CN113358578A - Real-time oil quality monitoring device for power transformer - Google Patents
Real-time oil quality monitoring device for power transformer Download PDFInfo
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- CN113358578A CN113358578A CN202110775015.5A CN202110775015A CN113358578A CN 113358578 A CN113358578 A CN 113358578A CN 202110775015 A CN202110775015 A CN 202110775015A CN 113358578 A CN113358578 A CN 113358578A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N2021/0106—General arrangement of respective parts
- G01N2021/0112—Apparatus in one mechanical, optical or electronic block
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Abstract
The invention discloses a real-time monitoring device for oil quality of a power transformer, and relates to the technical field of electrical equipment monitoring. The real-time oil quality monitoring device for the power transformer comprises a plurality of liquid pools, an infrared light generator and a processor; the liquid pool is used for containing oil and comprises a first window sheet and a second window sheet which are arranged in parallel; wherein the distance between the first window sheet and the second window sheet is a pool distance; the infrared light generator is used for irradiating the oil between the first window sheet and the second window sheet to obtain infrared light beam data; the processor is used for acquiring and analyzing the infrared beam data to obtain oil quality information. The invention can detect and analyze the oil in the transformer, reflect the aging degree of the oil and realize the real-time monitoring of the transformer oil.
Description
Technical Field
The invention relates to the technical field of electrical equipment monitoring, in particular to a real-time monitoring device for oil quality of a power transformer.
Background
The power transformer is the most important core part of the smart grid, and the normal operation of the power transformer is the fundamental guarantee of the safety of the power grid. Transformers are the heart of substations and are not only one of the most important and expensive devices in power systems, but also one of the most accident-prone devices in power systems. The operational reliability of the device directly influences the normal production of the power industry. The quality and the aging degree of the transformer oil directly relate to the safe operation and the service life of the transformer. The transformer oil is inevitably influenced by various factors such as electricity, heat, machinery, environment and the like during operation, and is aged and decomposed, so that the performance of the transformer oil is continuously deteriorated, the insulation state of the transformer is influenced, and hidden troubles are caused to safe and stable operation of the transformer.
At present, the quality monitoring of transformer oil is mainly carried out through conventional pre-testing, namely, oil samples are periodically collected on site and analyzed in a laboratory, and the transformer oil is evaluated, but pre-tested experimental items and experimental periods have great limitations, oil quality experiments are basically detected for three years or even if necessary, the degradation and mutation processes of the oil cannot be found in time, and time and labor are wasted.
Disclosure of Invention
The invention aims to provide a real-time monitoring device for the oil quality of a power transformer, which can detect and analyze oil in the transformer, reflect the aging degree of the oil and realize real-time monitoring of the transformer oil.
In order to achieve the above object, an embodiment of the present invention provides a device for monitoring oil quality of a power transformer in real time, which includes a plurality of liquid pools, an infrared light generator and a processor; the liquid pool is used for containing oil and comprises a first window sheet and a second window sheet which are arranged in parallel; the infrared light generator is used for irradiating the oil between the first window sheet and the second window sheet to obtain infrared light beam data; the processor is used for acquiring and analyzing the infrared beam data to obtain oil quality information.
Preferably, the device further comprises a driving module connected with the liquid pool or the infrared light generator and used for driving the liquid pool or the infrared light generator to translate.
Preferably, the infrared light generating device further comprises an inner box body used for packaging the liquid pool and the infrared light generator.
Preferably, a plurality of dehumidifiers are further disposed inside the inner box body, and are used for dehumidifying air inside the inner box body.
Preferably, the electromagnetic interference shielding box further comprises an outer box body arranged outside the inner box body, and the outer box body and the inner box body jointly form a double-layer shell shielding system for isolating electromagnetic interference.
Preferably, a rain cover is arranged at the top of the outer box body.
Preferably, the bottom of the outer box body is provided with a moving wheel.
Preferably, when the number of the liquid pools is more than 1, the distances between the first window sheet and the second window sheet of different liquid pools are different, and the liquid pools are connected in series.
