CN203630264U - Detection device for multi-contact-finger contact state of conductive loop of electrical equipment - Google Patents
Detection device for multi-contact-finger contact state of conductive loop of electrical equipment Download PDFInfo
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- CN203630264U CN203630264U CN201320834003.6U CN201320834003U CN203630264U CN 203630264 U CN203630264 U CN 203630264U CN 201320834003 U CN201320834003 U CN 201320834003U CN 203630264 U CN203630264 U CN 203630264U
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- computing machine
- vacuum contactor
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- 238000001514 detection method Methods 0.000 title abstract 3
- 238000012360 testing method Methods 0.000 claims abstract description 39
- 239000003990 capacitor Substances 0.000 claims abstract description 13
- 230000003750 conditioning effect Effects 0.000 claims abstract description 11
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 4
- 239000010703 silicon Substances 0.000 claims abstract description 4
- 238000003860 storage Methods 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 12
- 238000009666 routine test Methods 0.000 abstract description 6
- 238000009863 impact test Methods 0.000 abstract description 4
- 238000004146 energy storage Methods 0.000 abstract 2
- 230000008569 process Effects 0.000 description 8
- 230000007547 defect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000007423 decrease Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000003449 preventive effect Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004082 amperometric method Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 238000010223 real-time analysis Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
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Abstract
The utility model relates to a detection device for the multi-contact-finger contact state of a conductive loop of electrical equipment, and belongs to high voltage testing devices of the electrical equipment. A relay S1 is electrically connected with a booster T1 via a resistor R1, the booster T1 is also electrically connected with a high voltage silicon stack D1, a vacuum contactor S2, a measuring line resistor R2, a measuring line inductor L1, a measuring loop resistor R3 and a shunt R4 in sequence, an energy storage capacitor C1 is connected in parallel between the vacuum contactor S2 and the shunt R4, the relay S1 is connected with a computer via a data line, a capacitance and voltage conditioning module is respectively connected with the energy storage capacitor C1 and the computer, a current conditioning module is respectively connected with the shunt R4 and the computer, and a contactor driving module is respectively connected with the vacuum contactor S2 and the computer. The detection device is advantageous in that the structure is novel, a high current impact testing method is applied in routine tests delivered by equipment manufacturers and equipment hand-over tests and routine tests, and the portability and the miniaturization of impact test equipment are realized.
Description
Technical field
The utility model belongs to high potential test for electric equipment device.
Background technology
For safe and reliable electric power energy is provided to user, a large amount of GIS combined electrical apparatuses that adopt on power equipment in recent years, because electric equipment adopts enclosed construction, insulating medium adopts SF6, and switch, disconnector, bus connection etc. adopt many contact finger structures.Resistance test dispatch from the factory routine test, commissioning test, preventive trial in power equipment galvanic circle adopts direct current pressure decline method, and measuring current is not less than 100A.New technologies and materials is used, improve the dielectric level of equipment, but the many contact finger structures galvanic circle loose contact accident existing in manufacture, installation process happens occasionally, become the fault that takes place frequently of many contact finger structures such as GIS, switch galvanic circle fault in service, the power equipment such as GIS, switch damages, rehabilitation expense is high, and the accident treatment time is long, has a strong impact on power supply reliability.
To the inspection of the fingertip such as GIS, switch loose contact fault case, the analysis of many contact finger structures, adopt the direct current pressure decline method using at present to test, even if seriously loose contact defect can not check out, equipment belt defect puts into operation, is the reason that causes equipment breakdown.Use the available maximum current 500A of current testing experiment to carry out many contact finger structures loop resistance tests such as GIS, switch, bus connection, the single fingertip contact pre-seting and the serious loose contact defect of contact deficiency still cannot detect.Do not have at present method of testing and device can detect the galvanic circle loose contact defect of many contact finger structures both at home and abroad.
Test current is increased to the rated current of equipment design and extend test period inspection, assert the galvanic circle contact condition of many contact finger structures such as GIS, switch, bus connection, it is the project of switchgear design (pattern), test unit is very heavy, and device fabrication enterprise dispatches from the factory in routine test, the test of handing-over property, preventive trial and adopts and can not realize.
Although the executed of direct current pressure decline method measuring circuit resistance standard for many years, the galvanic circle contact condition of many fingertip contacts is detected and is proved insincere according to act.std diagnosis defect.
Summary of the invention
The utility model provides a kind of electrical equipment galvanic circle many fingertips contact condition pick-up unit, detects the problem that can not accurately judge to solve many fingertips galvanic circle contact condition.
The technical scheme that the utility model is taked is:
Relay S1 is electrically connected with stepup transformer T1 through resistance R 1, this stepup transformer T1 also with high voltage silicon rectifier stack D1, vacuum contactor S2, slotted line resistance R 2, slotted line inductance L 1, measuring circuit resistance R 3, the electrical connection of shunt R4 order, storage capacitor C1 in parallel between vacuum contactor S2 and shunt R4, relay S1 is connected with computing machine by data line, capacitance voltage conditioning module is connected with storage capacitor C1 and computing machine respectively, current regulating module is connected with shunt R4 and computing machine respectively, contactor driver module is connected with vacuum contactor S2 and computing machine respectively, measuring circuit resistance R 3 also with test product terminal voltage conditioning module, data collecting card, computing machine is linked in sequence.
The utility model has the advantage of: novel structure, great current impact test method is applied to routine test, equipment commissioning test, the routine test that equipment manufacturers dispatch from the factory, impact test equipment has been realized portability, miniaturization.
