CN204758767U - Suspension insulator's ac voltage withstand test testing system - Google Patents
Suspension insulator's ac voltage withstand test testing system Download PDFInfo
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- CN204758767U CN204758767U CN201520593773.5U CN201520593773U CN204758767U CN 204758767 U CN204758767 U CN 204758767U CN 201520593773 U CN201520593773 U CN 201520593773U CN 204758767 U CN204758767 U CN 204758767U
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- 238000012360 testing method Methods 0.000 title claims abstract description 131
- 239000012212 insulator Substances 0.000 title claims abstract description 105
- 239000000725 suspension Substances 0.000 title abstract description 11
- 238000012806 monitoring device Methods 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims description 32
- 229910052751 metal Inorganic materials 0.000 claims description 32
- 230000033228 biological regulation Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 10
- 230000008901 benefit Effects 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 7
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 230000007547 defect Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 5
- 238000010998 test method Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000007667 floating Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
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- 238000005096 rolling process Methods 0.000 description 1
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Abstract
The utility model provides a suspension insulator's ac voltage withstand test testing system, include power, voltage regulator, transformer, current monitoring device and the suspension insulator who is surveyed, wherein, the power -on mistake the voltage regulator with the transformer be connected, the current monitoring device respectively with the power and the voltage regulator be connected, the transformer with suspension insulator be connected, the power -on mistake after the voltage regulator pressure regulating input to with the transformer, transformer output's high pressure apply in suspension insulator's high -pressure side, suspension insulator's other end ground connection. The utility model provides a suspension insulator's ac voltage withstand test testing system has improved operating mass with rated load, efficiency, experimental artifical less investment, and economic benefits is obvious, implementation process safe and reliable.
Description
Technical field
The utility model, about technical field of power systems, particularly about the detection technique of insulator in electric system, is a kind of AC voltage withstand test system of suspended insulator concretely.
Background technology
In recent years, suspended insulator is more and more widely used in electric system.Suspended insulator generally runs in atmospheric conditions, and its performance is directly connected to the safety of the person, equipment and electric system.After the links such as commissioning test, preventive trial, maintenance, defect processing, need to carry out AC voltage withstand test to it, every sheet trial voltage is 60kV, and pressure-resistant time is 1min.At present, the withstand voltage test scheme extensively adopted has the following two kinds:
(1), monolithic withstand voltage test
The AC voltage withstand test of suspended insulator adopts monolithic dismounting mode to carry out, that is: remove insulator chain-burst and test-assemble insulator chain.This test method needs to remove piecewise and assemble, and adds metal-ware wearing and tearing, and ubiquity connection pin fractures, insulating part crackle, fragment phenomenon, incurs loss through delay subsequent installation link.In addition, the suspension insulator quantum count applied in line project, substation project is very large, a 500kV conventional substation needs the suspended insulator of 20000 multi-discs, this test method needs to drop into more testing operation personnel, repeatedly workload large, test length consuming time, work efficiency is low, experimental safe hidden danger is large.
(2), bunchiness withstand voltage test
Adopt the horizontal suspended insulator AC voltage withstand test of bunchiness, by difference short circuit insulator chain connection metal joint, draw two test pressurized line, insulator chain is horizontal is arranged in plane, and which can realize the withstand voltage test in parallel of many insulator strings.Horizontal arrangement easily causes charged metal position to discharge over the ground, affects withstand voltage test result, the tested insulator of determining interference whether existing defects.In addition, test loop wiring does not have obvious secured electrical distance to bring test hidden danger, even if the quarantine measures of taking, also may blow due to scene, the reason such as tested insulator chain rolling causes secured electrical distance not, have impact on conclusion (of pressure testing), cause defect to judge by accident, bring potential safety hazard.
