CN203601100U - Alternating current voltage-withstanding vehicle-mounted test platform for 750kv supervoltage equipment - Google Patents
Alternating current voltage-withstanding vehicle-mounted test platform for 750kv supervoltage equipment Download PDFInfo
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- CN203601100U CN203601100U CN201320778323.4U CN201320778323U CN203601100U CN 203601100 U CN203601100 U CN 203601100U CN 201320778323 U CN201320778323 U CN 201320778323U CN 203601100 U CN203601100 U CN 203601100U
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Abstract
The utility model provides an alternating current voltage-withstanding vehicle-mounted test platform for 750kv supervoltage equipment. A whole set of 750kv series-connection resonance test devices (comprising a variable-frequency power source, an exciting transformer, an electric reactor, a voltage divider and a grading ring of the electric reactor and the voltage divider) and multiple devices of an auxiliary system are integrated into a limited space inside a car through an optimal design, an integrated design that the electric reactor and the voltage divider share the grading ring is adopted, the automatically unfolded test platform and a lifting device are provided, external hoisting equipment does not need to be depended on, wiring is convenient, and therefore an on-site alternating current voltage-withstanding test for the 750kv supervoltage equipment can be efficiently and safely completed on the car with high quality.
Description
Technical field
The utility model relates to insulation of electrical installation detection technique field, specifically a kind of 750kV extra-high tension unit ac voltage withstanding track test platform.
Background technology
For extra-high tension unit is carried out to AC voltage withstand test, need some cars to load (being mainly series resonant testing equipment) such as corresponding test facility, instruments is transported to scene, arrived behind scene, various test facilitys, instrument will be removed after unloading, lift by crane, assembling and just can be tested by lifting vehicle.Under this conventional lifting mode, complete Field AC Withstand Voltage Test very loaded down with trivial details, and work capacity is huge, and relates to a large amount of manual labors, in carry and hoist process, also have certain potential safety hazard; Testing crew can expend too much energy in the manual labor and security risk management and control in the time of the hanging device of test front and back, may cause attention in process of the test to be difficult to concentrate, and loosens security risk management and control; In addition, all kinds of test cables and the mode of connection complicated and changeable thereof that instrument is supporting, not only increase the management difficulty of test facility, more increase the probability that testing crew is made mistakes in process of the test, affect to a certain extent the correctness of high-potting result, and reduced the safety factor of test.Visible, the security risk of carrying out Field AC Withstand Voltage Test under conventional lifting mode is larger, is difficult to long-time continuous and carries out the work.
Therefore, by 750kV extra-high tension unit ac voltage withstanding track test platform, solve the problems that exist in current extra-high tension unit Field AC Withstand Voltage Test, significant.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of 750kV extra-high tension unit ac voltage withstanding track test platform that integrates motorization, integrated, automation, without relying on outside hanging device, easy-to-connect, thus can realize high-quality on car, complete 750kV extra-high tension unit Field AC Withstand Voltage Test efficiently and safely.
A kind of 750kV extra-high tension unit ac voltage withstanding track test platform, comprise operator's compartment and be positioned at the compartment of rear cabin, described compartment comprises the sliding bin sliding before and after fixed compartment and relatively described fixed compartment, sliding bin is positioned at fixed compartment rear portion, it is characterized in that: sliding bin slidably enters in fixed compartment, the interior end in described compartment, is provided with slide rail, the rear end of described sliding bin is provided with and can turns down to the back lower place tailgate of opening, tailgate is provided with prolongation rail, when turning down backward, opens while being the level of state described tailgate, slide rail in compartment docks with the prolongation rail on described tailgate at the end, the outer wall of described tailgate is provided with tailgate supporting leg, the bottom in described compartment is provided with four for reinforcing the electronic supporting leg of support, slide rail in compartment is provided with travelling car at the end, described travelling car is provided with separates the lower joint reactor arranging, the lower joint bleeder that upper joint reactor and separation arrange, upper joint bleeder, upper joint reactor and upper joint bleeder keep certain interval, and share a piezometer ring, described upper joint reactor, upper joint bleeder and piezometer ring form integrative-structure, and realize oscilaltion by lifting device, in fixed compartment, be also provided with and hand over frequency power and excitation transformer.
