CN203504136U - Novel breaker - Google Patents
Novel breaker Download PDFInfo
- Publication number
- CN203504136U CN203504136U CN201320663818.2U CN201320663818U CN203504136U CN 203504136 U CN203504136 U CN 203504136U CN 201320663818 U CN201320663818 U CN 201320663818U CN 203504136 U CN203504136 U CN 203504136U
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- breaker
- circuit
- data acquisition
- bipolar transistor
- circuit breaker
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- 239000004065 semiconductor Substances 0.000 claims description 5
- 238000002955 isolation Methods 0.000 claims description 3
- 230000001052 transient effect Effects 0.000 abstract description 4
- 230000032683 aging Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 238000010891 electric arc Methods 0.000 description 4
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 101001003135 Homo sapiens Interleukin-13 receptor subunit alpha-1 Proteins 0.000 description 1
- 101001003132 Homo sapiens Interleukin-13 receptor subunit alpha-2 Proteins 0.000 description 1
- 102100020791 Interleukin-13 receptor subunit alpha-1 Human genes 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
A novel breaker is provided; the novel breaker can effectively solve conventional contact arc-starting and contact spring aging problems of a conventional machinery switch, thereby greatly improving switching speed and service life of the switch, and satisfying rigid requirements of power supply reliability and power quality for a sensitive and key load. The novel breaker comprises a breaker arranged between a wire inlet end of a main supply line and a user, also comprises a protection unit, a data acquisition unit and a controller; the protection unit is connected in parallel with the breaker; the data acquisition unit is connected with the breaker and used for collecting electric signals of the main supply line through sensing devices; the data acquisition unit and the protection unit are respectively connected with the controller. The novel breaker can actually form a power switching in turn off period, and the switching time can reach millisecond level and realize seamless switching; rapidity and transient characteristics are ideal, thereby truly satisfying rigid requirements of power supply reliability and power quality for a sensitive and key load.
Description
Technical field
The utility model relates to circuit breaker, relate in particular to a kind of in conventional circuit breaker the circuit breaker of electronic switch device in parallel.
Background technology
Circuit breaker is a kind of conventional protective device, can realize the functions such as short circuit, overload.Circuit breaker is used as general supply protection switch or branch line protection switch in power supply.When house circuit or household electrical appliance are short-circuited or transship, its can automatic trip, cuts off the electricity supply, thereby effectively protects these equipment to avoid damaging or Accident prevention expands.
Circuit breaker generally adopts mechanical structure.The contact system of this circuit breaker, touch spring use for a long time can be out of shape, oxidation, tension force disappear or go down, and causes that contact pressure is not enough, thereby circuit breaker is burnt.Contact is used for a long time can wearing and tearing.High temperature mainly due to electric arc makes metal steam raising, and contact thickness thins down, and this wearing and tearing are normal phenomenons, so contact is used, with the passing of time should change.Switch disjunction meeting produces electric arc, and under normal circumstances, electric arc enters in arc-control device and extinguishes rapidly, if but arc quenching system break down, the quenching time will extend, this will likely burn circuit breaker.
Utility model content
The utility model is for above problem, a kind of novel breaker is provided, can effectively solve the intrinsic problems such as the contact starting the arc, the touch spring of conventional mechanical switch be aging, greatly improve the useful life of switch speed and switch, meet responsive and the harsh requirement of critical load to power supply reliability and the quality of power supply.
The technical solution of the utility model is: comprise and be located at the end of incoming cables of main supply lines and the circuit breaker between user, also comprise protected location, data acquisition unit and controller;
Described protected location is in parallel with described circuit breaker, and described data acquisition unit connects described circuit breaker and by sensing device, gathers the signal of telecommunication of described main supply lines; Described data acquisition unit is connected respectively described controller with protected location;
Described protected location comprises full-controlled switch device isolation grid bipolar transistor one, two, uncontrollable semiconductor device diode one, two, buffer circuit one, two, and drive circuit one, two;
Described diode one and insulated gate bipolar transistor one reverse parallel connection, again and connect buffer circuit one; Described drive circuit one connects the G utmost point of described insulated gate bipolar transistor one, forms to take the electronic circuit one that the positive extreme direction of diode one is tie point one as interface A, negative pole direction;
Described diode two and insulated gate bipolar transistor two reverse parallel connections, again and connect buffer circuit two; Described drive circuit two connects the G utmost point of described insulated gate bipolar transistor two, anodal form take the electronic circuit two that diode two directions are tie point two as interface B, negative pole direction; Described tie point one is connected with tie point two;
Described drive circuit one and drive circuit two are connected respectively the control signal output of described controller.