Therefore, all there is certain problem or defect in above-mentioned two kinds of testing programs in test efficiency, test accuracy, economy, security.In order to better carry out AC voltage withstand test to suspended insulator, to improve withstand voltage test precision, reduce workload, to increase work efficiency, ensure job safety, the AC voltage withstand test scheme wanting a kind of new suspended insulator is badly in need of in this area.
Utility model content
In order to solve monolithic withstand voltage test of the prior art, bunchiness withstand voltage test is at test efficiency, test accuracy, economy, there is certain problem or defect in security aspect, the utility model provides a kind of AC voltage withstand test system of suspended insulator, by power supply by being input to testing transformer after pressure regulator pressure regulation, the high pressure that testing transformer exports is applied to the high-pressure side of tested insulator, every sheet insulator other end ground connection, realize examining the withstand voltage test of tested insulator, improve work quality, efficiency, experimental labor's less investment, economic benefit is obvious, implementation process is safe and reliable.
The purpose of this utility model is, provides a kind of AC voltage withstand test system of suspended insulator, comprises power supply, pressure regulator, transformer, current monitoring device and tested suspended insulator; Wherein, described power supply is connected with described transformer by described pressure regulator; Described current monitoring device is connected with described power supply and described pressure regulator respectively; Described transformer is connected with described suspended insulator; Described power supply is by inputing to and described transformer after described pressure regulator pressure regulation; The high pressure that described transformer exports puts on the high-pressure side of described suspended insulator; The other end ground connection of described suspended insulator.
In preferred implementation of the present utility model, described power supply is 220V AC power.
In preferred implementation of the present utility model, described current monitoring device is amp gauge.
In preferred implementation of the present utility model, the AC voltage withstand test system of described suspended insulator also comprises test bracket, and described test bracket comprises cross-arm, pole and fastening line.
In preferred implementation of the present utility model, described cross-arm, pole and fastening line are metal.
In preferred implementation of the present utility model, the AC voltage withstand test system of described suspended insulator also comprises the high-voltage connection be connected with described transformer.
In preferred implementation of the present utility model, the metal-ware of described suspended insulator is by rigid metal shorting stub short circuit, form the first extension line and the second extension line, wherein, the first described extension line is connected to described cross-arm, and the second described extension line is connected with described high-voltage connection.
The beneficial effects of the utility model are, provide a kind of AC voltage withstand test system of suspended insulator, by power supply by being input to testing transformer after pressure regulator pressure regulation, the high pressure that testing transformer exports is applied to the high-pressure side of tested insulator, and every sheet insulator other end ground connection, realizes examining the withstand voltage test of tested insulator, this pilot system can carry out the withstand voltage test of many insulator strings simultaneously, trial voltage primary system one, improves test accuracy, and horizontal basis for estimation is accurate; In the scope that experiment power supply, pressure regulator, test transform capacity allow, and under the enough prerequisite of test bracket load-bearing capacity, the withstand voltage test of many insulator strings can be carried out simultaneously, decrease repeated removal, the workload of test preparation and the input of experimental labor, work efficiency is significantly enhanced; The device that this pilot system is equipped with and material can be gathered materials on the spot at the scene, with low cost, the input efficiently reducing artificial and auxiliary Work tool of test method, remarkable in economical benefits; The tested suspended insulator of application rigid metal shorting stub short circuit, can ensure secured electrical distance, test bracket integral ground, avoids floating potential, and it is reliable that above measure finally achieves withstand voltage test process safety.
For above and other object of the present utility model, feature and advantage can be become apparent, preferred embodiment cited below particularly, and coordinate institute's accompanying drawings, be described in detail below.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structure principle chart of the AC voltage withstand test system of a kind of suspended insulator that Fig. 1 provides for the utility model embodiment;
The structural representation of the AC voltage withstand test system of a kind of suspended insulator that Fig. 2 provides for the utility model embodiment.