750kV extra-high tension unit ac voltage withstanding track test platform as above, described lifting device comprises loading plate, cylinder, air-powered lifting bar, piston rod, loading plate is used for carrying joint reactor, piston rod is connected to loading plate bottom, piston rod is connected with cylinder by air-powered lifting bar, and cylinder is fixed on travelling car by base plate.
750kV extra-high tension unit ac voltage withstanding track test platform as above, the bottom of the both sides in described compartment is provided with multiple annexes cabin, in described annex cabin, be provided with electrical panel, electronic wire spool, electric operating control desk, hydraulic workstation, small generator, safe fence, exhale the equipment of singing, balance chock etc., the rear portion of described fixed compartment is provided with annex cabinet, lays pressurization bellows and Work tool in described annex cabinet.
750kV extra-high tension unit ac voltage withstanding track test platform as above, the platform vehicle of operator's compartment and compartment composition is of a size of: long 9 meters, wide 2.5 meters, high 4 meters.
750kV extra-high tension unit ac voltage withstanding track test platform as above, piezometer ring is of a size of R=1000mm, r=200mm.
The beneficial effects of the utility model: by optimal design by complete 750kV series resonance test device (comprising variable-frequency power sources, excitation transformer, reactor and bleeder and piezometer ring thereof etc.) and the many integration of equipments of ancillary system in car in utmost point finite space, adopt reactor, bleeder to share piezometer ring integrated design, possess Automatic-expanding test platform and lifting device, without relying on outside hanging device, easy-to-connect, thus realize high-quality on car, complete 750kV extra-high tension unit Field AC Withstand Voltage Test efficiently and safely.
Accompanying drawing explanation
Fig. 1 is the accumulating state schematic side view of one of them embodiment of the utility model 750kV extra-high tension unit ac voltage withstanding track test platform;
Fig. 2 is the accumulating state schematic top plan view of one of them embodiment of the utility model 750kV extra-high tension unit ac voltage withstanding track test platform;
Fig. 3 is the test condition schematic side view of one of them embodiment of the utility model 750kV extra-high tension unit ac voltage withstanding track test platform;
Fig. 4 is the test condition schematic top plan view of one of them embodiment of the utility model 750kV extra-high tension unit ac voltage withstanding track test platform;
Fig. 5 is that reactor, the bleeder of one of them embodiment of the utility model 750kV extra-high tension unit ac voltage withstanding track test platform shares piezometer ring integral structure lifting device schematic diagram, and it is contrary with other left and right, view position;
Fig. 6 is the calculating schematic diagram of piezometer ring.
In figure: 1-operator's compartment, 2-compartment, 3-fixed compartment, 4-sliding bin, 5-friendship frequency power, 6-Air compressor, 7-desk, 8-excitation transformer, 9-lower joint reactor, 10-above save reactor, 11-lower joint bleeder, 12-above save bleeder, 13-tailgate, 14-tailgate supporting leg, 15-piezometer ring, 16-electronic supporting leg, 17-annex cabinet, 18-electrical motor, 19-insulation support plate, 20-air-powered lifting bar, 21-travelling car, 22-base plate, 23-cylinder, 24-piston rod, 25-loading plate, 26-annex cabin.
The specific embodiment
Below in conjunction with the figure in the utility model, the technical scheme in the utility model is clearly and completely described.
Please refer to Fig. 1-2, one of them embodiment of the utility model 750kV extra-high tension unit ac voltage withstanding track test platform comprises operator's compartment 1 and is positioned at the compartment 2 at operator's compartment 1 rear portion, described compartment 2 comprises the sliding bin 4 sliding in fixed compartment 3 and relatively described fixed compartment 3 front and back, sliding bin 4 is positioned at fixed compartment 3 rear portions, and slidably enters in fixed compartment 3.
The interior end in described compartment 2, is provided with slide rail, the rear end of described sliding bin 4 is provided with and can turns down to the back lower place tailgate 13 of opening, tailgate 13 is provided with prolongation rail, opens while being the level of state when described tailgate 13 turns down backward, and the slide rail at the interior end, compartment 2 docks with the prolongation rail on described tailgate 13.The outer wall of described tailgate 13 is provided with tailgate supporting leg 14, opens while being the level of state when described tailgate 13, and tailgate supporting leg 14 is supported on tailgate 13 belows.The bottom in described compartment 2 is provided with four for reinforcing the electronic supporting leg 16 of support.
Please further refer to Fig. 3, slide rail at the interior end, compartment 2 is provided with travelling car 21, described travelling car 21 is provided with to be separated the lower joint reactor 9 arranging, upper joint reactor 10 and separates the lower joint bleeder 11, the upper joint bleeder 12 that arrange, upper joint reactor 10 keeps certain interval with upper joint bleeder 12, and share a piezometer ring 15, lower joint bleeder 11, lower joint reactor 9 are provided with a piezometer ring separately.Described piezometer ring 15 can adopt monocycle or twin nuclei, and in the present embodiment, accompanying drawing describes as an example of dicyclo example.Described piezometer ring 15 carries out equipotential by upper joint reactor 10 with upper joint bleeder 12 and is connected, upper joint reactor 10, upper joint bleeder 12 and piezometer ring 15 form integrative-structure, and the lower end of upper joint reactor 10, upper joint bleeder 12 is fixed on (current potential is not clamped down on together) on insulation support plate 19.Described upper joint reactor 10, upper joint bleeder 12 and piezometer ring 15 are realized oscilaltion by lifting device.
Described lifting device comprises loading plate 25, cylinder 23, air-powered lifting bar 20, piston rod 24, loading plate 25 is for carrying upper joint reactor 10, piston rod 24 is connected to loading plate 25 bottoms, piston rod 24 is connected with cylinder 23 by air-powered lifting bar 20, and cylinder 23 is fixed on travelling car 21 by base plate 22.As shown in Figure 1, in the time of accumulating state, piston rod 24 is accommodated in air-powered lifting bar 20, and air-powered lifting bar 20 is accommodated in cylinder 23, and now loading plate 25 is positioned at lowest part.In the time that needs carry out voltage with stand test, start cylinder 23, upwards jacking loading plate 25 of air-powered lifting bar 20 and piston rod 24, and then described upper joint reactor 10, upper joint bleeder 12 and piezometer ring 15 are risen to eminence test, after end of test, can decline again.In the time that piezometer ring 15 adopts twin nuclei, can also configure a hydraulic pressure lifting device for lifting dicyclo.
The bottom of the both sides in described compartment 2 is provided with multiple annexes cabin 26, in described annex cabin, be provided with electrical panel, electronic wire spool, electric operating control desk, hydraulic workstation, small generator, safe fence, exhale the equipment of singing, balance chock etc., the rear portion of described fixed compartment 3 is provided with annex cabinet 17, lays pressurization bellows and Work tool etc. in described annex cabinet 17.In fixed compartment 3, be also provided with and hand over frequency power 5, Air compressor 6, desk 7, excitation transformer 8, electrical motor 18, wherein hand over frequency power 5, excitation transformer 8, reactor and bleeder and piezometer ring composition series resonance test device thereof, Air compressor 6 is for giving cylinder 23 air feed.In the time carrying out voltage with stand test, hand over frequency power 5 to be connected with the low pressure tap of excitation transformer 8, the high pressure tap of excitation transformer 8 is connected with the lower binding post of lower joint reactor 9, the upper binding post of lower joint reactor 9 is connected with the lower binding post of upper joint reactor 10, the upper binding post of lower joint bleeder 11 is connected with the lower binding post of upper joint bleeder 12, and piezometer ring 15 is connected with tested product.
