CN202512205U - Paper oil insulation fault simulation model of inverted current transformer - Google Patents
Paper oil insulation fault simulation model of inverted current transformer Download PDFInfo
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- CN202512205U CN202512205U CN2012201818201U CN201220181820U CN202512205U CN 202512205 U CN202512205 U CN 202512205U CN 2012201818201 U CN2012201818201 U CN 2012201818201U CN 201220181820 U CN201220181820 U CN 201220181820U CN 202512205 U CN202512205 U CN 202512205U
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Abstract
The utility model provides a paper oil insulation fault simulation model of an inverted current transformer, which aims at solving the problems that the interior of the existing inverted current transformer has some defects and hidden local insulation danger is hard to be detected by the existing detection manner. The paper oil insulation fault simulation model is characterized in that a main body is internally provided with two opposite metal guide rods, a pair of electrodes or a heating conductive rod penetrating through the interior of the main body is arranged between the inner end parts of the two metal guide rods, and a non-partial-discharge insulating cylinder is sleeved on the outer end part of each metal guide rod and is fixed on a shell of the main body; a scale for identifying the distance between the electrodes is arranged on the surface of one non-partial-discharge insulating cylinder, a wiring terminal capable of regulating the distance between the electrodes is arranged on the outer side of the non-partial-discharge insulating cylinder with the scale and is connected with the metal guide rods, a jack is arranged at the center of the wiring terminal, a test guide wire is inserted in the jack, and another jack is arranged at the center of the other non-partial-discharge insulating cylinder, and the test guide wire is also inserted in the jack. The paper oil insulation fault simulation model disclosed by the utility model can flexibly simulate a series of defects, such as discharge and overheat, in the main body,.
Description
Technical field
The utility model relates to realistic model, specifically a kind of inversed current transformer paper oil insulation fault simulation model.
Background technology
Current transformer (be called for short CT, as follows) is to be used to the visual plant measuring and protect in the electric system, according to the difference of structural shape, can be divided into just vertical and two kinds of inversion types.Winding and the iron core of inversion type CT are positioned at head; Wherein winding is that linear aluminum pipe and aluminium bar are in coil trim; Secondary Winding is through metal case parcel; Field strength distribution is set up in major insulation inside and the equipotential high-voltage capacitance screen of oil conservater in order to improve in addition, and tens of Zhang Duanping is set to improve the axial electric field distribution of whole insulation in the insulation course within it.Therefore, relatively just vertical, inversion type CT has that dynamic thermal stability is good, leakage reactance is little and advantage such as perfect heat-dissipating.
Inversion type CT is widely applied at present; But in recent years; The defective failure rate of inversion type CT is in rising trend, even a lot of damage incidents have taken place, and has seriously jeopardized the security of operation of electrical network; Therefore correct understanding equipment is the insulation status of equipment in service particularly, analyzes the reason of insulation degradation and formulate relative measures just to seem particularly important.Yet it is less to the ways and means of inversion type CT state of insulation detection at present; Conventional preventive trial still can not be found the defective and the fault of equipment in service effectively; And the insulating oil chromatography test is as the common method of analytical equipment insulation status; Equally also there is limitation, the one, because design feature-no conservator of inversion type CT, brought difficulty to the repairing work of repeatedly extracting behind the oil sample.The 2nd, oil chromatography analytical test result can not fully reflect the insulation status of equipment; Show mainly in the insulating oil of inversion type CT in service that hydrogen and acetylene exceed standard on the problem; Still do not have at present the research of its corresponding relation and the rule of development, have bigger difference on the reason that particularly produces for wherein gas.
The utility model content
In order further to study the inner state of insulation of inversion type CT; The abundant ways and means that detects; The utility model provides a kind of inversed current transformer paper oil insulation fault simulation model, through the defective and the fault of equipment among the flexible simulated interior discharge of the structure of adjusting interelectrode fracture distance and heating conducting rod, a series of operation inversion type CT such as overheated.
