CN112285510B - Transformer discharge experimental apparatus - Google Patents
Transformer discharge experimental apparatus Download PDFInfo
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- CN112285510B CN112285510B CN202011370234.7A CN202011370234A CN112285510B CN 112285510 B CN112285510 B CN 112285510B CN 202011370234 A CN202011370234 A CN 202011370234A CN 112285510 B CN112285510 B CN 112285510B
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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
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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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/62—Testing of transformers
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- Housings And Mounting Of Transformers (AREA)
Abstract
The invention provides a transformer discharge experimental device, which comprises a first shell, a second shell, a discharge device, a heating device, a circulating device and a detection device, wherein the discharge device comprises a rotating motor, a first main bevel gear, a first slave bevel gear, a screw rod and a moving strip, the first main bevel gear is meshed with the first slave bevel gear, the moving strip is in threaded connection with the screw rod, a plurality of first conducting rods are arranged on the moving strip, the tail ends of the first conducting rods are respectively provided with a first electrode, the bottom of an inner cavity is provided with a second conducting rod, one end of the second conducting rod is provided with a plurality of conducting support rods, a second electrode is arranged on each conducting support rod, the other end of the second conducting rod extends to the inner cavity, the second slave bevel gear is arranged on the second conducting rod, and the second slave bevel gear is meshed with the second main bevel gear; the heating device is used for heating the insulating oil; the circulating device realizes the circulating flow of the insulating oil; the detection device is used for analyzing the result of the insulating oil discharge experiment.
Description
Technical Field
The invention relates to the technical field of transformers, in particular to a transformer discharge experiment device.
Background
The transformer is one of core equipment of a power system, and once a fault occurs, large-area and long-time power failure in one area can be caused, so that huge loss is caused to economy, and great inconvenience is caused to life. The large power transformer is mostly of an oil-immersed structure, main insulating media of the large power transformer are insulating oil and insulating paper, the insulating oil and the insulating paper mainly play roles in insulating and radiating the inside of the transformer, the insulating paper plays roles in insulating and supporting, and an oil paper insulating system is an important factor for ensuring the safe operation of the transformer. At present, fault discharge analysis of a transformer is usually carried out on a real transformer, and the fault discharge condition of the transformer under various conditions cannot be well simulated.
Disclosure of Invention
The invention aims to provide a transformer discharge experiment device which can simulate the fault discharge condition of a transformer under various conditions.
The invention is realized by the following technical scheme: a transformer discharge experiment device comprises a first shell, a second shell, a discharge device, a heating device, a circulating device and a detection device, wherein the outer wall of the second shell is fixedly connected with the inner wall of the first shell, an inner cavity for containing insulating oil is formed in the second shell, the discharge device comprises a rotary motor, a first main bevel gear, a first slave bevel gear, a screw rod and a moving strip, the first main bevel gear is arranged on two rotary shafts of the rotary motor, the first main bevel gear is meshed with the first slave bevel gear, the first slave bevel gear is fixed at the end part of the screw rod, the moving strip is in threaded connection with the screw rod, a plurality of first conductive rods are arranged on the moving strip, a virtual equilateral triangle is formed between the first conductive rods, the tail ends of the first conductive rods are respectively provided with a first electrode, the bottom of the inner cavity is provided with a second conductive rod, the second conductive rod is rotatably connected with the bottom of the inner cavity through a rotary sleeve, one end of the second conductive rod is provided with a plurality of conductive support rods, a second electrode is arranged on the conductive support rod, the other end of the second conductive rod extends to the inner cavity, and the second conductive rod is meshed with the second bevel gear;
the heating device is used for heating the insulating oil;
the circulating device realizes the circulating flow of the insulating oil;
the detection device is used for analyzing the result of the insulating oil discharge experiment.
Preferably, the second conducting rod is provided with at least three conducting support rods, and a virtual triangle corresponding to the first conducting rod is formed between the conducting support rods.
Preferably, the circulation device includes: the electromagnetic valve comprises a first electromagnetic valve, a second electromagnetic valve, a circulating pipe and a circulating pump, wherein two ends of the circulating pipe are communicated with the second shell, the first electromagnetic valve and the second electromagnetic valve are respectively arranged at the communicated positions, and the circulating pump is arranged on the circulating pipe.