Drawing reference numeral:
Power supply 1
Pressure regulator 2
Current monitoring device 3
Transformer 4
Suspended insulator 5
High-voltage connection 6
Metallic struts 7
Cross-arm 8
Fastening line 9
Rigid metal shorting stub 10
Chapeau de fer 11
Steel pin 12
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
The fundamental purpose of the utility model embodiment is carry out improving to the test unit generally adopted at present, technical scheme and improve, novel suspended insulator Withstand test device and technical scheme are proposed, make every effort to improve withstand voltage test precision, reduce workload, increase work efficiency, ensure job safety.For this reason, the utility model takes following technical scheme to carry out AC voltage withstand test.
The structure principle chart of the AC voltage withstand test system of a kind of suspended insulator that Fig. 1 provides for the utility model embodiment, as shown in Figure 1, the AC voltage withstand test system of suspended insulator that the utility model provides comprises power supply 1, pressure regulator 2, transformer 4, current monitoring device 3 and tested suspended insulator 5.
Wherein, described power supply 1 is connected with described transformer 4 by described pressure regulator 2;
Described current monitoring device 3 is connected with described power supply 1 and described pressure regulator 2 respectively;
Described transformer 4 is connected with described suspended insulator 5;
Described power supply 1 is by inputing to and described transformer 4 after the pressure regulation of described pressure regulator 2;
The high pressure that described transformer 4 exports puts on the high-pressure side of described suspended insulator 5, the other end ground connection of described suspended insulator.Also the high pressure that namely testing transformer exports is applied to the high-pressure side of tested insulator, and every sheet insulator other end ground connection, realizes examining the withstand voltage test of tested insulator.
In preferred implementation of the present utility model, described power supply can be 220V AC power, and described current monitoring device is amp gauge.Amp gauge is for monitoring input current, thus Control experiment capacity.
The structural representation of the AC voltage withstand test system of a kind of suspended insulator that Fig. 2 provides for the utility model embodiment, as shown in Figure 2, in preferred implementation of the present utility model, the AC voltage withstand test system of described suspended insulator also comprises test bracket, and described test bracket comprises cross-arm 8, pole 7 and fastening line 9.Described cross-arm 8, pole 7 and fastening line 9 are metal in a particular embodiment, are metallic struts, metal cross arm, the fastening line of metal.Each position of test bracket connects reliable, ensures that electrical connection is stable, duration of test, metallographictest support reliable ground.As shown in Figure 2; can at engineering site assembling metal test bracket; the angle steel that metallic struts 7 and metal cross arm 8 can adopt the intensity of engineering site to meet the demands or scaffolding steel pipe; guarantee machinery, electrical connection position metal non-corroding; the fastening line 9 of metal can be gathered materials on the spot, and can ensure metal bracket stable and enough bearing capacities.After test bracket assembling, the inspection of outward appearance, mechanical stability and bearing capacity be carried out, avoid test bracket to collapse; With the electrical connection at each position of multimeter ohms range bit test, guarantee the electrical integrity of metal support, avoid occurring floating potential or shelf depreciation occurring.
In preferred implementation of the present utility model, the AC voltage withstand test system of described suspended insulator also comprises the high-voltage connection 6 be connected with described transformer.The metal-ware of described suspended insulator is by rigid metal shorting stub 10 short circuit, and form the first extension line and the second extension line, wherein, the first described extension line is connected to described cross-arm, and the second described extension line is connected with described high-voltage connection.
Namely in embodiment of the present utility model, every sheet tested insulator both sides metal-ware is respectively by rigid metal shorting stub 10 short circuit, form the tested insulator extension line of two-way, one pass outlet is reliably connected to metal cross arm 8, another pass outlet is reliably connected with testing transformer 4 high-voltage test leads, and test AC power is input to testing transformer by pressure regulator.
In other embodiments of the present utility model, the AC voltage withstand test system of described suspended insulator also can comprise chapeau de fer 11, steel pin 12 as shown in Figure 2.
