CN203522315U - Quick double-power-supply switch device - Google Patents
Quick double-power-supply switch device Download PDFInfo
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- CN203522315U CN203522315U CN201320661986.8U CN201320661986U CN203522315U CN 203522315 U CN203522315 U CN 203522315U CN 201320661986 U CN201320661986 U CN 201320661986U CN 203522315 U CN203522315 U CN 203522315U
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- power supply
- switch element
- power
- switch
- circuit breaker
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- 239000004065 semiconductor Substances 0.000 claims abstract description 7
- 230000003993 interaction Effects 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 5
- 238000002955 isolation Methods 0.000 claims description 3
- 230000001052 transient effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
Abstract
The utility model provides a quick double-power-supply switch device. The utility model relates to a switch which is used for ensuring power supply continuity. The quick double-power-supply switch device can effectively settle the problems of contact arc starting, electric energy loss, etc. in a traditional switch. The quick double-power-supply switch device comprises a common power supply, a standby power supply, a load, a first circuit breaker and a second circuit breaker. The quick double-power-supply switch device further comprises a first switch unit, a second switch unit, a data acquiring module and a master control module. The first switch unit or the second switch unit comprises the following components: a first total-control type switching device insulated gate bipolar transistor, a second total-control switching device insulated gate bipolar transistor, a first uncontrollable semiconductor device diode, a second uncontrollable semiconductor device diode, a first buffer circuit, a second buffer circuit, a first driving circuit and a second driving circuit. The quick double-power-supply switch device reduces severe effect to load caused by problems of temporary voltage reduction of power supply, short-time voltage interruption, etc., and ensures safe and stable operation of the power supply system. Power switching time of the quick double-power-supply switch device is within several milliseconds, and no-stoppage switching can be realized. Ideal speed and ideal transient characteristic are realized. The quick double-power-supply switch device truly satisfies harsh requirements of the sensible and key loads to power supply reliability and electric energy quality.
Description
Technical field
The utility model relates to a kind of for guaranteeing the quick double power supply converting switch of power supply continuity.
Background technology
In current power supply system, supply network is sometimes due to reasons such as the switching of large-scale impact or nonlinear load, thunderbolt, load faulties, cause supply power voltage to occur falling temporarily or the problem such as short term outage, this can cause similar computer server and data processor some do not allow the equipment of power-off to occur that power supply stops, thereby bring serious consequence to the systems such as a large amount of consecutive production industries, financial center, data center, hospital, communications and transportation, cause even casualties of immeasurable economic loss.Given this, power supply is had to the industry of specific (special) requirements, often dispose stand-by power supply power supply.
Having the occasion of stand-by power supply, for realizing uninterrupted power supply, conventional method is with mechanical switch or the solid-state switch based on half control type device, and load is switched to trouble-free bus from faulted line segment.It is not very good that the intrinsic characteristic of this electric mechanical switch itself makes switch speed and transient characterisitics, can not accomplish the switching of " seamless ", in addition, mechanical switch is when being switched on or switched off, can there are contact vibrations, starting the arc phenomenon and cause that contact deteriorates, electromagnetic interference and energy loss, this has not only limited its scope of application, and makes its electrical endurance lower than mechanical endurance, and that solid-state switch based on half control type device turn-offs is uncontrollable, therefore extend switching time.
The make-and-break time of the full-control type semiconductor device that the insulated gate bipolar transistor of take is representative can reach 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 responsive and the harsh requirement of critical load to power supply reliability and the quality of power supply.
Utility model content
The utility model provides a kind of quick double power supply converting switch device, can effectively solve intrinsic problem and the uncontrollable problem of half control type switch such as the contact starting the arc, energy loss of conventional mechanical switch, 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 conventional power supply, stand-by power supply, load, circuit breaker one and circuit breaker two; Described circuit breaker one is located between described conventional power supply and load, and described circuit breaker two is located between described stand-by power supply and load;
Also comprise switch element one, switch element two, data acquisition module and total control module;
Described switch element one is connected in parallel with described circuit breaker one;
Described switch element two is connected in parallel with described circuit breaker two;
Described conventional power supply, stand-by power supply, load are connected with the input of data acquisition module respectively, and data acquisition module also has communication with total control module and is connected;
The control signal output of top control module is connected with switch element two with described switch element one.