Preferably, a filter is arranged at the liquid inlet of the liquid pool.
Preferably, the oil quality monitoring system further comprises a display which is in communication connection with the processor and is used for performing visualization processing on the oil quality information.
Compared with the prior art, the invention has the beneficial effects that:
the invention discloses a real-time monitoring device for oil quality of a power transformer, which comprises a plurality of liquid pools, an infrared light generator and a processor, wherein the liquid pools are arranged in the liquid pools; the liquid pool is used for containing oil and comprises a first window sheet and a second window sheet which are arranged in parallel; the infrared light generator is used for irradiating the oil between the first window sheet and the second window sheet to obtain infrared light beam data; the processor is used for acquiring and analyzing the infrared beam data to obtain oil quality information. The invention can detect and analyze the oil in the transformer, reflect the aging degree of the oil and realize the real-time monitoring of the transformer oil.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a real-time monitoring device for oil quality of a power transformer according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an inner box of a real-time monitoring device for oil quality of a power transformer according to an embodiment of the present invention;
fig. 3 is a schematic view of an internal structure of an inner box of a real-time monitoring device for oil quality of a power transformer according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a fluid basin system in a real-time monitoring apparatus for oil quality of a power transformer according to an embodiment of the present invention;
FIG. 5 is a front view of a fluid reservoir system in a real-time monitoring apparatus for oil quality of a power transformer according to an embodiment of the present invention;
fig. 6 is a bottom view of a fluid reservoir system in a real-time monitoring apparatus for oil quality of a power transformer according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a liquid pool structure of a real-time monitoring device for oil quality of a power transformer according to an embodiment of the present invention;
FIG. 8 is a schematic diagram illustrating an explosion of a liquid pool in a real-time monitoring apparatus for oil quality of a power transformer according to an embodiment of the present invention;
FIG. 9 is a front view of a fluid reservoir of a real-time monitoring apparatus for oil quality of a power transformer according to an embodiment of the present invention;
FIG. 10 is a sectional view taken along line A-A of a front view of a fluid reservoir in a real-time monitoring apparatus for oil quality of a power transformer according to an embodiment of the present invention;
FIG. 11 is a front view of a liquid pool in a real-time monitoring device for oil quality of a power transformer according to an embodiment of the present invention;
FIG. 12 is a cross-sectional view taken along the plane B-B of the front view of the liquid pool base in the real-time monitoring device for oil quality of a power transformer according to an embodiment of the present invention;
FIG. 13 is a cross-sectional view taken along the plane C-C of the front view of the liquid pool base in the real-time monitoring device for oil quality of a power transformer according to an embodiment of the present invention;
FIG. 14 is a schematic diagram of a cover plate structure of a liquid tank in a real-time monitoring apparatus for oil quality of a power transformer according to an embodiment of the present invention;
fig. 15 is a schematic view of a punching cushion pad in a real-time monitoring device for oil quality of a power transformer according to an embodiment of the present invention;
fig. 16 is a schematic structural view of a perforated window in a real-time monitoring device for oil quality of a power transformer according to an embodiment of the present invention.
Shown in the figure:
1. the oil-in-place switch comprises an outer box body, 2, an oil inlet, 3, an oil inlet valve, 4, an oil outlet, 5, an oil outlet valve, 6, an inner box body, 7, a display, 8, a liquid pool, 9, an oil pump, 10, a dehumidifying device, 11, a stepping motor driver, 12, a stepping motor, 13, a fixing plate, 14, a mounting plate, 15, a sliding block, 16, a sliding rail, 17, a lead screw, 18, a nut, 19, a liquid pool mounting plate, 20, an in-place switch, 21, an in-place switch collision block, 81, a liquid pool seat, 811, a counter bore, 812, an oil hole, 82, a liquid pool cover plate, 821, a bottom plate, 822, a boss, 83, a pipe joint, 84, a punching cushion, 841, a cushion oil passing hole, 85, a first window sheet, 851, a window sheet oil passing hole, 86, a second window sheet, 87.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
The term "and/or" refers to and includes any and all possible combinations of one or more of the associated listed items.
