CN116047242A - Automatic detection device and method for aging degree and parameters of transformer oil paper insulation system - Google Patents
Automatic detection device and method for aging degree and parameters of transformer oil paper insulation system Download PDFInfo
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- CN116047242A CN116047242A CN202310024854.2A CN202310024854A CN116047242A CN 116047242 A CN116047242 A CN 116047242A CN 202310024854 A CN202310024854 A CN 202310024854A CN 116047242 A CN116047242 A CN 116047242A
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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
- G01R31/12—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
- G01R31/1263—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 of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/22—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using measurement of acoustic effects
- G01K11/26—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using measurement of acoustic effects of resonant frequencies
- G01K11/265—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using measurement of acoustic effects of resonant frequencies using surface acoustic wave [SAW]
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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
- G01R31/12—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
- G01R31/16—Construction of testing vessels; Electrodes therefor
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Abstract
The invention provides an automatic detection device for the aging degree and parameters of a transformer oil paper insulation system, which comprises a main oil tank, a partition device, a sampling plate, a sampling grid, a sample table, a heating device, a sampling door, a high-voltage electrode and the like; the detection module comprises a breakdown voltage measurement module, a temperature monitoring module and a furfural content monitoring module in oil; the main oil tank is a tank body for accelerating an aging experiment and automatically measuring parameters, and the middle of the main oil tank is separated by a separation device; the sampling plate consists of a partition plate and sampling grids, and can finish independent real-time sampling of the paper-coated copper according to a terminal command; the heating device is composed of an infrared heating lamp, measures the temperature of the oil sample through a surface acoustic wave temperature sensor, and periodically sends real-time temperature information to the terminal; the high-voltage electrode adopts a plate-plate electrode, and the sampling table is matched with the high-voltage electrode to realize simultaneous measurement of the ageing parameters of the oilpaper; the invention can realize real-time aging degree monitoring and experimental data wireless transmission of the transformer oil paper insulation system and has the characteristics of simplicity and visualization.
Description
Technical Field
The invention relates to an automatic detection device and method for aging degree and parameters of a transformer oil paper insulation system, and belongs to the field of transformer insulation monitoring and fault diagnosis.
Background
Transformers are the core of energy conversion and transmission in the power grid, equipment is expensive, and operational reliability is related to the economy and stability of the power grid. In recent years, sulfur corrosion faults of transformers frequently occur, so that a large amount of economic loss is caused, potential safety hazards are brought to a power grid, so that many scholars at home and abroad develop researches on sulfur corrosion faults of a transformer oil paper insulation system, however, the current equipment for carrying out accelerated heat aging experiments on the transformer oil paper insulation system is relatively backward, many manual operations are still needed, the manpower use is increased, and automatic equipment is lacked. Therefore, the automatic upgrading of the aging test equipment of the transformer oil paper insulation system is effectively performed at a proper time, so that the aging test step is quickened and simplified, and the method has important practical significance for researching sulfur corrosion faults.
When the prior ageing test equipment is used for experiments, after ageing is finished, when an experimenter needs to know the ageing degree or the measurement parameters, the experimenter needs to take out an oil sample from an oil tank and add the oil sample into the equipment for measuring the parameters, then setting operation is carried out on other measurement equipment, and the data obtained after the operation is finished also needs to be summarized to a terminal from each equipment. The whole process is complicated and labor-consuming, and the laboratory personnel are required in the whole process. In addition, the current aging test equipment cannot monitor the aging degree in real time in the aging process, and the monitoring force on aging is weak. Therefore, it is necessary to design a wireless transmission aging test apparatus capable of automatically transmitting aging degree data in real time and automatically detecting characteristic parameters, which is a design difficulty of the apparatus and method.
Disclosure of Invention
The invention provides an automatic detection device and method for the aging degree and parameters of a transformer oil paper insulation system, and the experimental device can simultaneously realize real-time aging degree monitoring, automatic measurement of aging parameters and wireless transmission of experimental data of the transformer oil paper insulation system and has the characteristics of sealing, simplicity and visualization.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the utility model provides a transformer oil paper insulation system ageing degree and parameter automatic checkout device which characterized in that: comprises a main oil tank, a partition device, a sampling plate, a sampling table, a heating device, a high-voltage electrode and the like.