The structure of described switch element one or switch element two is:
Comprise 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 top control module.
Also comprise human-computer interaction module, described human-computer interaction module communicates by serial ports and total control module, shows in real time the effective value on each road, by human-computer interaction module, switch element one or switch element two is carried out the control of parameter setting and start and stop.
The utility model utilizes insulated gate bipolar transistor to replace or transforms traditional mechanical diverter switch or half control type switching device, as many power change-over switchs of switch element body, compare with existing employing half control type device with mechanical switch, the insulated gate bipolar transistor that switch element 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 switch 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 switch break-make, suppress the generation of circulation, extended the useful life of switch, add accurate control system, can make to be controlled at switching time between duplicate supply Millisecond, " seamless " that almost can realize between duplicate supply switches, meet responsive and the harsh requirement of critical load to power supply reliability and the quality of power supply, what the problems such as power supply voltage dip, short time voltage interruption that greatly reduce caused load has a strong impact on, and guarantees electric power system safe and stable operation.The electrical source exchange time of the present utility model reaches Millisecond, can realize seamless switching, and rapidity and transient characterisitics are all very desirable, has 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 switch element 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.
Embodiment
The utility model is as shown in Figure 1, 2: comprise conventional power supply LA, stand-by power supply LB, load L, circuit breaker one PS1 and circuit breaker two PS2; Described circuit breaker one PS1 is located between described conventional power supply LA and load L, and described circuit breaker two PA2 are located between described stand-by power supply LB and load L;
Also comprise switch element one, switch element two, data acquisition module and total control module;
Described switch element one is connected in parallel with described circuit breaker one PS1;
Described switch element two is connected in parallel with described circuit breaker two PS2;
Described conventional power supply LA, stand-by power supply LB, load respectively L are connected with the input of data acquisition module, and data acquisition module also has communication with total control module and is connected;
The control signal output of top control module is extremely connected with the control of switch element two with described switch element one.The control signal of top control module output is sent to drive circuit, and drive circuit produces the corresponding signal that drives and comes control switch unit.Due to followingly in switch element transistorizedly opening, disconnected this area routine techniques that belongs to, therefore repeat no more.
The structure of described switch element one or switch element two is:
Comprise 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 top control module.Receive like this after the coherent signal of top control module, can make open and close action.Here need to explain: " module " this term of using in the utility model is to refer to corresponding circuit.
Also comprise human-computer interaction module, described human-computer interaction module communicates by serial ports and total control module, shows in real time the effective value on each road, by human-computer interaction module, switch element one or switch element two is carried out the control of parameter setting and start and stop.The electric current and voltage that can show conventional and stand-by power supply; Can also complete model selection: manual mode or automatic mode.
Method of work of the present utility model, carry out according to the following steps:
1), described conventional power supply LA, stand-by power supply LB be when all normally work, described circuit breaker one PS1 is closed, circuit breaker two PS2 disconnect; Switch element one and switch element two all keep stand-by state, and circuit breaker one PS1 maintains normal work, continue to keep the power supply of conventional power supply LA to load L;
2), when there is voltage dip or instantaneous interruption in conventional mains side LA, top control module, according to the information of data acquisition module, sends following work order to switch element one and circuit breaker one PS1:
2.1), trigger starting switch unit one, turn-off circuit breaker one PS1;
2.2), when top control module judgement circuit breaker one PS1 disconnects, the electric current of conventional power supply LA side is zero or is less than its threshold value simultaneously, the residual voltage on the L of proof load simultaneously bus also reduces to zero,
Or the electrical potential difference between stand-by power supply LB and load L bus is zero,
Trigger switch unit two immediately, by stand-by power supply LB, to load L, powered, and after power supply is stable, trigger circuit breaker two PS2;
2.3), because the impedance of mechanical switch is low, so electric current can be transferred to mechanical switch side again, stopcock unit two after the change of current completes, stand-by power supply LB powers to load L by circuit breaker two PS2.
When detect conventional power up normal after a period of time, total control module can be exported corresponding control signal, turn-offs stand-by power supply side switch element two, after electric current is down to zero, triggers the switch element one of conventional mains side, continuation is powered to the load by conventional power supply.Concrete grammar, with aforementioned contrary, repeats no more herein.