Preferably, the heating device includes: the heating lamp penetrates into the through passage, and an air outlet of the fan is communicated with the through passage
Preferably, the first electrode and the second electrode each include one or more of a pin electrode, a ball electrode, and a disc electrode, the pin electrode is disposed on at least one of the first conductive rods, the ball electrode is disposed on at least one of the first conductive rods, and the disc electrode is disposed on at least one of the first conductive rods.
Preferably, the device comprises an oil port, an oil pipe and a hand valve, the oil port is formed in the bottom of the second shell and communicated with the oil pipe, the oil pipe extends to the outside of the first shell, and the hand valve is arranged on the oil pipe.
Preferably, the second main bevel gear is connected with a handle connecting rod, and an insulating handle is arranged at the end part of the handle connecting rod penetrating out of the first shell.
Preferably, the detection device includes: the oil outlet pipe is connected between the oil material monitoring outlet and the detection device body, and a third electromagnetic valve is connected to the oil outlet pipe;
the oil inlet pipe is connected between the oil monitoring inlet and the detection device body, and the oil inlet pipe is connected with a fourth electromagnetic valve;
the detection device body comprises an oil chromatography on-line monitoring device.
Compared with the prior art, the invention has the following beneficial effects:
according to the transformer discharge experiment device provided by the invention, the output shaft of the rotating motor drives the first main bevel gear to rotate, the first main bevel gear is meshed with the first slave bevel gear, the first slave bevel gear drives the screw rod to rotate, the screw rod further drives the moving strip to move up and down, the moving strip drives the first electrode to be far away from/close to the second electrode, the electrode spacing is changed, and discharge energy under different electric field unevenness can be simulated;
the second main bevel gear is rotated to drive the second auxiliary bevel gear to rotate, and finally the second conducting rod is rotated, so that the first electrode is matched with different second electrodes to generate partial discharge, and the discharge conditions under different conditions can be simulated.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only preferred embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a structural diagram of a transformer discharge experiment apparatus according to an embodiment of the present invention;
fig. 2 is a structural diagram of a transformer discharge experiment apparatus according to another embodiment of the present invention.
In the figure, 1 a first shell, 2 a second shell, 3 a rotating motor, 4 a first main bevel gear, 5 a first auxiliary bevel gear, 6 a screw rod, 7 moving strip, 8 a first conducting rod, 9a second conducting rod, 9a conducting support rod, 10a first electrode, 10a second electrode, 11 a second main bevel gear, 12 a second auxiliary bevel gear, 13 a first electromagnetic valve, 14 a second electromagnetic valve, 15 circulating pipe, 16 circulating pump, 17 through channel, 18 heating lamp, 19 fan, 20 oil outlet pipe, 21 oil monitoring outlet, 22 oil inlet pipe, 23 oil monitoring inlet, 24 third electromagnetic valve, 25 fourth electromagnetic valve, 26 oil chromatography online monitoring device, 27 connecting plate, 28 handle connecting rod, 29 insulating handle, 30 oil port, 31 oil pipe and 32 hand valve.
Detailed Description
In order to better understand the technical content of the invention, specific embodiments are provided below, and the invention is further described with reference to the accompanying drawings.
Referring to fig. 1, a transformer discharge experiment device comprises a first shell 1, a second shell 2, a discharge device, a heating device, a circulation device, and a detection device, wherein an outer wall of the second shell 2 is fixedly connected with an inner wall of the first shell 1, an inner cavity for containing insulating oil is arranged inside the second shell 2, the discharge device comprises a rotating motor 3, a first main bevel gear 4, a first slave bevel gear 5, a screw rod 6, and a moving bar 7, the first main bevel gear 4 is arranged on two rotating shafts of the rotating motor 3, the first main bevel gear 4 is engaged with the first slave bevel gear 5, the first slave bevel gear 5 is fixed at an end of the screw rod 6, the movable strip 7 is in threaded connection with the screw 6, a plurality of first conducting rods 8 are arranged on the movable strip 7, a virtual equilateral triangle is formed between the first conducting rods 8, first electrodes 10 are respectively arranged at the tail ends of the first conducting rods 8, a second conducting rod 9 is arranged at the bottom of the inner cavity, the second conducting rod 9 is in rotary connection with the bottom of the inner cavity through a rotating sleeve (not marked), a plurality of conducting support rods 9a are arranged at one end of the second conducting rod 9, a second electrode 10a is arranged on each conducting support rod 9a, the other end of the second conducting rod 9 extends to the inner cavity, a second slave bevel gear 12 is arranged on the second conducting rod 9, and the second slave bevel gear 12 is meshed with a second master bevel gear 11;
the heating device is used for heating the insulating oil;
the circulating device realizes the circulating flow of the insulating oil;
the detection device is used for analyzing the result of the insulating oil discharge experiment.
