CN206178105U - Breaker closing resistance drops into process contact spring detection device - Google Patents
Breaker closing resistance drops into process contact spring detection device Download PDFInfo
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- CN206178105U CN206178105U CN201621273641.5U CN201621273641U CN206178105U CN 206178105 U CN206178105 U CN 206178105U CN 201621273641 U CN201621273641 U CN 201621273641U CN 206178105 U CN206178105 U CN 206178105U
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- breaker
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- piston
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- 238000001514 detection method Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000003068 static effect Effects 0.000 claims description 13
- BALXUFOVQVENIU-KXNXZCPBSA-N pseudoephedrine hydrochloride Chemical compound [H+].[Cl-].CN[C@@H](C)[C@@H](O)C1=CC=CC=C1 BALXUFOVQVENIU-KXNXZCPBSA-N 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 3
- 206010017076 Fracture Diseases 0.000 description 44
- 208000010392 Bone Fractures Diseases 0.000 description 42
- 238000011156 evaluation Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000003556 assay Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
Abstract
The utility model provides a breaker closing resistance drops into process contact spring detection device, including direct voltage source, circuit breaker, resistance box and high -speed oscilloscope, direct voltage source and circuit breaker and resistance box be the series connection in proper order, and high -speed oscilloscope connects at the both ends of resistance box, the direct current source provides the DC voltage for circuit breaker and resistance box, the circuit breaker includes the branch road that combined floodgate resistance and supplementary fracture are established ties and is formed, and the main fracture of circuit breaker is parallelly connected with the branch road that combined floodgate resistance and the series connection of supplementary fracture formed, high -speed oscilloscope is used for acquireing the resistance box and drops into the voltage signal of in -process at breaker closing resistance, simple structure, and convenient to use utilizes supplementary fracture contact spring when detecting combined floodgate resistance and dropping into the wave form signal and diagnose combined floodgate resistance to drop into, can go up on the basis that the tradition detected the parameter and diagnose the state of the supplementary fracture of circuit breaker, can discover supplementary fracture contact input that the conventional testing means are difficult to the discovery hidden danger of bouncing.
Description
Technical field
The utility model belongs to breaker detection field, specifically a kind of breaker closing resistance input process contact bounce
Detection means.
Background technology
Switching-on resistance is super-pressure, the important component of breaker in extra high voltage, preferably limiting AC system can be closed a floodgate
Overvoltage.In 500kV supergrids, the dielectric level of grid equipment is to allow overvoltage level for 2.0p.u..Extra-high
It is the cost for further reducing apparatus insulated aspect in voltage electric grid, cost-effective, the overvoltage level that extra-high voltage grid is allowed enters
One step is reduced to 1.7p.u..Therefore in super-pressure and extra-high voltage, because the margin of safety of Insulation Coordination design is relatively low, to protect
The safety of power network is demonstrate,proved, the overvoltage for taking measures to suppress to be produced during breaker operator is needed in power network, usually require that breaker is filled
If switching-on resistance, to prevent from closing the switching overvoltage that harm power grid security is produced during unloaded line long.
Switching-on resistance is instantaneous work, it is impossible to for a long time by high current, is generally used for switching on and off the disconnected of switching-on resistance
Mouthful, do not possess arc-suppression function.Because the electric current that switching-on resistance is flowed through when closing a floodgate is very big, if switching-on resistance contact is constituted in input
It is middle exist spring or contact unstable, gently then breaker closing when suppress overvoltage effect it is bad, heavy then switching-on resistance will be short
Heavy current impact is repeatedly received in time, characteristic is possible to change or damage, in the case where switching-on resistance has defect,
If continuing to run with, circuit breaker explosion may be caused, there is great potential safety hazard.In recent years, be there occurs in power network a lot of
Because of device damage accident caused by switching-on resistance failure, and traditional detection means is only capable of detection switching-on resistance value, switching-on resistance
Two parameters of total making time, it is difficult to spring problem when reflecting that switching-on resistance puts into.The spring inspection of auxiliary fracture contact at present
Survey in power network fortune inspection using less.
In conventional detection, it is only capable of detecting total making time of switching-on resistance using conventional meanses such as testing mechanical characteristics,
But aid in the spring situation of fracture contact to be monitored during cannot being put into switching-on resistance.
The content of the invention
The utility model discloses a kind of breaker closing resistance input process contact bounce detection means, real-time monitoring is broken
The spring situation of auxiliary contact during the device switching-on resistance input of road.
The technical solution of the utility model：
A kind of breaker closing resistance puts into process contact bounce detection means, including direct voltage source, breaker, resistance
Case and high-speed oscilloscope, direct voltage source are sequentially connected in series with breaker and resistance box, and high-speed oscilloscope is connected to resistance box
Two ends, the DC current source provides DC voltage for breaker and resistance box, and the breaker includes switching-on resistance and auxiliary
Fracture is helped to connect the branch road to be formed, the main fracture of breaker is connected the branch circuit parallel connection to be formed, institute with switching-on resistance and auxiliary fracture
High-speed oscilloscope is stated for obtaining voltage signal of the resistance box during breaker closing resistance input.