Introduce below in conjunction with specific embodiment the course of work that the AC voltage withstand test system applying the suspended insulator that the utility model provides carries out withstand voltage test in detail, it mainly comprises the following steps:
1) Assembling metallographictest support, checks rack mechanical stability and bearing capacity, tests the electrical connection at each position, guarantee the electrical integrity of metal support with multimeter ohms range;
2) prepare to wait to try insulator chain, hang on metallographictest support by steel pin.In new construction, producer packaging the supply of material insulator be generally 5 a string, directly can hang and carry out withstand voltage test; Operating suspension insulator string is generally greater than 5, and tested insulator chain can suitably increase, and is no more than at most 7, to reduce support height and carrying difficulty.Steel pin can be fixed on metal cross arm in advance, during suspension insulator string, is responsible for the connection of steel pin and chapeau de fer by special messenger.
3) by the tested insulator both sides metal-ware of the above-mentioned suspension of rigid metal shorting stub difference short circuit, form the tested insulator extension line of two-way, one pass outlet is unified is reliably connected to metal cross arm, and another pass outlet is reliably connected with testing transformer high-voltage test leads.Shorting stub can adopt rigid metal sheet in scene on the spot, inserts chapeau de fer and realizes being connected with the reliable of metal-ware with the gap of insulating part, also can process Special short line and realize the connection of each metal-ware and unified grafting.
4) prepare applied voltage test loop, guarantee that the electrical connection of AC-testing supply, pressure regulator, amp gauge, testing transformer is reliable, equipment metal shell reliable ground.Each interfacility link can adopt general dedicated test wire and matched plug, joint; the current capacity of industrial siding will consider the needs of capacity of experiment; earth leakage circuit-breaker is adopted to realize the break-make of test loop; multimeter can be adopted under enabled condition to check pressure regulator input, output voltage, avoid pressure regulator fault or circuit breaking to incur loss through delay test.Pressure regulator suitably adopts long industrial siding to the input lead of testing transformer, increases the electrical distance of pressurized operation personnel and testing transformer, with the personal safety of warranty test personnel.
5) unsettled testing transformer lead-out terminal, carries out precharge, the correct output of inspection pressurizing loop integrality and voltage.On the one hand, the correct output of inspection pressurizing loop integrality and voltage, on the other hand, prevents too high output voltage from puncturing tested insulator, the defects of insulator avoiding pressurizing loop defect to bring and problem erroneous judgement.
6) high-voltage test leads is connected to tested insulator, namely high-voltage test leads is connected to tested insulator high-voltage connection end, high-voltage test leads is recommended to adopt bare copper wire and testing transformer reliably to twine and is connect, other end bind special clip is for connecting tested insulator elevated pressurization lead-in wire, easily break in Conventional insulation wire or industrial siding joint, disguise not easily finds by force.
Require to carry out withstand voltage test, persistent pressure 1 minute, phenomenon without exception according to withstand voltage test, pressure regulator makes zero, and pulls open trial voltage.Remove tested insulator chain, isolate defects insulator, prepare to wait to try insulator chain, proceed follow-up test according to step 1 ~ 5.
In sum, the AC voltage withstand test system of a kind of suspended insulator that application the utility model embodiment provides carries out withstand voltage test, improves work quality, efficiency, experimental labor's less investment, economic benefit is obvious, and implementation process is safe and reliable, and main advantage is as follows:
1) this experimental technique scheme can carry out the withstand voltage test of many insulator strings simultaneously, and trial voltage primary system one, improves test accuracy, and horizontal basis for estimation is accurate;
2) in the scope that experiment power supply, pressure regulator, test transform capacity allow, and under the enough prerequisite of test bracket load-bearing capacity, the withstand voltage test of many insulator strings can be carried out simultaneously, decrease repeated removal, the workload of test preparation and the input of experimental labor, work efficiency is significantly enhanced;
3) this testing program be equipped with device and material can gather materials on the spot at the scene, with low cost, the input efficiently reducing artificial and auxiliary Work tool of test method, remarkable in economical benefits;
4) apply the tested suspended insulator of rigid metal shorting stub short circuit, can ensure secured electrical distance, test bracket integral ground, avoids floating potential, and it is reliable that above measure finally achieves withstand voltage test process safety.