The invention relates to a transformer discharge experiment device, which is used for carrying out discharge experiments on a transformer, can simulate discharge faults in the transformer and local overheating faults in the transformer, and is characterized in that an inner cavity is filled with insulating oil, a discharge device of the transformer is used for discharging the insulating oil to simulate the discharge faults in the transformer, a heating device is used for heating the insulating oil to simulate the local overheating faults in the transformer, and a circulating device realizes the circulating flow of the insulating oil, so that gas generated by the discharge faults is more uniformly dissolved in the insulating oil; the detection device is used for analyzing the result of the insulating oil discharge experiment.
In a preferred embodiment, a transformer discharge experiment device comprises a first shell 1 and a second shell 2, and the first shell 1 and the second shell 2 are arranged to improve the safety of the whole device and effectively protect elements such as a discharge device, a heating device, a circulating device, a detection device and the like.
In a preferred embodiment, the discharge device comprises: the high-voltage power supply device comprises a rotary motor 3, a first main bevel gear 4, a first slave bevel gear 5, a screw 6, a moving bar 7, a first conducting rod 8, a second conducting rod 9, a second electrode 10a, a second slave bevel gear 12 and a second main bevel gear 11 which are meshed, when the high-voltage power supply device is used, the power supply device such as a high-voltage power supply is connected into the first conducting rod 8 and the second conducting rod 9, so that the first electrode 10 and the second electrode 10a are respectively electrified, partial discharge is generated by matching the first electrode 10 and the second electrode 10a, and different electrical faults can be simulated by applying different forms of voltage;
in another preferred embodiment, the distance between the first electrode 10 and the second electrode 10a can be adjusted by rotating the first main bevel gear 4 through the output shaft of the rotating electrical machine 3, the first main bevel gear 4 is engaged with the first slave bevel gear 5, so that the first slave bevel gear 5 drives the screw 6 to rotate, the screw 6 is rotatably connected with the connecting plate 27 disposed on the first housing 1, the screw 6 drives the moving bar 7 to move up/down, the moving bar 7 drives the first electrode 10 to move away from/close to the second electrode 10a, and the electrode distance is changed to simulate the discharge energy under different electric field non-uniformities.
In a preferred embodiment, the first electrode 10 cooperates with a different second electrode 10a to generate partial discharge, in which a second slave bevel gear 12 is disposed on the second conducting rod 9, the second slave bevel gear 12 meshes with a second master bevel gear 11, the second master bevel gear 11 is rotatably connected to the first housing 1, and the second slave bevel gear 12 is driven to rotate by rotating the second master bevel gear 11, so that the second conducting rod 9 is finally rotated, and the first electrode 10 cooperates with the different second electrode 10a to generate partial discharge.
Further, in a preferred embodiment, at least three conductive struts 9a are disposed on the second conductive rod 9, a virtual triangle corresponding to the first conductive rod is formed between the conductive struts 9a, and by rotating the second conductive rod 9, different conductive struts 9a cooperate with the first electrode 10 to generate partial discharge.
Further, the first electrode 10 and the second electrode 10a comprise one or more of a needle electrode, a ball electrode and a disk electrode.
In a possible technical solution, the first electrode 10 on one first conducting rod 8 is a ball electrode, the first electrode 10 on one conducting rod is a needle electrode which can simulate point discharge, the first electrode 10 on one first conducting rod 8 is a disk electrode, the second electrode 10a on one conducting strut 9a is fixed with an insulating material, and the second electrode 10a on one conducting strut 9a is fixed with a mixture of the insulating material and a metal material;
by rotating the second conducting rod 9, the discharge tests of the ball electrode, the disc electrode/the needle electrode/the ball electrode, the insulating material + the disc electrode + the metal foreign matters can be simulated respectively;
the discharge tests of the needle electrode, the disc electrode, the needle electrode, the ball electrode, the insulating material and the disc electrode can be simulated respectively;
the discharge test of a disc electrode, a disc electrode/needle electrode/ball electrode, an insulating material + the disc electrode, the insulating material + the disc electrode + metal foreign matters can be simulated respectively.
Further, the second main bevel gear 11 is connected with a handle connecting rod 28, an insulating handle 29 is arranged at the end of the handle connecting rod 28 penetrating through the first shell 1, and an operator can drive the second main bevel gear 11 to rotate through the insulating handle 29, so that the second conducting rod 9 can rotate.