The main oil tank is a tank body for an accelerated aging experiment and automatically measuring parameters, and is made of quartz glass, and the middle of the main oil tank is separated by a separation device; the isolating device consists of two pieces of quartz glass, separates the aging experiment of the main oil tank from the aging parameter measurement, and realizes the function of one tank for two purposes; the main oil tank contains two oil outlet valves, and the oil outlet valve of upside can realize ageing oil appearance's sample, and the oil outlet valve of downside can discharge the oil appearance that has measured breakdown voltage, realizes the processing of two kinds of oil appearance.
The partition device is divided into a left partition board and a right partition board, the two boards are provided with pull arms, a control system and a ZigBee network module are arranged on the inner sides of the pull arms, a terminal can be used for carrying out switch control, and when a partition opening command is sent, the partition boards can be opened from the horizontal state to the inclined state.
The sampling plate consists of a partition plate and sampling grids, a guide rail exists between the sampling plate and the main oil tank, an opening command is sent through terminal control, the length of the sampling plate sliding out of the main oil tank body can be controlled, when the sampling plate is used for placing and taking a paper-covered copper sample, the left sampling plate and the right sampling plate automatically slide out of the main oil tank body, a paper-covered copper sample can be placed in each sampling grid, after the sampling plate is placed, the sampling plate is closed through terminal control, and the sampling plate slides back into the main oil tank body; the sampling plate also plays a role in isolating an oil layer, and when oil samples are required to be sampled in the aging process, the interval of the sampling plate can be controlled to be opened according to the required oil quantity, and a certain oil sample is discharged to above the isolating device, so that the oil sample is sampled.
The sampling grid consists of a grid, two grid doors and two grid buckles, when a sample is required to be placed, the grid doors on the grid are opened, the sample is placed, and after the sample is placed, the grid doors are required to be placed under the grid buckles to finish closing the door; when sampling is needed, the grid doors below the grids are opened, the samples automatically slide down, then the grid doors are closed, and the whole process can be controlled by the terminal to automatically execute grid door opening and closing; when the paper-covered copper sample is required to be taken, the number of sampling grids which are opened can be controlled according to the required sample, a certain paper-covered copper sample is discharged to above the isolating device, and the sampling of the paper-covered copper sample is completed.
The sample platform consists of a disc platform and a cylindrical telescopic cylinder, and after a proper amount of oil sample and a paper-coated copper sample are taken, the isolating device is opened through the terminal and is matched with the raised telescopic cylinder to guide the sample to the sampling platform; after the completion, the telescopic cylinder and the partition device are retracted for the next operation; the telescopic cylinder can automatically lift and retract into the platform according to the command of the control system, so as to play a role in fixing the position of the sample; the telescopic cylinder is made of resin polymer, and the disc platform is made of quartz glass.
The heating device is composed of an infrared heating lamp, the temperature of the oil sample is measured through a surface acoustic wave temperature sensor, and real-time temperature information is sent to the terminal periodically.
The sampling door means that a movable door is arranged at the right lower corner of the oil tank part, and the sampling door can be opened when the detected paper copper-clad sample needs to be processed.
The high-voltage electrode adopts a plate-plate electrode, and the electrode is made of brass materials; the left electrode and the right electrode are all made of brass material, the left side is connected with a high-voltage power supply, and the right side is connected with a ground wire.
The breakdown voltage measuring module internally comprises a power supply, a control circuit, a reversible circuit, a voltage regulator, a boosting test module and a data output module, wherein the data output module is connected with a wireless network center node and is connected with a terminal through a ZigBee network, and the data output module can send a breakdown voltage test result to the terminal and can also send a test instruction to the breakdown voltage test module.
The temperature monitoring module comprises a surface acoustic wave temperature sensor and an antenna thereof, wherein the surface acoustic wave temperature sensor comprises a surface acoustic wave resonator and the antenna; the surface acoustic wave resonator is inlaid on the oil tank, the antenna frame is arranged on the resonator, and the antenna is communicated with the terminal through the ZigBee network, so that oil sample temperature information can be sent to the terminal in real time in the aging process.
The monitoring module for the furfural content in the oil comprises a sampling hose, a liquid chromatograph and a data processing terminal of the liquid chromatograph, wherein the sampling hose is arranged in an oil tank to realize oil sample sampling, the liquid chromatograph is used for measuring the furfural content in the oil, and data are transmitted to the data processing terminal; the liquid chromatograph is provided with a ZigBee module in the data processing terminal, can communicate with the terminal through a ZigBee network, and can send the information of the content of the oil-like furfural to the terminal in real time in the aging process.
The beneficial effects of the invention are as follows: the experimental device can realize wireless data transmission, automatic detection of aging characteristic parameters and automatic real-time transmission of the aging degree of the oil sample, so that the purposes of monitoring the aging process of the oil sample, simplifying the aging experimental steps and saving manpower are realized, and finally, the experimental process is controlled by a remote terminal.
Drawings
FIG. 1 is a diagram of an automatic detection device for the aging degree and parameters of a transformer oil paper insulation system.
FIG. 2 is a diagram of a sampling plate structure of an automatic detection device for the aging degree and parameters of a transformer oil paper insulation system.
FIG. 3 is a front view of a retractable tube of a sample table for an automatic device for detecting the aging degree and parameters of a transformer oil paper insulation system.
Detailed Description
The invention will be further described with reference to the drawings and examples.
The utility model provides a transformer oil paper insulation system ageing degree and parameter automatic checkout device which characterized in that: comprises a main oil tank, a partition device, a sampling plate, a sampling table, a heating device, a high-voltage electrode and the like; the main oil tank is a tank body for an accelerated aging experiment and automatically measuring parameters, and is made of quartz glass, and the middle of the main oil tank is separated by a separation device; the isolating device consists of two pieces of quartz glass, separates the aging experiment of the main oil tank from the aging parameter measurement, and realizes the function of one tank for two purposes; the main oil tank comprises two oil outlet valves, the oil outlet valve at the upper side can realize the sampling of the aged oil samples, the oil outlet valve at the lower side can discharge the oil samples with the breakdown voltage measured, and the two oil samples are treated; the partition device is divided into a left partition plate and a right partition plate, a pull arm is arranged on the two plates, a control system and a ZigBee network module are arranged on the inner side of the pull arm, a terminal can be used for carrying out switch control, and when a partition opening command is sent, the partition plate can be opened from horizontal to inclined; the sampling plate consists of a partition plate and sampling grids, a guide rail exists between the sampling plate and the main oil tank, an opening command is sent through terminal control, the length of the sampling plate sliding out of the main oil tank body can be controlled, when the sampling plate is used for placing and taking a paper-covered copper sample, the left sampling plate and the right sampling plate automatically slide out of the main oil tank body, a paper-covered copper sample can be placed in each sampling grid, after the sampling plate is placed, the sampling plate is closed through terminal control, and the sampling plate slides back into the main oil tank body; the heating device is composed of an infrared heating lamp, measures the temperature of the oil sample through a surface acoustic wave temperature sensor, and periodically sends real-time temperature information to the terminal; the sampling door is characterized in that a movable door is arranged at the right lower corner of the oil tank part, and the sampling door can be opened when a detected paper copper-clad sample needs to be processed; the high-voltage electrode adopts a plate-plate electrode, and the electrode is made of brass materials; the left electrode and the right electrode are all made of brass material, the left side is connected with a high-voltage power supply, and the right side is connected with a ground wire.
When the sample needs to be aged, a command is sent through a terminal, a sampling plate slides out of the main oil tank body, all sampling grids are opened, and a paper-coated copper sample is placed in the sampling grids; placing a paper-coated copper sample, and then placing the sampling plate back into the main oil tank body; the partition device is divided into a left partition plate and a right partition plate, a pull arm is arranged on the two plates, a control system and a ZigBee network module are arranged on the inner side of the pull arm, and when the partition is required to be opened or closed, a terminal transmits an instruction to the pull arm; opening an oil filling valve and an infrared heating lamp, and closing the oil filling valve after an oil sample is added; and the temperature monitoring module and the furfural content monitoring module in the oil send oil sample aging information to the terminal in real time during aging so as to ensure the monitoring strength of the aging degree of the oil sample. The temperature monitoring module comprises a surface acoustic wave temperature sensor and an antenna thereof, wherein the surface acoustic wave temperature sensor comprises a surface acoustic wave resonator and the antenna; the surface acoustic wave resonator is embedded on the oil tank, the antenna frame is arranged on the resonator, and the antenna is communicated with the terminal through the ZigBee network, so that oil sample temperature information can be sent to the terminal in real time in the aging process; the monitoring module for the furfural content in the oil comprises a sampling hose, a liquid chromatograph and a data processing terminal of the liquid chromatograph, wherein the sampling hose is arranged in an oil tank to realize oil sample sampling, the liquid chromatograph is used for measuring the furfural content in the oil, and data are transmitted in the data processing terminal. The liquid