CN203870201U - Gis equipment test device - Google Patents
Gis equipment test device Download PDFInfo
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- CN203870201U CN203870201U CN201420198122.1U CN201420198122U CN203870201U CN 203870201 U CN203870201 U CN 203870201U CN 201420198122 U CN201420198122 U CN 201420198122U CN 203870201 U CN203870201 U CN 203870201U
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- gis equipment
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Abstract
The utility model discloses a GIS equipment test device which comprises the components of: a GIS equipment housing; three conductors which are arranged in the GIS equipment housing; at least two basin type insulators which penetrate the conductors; an AC power supply which is electrically connected with the ends of the three conductors, wherein each conductor is correspondingly connected with one phase of the AC power supply; and a DC power supply which is electrically connected with the housing of the GIS equipment. According to the GIS equipment test device, AC voltage is applied on the conductors in the GIS equipment respectively through the high-voltage AC power supply, and DC voltage is applied on the housing of the GIS equipment through the high-voltage DC power supply, thereby realizing application of DC superposed voltage on the GIS equipment for testing capability of the GIS equipment for bearing AC/DC voltage for long time.
Description
Technical field
The utility model relates to transmission facility test field, particularly a kind of GIS equipment test device.
Background technology
In flexible DC power transmission system, converter valve AC is owing to being subject to the impact of direct-current polar Voltage unbalance, and a DC voltage component has superposeed under former alternating voltage stress.Flexible direct current converter station is because capacity is less at present, and be applied to the higher occasion of environmental requirement more, the indoor compact arrangement of general employing, this also requires equipment to select the upper GIS of the employing (abbreviation of GasInsulatedSwitchgear more, GIS refers to sulfur hexafluoride sealed combination electrical equipment, is called in the world " Cubicle Gas-Insulated Switchgear ") etc. compact device.And that GIS equipment bears DC voltage ability is poor, be mainly under long-term DC voltage impact, the inner disc insulator of GIS surface can produce electric charge and gather, and in the time that the time increases the quantity of electric charge and accumulates to a certain degree, can destroy the insulating property of GIS device interior.
And under combined-voltage acts on simultaneously, as long as there is in theory voltage over zero, can be favourable to the situation of gathering of electric charge.But also do not have at present the corresponding standard can reference, can only verify by testing.For test power device, domestic also do not have test mechanism to have the testing equipment that high voltage ac/dc voltage waveform occurs simultaneously.Because Technology of HVDC based Voltage Source Converter at home and abroad just develops, the application scenario of GIS equipment being born to alternating current-direct current superposition is few, there are no relevant test method.
Summary of the invention
Based on this, do not bear the testing program of alternating current-direct current superposition and the problem of corresponding test unit for above-mentioned GIS equipment, the utility model proposes a kind of GIS equipment test device.
Its technical scheme is as follows:
A kind of GIS equipment test device, comprise GIS apparatus casing, be arranged on three conductors in described GIS apparatus casing, on described conductor, be at least equipped with two insulators, the AC power being electrically connected with the end of three described conductors, one corresponding connection of every described conductor and described AC power, apply High AC voltage by described AC power to the conductor in GIS equipment, and the direct supply generator being electrically connected with described GIS device housings, apply high-voltage dc voltage by described direct supply generator to GIS device housings.
Apply alternating voltage by high-voltage ac power to the conductor in GIS equipment respectively, apply DC voltage by high-voltage DC power supply to GIS device housings, thereby realize and apply alternating current-direct current superimposed voltage to GIS equipment, with the ability of test GIS equipment withstand long term exposure combined-voltage, and without developing special experiment power supply generator and adopting converter power transformer to apply the combined-voltage of stack to GIS equipment, can utilize existing equipment to realize test and can reduce again experimentation cost.Avoid voltage because after converter power transformer simultaneously, affected the problem of test findings accuracy thereby distortion occurs waveform; Also avoided in addition the research and development because adopting correlation test device (as special experiment power supply generator) to make problem long in time limit, expense is high, the Technical Economy of scheme is poor.