Further, in a preferred embodiment, the circulating means includes: the device comprises a first electromagnetic valve 13, a second electromagnetic valve 14, a circulating pipe 15 and a circulating pump 16, wherein two ends of the circulating pipe 15 are communicated with the second shell 2, the first electromagnetic valve 13 and the second electromagnetic valve 14 are respectively arranged at the communicated positions, and the circulating pump 16 is arranged on the circulating pipe 15;
by opening the first solenoid valve 13, the second solenoid valve 14 and the circulation pump 16, under the action of the circulation pump 16, the insulation oil in the inner cavity of the second housing 2 flows into the circulation pipe 15 through the first solenoid valve 13 and flows into the inner cavity from the circulation pipe 15 through the second solenoid valve 14, thereby realizing the circulation of the insulation oil.
Further, in a preferred embodiment, the heating device includes: the heating lamp 18 penetrates through the through channel 17 of the second shell 2 twice, the heating lamp 18 and the fan 19, the through channel 17 is in a shape of a mouth, the heating lamp 18 penetrates into the through channel 17, and an air outlet of the fan 19 is communicated with the through channel 17;
the heating lamp 18 heats the inside of the through channel 17, the fan 19 flows hot air, the through channel 17 is heated integrally, and finally the insulating oil in the inner cavity is heated.
Further, in a preferred embodiment, the detecting device includes: the oil outlet pipe 20 is connected between the oil material monitoring outlet 21 and the detection device body, and the oil outlet pipe 20 is connected with a third electromagnetic valve 24;
the oil inlet pipe 22 is connected between the oil monitoring inlet 23 and the detection device body, and the fourth electromagnetic valve 25 is connected to the oil inlet pipe 22;
the detection device body comprises an oil chromatography on-line monitoring device 26.
In the experiment, the third electromagnetic valve 24 and the fourth electromagnetic valve 25 are opened, the insulating oil flows out from the oil monitoring outlet 21, flows into the oil chromatography online monitoring device 26 through the oil outlet pipe 20, and then flows back into the inner cavity through the oil inlet pipe 22 and the oil monitoring inlet 23, and the oil chromatography online monitoring device 26 can monitor the gas in the flowing insulating oil.
This embodiment is through setting up oil chromatogram on-line monitoring device 26, can realize the on-line monitoring of dissolved gas in the insulating oil, and the trend of change of dissolved gas in the insulating oil under the inside electric heat trouble of ability real-time supervision transformer to do benefit to the better development law of mastering dissolved gas in the insulating oil behind the transformer trouble.
Further, in a preferred embodiment, one side of the first and second housings 1 and 2 is made of a transparent material, and when performing the discharge experiment, an operator can visually observe the performance of the discharge experiment.
Referring to fig. 2, in a preferred embodiment, the transformer discharge experiment apparatus further includes a taking and placing device, the taking and placing device includes an oil port 30, an oil pipe 31, and a hand valve 32, the oil port 30 is disposed at the bottom of the second housing 2, the oil port 30 is communicated with the oil pipe 31, the oil pipe 31 extends to the outside of the first housing 1, the hand valve 32 is disposed on the oil pipe 31, and when the hand valve 32 is used, the insulating oil can be injected into the inner cavity through the oil pipe 31 by opening the hand valve 32; similarly, the insulating oil can be discharged from the inner cavity by opening the hand valve 32.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. A transformer discharge experimental device is characterized by comprising a first shell, a second shell, a discharge device, a heating device, a circulating device and a detection device, wherein the outer wall of the second shell is fixedly connected with the inner wall of the first shell, an inner cavity for containing insulating oil is formed in the second shell, the discharge device comprises a rotating motor, a first main bevel gear, a first secondary bevel gear, a screw rod and a moving strip, the first main bevel gear is arranged on two rotating shafts of the rotating motor, the first main bevel gear is meshed with the first secondary bevel gear, the first secondary bevel gear is fixed at the end of the screw rod, the moving strip is in threaded connection with the screw rod, three first conductive rods are arranged on the moving strip, a virtual equilateral triangle is formed between the first conductive rods, first electrodes are respectively arranged at the tail ends of the first conductive rods, a second conductive rod is arranged at the bottom of the inner cavity, the second conductive rod is rotatably connected with the bottom of the inner cavity through a rotating sleeve, three conductive support rods are arranged at one end of the second conductive rod, a metal conductive rod corresponding to the first conductive rod is also formed between the conductive rods, a second conductive rod is fixedly meshed with a metal material on the second conductive rod, one of the second conductive rod, and a second conductive rod is fixed on the second conductive rod, and a metal material is arranged on the second conductive rod, and a second conductive rod is fixed on the second conductive rod;
the heating device is used for heating the insulating oil;
the circulating device realizes the circulating flow of the insulating oil;
the detection device is used for analyzing the result of the insulating oil discharge experiment.