In the embodiment of the invention, the real-time monitoring device for the oil quality of the power transformer comprises a plurality of liquid pools, an infrared light generator and a processor; the liquid pool is used for containing oil and comprises a first window sheet and a second window sheet which are arranged in parallel; the infrared light generator is used for irradiating the oil between the first window sheet and the second window sheet to obtain infrared light beam data; the processor is used for acquiring and analyzing the infrared beam data to obtain oil quality information.
In a certain embodiment, the real-time monitoring device for the oil quality of the power transformer further comprises a driving module connected with the liquid pool or the infrared light generator and used for driving the liquid pool or the infrared light generator to translate. During monitoring, the liquid pool needs to be moved out of an irradiation area of an infrared light beam of the infrared light generator, the infrared light beam irradiates air, and background data is measured. The oil quality information obtained by monitoring the background data can be more accurate.
In one embodiment, the real-time monitoring device for the oil quality of the power transformer further comprises an inner box body used for packaging the liquid pool and the infrared light generator.
In one embodiment, a plurality of dehumidifiers are further disposed inside the inner box body for dehumidifying air inside the inner box body. The dryness and humidity of the air can affect the monitoring data of the infrared light generator, and in addition, the air is too humid, which can damage the service life of the equipment.
In a certain embodiment, the real-time monitoring device for the oil quality of the power transformer further comprises an outer box body arranged outside the inner box body, and the outer box body and the inner box body jointly form a double-layer shell shielding system for isolating electromagnetic interference.
In a certain embodiment, a rain cover is arranged at the top of an outer box body of the real-time oil quality monitoring device for the power transformer. The dry environment of the equipment can be further maintained.
In one embodiment, the bottom of the outer box body of the real-time oil quality monitoring device for the power transformer is provided with a movable wheel. The movable wheels can be universal wheels, so that the integral movement and the carrying of the real-time oil quality monitoring device of the power transformer are facilitated.
In one embodiment, when the number of the liquid pools in the real-time oil quality monitoring device for the power transformer is larger than 1, the distances between the first window pieces and the second window pieces of different liquid pools are different, and the liquid pools are connected in series. The purpose that sets up like this is monitored many times to oil, prevents to appear because the equipment problem of certain liquid pond, causes the too big condition of monitoring data error.
In a certain embodiment, a filter is arranged at the liquid inlet of a liquid pool in the real-time monitoring device for the oil quality of the power transformer, so that the transformer oil is filtered, and the monitoring result is prevented from being influenced by impurities.
In one embodiment, the real-time monitoring device for the oil quality of the power transformer further comprises a display which is in communication connection with the processor and is used for performing visual processing on the oil quality information. Specifically, the display is an industrial personal computer display and can display real-time monitoring data information.
Fig. 1-2 are schematic structural diagrams of a power transformer oil quality real-time monitoring device according to an embodiment of the present invention, which includes an outer tank 1, an oil inlet 2, an oil inlet valve 3, an oil outlet 4, an oil outlet valve 5, and an inner tank 6.
The outer box 1 is made of stainless steel due to the possibility of being wetted by rainwater, so that the equipment is more durable.
Rain-proof cover is equipped with at 1 top of outer box, openly is equipped with the switch door, and the switch door is equipped with the sealing strip all around, plays rain-proof effect, and outer box sets to rain-proof structure, can adapt to outdoor environment.
The bottom of the outer box body is provided with 4 moving wheels which are universal wheels and used for moving and carrying the outer box body 1.
Interior box 6 is the airtight box that the metal was made, and display 7 is equipped with in the front of interior box 6, and this display is industrial computer display, can show real time monitoring's data information, and it has the display mouth to open on the switch door of outer box 1, can observe display 7 through the display mouth.
Referring to fig. 3, two dehumidifying devices 10 are further installed in the inner box 6, the dehumidifying devices 10 dehumidify air inside the inner box 6, so that a monitoring result is accurate, and the two dehumidifying devices are mainly arranged to prevent one dehumidifying device 10 from malfunctioning.