Below its further technical scheme is described:
Preferably, described AC power comprises AC power generator, and the step-up transformer being connected with described AC power generator, and described step-up transformer is connected with described conductor.Because GIS equipment is generally applied in hyperbaric environment, utilize AC power generator to produce alternating current herein, recycling step-up transformer boosted voltage, environment when simulated high-pressure transmission of electricity is tested.
Preferably, described insulator is three phase isolated, is provided with three mounting holes on described three phase isolated, and every described conductor is through a described mounting hole.Three conductors are simultaneously through three phase isolated, and test unit can be tested in this case, and the electric charge of three phase isolated in GIS equipment under the effect of tolerance alternating current-direct current superimposed voltage built up situation, detects its insulating property.
Preferably, wherein at least one described conductor has extension, is at least equipped with a single phase isolator on described extension.At least one in many conductors extends through a single phase isolator, test unit can be tested in this case, the electric charge of single phase isolator in GIS equipment under the effect of tolerance alternating current-direct current superimposed voltage built up situation, can detect three phase isolated that is located on identical conductor and the insulating property of single phase isolator simultaneously.
Preferably, described insulator is single phase isolator, is at least equipped with two described single phase isolators on every described conductor.In this case, each conductor is arranged in different spaces, on at least two positions of every conductor, wear respectively a single phase isolator, can detect single phase isolator in GIS equipment under the effect of tolerance alternating current-direct current superimposed voltage electric charge build up situation, to detect its insulating property.
Preferably, also comprise insulating base, described insulating base comprises the mounting platform of installing described GIS apparatus casing, the multiple insulation columns that are connected with described mounting platform, and the mounting base being connected with described insulation column.In the ordinary course of things, GIS equipment needs ground connection while test, but in this testing program, GIS device housings is connected with high voltage direct current, therefore needing to design special insulating base keeps apart GIS equipment and ground, in process of the test, also must take necessary safety practice, with warranty test personnel's safety simultaneously.
The utlity model has following outstanding advantage:
1, can utilize existing testing equipment to produce the required alternating current-direct current stack trial voltage of test, the accuracy of warranty test result;
2, avoid the testing equipment that development and procurement is new, save duration and expense;
3, the versatility of this testing program is good, all can adopt this testing program for the test of similar operating mode.
Brief description of the drawings
Fig. 1 is the cross-sectional schematic of the device of GIS equipment test described in the utility model embodiment;
Fig. 2 is the main cross-sectional schematic of the device of GIS equipment test described in the utility model embodiment;
Fig. 3 is that schematic diagram is looked on the left side of GIS equipment test device described in the utility model embodiment.
Description of reference numerals:
100-GIS apparatus casing, 110-conductor, 120-three phase isolated, 130-single phase isolator, 200-insulating base, 210-mounting platform, 220-insulation column, 230-mounting base, 300-AC power, 400-direct supply.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated.
As shown in Figure 1 to Figure 3, a kind of GIS equipment test device, comprise GIS apparatus casing 100, be arranged on three conductors 110 in GIS apparatus casing 100, on conductor 110, be at least equipped with two disc insulators, the AC power 300 being electrically connected with the end of three conductors 110, a corresponding connection of every conductor 110 and AC power 300, and the direct supply 400 being electrically connected with GIS device housings 100.
Apply alternating voltage to the conductor 110 in GIS equipment by high-voltage ac power 300 respectively, apply DC voltage to GIS device housings 100 by high-voltage DC power supply 300, thereby realize the object that applies alternating current-direct current superimposed voltage to the disc insulator being connected with conductor 110 in GIS equipment, with the ability of test GIS equipment withstand long term exposure combined-voltage, and without developing special experiment power supply generator and adopting converter power transformer to apply the combined-voltage of stack to GIS equipment, can utilize existing equipment to realize test and can reduce again experimentation cost.Avoid voltage because after converter power transformer simultaneously, affected the problem of test findings accuracy thereby distortion occurs waveform; Also avoided in addition the research and development of correlation test device (as special experiment power supply generator) to make problem long in time limit, expense is high, the Technical Economy of scheme is poor.
In one case, each conductor 110 is arranged in different GIS apparatus casing 100 spaces, at at least two places, (the general end position near conductor 110 in this position) wears respectively a single phase isolator 130 (being disc insulator) to every conductor 110, every conductor 110 passes the center position of this single phase isolator 130, makes like this voltage on insulator, act on more rationally evenly.And between two single phase isolators 130, form an enclosure space, insulation gas filled in this space, form insulation insulation blocking space.In this case, apply combined-voltage by the single phase isolator 130 wearing in the single conductor 110 in different spaces, can detect single phase isolator 130 in the GIS equipment electric charge under the effect of withstand long term exposure alternating current-direct current superimposed voltage and gather situation, to detect its insulating property.
In the second situation, insulator is three phase isolated 120, on this three phase isolated 120, be provided with three mounting holes, these three mounting holes are evenly arranged on three phase isolated 120, every conductor 110 is through a mounting hole, the effect voltage that every conductor 110 is subject to is more evenly reasonable, and three conductors 110 are arranged in the same space in GIS apparatus casing 100.The alterating and direct current of stack is applied on three phase isolated 120 that many conductors 110 pass simultaneously, test unit can be tested in this case, the electric charge of three phase isolated 120 in GIS equipment under the effect of withstand long term exposure alternating current-direct current superimposed voltage gathers situation, detects its insulating property.
Also having a kind of situation is that GIS equipment has single conductor installing space simultaneously, situation during with many (three) conductor installing spaces, on the basis of the second situation, three conductors 110 wherein at least one conductor 110 have extension, and on this extension, at least at a position, (general near end position) locates to be equipped with single phase isolator 130.In this case, test unit can not only be tested single phase isolator 130 in the GIS equipment electric charge under the effect of withstand long term exposure alternating current-direct current superimposed voltage and gather situation, can also detect heterogeneous insulator 120 in the GIS equipment electric charge under the effect of withstand long term exposure alternating current-direct current superimposed voltage and gather situation, can detect the heterogeneous insulator 120 that is located on identical conductor 110 and the insulating property of single phase isolator 130 simultaneously.
This GIS equipment test device also comprises insulating base 200, this insulating base 200 comprises the mounting platform 210 of installing GIS apparatus casing 100, the multiple insulation columns 220 that are connected with mounting platform 210, and the mounting base 230 being connected with insulation column 220, by mounting base 230, whole device is fixed on the ground.In the ordinary course of things, GIS equipment needs ground connection while test, but in this testing program, GIS device housings 100 is connected with high voltage direct current, therefore needing to design insulating base keeps apart GIS equipment and ground, in process of the test, also must take necessary safety practice, with warranty test personnel's safety simultaneously.
The utility model also proposes a kind of GIS equipment test method, comprises the steps:
Test is arranged on GIS equipment on insulating base 200 before carrying out.When high-potting, make test unit equipment and ground insulation, to ensure the personal safety of testing crew;
Then, apply alternating voltage to the conductor 110 in GIS equipment, apply DC voltage to GIS apparatus casing 100.Directly apply High Level AC Voltage to the conductor 110 in GIS equipment by existing AC power 300, directly apply high voltage direct current to GIS apparatus casing 100 by existing direct supply 400.Specifically apply High AC voltage by AC power generator and step-up transformer to the conductor 110 in GIS equipment, can apply alternating voltage to the disc insulator being connected with conductor 110 (comprising single phase isolator 130 and three phase isolated 120), apply high-voltage dc voltage by direct supply generator to GIS device housings 100 simultaneously, can apply DC voltage to the disc insulator being connected with GIS device housings 100 and conductor 110, apply alternating current and direct current thereby realize the stack to disc insulator.Here be all to utilize existing AC power and direct supply to test, do not need the special supply unit of design in addition;
Service test instrument detects the electric charge accumulated amount on disc insulator (comprising single phase isolator 130 and the three phase isolated 120) surface in GIS equipment.GIS equipment is being applied after the alternating voltage and DC voltage of stack, utilizing test apparatus to observe the electric charge accumulated amount of the insulator surface in GIS equipment, the insulating property when observing its withstand long term exposure high voltage ac/dc voltage.
Testing latter stage, applying surge voltage to GIS equipment.By finally applying surge voltage, can check whether the insulating property of GIS device interior wreck.
Particularly, be chosen in to apply on GIS equipment and exchange 166kV voltage and the direct current 14kV voltage that superposes is that example is introduced the utility model scheme, voltage swing does not affect this testing program, only introduces with this voltage gradation.Three conductors are applied to the alternating voltage (line voltage) of 166kV, single-phase conductor is applied the alternating voltage of 95kV, on the housing of GIS equipment, apply the DC voltage of 14kV simultaneously, observe the electric charge accumulated amount on disc insulator (comprising single phase isolator 130 and three phase isolated 120) surface by utilizing test apparatus, detect its insulating property under long-term alterating and direct current superposition, find the disc insulator that will detect for test like this, just equivalence has applied the DC voltage of the alternating voltage stack 14kV of 95kV, has reached test objective.Can by this testing program proof theory, think under combined-voltage acts on simultaneously, as long as there is voltage (being alternating current-direct current superimposed voltage) zero crossing herein, the electric charge on disc insulator gathers the situation that situation can be more favourable to its insulating property.
The above embodiment has only expressed embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (6)
1. a GIS equipment test device, it is characterized in that, comprise GIS apparatus casing, be arranged on three conductors in described GIS apparatus casing, on described conductor, be equipped with at least two insulators, the AC power being electrically connected with the end of three described conductors, one corresponding connection of every described conductor and described AC power, apply High AC voltage by described AC power to the conductor in GIS equipment, and the direct supply generator being electrically connected with described GIS device housings, apply high-voltage dc voltage by described direct supply generator to GIS device housings.
2. GIS equipment test device according to claim 1, is characterized in that, described AC power comprises AC power generator, and the step-up transformer being connected with described AC power generator, and described step-up transformer is connected with described conductor.
3. GIS equipment test device according to claim 1, is characterized in that, described insulator is three phase isolated, is provided with three mounting holes on described three phase isolated, and every described conductor is through a described mounting hole.
4. GIS equipment test device according to claim 3, is characterized in that, wherein at least one described conductor has extension, is at least equipped with a single phase isolator on described extension.
5. GIS equipment test device according to claim 1, is characterized in that, described insulator is single phase isolator, is at least equipped with two described single phase isolators on every described conductor.
6. according to the GIS equipment test device described in claim 1-5 any one, it is characterized in that, also comprise insulating base, described insulating base comprises the mounting platform of installing described GIS apparatus casing, the multiple insulation columns that are connected with described mounting platform, and the mounting base being connected with described insulation column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420198122.1U CN203870201U (en) | 2014-04-22 | 2014-04-22 | Gis equipment test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420198122.1U CN203870201U (en) | 2014-04-22 | 2014-04-22 | Gis equipment test device |
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| Publication Number | Publication Date |
|---|---|
| CN203870201U true CN203870201U (en) | 2014-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420198122.1U Expired - Fee Related CN203870201U (en) | 2014-04-22 | 2014-04-22 | Gis equipment test device |
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| CN (1) | CN203870201U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104849630A (en) * | 2015-05-11 | 2015-08-19 | 国家电网公司 | Device for measuring gas insulated combination switch basin insulator defect |
-
2014
- 2014-04-22 CN CN201420198122.1U patent/CN203870201U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104849630A (en) * | 2015-05-11 | 2015-08-19 | 国家电网公司 | Device for measuring gas insulated combination switch basin insulator defect |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA ENERGY ENGINEERING GROUP GUANGDONG ELECTRIC Free format text: FORMER NAME: CHINA ENERGY ENGINEERING GROUP GUANGDONG ELECTRIC POWER DESIGN INSTITUTE |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 510663 Luogang District, Guangdong, Guangzhou Science City Fung Road, No. 1, No. Patentee after: Company limited of China Energy Engineering Group Guangdong Electric Power Design Institute Address before: 510663 Luogang District, Guangdong, Guangzhou Science City Fung Road, No. 1, No. Patentee before: Guangdong Electric Power Design Institute of CEEC |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141008 Termination date: 20210422 |
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| CF01 | Termination of patent right due to non-payment of annual fee |