2. The transformer discharge experimental device according to claim 1, wherein the circulating device comprises: the electromagnetic valve comprises a first electromagnetic valve, a second electromagnetic valve, a circulating pipe and a circulating pump, wherein two ends of the circulating pipe are communicated with the second shell, the first electromagnetic valve and the second electromagnetic valve are respectively arranged at the communicated positions, and the circulating pump is arranged on the circulating pipe.
3. The transformer discharge experiment device according to claim 1, wherein the heating device comprises: the heating lamp penetrates into the through passage, and an air outlet of the fan is communicated with the through passage.
4. The transformer discharge experimental apparatus according to claim 1, wherein the first electrode and the second electrode each comprise one or more of a pin electrode, a ball electrode and a disc electrode, one of the first conductive rods is provided with the pin electrode, one of the first conductive rods is provided with the ball electrode, and one of the first conductive rods is provided with the disc electrode.
5. The transformer discharge experiment device according to claim 1, further comprising a taking and placing device, wherein the taking and placing device comprises an oil port, an oil pipe and a hand valve, the oil port is arranged at the bottom of the second shell, the oil port is communicated with the oil pipe, the oil pipe extends to the outside of the first shell, and the hand valve is arranged on the oil pipe.
6. The transformer discharge experiment device according to claim 1, wherein one side of the first and second housings is made of a transparent material.
7. The transformer discharge experiment device according to claim 1, wherein the second main bevel gear is connected with a handle connecting rod, and an insulating handle is arranged on the end of the handle connecting rod, which penetrates out of the first shell.
8. The transformer discharge experiment device according to claim 1, wherein the detection device comprises: the oil outlet pipe is connected between the oil material monitoring outlet and the detection device body, and a third electromagnetic valve is connected to the oil outlet pipe;
the oil inlet pipe is connected between the oil monitoring inlet and the detection device body, and a fourth electromagnetic valve is connected to the oil inlet pipe;
the detection device body comprises an oil chromatography on-line monitoring device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011370234.7A CN112285510B (en) | 2020-11-30 | 2020-11-30 | Transformer discharge experimental apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011370234.7A CN112285510B (en) | 2020-11-30 | 2020-11-30 | Transformer discharge experimental apparatus |
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| CN112285510A CN112285510A (en) | 2021-01-29 |
| CN112285510B true CN112285510B (en) | 2022-11-01 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113406449A (en) * | 2021-06-16 | 2021-09-17 | 南方电网科学研究院有限责任公司 | Plant insulating oil test device |
| CN115453284A (en) * | 2022-08-30 | 2022-12-09 | 国网福建省电力有限公司电力科学研究院 | Main transformer online chromatographic detection discharge fault simulation device and method |
| CN117805689B (en) * | 2024-02-27 | 2024-06-21 | 山东泰莱电气股份有限公司 | Transformer internal fault simulation experiment device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11354331A (en) * | 1998-06-09 | 1999-12-24 | Mitsubishi Electric Corp | Insulation liquid evaluating device |
| CN105676093B (en) * | 2016-04-13 | 2019-04-30 | 云南电网有限责任公司电力科学研究院 | A kind of analogue transformer device |
| CN109188213A (en) * | 2018-08-16 | 2019-01-11 | 西安西电变压器有限责任公司 | A kind of power transformer interior fault imitative experimental appliance |
| CN210091875U (en) * | 2019-04-03 | 2020-02-18 | 南安知风舟工业设计有限公司 | Oil-immersed transformer |
| CN110501588A (en) * | 2019-08-12 | 2019-11-26 | 国网山东综合能源服务有限公司 | Natural esters Insulation Oil Transformer electric heating combines fault simulation experiment porch and method |
| CN111707711A (en) * | 2020-06-28 | 2020-09-25 | 西安西电变压器有限责任公司 | Simulation method and device for detecting dissolved gas in oil under insulating oil electrical fault |
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