Because this monitoring device places in strong electromagnetic environment for a long time, through setting up outer box 1 and interior box 6, can play double-deck shell shielding effect, prevent the interference of strong electromagnetism to inside monitoring element.
Interior box 6 is equipped with liquid pool system, infrared generator and oil pump 9, the side of outer box 1 is equipped with oil inlet 2, inlet valve 3, oil drain port 4 and oil drain valve 5, all be equipped with the quick connector of self sealss on oil inlet 2 and the oil drain port 4, the quick connector of oil inlet 2 is through advancing the fluid intercommunication in oil pipe and the transformer, the quick connector on the oil drain port 4 is through the fluid intercommunication in oil pipe and the transformer of arranging, it strains to advance to be equipped with oil on the oil pipe, play the filter effect to transformer oil, prevent that impurity from influencing the monitoring result.
The oil inlet 2 is communicated with the inlet of the oil pump 9 after being communicated with the oil inlet valve 3, the outlet of the oil pump 9 is communicated with the liquid tank system, oil discharged by the liquid tank system is communicated with an oil discharge port after passing through the oil discharge valve 5, and two pipe joints for communicating an inner pipeline and an outer pipeline are arranged on the inner box body 6. The oil pump 9 is a precision gear metering pump, and the oil pump 9 is a polyether ether ketone (PEEK) pump, or other gear pumps which do not generate acetylene can be adopted.
Referring to fig. 4-6, the liquid pool system comprises an installation plate 14 fixed on the upper top surface inside the fixed plate 13, two parallel slide rails 16 are installed on the lower end surface of the installation plate 14, a slide block 15 is installed on each slide rail 16, two sets of lead screw assemblies are installed on the lower end surface of the installation plate 14, and a screw 18 of each lead screw assembly is connected with the lower end surface of the slide block 15 through a bolt.
A lead screw 17 of the lead screw component is driven by a stepping motor 12 which is fixed on the side surface of the mounting plate 14, and two stepping motor drivers 11 are also arranged in the inner box body 6.
Each slide block 15 is provided with an in-place switch collision block 21, the mounting plate 14 is provided with an in-place switch 20, and the counting of the stepping motor 12 is cleared and reset each time the slide block 15 moves to the position of the in-place switch 20.
A liquid pool mounting plate 19 is arranged below each nut 18, the liquid pool mounting plates 19 are connected with the liquid pools 8 through bolts, and the two liquid pools 8 are the same in height and can independently move transversely.
Referring to fig. 7-16, the liquid pool 8 includes a square liquid pool base 81, a circular counter bore 811 (as shown in fig. 12-13) is opened on the front surface of the liquid pool base 81, a through hole is opened on the bottom surface of the counter bore 811, the through hole is a horizontal long round hole, two oil holes 812 are opened on the bottom surface of the counter bore 811 (as shown in fig. 14), the two oil holes 812 are respectively located on the upper and lower sides of the through hole, the oil holes 812 are communicated to the pipe joints 83 on the side surface of the liquid pool base 81, and the two pipe joints 83 are respectively used as a liquid pool inlet and a liquid pool outlet.
The counter bore 811 of the liquid pool seat 81 is internally and externally provided with the punching cushion 84 in sequence, the first window sheet 85, the pool stroke pad 87, the second window sheet 86 and the cushion pad 88, the opening of the counter bore 811 is provided with the liquid pool cover plate 82, the liquid pool cover plate 82 comprises a square bottom plate 821, a cylindrical boss 822 is protruded on one side of the bottom plate 821, the diameter of the boss 822 is the same as the aperture of the counter bore 811, the bottom plate 821 is connected with the end face of the liquid pool seat 81 through a bolt, the boss 822 is inserted into the counter bore 811 to punch the cushion 84, the first window sheet 85, the pool stroke pad 87, the second window sheet 86 and the cushion pad 88 are tightly pressed inside the counter bore 811, and the liquid pool cover plate 82 is provided with a cover plate which is the same as the cover plate passing through the hole on the liquid pool seat 81.