Key problem in technology point of the present utility model and wish protection point are:
1) test bracket adopts rigid metal support, metal support reliable ground;
2) adopt rigid metal shorting stub short circuit tested insulator metal annex, practical operation is strong, electrical safety distance easily realizes, stability is high;
3) each tested suspended insulator is by grounded metal support reliable ground, decreases pilot system high pressure suspending current potential quantity, improves security performance;
4) insulator hangs the steel pin realization be equipped with by producer, ensures to hang reliably;
5) this test pressuring method simulates suspended insulator actual condition, test hang with hang in line project that to hang on structure support situation on steel tower, in power transformation engineering consistent in essence, conclusion (of pressure testing) application is strong;
6) tested suspended insulator bunchiness test, and can simultaneously hang many strings according to actual conditions, actual tests process can adjust the quantity increasing or adjust and reduce insulator chain, flexible operation, adaptable.
Those skilled in the art can also recognize that the various functions that the utility model embodiment is listed are the designing requirements realizing depending on specific application and whole system by hardware or software.Those skilled in the art for often kind of specifically application, can use the function described in the realization of various method, but this realization can should not be understood to the scope exceeding the protection of the utility model embodiment.
Apply specific embodiment in the utility model to set forth principle of the present utility model and embodiment, the explanation of above embodiment just understands method of the present utility model and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (7)
1. an AC voltage withstand test system for suspended insulator, is characterized in that, the AC voltage withstand test system of described suspended insulator comprises power supply, pressure regulator, transformer, current monitoring device and tested suspended insulator;
Wherein, described power supply is connected with described transformer by described pressure regulator;
Described current monitoring device is connected with described power supply and described pressure regulator respectively;
Described transformer is connected with described suspended insulator;
Described power supply is by inputing to and described transformer after described pressure regulator pressure regulation;
The high pressure that described transformer exports puts on the high-pressure side of described suspended insulator;
The other end ground connection of described suspended insulator.
2. the AC voltage withstand test system of suspended insulator according to claim 1, is characterized in that, described power supply is 220V AC power.
3. the AC voltage withstand test system of suspended insulator according to claim 1, is characterized in that, described current monitoring device is amp gauge.
4. the AC voltage withstand test system of the suspended insulator according to claims 1 to 3 any one, it is characterized in that, the AC voltage withstand test system of described suspended insulator also comprises test bracket, and described test bracket comprises cross-arm, pole and fastening line.
5. the AC voltage withstand test system of suspended insulator according to claim 4, is characterized in that, described cross-arm, pole and fastening line are metal.
6. the AC voltage withstand test system of suspended insulator according to claim 4, is characterized in that, the AC voltage withstand test system of described suspended insulator also comprises the high-voltage connection be connected with described transformer.
7. the AC voltage withstand test system of suspended insulator according to claim 6, it is characterized in that, the metal-ware of described suspended insulator is by rigid metal shorting stub short circuit, form the first extension line and the second extension line, wherein, the first described extension line is connected to described cross-arm, and the second described extension line is connected with described high-voltage connection.
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| CN201520593773.5U CN204758767U (en) | 2015-08-07 | 2015-08-07 | Suspension insulator's ac voltage withstand test testing system |
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| CN201520593773.5U CN204758767U (en) | 2015-08-07 | 2015-08-07 | Suspension insulator's ac voltage withstand test testing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105334437A (en) * | 2015-11-18 | 2016-02-17 | 国家电网公司 | Portable insulator zero-value overhead testing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105334437A (en) * | 2015-11-18 | 2016-02-17 | 国家电网公司 | Portable insulator zero-value overhead testing device |
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