chromatograph is provided with a ZigBee module in the data processing terminal, can communicate with the terminal through a ZigBee network, and can send the information of the content of the oil-like furfural to the terminal in real time in the aging process; in addition, in the aging process of the oilpaper insulation system, if the breakdown voltage of the oilpaper is required to be detected in real time, the number of sampling grids which are opened can be controlled according to a required sample, the sampling grid structure is shown as a figure 2, the sampling grid consists of one grid, two grid doors and two grid buckles, when the sample is required to be placed, the grid doors on the grid are opened, the sample is placed, and after the sample is placed, the grid doors are required to be placed under the grid buckles to finish closing the door; when sampling is needed, a grid door below a grid is opened, a sample automatically slides off, then the grid door is closed, the whole process can be automatically executed by a terminal, the grid door releases a certain copper-clad paper sample above a partition device, sampling of the copper-clad paper sample is completed, if the oil quantity above the partition device and below a sampling plate is small, a sufficient oil quantity can be obtained by controlling the opening interval of the sampling plate through the terminal, sampling of an oil sample is completed, then a telescopic cylinder of a sample table is lifted, the telescopic cylinder of the sample table is as shown in fig. 3, the telescopic cylinder can be automatically lifted and retracted into a platform according to a command of a control system, the function of fixing the position of the sample is achieved, the partition device is opened, the sample is guided to the sample table, the partition device is closed, insulation is guaranteed to be good, and the test of breakdown voltage is prepared; the terminal control is used for opening the breakdown voltage test module, wherein the left electrode and the right electrode are made of brass disks, the left side is connected with a high-voltage power supply, and the right side is connected with a ground wire; the breakdown voltage measurement module internally comprises a power supply, a control circuit, a reversible circuit, a voltage regulator, a boosting test module and a data output module, wherein the data output module is connected with a wireless network center node and is connected with a terminal through a ZigBee network, and the data output module can send a breakdown voltage test result to the terminal and can also send a test instruction to the breakdown voltage test module; after the breakdown voltage is measured, data are transmitted into the terminal, the residual oil sample can be discharged from the lower oil outlet valve, and the paper-coated copper sample can be processed through the sampling gate, so that the ageing test and the parameter measurement are completed.
In conclusion, the experimental device can realize wireless data transmission, automatic detection of ageing characteristic parameters and automatic real-time transmission of the ageing degree of the oil sample, so that the monitoring of the ageing process of the oil sample is realized, ageing experimental steps are simplified, manpower is saved, the experimental process is accurately controlled, the adjustment reaction is rapid, the experimental platform can meet the requirements of the simulation and sampling measurement of the insulating electric heating combined ageing fault of the transformer oil paper, and finally the aim of controlling the experimental process by a remote terminal is fulfilled.
Claims (1)
1. The utility model provides a transformer oil paper insulation system ageing degree and parameter automatic checkout device which characterized in that: the device comprises a main oil tank, a partition device, a sampling plate, a sampling grid, a sample table, a heating device, a sampling door, a high-voltage electrode and the like; the detection module comprises a breakdown voltage measurement module, a temperature monitoring module and a furfural content monitoring module in oil;
the main oil tank is a tank body for an accelerated aging experiment and automatically measuring parameters, and is made of quartz glass, and the middle of the main oil tank is separated by a separation device; the isolating device consists of two pieces of quartz glass, separates the aging experiment of the main oil tank from the aging parameter measurement, and realizes the function of one tank for two purposes; the main oil tank comprises two oil outlet valves, the oil outlet valve at the upper side can realize the sampling of the aged oil samples, the oil outlet valve at the lower side can discharge the oil samples with the breakdown voltage measured, and the two oil samples are treated;
the partition device is divided into a left partition plate and a right partition plate, a pull arm is arranged on the two plates, a control system and a ZigBee network module are arranged on the inner side of the pull arm, a terminal can be used for carrying out switch control, and when a partition opening command is sent, the partition plate can be opened from horizontal to inclined;
the sampling plate consists of a partition plate and sampling grids, a guide rail exists between the sampling plate and the main oil tank, an opening command is sent through terminal control, the length of the sampling plate sliding out of the main oil tank body can be controlled, when the sampling plate is used for placing and taking a paper-covered copper sample, the left sampling plate and the right sampling plate automatically slide out of the main oil tank body, a paper-covered copper sample can be placed in each sampling grid, after the sampling plate is placed, the sampling plate is closed through terminal control, and the sampling plate slides back into the main oil tank body; the sampling plate also plays a role of isolating an oil layer, and when oil samples are required to be sampled in the aging process, the interval of the sampling plate can be controlled to be opened according to the required oil quantity, and a certain amount of oil samples are discharged to above the isolating device, so that the oil samples are sampled;