The buffer pad 88 is an annular pad and is arranged between the boss 822 and the second window sheet 86 to play a role of buffer sealing, the second window sheet 86 is a round transparent sheet, the appearance of the second window sheet 86 is the same as that of the first window sheet 85, an annular cell path pad 87 is arranged between the second window sheet 86 and the first window sheet 85, the precision of the thickness of the cell path pad 87 is high, the precision is used for controlling the distance between the second window sheet 86 and the first window sheet 85, the thickness of the cell path pads 87 of the two liquid cells 8 is different, and therefore the cell paths of the two liquid cells 8 are different. Wherein the pool distance is the distance between the first window sheet and the second window sheet.
The punching buffer 84 is positioned between the first window sheet 85 and the bottom of the counter bore 811, the middle of the punching buffer 84 is provided with a buffer passing hole which is the same as the passing hole on the liquid pool seat 81, the punching buffer 84 is provided with a buffer passing oil hole 841 which corresponds to and is communicated with the counter bore 811, the first window sheet 85 is provided with a window passing oil hole 851 which corresponds to and is communicated with the buffer passing oil hole 841, thereby the counter bore 811 is communicated between the second window sheet 86 and the first window sheet 85, and the oil flows into the space between the second window sheet 86 and the first window sheet 85 from one pipe joint 83 and then flows out through the other pipe joint 83.
The oil output by the oil pump 9 is communicated with the pipe joint 83 of the first liquid pool 8, flows through the second window sheet 86 and the first window sheet 85, then flows out through the other pipe joint 83, enters the pipe joint 83 of the second liquid pool 8, flows through the second window sheet 86 and the first window sheet 85 of the second liquid pool, and then flows out through the second liquid pool 8, so that the two liquid pools 8 are connected in series.
An infrared light generator is further mounted below the fixed plate 13, infrared light beams emitted by the infrared light generator penetrate through the liquid pool 8, penetrate through oil between the second window sheet 86 and the first window sheet 85, and then the infrared light beams penetrating through the oil are analyzed, so that real-time analysis and monitoring are conducted on components in the oil.
By performing infrared light analysis on the oil in any single liquid pool 8 or two liquid pools 8, 12 components in the oil can be analyzed.
The real-time oil quality monitoring device for the power transformer provided by the embodiment of the invention comprises the following components in the using process:
during monitoring, an oil sample is fed through the oil pump 9, the liquid pool is moved out of an irradiation area of the infrared light beam, the infrared light beam irradiates air, and background data are measured. And moving the liquid pool to an infrared beam irradiation area, enabling the infrared beam to pass through the through hole of the liquid pool, enabling the infrared beam to pass through the second window sheet 86, the first window sheet 85 and the oil liquid between the first window sheet and the second window sheet, measuring the data of the infrared beam passing through the liquid pool, calculating the data, displaying the data in a list, storing the data, and performing the next measurement after delaying for a period of time.
If the number of the liquid pools is more than 1, for example, in the embodiment, two liquid pools, namely a first liquid pool and a second liquid pool are included, if sample data of corresponding pools of the first liquid pool and the second liquid pool are required to be measured, the first liquid pool and the second liquid pool are moved to an infrared beam irradiation area, infrared beams pass through the passing holes of the first liquid pool and the second liquid pool, the infrared beams pass through the second window sheet 86 and the first window sheet 85 of the first liquid pool and the second liquid pool at the moment, data of the infrared beams passing at the moment are measured, data are calculated and displayed in a list, the data are stored, and next measurement is performed after a period of time is delayed.
According to the invention, the transformer oil in the transformer is pumped out for real-time monitoring, and the pumped transformer oil is conveyed back to the transformer, so that the real-time monitoring of the transformer oil can be realized, the insulation state of the transformer is ensured, and the safety and stability of the transformer are improved.
The outer box body is set to be a rainproof structure, the outdoor environment can be adapted, the inner box body is sealed, the dehumidification device has a dehumidification effect on air in the inner box body, so that a monitoring result is accurate, and strong electromagnetism is prevented from interfering internal monitoring elements through the shielding effect of the double-layer shells of the outer box body and the inner box body.