Test platform Automatic-expanding step is as follows: a. operates electric device, and four electronic supporting legs 16 on test car are risen; B. operate automatic hydraulic system, open tailgate 13 to level; C. operate electric device, rise tailgate supporting leg 14; D. operate electric device, rear portion sliding bin 4 is slid onto forward in anterior fixed compartment 3; E. operate electric device, by travelling car 21 slippages to assigned address tailgate 13, this anti-device 9 that economizes on electricity at present, upper joint reactor 10 and lower joint bleeder 11, upper joint bleeder 12 are simultaneously along with travelling car 21 moves on tailgate 13 away from fixed compartment 3, be fixed by inhibiting device, making has enough safety distances between high-tension apparatus and compartment 2 simultaneously; F. operate lifting device, upper joint reactor 10, upper joint bleeder 12, piezometer ring 15 are given rise to test position, and it is fixing to use lockout mechanism to carry out a high position.The source of AC that all expansion of test platform and the required power supply of displacement automatic operation divide the direct supply for being supplied with by automobile storage battery and supplied with by joined small generator.
Test platform is in the time completing the test of 460kV and following voltage, as long as by upper joint reactor 10, upper joint bleeder 12 and piezometer ring 15 integral structures move to assigned address, be lifted to certain altitude, without using lower joint reactor 9 and lower joint bleeder 11, simultaneously also by lower joint reactor 9 and lower joint bleeder 11 away from upper joint reactor 10, upper joint bleeder 12 and the enough insulation distances of piezometer ring 15 integral structures, be understandable that, lower joint reactor 9, between lower joint bleeder 11 and base plate 22 for being flexibly connected, for example coordinate securing arrangement to be arranged on travelling car 21 by roller.
For having possessed the dispatching from the factory of extra-high pressure grade electrical equipment, acceptance trial ability, the specified testing tension value of this test platform is decided to be to 750kV.
Due to 110kV, 220kV electrical equipment is far below 500kV, the ac voltage withstanding value of 750kV electrical equipment, withstand voltage required insulation distance, there is larger difference in the each side such as pressurization bellows diameter, consider 110kV, the convenience of 220kV electrical equipment acceptance trial, and reactor, bleeder and the development of its corollary apparatus and the operability of arranging, the utility model is by reactor, bleeder is divided into two joints, the load voltage value of one joint should be the ac voltage withstanding value of 220kV GIS equipment, be 460kV, the load voltage value of another joint is 750kV-460kV=290kV.460kV reactor, the required ground insulation of bleeder are larger apart from need, are decided to be joint, and lower joint reactor, bleeder rated voltage are 290kV.
For convenience of platform vehicle current on the limited road such as alternate road in substation, meet the current condition on substation's standard road of 4 meters of main thoroughfares, 3.5 meters, fire-fighting road, 3 meters, maintenance road, and for meeting country's " overload transport vehicle travel highway administration regulation " and " on-road vehicle contour dimension, axle load and quality limit value " requirement, the size limit value of platform vehicle should be decided to be: long 9 meters, wide 2.5 meters, high 4 meters.
After track test platform Automatic-expanding puts in place, the insulation distance between each high-tension apparatus and car body/ground all should meet the safe insulation required distance in the time that maximal pressure is tested.For example, a. g. between upper joint reactor, bleeder piezometer ring and car body/ground should be able to bear the high pressure of 750kV, at least 3 meters, a. g. between lower joint reactor, bleeder piezometer ring and car body/ground should be able to bear the high pressure of 290kV, at least about 1.5 meters.
The size design of the insulation distance between test platform main equipment and car upper periphery object, needs, by Electric Field Distribution simulation calculation, repeatedly to revise and verify its feasibility.Especially upper joint reactor, bleeder share piezometer ring, around voltage is the highest, electric field intensity is maximum for it, its size design must be larger, all press effect better, but its size design is subject to again the space constraint in platform, to this, the size that reactor and bleeder share piezometer ring should all be pressed effect can meet under the prerequisite of on-the-spot actual needs at it and is designed to be as small as possible, and the size that upper joint reactor, bleeder share piezometer ring can design by following situation: piezometer ring around electric field intensity equals not occur the maximum field intensity of bunch discharge.
The electric field empirical formula of piezometer ring is (please refer to Fig. 6):
Emax=U[1+(r/2R)×ln(8R/r)]/[rln(8R/r)]，
In formula, u is the magnitude of voltage of regulation; R is piezometer ring radius; R is piezometer ring aluminium tube radius; E is electric field intensity.