Tested circuit passes into the electric current that is less than impulse test in type approval test project, utilize change in voltage on the contact resistance that the contraction resistance variations of contact resistance under the temporary impact function of current cause to judge fingertip contact condition, overcome the predicament that AC and DC high-current test method cannot be walked out type approval test chamber.
The storage of test process total data, testing crew can carry out real-time analysis and follow-up refinement analysis to the test data between arbitrary test point of test process, any test section, many fingertips of test overall process contact condition changes very clear, on screen, show voltage, electric current, resistance variations overall process waveform, defect judgement is directly perceived..
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model;
Fig. 2 is the utility model contactor driver module circuit theory diagrams;
Fig. 3 is the utility model test product terminal voltage conditioning module circuit theory diagrams;
Fig. 4 is the utility model current regulating modular circuit schematic diagram;
Fig. 5 is the utility model capacitance voltage conditioning module circuit theory diagrams;
Fig. 6 is the utility model workflow diagram.
Embodiment
Relay S
1through resistance R
1with stepup transformer T
1electrical connection, this stepup transformer T
1also with high voltage silicon rectifier stack D
1, vacuum contactor S
2, slotted line resistance R
2, slotted line inductance L
1, measuring circuit resistance R
3, shunt R
4order electrical connection, at vacuum contactor S
2with shunt R
4between storage capacitor C in parallel
1, relay S
1be connected with computing machine 6 by data line, capacitance voltage conditioning module 1 respectively with storage capacitor C
1be connected with computing machine 6, current regulating module 2 respectively with shunt R
4be connected with computing machine 6, contactor driver module 3 respectively with vacuum contactor S
2be connected measuring circuit resistance R with computing machine 6
3also be linked in sequence with test product terminal voltage conditioning module 4, data collecting card 5, computing machine 6.
Principle of work: use single-phase 220V power supply as working power, it is large capacity high voltage capacitor charging that single supply is boosted after rectification, use vacuum contactor capacitor discharge process to be controlled to the stability that guarantees discharge process, adopt high precision shunt resistance to do shunt sampling, guarantee the accuracy of current information amount, computing machine, by these high speed information processings, shows voltage, electric current, resistance variations overall process waveform on screen, for testing crew diagnosis.
Be the charging of high voltage large capcity capacitor to AC-testing supply rectification, use vacuum contactor control capacitor to discharge to tested loop, instantaneous discharge maximum current can reach 18000A.
As Fig. 6, after startup, by requirement of engineering, control mode is set by tester, trial voltage value is set, start process of measurement, system is pressed setting value to capacitor charging control and measuring system voltage simultaneously, when reaching the action of setting value final vacuum contactor, test product is discharged, vacuum contactor conditioning program suppresses contactor adhesive and disconnects the strong electromagnetic producing, electric current is down to 1 o'clock contactor and is opened, device output test voltage, test product terminal voltage, test product current signal is delivered to capture card and is carried out transferring to computing machine after analog to digital conversion, arrange and remove invalid data, data are carried out to filtering noise reduction process, data after treatment are tested terminal voltage, amperometry, program is by the calculated with mathematical model test product resistance of design, test product voltage, electric current and resistance value are presented at computer screen with curve form, Computer Storage measurement data, testing crew check test data, proceeding the next item down according to test job step measures or finishes test and exit software.
Claims (1)
1. electrical equipment galvanic circle many fingertips contact condition pick-up unit, it is characterized in that: relay S1 is electrically connected with stepup transformer T1 through resistance R 1, this stepup transformer T1 also with high voltage silicon rectifier stack D1, vacuum contactor S2, slotted line resistance R 2, slotted line inductance L 1, measuring circuit resistance R 3, the electrical connection of shunt R4 order, storage capacitor C1 in parallel between vacuum contactor S2 and shunt R4, relay S1 is connected with computing machine by data line, capacitance voltage conditioning module is connected with storage capacitor C1 and computing machine respectively, current regulating module is connected with shunt R4 and computing machine respectively, contactor driver module is connected with vacuum contactor S2 and computing machine respectively, measuring circuit resistance R 3 also with test product terminal voltage conditioning module, data collecting card, computing machine is linked in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320834003.6U CN203630264U (en) | 2013-12-18 | 2013-12-18 | Detection device for multi-contact-finger contact state of conductive loop of electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320834003.6U CN203630264U (en) | 2013-12-18 | 2013-12-18 | Detection device for multi-contact-finger contact state of conductive loop of electrical equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203630264U true CN203630264U (en) | 2014-06-04 |
Family
ID=50816726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320834003.6U Expired - Lifetime CN203630264U (en) | 2013-12-18 | 2013-12-18 | Detection device for multi-contact-finger contact state of conductive loop of electrical equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203630264U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103645411A (en) * | 2013-12-18 | 2014-03-19 | 吉林省电力科学研究院有限公司 | Multiple-contact-finger contact status detecting device of electrical device conducting loop |
| CN113358756A (en) * | 2021-07-23 | 2021-09-07 | 水利部交通运输部国家能源局南京水利科学研究院 | Standard unit and method for testing contact state of inner wall of concrete microcrack in vibration excitation |
-
2013
- 2013-12-18 CN CN201320834003.6U patent/CN203630264U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103645411A (en) * | 2013-12-18 | 2014-03-19 | 吉林省电力科学研究院有限公司 | Multiple-contact-finger contact status detecting device of electrical device conducting loop |
| CN113358756A (en) * | 2021-07-23 | 2021-09-07 | 水利部交通运输部国家能源局南京水利科学研究院 | Standard unit and method for testing contact state of inner wall of concrete microcrack in vibration excitation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140604 |