The infrared analysis device can analyze the components in the oil liquid by performing infrared analysis on the oil liquid in any single liquid pool or two liquid pools.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (10)
1. A real-time monitoring device for oil quality of a power transformer is characterized by comprising a plurality of liquid pools, an infrared light generator and a processor;
the liquid pool is used for containing oil and comprises a first window sheet and a second window sheet which are arranged in parallel;
the infrared light generator is used for irradiating the oil between the first window sheet and the second window sheet to obtain infrared light beam data;
the processor is used for acquiring and analyzing the infrared beam data to obtain oil quality information.
2. The real-time oil quality monitoring device for the power transformer according to claim 1, further comprising a driving module connected to the liquid pool or the infrared light generator for driving the liquid pool or the infrared light generator to translate.
3. The real-time monitoring device for the oil quality of the power transformer according to claim 1, further comprising an inner box body for encapsulating the liquid pool and the infrared light generator.
4. The real-time oil quality monitoring device for the power transformer as claimed in claim 3, wherein a plurality of dehumidifiers are further arranged inside the inner box body for dehumidifying air inside the inner box body.
5. The real-time oil quality monitoring device for the power transformer of claim 3, further comprising an outer box disposed outside the inner box, wherein the outer box and the inner box together form a double-casing shielding system for isolating electromagnetic interference.
6. The real-time oil quality monitoring device for the power transformer according to claim 5, wherein a rain cover is arranged on the top of the outer box.
7. The real-time monitoring device for oil quality of power transformer according to claim 5, wherein the bottom of the outer box is provided with a moving wheel.
8. The real-time monitoring device for oil quality of power transformer according to claim 1, wherein when the number of said liquid pools is greater than 1, the distance between the first window and the second window of different liquid pools is different, and the liquid pools are connected in series.
9. The real-time monitoring device for the oil quality of the power transformer according to claim 1, wherein a filter is arranged at an inlet of the liquid pool.
10. The real-time monitoring device for the oil quality of the power transformer according to claim 1, further comprising a display communicatively connected to the processor for visually processing the oil quality information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110775015.5A CN113358578A (en) | 2021-07-08 | 2021-07-08 | Real-time oil quality monitoring device for power transformer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110775015.5A CN113358578A (en) | 2021-07-08 | 2021-07-08 | Real-time oil quality monitoring device for power transformer |
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| CN113358578A true CN113358578A (en) | 2021-09-07 |
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| CN202110775015.5A Pending CN113358578A (en) | 2021-07-08 | 2021-07-08 | Real-time oil quality monitoring device for power transformer |
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| CN112924651A (en) * | 2020-12-30 | 2021-06-08 | 广东电网有限责任公司电力科学研究院 | Method, device and equipment for detecting aging degree of transformer oil |
| CN112915939A (en) * | 2020-12-30 | 2021-06-08 | 广东电网有限责任公司电力科学研究院 | Quick aging reactor for transformer oil |
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- 2021-07-08 CN CN202110775015.5A patent/CN113358578A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103472019A (en) * | 2013-09-30 | 2013-12-25 | 重庆大学 | Spectrographic method for fast detecting pesticide residues |
| CN104165698A (en) * | 2014-08-21 | 2014-11-26 | 国家电网公司 | Substation power transformer overheating fault monitoring system based on thermal infrared imager |
| CN105136663A (en) * | 2015-08-10 | 2015-12-09 | 苏州优谱德精密仪器科技有限公司 | Chemical raw material rapid detection device |
| CN208448800U (en) * | 2018-07-19 | 2019-02-01 | 广东电网有限责任公司 | A kind of scene separates the filter device of fiber grain in transformer oil |
| CN111175232A (en) * | 2020-01-19 | 2020-05-19 | 中国科学院电工研究所 | Photoacoustic spectroscopy device for detecting dissolved gas in transformer oil |
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Application publication date: 20210907 |