In described circuit breaker, be provided with the travel switch for collecting work state.
The utility model utilizes insulated gate bipolar transistor to replace or transforms traditional machinery and switches circuit breaker, compare with the circuit breaker of existing employing mechanical protection unit with mechanical switch, the insulated gate bipolar transistor that protected location body of the present utility model adopts is all-controlling power electronics device, the break-make of device is all controlled, no matter whether the electric current by circuit breaker zero passage, it disconnects control that all can be real-time, and this can improve its switch speed greatly; And the starting the arc phenomenon causing while there will not be mechanical type circuit breaker (switch) break-make, suppresses the generation of circulation, has extended the useful life of switch, and contact system can not produce aging yet.Meet responsive and the harsh requirement of critical load to power supply reliability and the quality of power supply.Circuit breaker of the present utility model is actually when turn-offing, form a kind of " electrical source exchange ", the time of this switching reaches Millisecond, can realize seamless switching, rapidity and transient characterisitics are all very desirable, have conscientiously met responsive and the harsh requirement of critical loads to power supply reliability and the quality of power supply.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model,
Fig. 2 is the structure principle chart of protected location in the utility model;
In figure, 10 is interface A, the 11st, and insulated gate bipolar transistor one, 12nd, diode one, 13rd, tie point one,
The 20th, interface B, the 21st, insulated gate bipolar transistor two, 22nd, diode two, 23rd, tie point two;
In figure, solid line is main supply lines, and dotted line is connection.
Embodiment
The utility model as shown in Figure 1, comprises and is located at the end of incoming cables of main supply lines and the circuit breaker between user, also comprises protected location, data acquisition unit and controller;
Described protected location is in parallel with described circuit breaker, described data acquisition unit connects described circuit breaker and (receives the signal of working state of circuit breaker, in switch, be provided with travel switch, this case is for the circuit breaker with travel switch, such as CT19 only need be at its travel switch Shang Qu mono-road signal; For the circuit breaker without travel switch, need to set up one stroke switch) and by sensing device, gather the signal of telecommunication of described main supply lines; Described data acquisition unit is connected respectively described controller with protected location, forms communication and connects;
Described protected location as shown in Figure 2, comprises full-controlled switch device isolation grid bipolar transistor one 11,2 21, uncontrollable semiconductor device diode one 12,2 22, buffer circuit one, two, and drive circuit one, two;
Described diode 1 and insulated gate bipolar transistor one 11 reverse parallel connections, again and connect buffer circuit one; Described drive circuit one connects the G utmost point of described insulated gate bipolar transistor 1, forms to take the electronic circuit one that the positive extreme direction of diode 1 is tie point 1 as interface A10, negative pole direction;
Described diode 2 22 and insulated gate bipolar transistor 2 21 reverse parallel connections, again and connect buffer circuit two; Described drive circuit two connects the G utmost point of described insulated gate bipolar transistor 2 21, anodal form take the electronic circuit two that diode 2 22 directions are tie point 2 23 as interface B20, negative pole direction; Described tie point 1 is connected with tie point 2 23;
Described drive circuit one and drive circuit two are connected respectively the control signal output of described controller; When controller receives circuit breaker actuating signal, (open, close), working signal is provided can to immediately the drive circuit one and two of protected location.Interface A10, interface B20 limit without positive-negative polarity.Due to followingly in protected location transistorizedly opening, disconnected this area routine techniques that belongs to, therefore repeat no more.
In described circuit breaker, be provided with the travel switch for collecting work state.
The utility model, when concrete application, carries out as follows:
1), the spring operating mechanism travel switch of circuit breaker is while starting to move, data acquisition unit collects corresponding actuating signal;
2), Master Control Unit receives after signal, output is corresponding drives signal, protected location conducting;
3), when the transient state (moment of opening, closing) of main circuit voltage during by switch returns to normal, controller is according to the information of data acquisition module, protected location is closed, and by mechanical switch, is powered.