Change large piezometer ring (i.e. upper joint reactor 10, the shared piezometer ring 15 of upper joint bleeder 12) size and can change R and r value, be varying sizedly respectively: R=1000mm, r=400mm; R=1000mm, r=200mm; R=800mm, r=200mm.
Electric Field Distribution under these three kinds of different sizes of simulation calculation, wherein, tandem reactor evenly boosts, and little piezometer ring (descending joint reactor piezometer ring) boosts to 290kV, and large piezometer ring boosts to 750kV, metal case ground connection.
Result demonstration, above three kinds of different size lower platform maximum field intensity are all positioned at large piezometer ring outer, and its value is respectively 11kV/cm, 15kV/cm, 16kV/cm.
According to electric field empirical formula Emax=U[1+ (the r/2R) × ln (8R/r) of piezometer ring]/[rln (8R/r)], calculate the maximum field intensity of isolated piezometer ring, and it is as shown in table 1 relatively to utilize ansys and empirical equation to calculate three kinds of size lower uniform pressure ring place maximum field intensity.
Table 1 piezometer ring place maximum field intensity (kV/cm)
| Method of calculating | R=1000mm，r=200mm | R=800mm、r=200mm | R=1000mm，r=400mm |
| Ansys |
15 | 16 | 11 |
| Empirical equation | 13.91 | 15.5 | 10.01 |
From table 1, the empirical equation computing value under three kinds of different sizes is compared with utilizing ANSYS Finite Element Method computing value, all slightly on the low side.
Experience shows, electric field intensity is no more than in the situation of 15kV/cm, can guarantee not occur bunch discharge.From table 1, in the time that large piezometer ring design size is R=1000mm, r=400mm, although it all presses effect can meet on-the-spot actual needs, maximum field strength margin is excessive, and size design obtains not little; In the time that large piezometer ring design size is R=800mm, r=200mm, size is little, but piezometer ring place maximum field intensity (being platform maximum field strength) exceedes 15kV/cm, does not meet on-the-spot actual needs; When large piezometer ring design size is R=1000mm, when r=200mm, piezometer ring place maximum field intensity (being platform maximum field strength), just in time for 15kV/cm, not only all presses effect can meet on-the-spot actual needs, and is designed to be as small as possible putting its size before this.
Therefore, the utility model track test platform is sized to R=1000mm by piezometer ring 15, r=200mm.
Test platform also should be checked through tight mechanical characteristics and be calculated, measuring system calibrating run is verified.Wherein, mechanical characteristics is checked calculating content and is comprised barycenter, axle load distribution, load distribution check, the maximum deviation of load, maximum roll stable angle, lateral stability, fore-and-aft stability etc., and result meets relevant national standard requirement; The various combinations (upper and lower joint reactor, bleeder all use, and only use upper joint reactor, bleeder) of measuring system all should be qualified through the calibration of national high-voltage metering station.
The above; it is only the specific embodiment of the present utility model; but protection domain of the present utility model is not limited to this; any belong to those skilled in the art the utility model disclose technical scope in; the variation that can expect easily or replacement, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claim.
Claims (5)
1. a 750kV extra-high tension unit ac voltage withstanding track test platform, comprise operator's compartment (1) and be positioned at the compartment (2) at operator's compartment (1) rear portion, described compartment (2) comprises the sliding bin (4) sliding before and after fixed compartment (3) and relatively described fixed compartment (3), sliding bin (4) is positioned at fixed compartment (1) rear portion, it is characterized in that: sliding bin (4) slidably enters in fixed compartment (3), the interior end in described compartment (2), is provided with slide rail, the rear end of described sliding bin (4) is provided with and can turns down to the back lower place tailgate (13) of opening, tailgate (13) is provided with prolongation rail, when turning down backward, opens while being the level of state described tailgate (13), slide rail at the interior end, compartment (2) docks with the prolongation rail on described tailgate (13), the outer wall of described tailgate (13) is provided with tailgate supporting leg (14), the bottom in described compartment (2) is provided with four for reinforcing the electronic supporting leg (16) of support, slide rail at the interior end, compartment (2) is provided with travelling car (21), described travelling car (21) is provided with separates the lower joint reactor (9) arranging, the lower joint bleeder (11) that upper joint reactor (10) and separation arrange, upper joint bleeder (12), upper joint reactor (10) keeps certain interval with upper joint bleeder (12), and share a piezometer ring (15), described upper joint reactor (10), upper joint bleeder (12) and piezometer ring (15) form integrative-structure, and realize oscilaltion by lifting device, in fixed compartment (3), be also provided with and hand over frequency power (5) and excitation transformer (8).