The auxiliary fracture includes auxiliary fracture piston-cylinder apparatus, auxiliary fracture static contact, auxiliary fracture moving contact, auxiliary
Fracture moving contact is connected with piston and is promoted by piston, auxiliary fracture static contact connection auxiliary fracture piston-cylinder apparatus.
The main fracture includes the quiet main contact being arranged on contact base and the dynamic main contac being connected with piston.
Back-moving spring is provided with the auxiliary fracture piston-cylinder apparatus.
Technique effect of the present utility model：Simple structure, it is easy to use, using detect switching-on resistance input waveform signal come
Diagnosis switching-on resistance aids in fracture contact bounce when putting into, can be on the basis of traditional detection parameter to breaker auxiliary fracture
State is diagnosed, and by the monitoring and analysis of the input waveform to switching-on resistance, breaker auxiliary fracture is carried out diagnostic
Detection and state evaluation, it is possible to find the indiscoverable auxiliary fracture contact input spring hidden danger of conventional detection means.
Brief description of the drawings
Fig. 1 is the utility model overall structure diagram；
Fig. 2 is the parallel switching-on resistance arc-extinguishing chamber of circuit breaker structure chart of the utility model band；
Fig. 3 is the utility model switching-on resistance input normal voltage oscillogram；
Fig. 4 is high-speed oscilloscope collection voltages oscillogram when the utility model has contact bounce.
Label is represented respectively in figure：1- contact bases, 2- static arc contacts, 3- quiet main contacts, 4- electric capacity, 5- spouts, 6- moves arc
Contact, 7- air cylinders, 8- pistons, 9- piston rods, 10- dynamic main contacs, 11- auxiliary fracture moving contacts, 12- auxiliary fracture stationary contacts
Head, 13- auxiliary fracture piston-cylinder apparatuses, 14- radomes, 15- assembling resistance, 100- direct voltage sources, 200- breakers, 300-
Switching-on resistance, 400- main fractures, 500- auxiliary fractures, 600- resistance boxes, 700- high-speed oscilloscopes.
Specific embodiment
The utility model is further illustrated below in conjunction with the accompanying drawings：
As shown in figure 1, a kind of breaker closing resistance input process contact bounce detection means, including direct voltage source
100th, breaker 200, resistance box 600 and high-speed oscilloscope 700, direct voltage source 100 and breaker 200 and resistance box 600 according to
Secondary to be connected in series, high-speed oscilloscope 700 is connected to the two ends of resistance box 600, and the DC current source 100 is the He of breaker 200
Resistance box 600 provides DC voltage, and the breaker 200 includes the branch that switching-on resistance 300 and the auxiliary series connection of fracture 500 are formed
Road, the main fracture 400 of breaker connect the branch circuit parallel connection of formation, the high speed oscillography with switching-on resistance 300 and auxiliary fracture 500
Device 700 is used to obtain voltage signal of the resistance box 600 during breaker closing resistance input.
As shown in Fig. 2 auxiliary fracture 500 includes that auxiliary fracture piston-cylinder apparatus 13, auxiliary fracture static contact 12, auxiliary are disconnected
Mouth moving contact 11, auxiliary fracture moving contact 11 is connected with piston 8 and is promoted by piston 8, and auxiliary fracture static contact 12 connects auxiliary
Fracture piston-cylinder apparatus 13.
Main fracture 400 includes the quiet main contact 3 being arranged on contact base 1 and the dynamic main contac 10 being connected with piston.
Back-moving spring is provided with auxiliary fracture piston-cylinder apparatus 13.
Also include static arc contact 2 and moving arcing contact 6 and spout 5 and air cylinder 7, band with parallel switching-on resistance breaker
Electric capacity 4 and assembling resistance 15 are set in parallel switching-on resistance breaker arc extinguishing room, are gone out with parallel switching-on resistance breaker
The piston connection piston rod 9 of arc chamber, sets radome 14 and is used to shield external electrical with parallel switching-on resistance arc-extinguishing chamber of circuit breaker
Arc.
Auxiliary stationary contact rostral has back-moving spring, during closing operation, when dynamic side contact is connect with the speed of about 3m/s and static contact
When touching, when moving contact just clashes into static contact, back-moving spring is compressed, and reactive spring force produces one to be touched to dynamic to static contact
The power in head direction, moving contact is in the case where mechanism drives again against static contact to quiet lateral movement.
By Fig. 1, during breaker closing, auxiliary fracture is first closed, and switching-on resistance R1 is accessed, the voltage U1=U* of resistance box R2
R2/（R1+R2）.