Further illustrate operation principle of the present utility model below:
Controller receiving data collecting unit collects actuating signal (several situations; the one, manual operation; the 2nd, line fault; circuit breaker auto-action), when controller is judged main circuit generation opening and closing, controller control port output control signal; trigger protection unit; can there is not starting the arc phenomenon in this process, electric current is transferred to protected location in the moment of opening and turn-off from circuit breaker, avoided the starting the arc phenomenon of circuit breaker when opening disconnection yet.
While again closing a floodgate, when main circuit is by transient recovery during to normality, then controller can be controlled protected location and disconnects, and this process starting the arc phenomenon can not occur yet.
Further illustrate operation principle of the present utility model below:
The utility model is when work, and in order to reduce switching tube on-state loss, power supply is to be customer power supply by circuit breaker.And when being initially customer power supply; to trigger circuit breaker and protected location simultaneously; the insulated gate bipolar transistor (IGBT) adopting due to protected location (protected location control be N line) is full-control type device; so the break-make of protected location is instant; make like this circuit breaker both end voltage be clamped to very low; so circuit breaker turn on process there will not be starting the arc phenomenon; device to be controlled recovers after normal power supply voltage levvl by voltage on signal acquisition module connection circuit; turn-off protection unit immediately, main supply lines, circuit breaker and user form path.Voltage, current value by real-time each road of detection of data acquisition module, be transferred to controller.This is the operation principle for closing a floodgate also.
As when there is artificial separating brake or causing automatic brake separating because of fault when instantaneous interruption (occur voltage dip or); Controller control port output control signal, trigger protection unit, makes its participation work, and can there is not starting the arc phenomenon in this process yet.Now, electric current is transferred to protected location from circuit breaker in fact, and when data acquisition signal collects the signal that main circuit breaker disconnects completely, controller can be controlled protected location and disconnect.
The utility model be take the make-and-break time of the full-control type semiconductor device that insulated gate bipolar transistor is representative and can be reached Microsecond grade, is easier to control, and in switching process, does not produce electric arc than half control type device.Therefore utilize the electronic power switch replacement based on full-control type semiconductor device or transform traditional mechanical diverter switch, the intrinsic problem of conventional mechanical switch will effectively be solved, greatly improve the useful life of switch speed and switch, meet the harsh requirement to power supply reliability and the quality of power supply.
Can be widely used in daily production field, especially be applicable to being applied to some explosion-proof occasions, such as thering is place, colliery of fuel gas etc.
Claims (2)
1. novel breaker, comprises and is located at the end of incoming cables of main supply lines and the circuit breaker between user, it is characterized in that, also comprises protected location, data acquisition unit and controller;
Described protected location is in parallel with described circuit breaker, and described data acquisition unit connects described circuit breaker and by sensing device, gathers the signal of telecommunication of described main supply lines; Described data acquisition unit is connected respectively described controller with protected location;
Described protected location comprises full-controlled switch device isolation grid bipolar transistor one, two, uncontrollable semiconductor device diode one, two, buffer circuit one, two, and drive circuit one, two;
Described diode one and insulated gate bipolar transistor one reverse parallel connection, again and connect buffer circuit one; Described drive circuit one connects the G utmost point of described insulated gate bipolar transistor one, forms to take the electronic circuit one that the positive extreme direction of diode one is tie point one as interface A, negative pole direction;
Described diode two and insulated gate bipolar transistor two reverse parallel connections, again and connect buffer circuit two; Described drive circuit two connects the G utmost point of described insulated gate bipolar transistor two, anodal form take the electronic circuit two that diode two directions are tie point two as interface B, negative pole direction; Described tie point one is connected with tie point two;
Described drive circuit one and drive circuit two are connected respectively the control signal output of described controller.
2. novel breaker according to claim 1, is characterized in that, is provided with the travel switch for collecting work state in described circuit breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320663818.2U CN203504136U (en) | 2013-10-25 | 2013-10-25 | Novel breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320663818.2U CN203504136U (en) | 2013-10-25 | 2013-10-25 | Novel breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203504136U true CN203504136U (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320663818.2U Expired - Fee Related CN203504136U (en) | 2013-10-25 | 2013-10-25 | Novel breaker |
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| Country | Link |
|---|---|
| CN (1) | CN203504136U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103532089A (en) * | 2013-10-25 | 2014-01-22 | 国家电网公司 | Novel circuit breaker |
-
2013
- 2013-10-25 CN CN201320663818.2U patent/CN203504136U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103532089A (en) * | 2013-10-25 | 2014-01-22 | 国家电网公司 | Novel circuit breaker |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20181025 |