The technical scheme that the utility model adopts is following: a kind of inversed current transformer paper oil insulation fault simulation model; Comprise main body; It is characterized in that, two metal guide rods that are oppositely arranged are housed, the metal guide rod horizontal positioned in the described main body; The heating conducting rod that pair of electrodes or connects body interior is housed between the inner end of two metal guide rods, and the outer end of every metal guide rod is with the no office that is fixed on the main body cover and puts insulating cylinder; The scale that the insulating cylinder surface is provided with distance between the expression electrode is put in one of them no office; The connection terminal that is used to regulate electrode distance is equipped with outside putting insulating cylinder in this no office; Connection terminal is connected with metal guide rod; The connection terminal center has the jack that supplies the grafting test lead, and the center that insulating cylinder is put in another no office has the jack that supplies the grafting test lead.Connection terminal can rotate, to regulate electrode separation.No office puts insulating cylinder and puts insulating material by no office and process, and under the field intensity that the simulation test required voltage forms, does not produce shelf depreciation, increases the accuracy of fault simulation.
The fracture that forms between two electrodes can be full of different medium, and the heating conducting rod can lead to big electric current, with above-mentioned two kinds of situation simulation body interior different defects.An end is a live end in two electrodes, other end ground connection, and the two poles of the earth function can be exchanged; The heating conducting rod is that main body provides an electric current inlet and an electric current outlet; The utility model utilizes two interelectrode locus to place different medium; Utilize the heating conducting rod through big electric current, can simulate inversion type CT internal discharge, a series of defectives such as overheated flexibly.
As preferably, a fuel tank cap is arranged at the top of said main body, and this fuel tank cap is provided with two orthogonal vacuum valves, vacuum meter and thermocouple jacks, and vacuum valve is used for body interior is evacuated to vacuum, and vacuum meter is used for observing at any time internal pressure; The bottom of main body is provided with and gets oil, 4 fens ball valves of the dual-purpose of draining the oil, in order to obtain oil sample.
As preferably, described heating conducting rod is with multi-disc butterfly conducting strip outward, and the butterfly conducting strip is provided with temperature element.
As preferably, described electrode is point-sharp electrode or plate-plate electrode, and electrode is connected with metal guide rod through screw thread with the conducting rod that generates heat.
As preferably, described connection terminal is spherical in shape, and the inner face of metal guide rod and the end face of electrode are all rounded, to reach all purposes of pressure.
As preferably, a side of main body is provided with the glass tube oil level indicator, and the uviol view window is equipped with at the middle part of main body, to observe inner oil level and electrode situation at any time.
The utility model utilizes electrode and heating conducting rod structure can simulate body interior discharge, a series of defectives such as overheated flexibly, and adopts the uviol view window to make things convenient for defect state to keep watch on; Be in the influence Characteristics of Development down of high temperature, different materials and big electric current through the research defective at transformer oil, the detection that normally moves inversion type CT inherent vice for electric system is diagnosed test platform is provided.
Below in conjunction with Figure of description and embodiment the utility model is described further.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the structural representation of a pair of point of the utility model-sharp electrode.
Fig. 3 is the structural representation of a pair of plate-plate electrode of the utility model.
Fig. 4 is the structural representation of the utility model heating conducting rod.
Embodiment
Inversed current transformer paper oil insulation fault simulation model as shown in the figure; Two metal guide rods that are oppositely arranged 5 are housed in the main body 1; The metal guide rod horizontal positioned is equipped with the heating conducting rod 4 that pair of electrodes or connects body interior between the inner end of two metal guide rods.The outer end of every metal guide rod 5 is passed and is with the no office that is fixed on the main body cover after the main body and puts insulating cylinder 14.The scale 13 that the insulating cylinder surface is provided with distance between the expression electrode is put in one of them no office; The spherical connection terminal 6 that is used to regulate electrode distance is equipped with outside putting insulating cylinder in this no office; Connection terminal with pass metal guide rod and be connected; The connection terminal center has the jack 19 that supplies the grafting test lead, and the center that insulating cylinder is put in another no office has the jack 20 that supplies the grafting test lead.No office puts insulating cylinder and puts insulating material by no office and process.
Be with 6 butterfly conducting strips 15 outside the heating conducting rod 4, the butterfly conducting strip is provided with temperature element 16.Described electrode is point-sharp electrode 2 or plate-plate electrode 3, and electrode is connected with metal guide rod 5 through electrode interface 7, and the inner face of metal guide rod and the end face of electrode are all rounded.The top fuel tank cap 8 of main body 1 is provided with two orthogonal vacuum valves 9, vacuum meter 10 and thermocouple jack 22; The bottom of main body 1 is provided with and gets oil, 4 fens ball valves 11 of the dual-purpose of draining the oil.One side of main body 1 is provided with glass tube oil level indicator 17, and uviol view window 18 is equipped with at the middle part of main body.