2. 750kV extra-high tension unit ac voltage withstanding track test platform as claimed in claim 1, it is characterized in that: described lifting device comprises loading plate (25), cylinder (23), air-powered lifting bar (20), piston rod (24), loading plate (25) is for carrying upper joint reactor (10), piston rod (24) is connected to loading plate (25) bottom, piston rod (24) is connected with cylinder (23) by air-powered lifting bar (20), and cylinder (23) is fixed on travelling car (21) by base plate (22).
3. 750kV extra-high tension unit ac voltage withstanding track test platform as claimed in claim 1, it is characterized in that: the bottom of the both sides of described compartment (2) is provided with multiple annexes cabin (26), in described annex cabin, be provided with electrical panel, electronic wire spool, electric operating control desk, hydraulic workstation, small generator, safe fence, exhale the equipment of singing, balance chock etc., the rear portion of described fixed compartment (3) is provided with annex cabinet (17), lays pressurization bellows and Work tool in described annex cabinet (17).
4. 750kV extra-high tension unit ac voltage withstanding track test platform as claimed in claim 1, is characterized in that: the platform vehicle of operator's compartment (1) and compartment (2) composition is of a size of: long 9 meters, wide 2.5 meters, high 4 meters.
5. 750kV extra-high tension unit ac voltage withstanding track test platform as claimed in claim 1, is characterized in that: piezometer ring (15) is of a size of R=1000mm, r=200mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320778323.4U CN203601100U (en) | 2013-12-02 | 2013-12-02 | Alternating current voltage-withstanding vehicle-mounted test platform for 750kv supervoltage equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320778323.4U CN203601100U (en) | 2013-12-02 | 2013-12-02 | Alternating current voltage-withstanding vehicle-mounted test platform for 750kv supervoltage equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103600680A (en) * | 2013-12-02 | 2014-02-26 | 国家电网公司 | Alternating current withstand voltage vehicle-mounted testing platform for 750kV ultrahigh voltage equipment |
| CN107329063A (en) * | 2017-08-10 | 2017-11-07 | 广州市恒力检测股份有限公司 | A kind of electric-power safe instruments nigration car |
| CN112946434A (en) * | 2021-02-01 | 2021-06-11 | 江苏粤科检测技术服务有限公司 | Electrical equipment withstand voltage test platform |
-
2013
- 2013-12-02 CN CN201320778323.4U patent/CN203601100U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103600680A (en) * | 2013-12-02 | 2014-02-26 | 国家电网公司 | Alternating current withstand voltage vehicle-mounted testing platform for 750kV ultrahigh voltage equipment |
| CN103600680B (en) * | 2013-12-02 | 2015-11-11 | 国家电网公司 | 750kV extra-high tension unit ac voltage withstanding track test platform |
| CN107329063A (en) * | 2017-08-10 | 2017-11-07 | 广州市恒力检测股份有限公司 | A kind of electric-power safe instruments nigration car |
| CN107329063B (en) * | 2017-08-10 | 2023-04-28 | 广州市恒力检测股份有限公司 | Electric power safety tool removes test car |
| CN112946434A (en) * | 2021-02-01 | 2021-06-11 | 江苏粤科检测技术服务有限公司 | Electrical equipment withstand voltage test platform |
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| C14 | Grant of patent or utility model | ||
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| AV01 | Patent right actively abandoned |
Granted publication date: 20140521 Effective date of abandoning: 20151111 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |