CN103941165A - GIS equipment testing device and method - Google Patents
GIS equipment testing device and method Download PDFInfo
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- CN103941165A CN103941165A CN201410163463.XA CN201410163463A CN103941165A CN 103941165 A CN103941165 A CN 103941165A CN 201410163463 A CN201410163463 A CN 201410163463A CN 103941165 A CN103941165 A CN 103941165A
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Abstract
The invention discloses a GIS equipment testing device and method. The testing device comprises a GIS equipment shell, three conductors, an alternating-current power supply and a direct-current power supply, wherein the three conductors are arranged inside the GIS equipment shell, each conductor is at least provided with two basin-type insulators in a penetrated mode, the alternating-current power supply is electrically connected with the ends of the three conductors, each conductor is correspondingly connected with one phase of the alternating-current power supply, and the direct-current power supply is electrically connected with the GIS equipment shell. According to the GIS equipment testing device and method, alternating-current voltages are exerted to the conductors in GIS equipment through the high-voltage alternating-current power supply, direct-current voltages are exerted to the GIS equipment shell through the high-voltage direct-current power supply, and therefore alternating-current and direct-current superimposed voltages are exerted to the GIS equipment so that capacity, for resisting the alternating-current and direct-current voltages for a long time, of the GIS equipment can be tested.
Description
Technical field
The present invention relates to transmission facility test field, particularly a kind of GIS equipment test device and method.
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 Gas Insulated Switchgear 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 present invention proposes a kind of GIS equipment test device and method.
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 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, and the direct supply being electrically connected with described 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 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 in same 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, every conductor is equipped with single phase isolator at least two places, 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 present invention also proposes a kind of GIS equipment test method, comprises the steps:
Apply alternating voltage to the conductor in GIS equipment, apply DC voltage to GIS apparatus casing.Directly apply High Level AC Voltage by existing AC power to the conductor in GIS equipment, directly apply high voltage direct current by existing direct supply to GIS apparatus casing;
Detect the electric charge accumulated amount on the disc insulator surface in GIS equipment.GIS equipment is being applied after the alternating voltage and DC voltage of stack, utilizing test apparatus to observe the quantity of electric charge on the various disc insulators surface in GIS equipment, the insulating property when observing its withstand long term exposure high voltage ac/dc voltage.
Below its further technical scheme is described:
Preferably, 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.
Preferably, apply High AC voltage by AC power generator and step-up transformer to the conductor in GIS equipment, apply high-voltage dc voltage by direct supply generator to GIS device housings simultaneously.Be all to utilize existing AC power and direct supply to test, do not need the special supply unit of design in addition.
Preferably, test is arranged on GIS equipment on insulating base before carrying out.When high-potting, ensure the personal safety of testing crew.
The present invention has advantages of following outstanding:
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 equipment test of GIS described in embodiment of the present invention device;
Fig. 2 is the main cross-sectional schematic of the equipment test of GIS described in embodiment of the present invention device;
Fig. 3 is that schematic diagram is looked on the equipment test device of GIS described in an embodiment of the present invention left side.
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, embodiments of the invention are elaborated.
As shown in Figure 1 to Figure 3, the present invention proposes 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 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 present invention 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 present invention program, 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 the specific embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (9)
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, a corresponding connection of every described conductor and described AC power, and the direct supply being electrically connected with described GIS device housings.
2. 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.
3. GIS equipment test device according to claim 2, is characterized in that, wherein at least one described conductor has extension, is at least equipped with a single phase isolator on described extension.
4. 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.
5. according to the GIS equipment test device described in claim 1-4 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.
6. a GIS equipment test method, is characterized in that, comprises the steps:
Apply alternating voltage to the conductor in GIS equipment, apply DC voltage to GIS apparatus casing;
Detect the electric charge accumulated amount on the disc insulator surface in GIS equipment.
7. GIS equipment test method according to claim 6, is characterized in that, is testing latter stage, applies surge voltage to GIS equipment.
8. GIS equipment test method according to claim 6, it is characterized in that, apply High AC voltage by AC power generator and step-up transformer to the conductor in GIS equipment, apply high-voltage dc voltage by direct supply generator to GIS device housings simultaneously.
9. GIS equipment test method according to claim 6, is characterized in that, test is arranged on GIS equipment on insulating base before carrying out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410163463.XA CN103941165B (en) | 2014-04-22 | 2014-04-22 | GIS device experimental rig and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410163463.XA CN103941165B (en) | 2014-04-22 | 2014-04-22 | GIS device experimental rig and method |
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| CN103941165A true CN103941165A (en) | 2014-07-23 |
| CN103941165B CN103941165B (en) | 2018-05-01 |
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| CN106646051A (en) * | 2016-12-27 | 2017-05-10 | 中国西电电气股份有限公司 | Lightning arrester testing device and lightning arrester testing method |
| CN109406970A (en) * | 2018-12-10 | 2019-03-01 | 山东电工电气日立高压开关有限公司 | A kind of three-phase integrated Withstand test device of GIS |
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| CN106646051B (en) * | 2016-12-27 | 2019-12-13 | 中国西电电气股份有限公司 | Lightning arrester testing device and method |
| CN109406970A (en) * | 2018-12-10 | 2019-03-01 | 山东电工电气日立高压开关有限公司 | A kind of three-phase integrated Withstand test device of GIS |
| CN109406970B (en) * | 2018-12-10 | 2024-03-08 | 山东电工电气日立高压开关有限公司 | Three-phase integrated withstand voltage test device for GIS |
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| CN103941165B (en) | 2018-05-01 |
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Address after: 510663 Luogang District, Guangdong, Guangzhou Science City Fung Road, No. 1, No. Applicant 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. Applicant before: Guangdong Electric Power Design Institute of CEEC |
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