The utility model can be accomplished three kinds of fault simulations, is respectively whole overheating fault, local overheating fault and discharge fault.
When carrying out the simulation of whole overheating fault, main body is placed in the large-scale baking oven, two electrode of opposite are installed at the middle part in the main body.Jack 19, jack 20 test lead of pegging graft respectively, a termination high pressure other end ground connection; Open fuel tank cap 8, will get oil, the 4 fens ball valves 11 of dual-purpose of draining the oil inject main body 1 with transformer oil after closing; Tighten six sealed screws 21 that are positioned at the fuel tank cap edge, open perpendicular to the vacuum valve of fuel tank cap and close the vacuum valve that is parallel to fuel tank cap and vacuumize, when vacuum meter 10 indications are positioned at 0.8-0.9Mpa, close all vacuum valves, extract exhaust tube; Thermopair is inserted the thermocouple jack 22 on the fuel tank cap and is tightened; Shut the greenhouse chamber door at last, and impose the voltage of certain field intensity according to interelectrode distance.In the way that fault simulation work is carried out, need repeatedly the oil sampling, the voltage of backing off when at every turn taking a sample, will take a sample syringe with get oil, the 4 fens ball valves of dual-purpose of draining the oil are connected through rubber tube, the 4 fens ball valves of dual-purpose of opening and get oil, drain the oil, with the oil sample extraction to the syringe of taking a sample.
When carrying out the local overheating fault simulation, heating conducting rod 4 is installed at the middle part in the main body.Open fuel tank cap 8, outer casing underpart is got oil, the 4 fens ball valves 11 of dual-purpose of draining the oil inject main body with transformer oil after closing; Tighten six sealed screws 21 that are positioned at the fuel tank cap edge, open perpendicular to the vacuum valve of fuel tank cap and close the vacuum valve that is parallel to fuel tank cap and vacuumize, when vacuum meter 10 indications are positioned at 0.8-0.9Mpa, close all vacuum valves, extract exhaust tube; Is that the gateway applies electric current with jack 19 with jack 20, and the conducting rod environment temperature of therefore generating heat will raise, and produce the effect of local overheating.In the way that fault simulation work is carried out, need repeatedly oil to be taken a sample, the voltage of backing off when at every turn taking a sample, the syringe of will taking a sample is connected through rubber tube with fuel outlet valve, and the 4 fens ball valves of dual-purpose of opening and get oil, drain the oil extract oil sample to the syringe of taking a sample.
When carrying out the discharge fault simulation, two electrode of opposite are installed at the middle part in the main body.Two jacks that link to each other with electrode test lead of pegging graft respectively, a termination high pressure other end ground connection is provided with coupling capacitance at high-pressure side, and adopts the shelf depreciation appearance to observe discharge scenario with this.Open fuel tank cap 8, outer casing underpart is got oil, the 4 fens ball valves 11 of dual-purpose of draining the oil inject main body with transformer oil after closing; Tighten six sealed screws 21 that are positioned at the fuel tank cap edge, open perpendicular to the vacuum valve of fuel tank cap and close the vacuum valve that is parallel to fuel tank cap and vacuumize, when vacuum meter 10 indications are positioned at 0.8-0.9Mpa, close all vacuum valves, extract exhaust tube; And impose the voltage of certain field intensity according to interelectrode distance.In the way that fault simulation work is carried out, need repeatedly oil to be taken a sample, the voltage of backing off when at every turn taking a sample, the syringe of will taking a sample is connected through rubber tube with fuel outlet valve, and the 4 fens ball valves of dual-purpose of opening and get oil, drain the oil extract oil sample to the syringe of taking a sample.
Claims (6)
1. inversed current transformer paper oil insulation fault simulation model; Comprise main body (1); It is characterized in that, two metal guide rods that are oppositely arranged (5), metal guide rod horizontal positioned are housed in the described main body (1); The heating conducting rod (4) that pair of electrodes or connects body interior is housed between the inner end of two metal guide rods, and the outer end of every metal guide rod (5) is with the no office that is fixed on the main body cover and puts insulating cylinder (14); The scale (13) that the insulating cylinder surface is provided with distance between the expression electrode is put in one of them no office; The connection terminal (6) that is used to regulate electrode distance is equipped with outside putting insulating cylinder in this no office; Connection terminal is connected with metal guide rod; The connection terminal center has the jack (19) that supplies the grafting test lead, and the center that insulating cylinder is put in another no office has the jack (20) that supplies the grafting test lead.