the sampling grid consists of a grid, two grid doors and two grid buckles, when a sample is required to be placed, the grid doors on the grid are opened, the sample is placed, and after the sample is placed, the grid doors are required to be placed under the grid buckles to finish closing the door; when sampling is needed, the grid doors below the grids are opened, the samples automatically slide down, then the grid doors are closed, and the whole process can be controlled by the terminal to automatically execute grid door opening and closing; when a paper-covered copper sample is required to be taken, the number of sampling grids which are opened can be controlled according to the required sample, a certain paper-covered copper sample is discharged to above the partition device, and the sampling of the paper-covered copper sample is completed;
the sample platform consists of a disc platform and a cylindrical telescopic cylinder, and after a proper amount of oil sample and a paper-coated copper sample are taken, the isolating device is opened through the terminal and is matched with the raised telescopic cylinder to guide the sample to the sampling platform; after the completion, the telescopic cylinder and the partition device are retracted for the next operation; the telescopic cylinder can automatically lift and retract into the platform according to the command of the control system, so as to play a role in fixing the position of the sample; the telescopic cylinder is made of resin polymerization material, and the disc platform is made of quartz glass;
the heating device is composed of an infrared heating lamp, measures the temperature of the oil sample through a surface acoustic wave temperature sensor, and periodically sends real-time temperature information to the terminal;
the sampling door is characterized in that a movable door is arranged at the right lower corner of the oil tank part, and the sampling door can be opened when a detected paper copper-clad sample needs to be processed;
the high-voltage electrode adopts a plate-plate electrode, and the electrode is made of brass materials; the left electrode and the right electrode are made of brass material and are connected with a high-voltage power supply in a left side and a ground wire in a right side;
the breakdown voltage measurement module internally comprises a power supply, a control circuit, a reversible circuit, a voltage regulator, a boosting test module and a data output module, wherein the data output module is connected with a wireless network center node and is connected with a terminal through a ZigBee network, and the data output module can send a breakdown voltage test result to the terminal and can also send a test instruction to the breakdown voltage test module;
the temperature monitoring module comprises a surface acoustic wave temperature sensor and an antenna thereof, wherein the surface acoustic wave temperature sensor comprises a surface acoustic wave resonator and the antenna; the surface acoustic wave resonator is embedded on the oil tank, the antenna frame is arranged on the resonator, and the antenna is communicated with the terminal through the ZigBee network, so that oil sample temperature information can be sent to the terminal in real time in the aging process;
the monitoring module for the furfural content in the oil comprises a sampling hose, a liquid chromatograph and a data processing terminal of the liquid chromatograph, wherein the sampling hose is arranged in an oil tank to realize oil sample sampling, the liquid chromatograph is used for measuring the furfural content in the oil, and data are transmitted to the data processing terminal; the liquid chromatograph is provided with a ZigBee module in the data processing terminal, can communicate with the terminal through a ZigBee network, and can send the information of the content of the oil-like furfural to the terminal in real time in the aging process.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310024854.2A CN116047242A (en) | 2023-01-09 | 2023-01-09 | Automatic detection device and method for aging degree and parameters of transformer oil paper insulation system |
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| CN202310024854.2A CN116047242A (en) | 2023-01-09 | 2023-01-09 | Automatic detection device and method for aging degree and parameters of transformer oil paper insulation system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117783758A (en) * | 2024-02-23 | 2024-03-29 | 国网智能电网研究院有限公司 | Device and method for measuring aging and pole-shell space electric field of power capacitor |
| CN117783758B (en) * | 2024-02-23 | 2024-05-10 | 国网智能电网研究院有限公司 | Device and method for measuring aging and pole-shell space electric field of power capacitor |
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2023
- 2023-01-09 CN CN202310024854.2A patent/CN116047242A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117783758A (en) * | 2024-02-23 | 2024-03-29 | 国网智能电网研究院有限公司 | Device and method for measuring aging and pole-shell space electric field of power capacitor |
| CN117783758B (en) * | 2024-02-23 | 2024-05-10 | 国网智能电网研究院有限公司 | Device and method for measuring aging and pole-shell space electric field of power capacitor |
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