By after about 10ms, arc-chutes main fracture is closed, by switching-on resistance R1 short circuits, the voltage U2=U of resistance box R2.I.e.
Under normal circumstances, if aiding in fracture contact without spring during switching-on resistance input, resistance box R2 is in breaker closing process
In voltage waveform should substantially shown in Fig. 3, when voltage is U1 and during U2, voltage waveform is continuous and without breakpoint.
If aiding in fracture contact to there is spring during switching-on resistance input, voltage then fails to be always held at U1 or U2,
Repeatedly there is Voltage Drop to null value, Wave anomaly.The voltage waveform of high-speed oscilloscope collection is as shown in Figure 4.
This kind of situation is during breaker closing, occur spring situation during input when experiment is detected.Close a floodgate
Dock contact occurs in that small spring during resistance switching, and dynamic and static contact has the breakpoint of moment.Switching-on resistance is not reliable
Input, there is the situation of loose contact, disconnected during test loop, when and connect, cause resistance box R2 voltages repeatedly to fall
Then normal value is returned to zero again.
By to switching-on resistance input waveform monitoring with analysis, to breaker auxiliary fracture carry out diagnostic assays with
State evaluation.Input waveform based on switching-on resistance, can find to aid in the spring problem of fracture contact in time.
A kind of breaker closing resistance input process contact bounce detection means of the present utility model, simple structure is used
It is convenient, diagnosed when switching-on resistance puts into using switching-on resistance input waveform signal is detected and aid in fracture contact bounce, can pass
State on the basis of system detection parameter to breaker auxiliary fracture is diagnosed, by the prison of the input waveform to switching-on resistance
Survey and analyze, diagnostic assays and state evaluation are carried out to breaker auxiliary fracture, it is possible to find conventional detection means are difficult to find
Auxiliary fracture contact input spring hidden danger.
Claims (4)
1. a kind of breaker closing resistance puts into process contact bounce detection means, it is characterised in that：Including direct voltage source, break
Road device, resistance box and high-speed oscilloscope, direct voltage source are sequentially connected in series with breaker and resistance box, high-speed oscilloscope connection
At the two ends of resistance box, the DC current source provides DC voltage for breaker and resistance box, and the breaker includes closing a floodgate
Resistance and auxiliary fracture are connected the branch road to be formed, and the main fracture of breaker and switching-on resistance and aid in fracture to connect the branch road to be formed
Parallel connection, the high-speed oscilloscope is used to obtain voltage signal of the resistance box during breaker closing resistance input.
2. breaker closing resistance according to claim 1 puts into process contact bounce detection means, it is characterised in that：Institute
Stating auxiliary fracture includes auxiliary fracture piston-cylinder apparatus, auxiliary fracture static contact, auxiliary fracture moving contact, aids in fracture moving contact
It is connected with piston and is promoted by piston, auxiliary fracture static contact connection auxiliary fracture piston-cylinder apparatus.
3. breaker closing resistance according to claim 1 puts into process contact bounce detection means, it is characterised in that：Institute
State the quiet main contact that main fracture is included on contact base and the dynamic main contac being connected with piston.
4. breaker closing resistance according to claim 2 puts into process contact bounce detection means, it is characterised in that：Institute
State in auxiliary fracture piston-cylinder apparatus and be provided with back-moving spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621273641.5U CN206178105U (en) | 2016-11-25 | 2016-11-25 | Breaker closing resistance drops into process contact spring detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621273641.5U CN206178105U (en) | 2016-11-25 | 2016-11-25 | Breaker closing resistance drops into process contact spring detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206178105U true CN206178105U (en) | 2017-05-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621273641.5U Active CN206178105U (en) | 2016-11-25 | 2016-11-25 | Breaker closing resistance drops into process contact spring detection device |
Country Status (1)
| Country | Link |
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| CN (1) | CN206178105U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107845540A (en) * | 2017-11-30 | 2018-03-27 | 厦门理工学院 | A kind of A.C. contactor supervising device and A.C. contactor online monitoring system |
| CN110927568A (en) * | 2019-12-27 | 2020-03-27 | 中国人民解放军海军潜艇学院 | Resistance cabinet and device for checking circuit breaker |
| CN112151301A (en) * | 2020-06-15 | 2020-12-29 | 平高集团有限公司 | Arc extinguish chamber and circuit breaker |
-
2016
- 2016-11-25 CN CN201621273641.5U patent/CN206178105U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107845540A (en) * | 2017-11-30 | 2018-03-27 | 厦门理工学院 | A kind of A.C. contactor supervising device and A.C. contactor online monitoring system |
| CN110927568A (en) * | 2019-12-27 | 2020-03-27 | 中国人民解放军海军潜艇学院 | Resistance cabinet and device for checking circuit breaker |
| CN112151301A (en) * | 2020-06-15 | 2020-12-29 | 平高集团有限公司 | Arc extinguish chamber and circuit breaker |
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