2. inversed current transformer paper oil insulation fault simulation model according to claim 1; It is characterized in that; One fuel tank cap (8) is arranged at the top of said main body (1), and this fuel tank cap (8) is provided with two orthogonal vacuum valves (9), vacuum meter (10) and thermocouple jack (22); The bottom of main body (1) is provided with and gets oil, 4 fens ball valves (11) of the dual-purpose of draining the oil.
3. inversed current transformer paper oil insulation fault simulation model according to claim 1 and 2 is characterized in that, described heating conducting rod (4) is outer to be with multi-disc butterfly conducting strip (15), and the butterfly conducting strip is provided with temperature element (16).
4. inversed current transformer paper oil insulation fault simulation model according to claim 1 and 2; It is characterized in that; Described electrode is point-sharp electrode (2) or plate-plate electrode (3), and electrode is connected with metal guide rod (5) through screw thread with heating conducting rod (4).
5. inversed current transformer paper oil insulation fault simulation model according to claim 1 and 2 is characterized in that described connection terminal (6) is spherical in shape, and the inner face of metal guide rod and the end face of electrode are all rounded.
6. inversed current transformer paper oil insulation fault simulation model according to claim 1 and 2 is characterized in that a side of main body (1) is provided with glass tube oil level indicator (17), and uviol view window (18) is equipped with at the middle part of main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201818201U CN202512205U (en) | 2012-04-25 | 2012-04-25 | Paper oil insulation fault simulation model of inverted current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201818201U CN202512205U (en) | 2012-04-25 | 2012-04-25 | Paper oil insulation fault simulation model of inverted current transformer |
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| CN202512205U true CN202512205U (en) | 2012-10-31 |
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| CN2012201818201U Expired - Fee Related CN202512205U (en) | 2012-04-25 | 2012-04-25 | Paper oil insulation fault simulation model of inverted current transformer |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104376765A (en) * | 2014-11-11 | 2015-02-25 | 国家电网公司 | Model simulating crack fault of capacitive screen of oil-immersed inverted current transformer |
| CN104931860A (en) * | 2014-03-19 | 2015-09-23 | 国家电网公司 | Device for testing insulating characteristic of oilpaper |
| CN109581158A (en) * | 2018-11-22 | 2019-04-05 | 西南交通大学 | A kind of electricity of transformer oil isolit-hot comprehensive test platform of pressure-stream-and test method |
| CN110208669A (en) * | 2019-06-26 | 2019-09-06 | 国网浙江省电力有限公司电力科学研究院 | The device and method of insulation degradation between simulation oil immersed type capacitor panel of current transformer |
| CN113092961A (en) * | 2021-04-01 | 2021-07-09 | 国网浙江省电力有限公司电力科学研究院 | Converter transformer partial discharge model operating mechanism |
-
2012
- 2012-04-25 CN CN2012201818201U patent/CN202512205U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931860A (en) * | 2014-03-19 | 2015-09-23 | 国家电网公司 | Device for testing insulating characteristic of oilpaper |
| CN104376765A (en) * | 2014-11-11 | 2015-02-25 | 国家电网公司 | Model simulating crack fault of capacitive screen of oil-immersed inverted current transformer |
| CN109581158A (en) * | 2018-11-22 | 2019-04-05 | 西南交通大学 | A kind of electricity of transformer oil isolit-hot comprehensive test platform of pressure-stream-and test method |
| CN109581158B (en) * | 2018-11-22 | 2020-12-18 | 西南交通大学 | Comprehensive test platform and test method for transformer oiled paper insulating material |
| CN110208669A (en) * | 2019-06-26 | 2019-09-06 | 国网浙江省电力有限公司电力科学研究院 | The device and method of insulation degradation between simulation oil immersed type capacitor panel of current transformer |
| CN113092961A (en) * | 2021-04-01 | 2021-07-09 | 国网浙江省电力有限公司电力科学研究院 | Converter transformer partial discharge model operating mechanism |
| CN113092961B (en) * | 2021-04-01 | 2022-07-05 | 国网浙江省电力有限公司电力科学研究院 | Converter transformer partial discharge model operating mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121031 Termination date: 20210425 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |