CN203310362U - Vacuum circuit breaker contactor opening and closing position detection device - Google Patents
Vacuum circuit breaker contactor opening and closing position detection device Download PDFInfo
- Publication number
- CN203310362U CN203310362U CN2013203532097U CN201320353209U CN203310362U CN 203310362 U CN203310362 U CN 203310362U CN 2013203532097 U CN2013203532097 U CN 2013203532097U CN 201320353209 U CN201320353209 U CN 201320353209U CN 203310362 U CN203310362 U CN 203310362U
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- copper foil
- circuit breaker
- vacuum
- vacuum circuit
- processing unit
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Abstract
The utility model provides a vacuum circuit breaker contactor opening and closing position detection device. The device is composed of a copper foil, an electric field sensor and a detection and processing unit. The copper foil is attached to the surface of a vacuum circuit breaker and is level with a shield. The copper foil is connected with the input end of the detection and processing unit through a wire. When opening and closing are carried out on a contactor of the vacuum circuit breaker, the capacitance on the shield makes changes. By detecting the size of the induction electric field of the copper foil at the shield on the surface of the vacuum circuit breaker, the capacitance value of the shield is calculated, and the opening and closing position of the contactor is determined. The detection device provided by the utility model has the advantages of simple structure, convenient use, low cost and high measuring sensitivity.
Description
Technical field
The utility model relates to the method and apparatus that a kind of Contact Breaking/Making Operations gate position detects, and particularly a kind of method and apparatus of contacts for vacuum-break switches divide-shut brake position probing, belong to detection field.
Background technology
Along with expanding economy, science and technology and the raising of the level of IT application and becoming increasingly conspicuous of global resources and environmental problem, the reliable power supply of electrical network becomes extremely important to the user.Carry forward vigorously the electrical network intellectuality and become the new challenge under current China power grid construction situation.The integral body that strong intelligent grid consists of afterwards various power equipment intellectualities, the intellectuality of so-called power equipment does not represent the change of this equipment ultimate principle, and refers to status visualization and the observing and controlling digitizing of equipment and appurtenances thereof.Sensor, controller and interface thereof have become the indispensable part of smart machine.The maintenance based on reliability of wideling popularize at present is a kind of new evaluation criteria according to equipment state and reliability proposition, is the improvement to repair based on condition of component.Require novel monitoring device continuously the duty of High-Voltage Electrical Appliances to be fed back to the staff.Vacuum circuit breaker is switchgear important in a kind of electrical network, and its effect in electrical network is: close power circuit, to carry and to switch electric load; From system, exiting faulty equipment and faulty line, guarantee power system security, normal operation.Along with going deep into that vacuum circuit breaker is studied, the researchist finds that the Contact Breaking/Making Operations gate position in arc-chutes can be used to understand the dynamic change of vacuum extinction chamber interior, and the operation conditions of assessment vacuum circuit breaker, stablize significant to guaranteeing operation of power networks.Prior art generally adopts the method that detects auxiliary contact, however the method the Mechanical Reliability of auxiliary contact is had relatively high expectations, in case there was a mechanical failure, can't realize the detection of Contact Breaking/Making Operations gate position.Therefore the detection of divide-shut brake position, contacts for vacuum-break switches position is more and more obtained people's attention.
Summary of the invention
The deficiency Contact Breaking/Making Operations gate position detected in order to overcome prior art, the utility model provides a kind of device of contacts for vacuum-break switches divide-shut brake position probing, makes it when not changing vacuum arc extinguish chamber structure, detect contact position.The utility model apparatus structure is simple, practical safe ready, cost is low, measuring accuracy is high, on the insulating property of arc-chutes and isolating switch without impact.
A kind of method of contacts for vacuum-break switches divide-shut brake position probing, while utilizing contacts for vacuum-break switches deciliter, electric capacity on radome can change, Copper Foil is attached to the radome position of vacuum circuit breaker outside surface, when contact in the vacuum arc-extinguishing chamber of circuit breaker moves, capacitance on the arc-chutes radome is changed, the induction field on Copper Foil also can respective change, by the electric field value of measuring Copper Foil, can determine the divide-shut brake position of contacts for vacuum-break switches, concrete measuring process is.
The first step, attach Copper Foil and the vacuum circuit breaker surface.
Second step, used wire to connect Check processing unit and Copper Foil.
The 3rd step, adjust the Copper Foil position, makes its position with the arc-chutes radome corresponding.
The 4th step, detect induction field size on Copper Foil, calculates the capacitance values of radome and determine contact position.
For realizing above purpose, the utility model solves the technical scheme that its technical matters adopts and is.
A kind of device of contacts for vacuum-break switches divide-shut brake position probing comprises: Copper Foil, vacuum circuit breaker, Check processing unit is characterized in that.
Described Copper Foil is attached at the vacuum circuit breaker surface, and contour with radome, and Copper Foil is connected on the input end of Check processing unit through wire.
Described Check processing unit is comprised of electric-field sensor, single-chip microcomputer and support circuit, wherein electric-field sensor is for detection of the Electric Field Numerical on Copper Foil and measurement data is passed to single-chip microcomputer, and single-chip microcomputer is processed measurement data and definite Contact Breaking/Making Operations gate position.
Described Check processing unit can carry out the teledata transmitting-receiving.
The electric-field sensor of described Check processing unit is integrated can produce the signal generating circuit of a low-frequency sine, and its frequency can be regulated by the resistance be connected on external pin, and frequency is usually within the ISM of 120-130KHz wavelength band.Sinusoidal wave harmonic content is very low, can avoid producing humorous wave interference.Simultaneously, sensor internal produces the peak-peak output voltage of a 5V, and is that analog switch feeds back on electrode pin by internal resistance.Due to the falling of voltage on internal resistance, on pin, the amplitude of signal will reduce with output current, and the detector of sensor internal can convert the alternating voltage collected to DC level output.
Compared with prior art, the beneficial effects of the utility model are.
Without impact, the detection Copper Foil attaches the outside surface with isolating switch on the design of vacuum circuit-breaker arc extinguishing chamber inner structure, and whole testing process can not affect the insulating property of isolating switch integral body.Utilize the electric-field sensor in the Check processing unit detect the induction field value on Copper Foil and calculate the now capacitance of radome, thereby determine the divide-shut brake position of contact in arc-chutes.
The accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described further.
Fig. 1 is the structural representation of the utility model device.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below embodiment of the present utility model is done further and explained in detail.
As shown in Figure 1, the device of this contacts for vacuum-break switches divide-shut brake position probing, include Copper Foil 3, vacuum circuit breaker, Check processing unit 4, and wherein Copper Foil 3 is attached at the vacuum circuit breaker surface, and contour with radome 2, Copper Foil 3 is connected on the input end of Check processing unit 4 through wire.The utility model is by Copper Foil 3 and the laminating of vacuum circuit breaker outside surface, and the radome 2 of regulating in its position and arc-chutes 1 is contour, the induction field value that Check processing unit 4 detects on Copper Foil, when the interior contact motion of vacuum arc-extinguishing chamber of circuit breaker 1, capacitance on radome 2 in arc-chutes 1 is changed, the induction field on Copper Foil 3 also can respective change, therefore the utility model changes by the electric field value of the Copper Foil 3 of measurement vacuum circuit breaker outer surface shield cover position, can determine the divide-shut brake position of contacts for vacuum-break switches.
Example.
If when contact closed a floodgate, the induction field value on Copper Foil was
U1, during the contact separating brake, the induction field value on Copper Foil is
U2, judgement divide-shut brake nargin is
k%, during contact action, the electric field value on the Copper Foil detected is
U.
(1) when
The time, think that contact successfully closes a floodgate.
(2) when
The time, think contact success separating brake.
(3) when
The time, think that the reasons such as there was a mechanical failure cause the failure of contact separating brake.
Although by reference some preferred implementation of the present utility model, the utility model is illustrated and describes, but those of ordinary skill in the art should be understood that can be in form or branch road quantitatively it is done to various changes, and do not depart from spirit and scope of the present utility model.
Claims (3)
1. the device of a contacts for vacuum-break switches divide-shut brake position probing, it is characterized in that: include Copper Foil, vacuum circuit breaker, Check processing unit, wherein said Copper Foil is attached to the vacuum circuit breaker surface, and contour with radome, described Copper Foil is connected with the input end of Check processing unit through wire.
2. the pick-up unit of contacts for vacuum-break switches divide-shut brake according to claim 1 position, it is characterized in that: the Check processing unit is comprised of electric-field sensor, single-chip microcomputer and support circuit, wherein electric-field sensor is for detection of the Electric Field Numerical on Copper Foil and measurement data is passed to single-chip microcomputer, and single-chip microcomputer is processed measurement data and definite Contact Breaking/Making Operations gate position.
3. the pick-up unit of contacts for vacuum-break switches divide-shut brake according to claim 2 position, it is characterized in that: the electric-field sensor of described Check processing unit is integrated with the signal generating circuit that can produce a low-frequency sine, its frequency is regulated by the resistance be connected on external pin, within the ISM of 120-130KHz wavelength band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203532097U CN203310362U (en) | 2013-06-20 | 2013-06-20 | Vacuum circuit breaker contactor opening and closing position detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203532097U CN203310362U (en) | 2013-06-20 | 2013-06-20 | Vacuum circuit breaker contactor opening and closing position detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203310362U true CN203310362U (en) | 2013-11-27 |
Family
ID=49616565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203532097U Expired - Fee Related CN203310362U (en) | 2013-06-20 | 2013-06-20 | Vacuum circuit breaker contactor opening and closing position detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203310362U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104241008A (en) * | 2013-06-20 | 2014-12-24 | 沈阳工业大学 | Method and device for detecting breaking and closing positions of vacuum circuit breaker contacts |
| CN105423887A (en) * | 2015-12-18 | 2016-03-23 | 江苏森源电气股份有限公司 | System for collecting displacements of breaker contact terminal and method for collecting displacements of breaker contact terminal |
| CN115184785A (en) * | 2022-06-23 | 2022-10-14 | 苏州西门子电器有限公司 | Test method, test system and electronic device |
-
2013
- 2013-06-20 CN CN2013203532097U patent/CN203310362U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104241008A (en) * | 2013-06-20 | 2014-12-24 | 沈阳工业大学 | Method and device for detecting breaking and closing positions of vacuum circuit breaker contacts |
| CN104241008B (en) * | 2013-06-20 | 2017-03-22 | 沈阳工业大学 | Method and device for detecting breaking and closing positions of vacuum circuit breaker contacts |
| CN105423887A (en) * | 2015-12-18 | 2016-03-23 | 江苏森源电气股份有限公司 | System for collecting displacements of breaker contact terminal and method for collecting displacements of breaker contact terminal |
| CN115184785A (en) * | 2022-06-23 | 2022-10-14 | 苏州西门子电器有限公司 | Test method, test system and electronic device |
| CN115184785B (en) * | 2022-06-23 | 2024-05-07 | 苏州西门子电器有限公司 | Test method, test system and electronic equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131127 Termination date: 20160620 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |