is used for detecting the operating temperature of the power transformer;
a second sensor for detecting an operating temperature of the power transformer; and
the transmitter is provided with a first input end and a second input end, the first input end and the second input end are respectively connected into the first sensor and the second sensor, and the transmitter is used for processing and transmitting detection data of the first sensor and the second sensor.
2. The temperature measuring apparatus for an electric power transformer according to claim 1,
the transmitter comprises a storage module, and the storage module is used for storing basic data of the first sensor and the second sensor at a plurality of preset temperature points respectively.
3. The temperature measuring apparatus for an electric power transformer according to claim 2,
the transmitter further comprises a wireless communication module for wirelessly transmitting the detection data and the basic data.
4. The temperature measuring apparatus for an electric power transformer as claimed in claim 1, further comprising:
the base is provided with a first connecting end and a second connecting end, and the first connecting end and the second connecting end are respectively connected into the first sensor and the second sensor;
the transmitter is detachably mounted on the base, and the first input end and the second input end are respectively connected with the first connecting end and the second connecting end.
5. The temperature measuring apparatus for an electric power transformer according to claim 1,
the thermometer comprises a pressure thermometer, the first sensor and the second sensor each comprise a thermal resistance sensor;
the first sensor comprises a thin film thermal resistance sensor and the second sensor comprises a wire wound thermal resistance sensor.
6. The temperature measuring apparatus for an electric power transformer according to claim 1,
the thermometer, the first sensor and the second sensor are installed in the same area of the power transformer.
7. A temperature measurement system for a power transformer, comprising:
a temperature measuring device for an electric power transformer as recited in any one of claims 1 to 6; and
and the terminal is in communication connection with the temperature measuring device for the power transformer and is used for processing and displaying the detection data of the temperature measuring device for the power transformer.
8. The temperature measurement system for an electric power transformer according to claim 7,
the terminal is provided with a calibration module, and the calibration module is used for calibrating the detection data according to basic data.
9. The temperature measurement system for an electric power transformer according to claim 8,
the terminal is provided with a screening module, and the screening module is used for screening out the basic data of the preset temperature point closest to the detection data, so that the calibration module calibrates the detection data according to the basic data screened out by the screening module.
10. The temperature measurement system for an electric power transformer of claim 7, further comprising:
and the number of the standard resistors is multiple, and each standard resistor is used for being connected into the transmitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011627621.4A CN112834063A (en) | 2020-12-31 | 2020-12-31 | Power transformer temperature measuring device and measuring system capable of being checked on line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011627621.4A CN112834063A (en) | 2020-12-31 | 2020-12-31 | Power transformer temperature measuring device and measuring system capable of being checked on line |
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| Publication Number | Publication Date |
|---|---|
| CN112834063A true CN112834063A (en) | 2021-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011627621.4A Pending CN112834063A (en) | 2020-12-31 | 2020-12-31 | Power transformer temperature measuring device and measuring system capable of being checked on line |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113485156A (en) * | 2021-06-17 | 2021-10-08 | 国家电网有限公司 | Transformer digital twin cloud platform and implementation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010243354A (en) * | 2009-04-07 | 2010-10-28 | Canon Inc | Temperature measuring device, temperature measuring method, exposure device and device production method |
| CN202230397U (en) * | 2011-09-07 | 2012-05-23 | 福建省力得自动化设备有限公司 | Novel temperature controller for oil-immersed transformer |
| CN208488190U (en) * | 2018-06-29 | 2019-02-12 | 国网湖北省电力有限公司孝感供电公司 | A kind of pointer main transformer temperature system failure detection device in substation |
| CN211576413U (en) * | 2019-09-18 | 2020-09-25 | 北京华科仪科技股份有限公司 | Online intelligent double-sensor temperature monitoring device with traceable value |
-
2020
- 2020-12-31 CN CN202011627621.4A patent/CN112834063A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010243354A (en) * | 2009-04-07 | 2010-10-28 | Canon Inc | Temperature measuring device, temperature measuring method, exposure device and device production method |
| CN202230397U (en) * | 2011-09-07 | 2012-05-23 | 福建省力得自动化设备有限公司 | Novel temperature controller for oil-immersed transformer |
| CN208488190U (en) * | 2018-06-29 | 2019-02-12 | 国网湖北省电力有限公司孝感供电公司 | A kind of pointer main transformer temperature system failure detection device in substation |
| CN211576413U (en) * | 2019-09-18 | 2020-09-25 | 北京华科仪科技股份有限公司 | Online intelligent double-sensor temperature monitoring device with traceable value |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113485156A (en) * | 2021-06-17 | 2021-10-08 | 国家电网有限公司 | Transformer digital twin cloud platform and implementation method thereof |
| CN113485156B (en) * | 2021-06-17 | 2024-03-19 | 国家电网有限公司 | Digital twin cloud platform of transformer and implementation method thereof |
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