Further illustrate operation principle of the present utility model below:
The utility model is when work, and when dual power supply system is normal, in order to reduce switching tube on-state loss, conventional power supply LA is load L power supply by circuit breaker one PS1.And when being initially load supplying, to trigger circuit breaker one PS1 and the switch element one of conventional mains side simultaneously, the insulated gate bipolar transistor (IGBT) adopting due to switch element (switch element control be N line) is full-control type device, so the break-make of switch element is instant, make like this circuit breaker one PS1 both end voltage be clamped to very low, so circuit breaker one PS1 turn on process there will not be starting the arc phenomenon, after the feedback signal that receives circuit breaker one PS1 until master control borad, stopcock unit one immediately, first power supply (conventional power supply LA), circuit breaker one and load form path.Voltage, current value by real-time each road of detection of data acquisition module, be transferred to total control module, and top control module sends detected value by serial communication and shows to human-computer interaction module;
When top control module is judged conventional power supply LA side generation voltage dip or instantaneous interruption, top control module control port output control signal, trigger switch unit one, turn-off circuit breaker one PS1, can there is not starting the arc phenomenon in this process yet, electric current is transferred to switch element one from circuit breaker one PS1, and then top control module can disconnect control switch unit one.Feedback signal disconnection as top control module judgement circuit breaker one PS1, the electric current of main power source LA side is zero or is less than its threshold value simultaneously, the electrical potential difference that residual voltage on the L of proof load simultaneously bus is also reduced between zero or stand-by power supply LB and load L bus is zero, trigger switch unit two immediately, by stand-by power supply, LB powers to the load, after power supply is stable, trigger circuit breaker two PS2, because the impedance of mechanical switch is low, so electric current can be transferred to mechanical switch side again, stopcock unit two after the change of current completes, stand-by power supply LB powers to the load by circuit breaker two PS2, can there is not starting the arc phenomenon in this process yet, " seamless " realized thus between duplicate supply switches, and meets the harsh requirement of sensitive loads to the quality of power supply.
When duplicate supply all breaks down or when load-side occurs overcurrent, short circuit or circulation, total control module will turn-off switch element and the circuit breaker of duplicate supply side immediately, stops as load supplying.
The utility model, when judging power supply and occur voltage dip or outage, can be exported corresponding triggering signal, to control conventional and the switch element of stand-by power supply both sides and the break-make of circuit breaker, reaches the object of (Millisecond) Switching power fast.When conventional side breaks down, utilize switch element one to turn-off " transition "; Synchronously enabling stand-by power supply side is, utilizes the switch element two of this side to connect " transition ", when reaching quick switching object, has avoided circuit breaker one, the hard shutoff of circuit breaker two, the drawbacks such as the starting the arc that connect and then cause.
Claims (3)
1. quick double power supply converting switch device, comprises conventional power supply, stand-by power supply, load, circuit breaker one and circuit breaker two; Described circuit breaker one is located between described conventional power supply and load, and described circuit breaker two is located between described stand-by power supply and load;
It is characterized in that, also comprise switch element one, switch element two, data acquisition module and total control module;
Described switch element one is connected in parallel with described circuit breaker one;
Described switch element two is connected in parallel with described circuit breaker two;
Described conventional power supply, stand-by power supply, load are connected with the input of data acquisition module respectively, and data acquisition module also has communication with total control module and is connected;
The control signal output of top control module is connected with switch element two with described switch element one.
2. quick double power supply converting switch device according to claim 1, is characterized in that, the structure of described switch element one or switch element two is:
Comprise 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 top control module.
3. quick double power supply converting switch device according to claim 1 and 2, it is characterized in that, also comprise human-computer interaction module, described human-computer interaction module communicates by serial ports and total control module, show in real time the effective value on each road, by human-computer interaction module, switch element one or switch element two are carried out the control of parameter setting and start and stop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320661986.8U CN203522315U (en) | 2013-10-25 | 2013-10-25 | Quick double-power-supply switch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320661986.8U CN203522315U (en) | 2013-10-25 | 2013-10-25 | Quick double-power-supply switch device |
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| Publication Number | Publication Date |
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| CN203522315U true CN203522315U (en) | 2014-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320661986.8U Expired - Fee Related CN203522315U (en) | 2013-10-25 | 2013-10-25 | Quick double-power-supply switch device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103532218A (en) * | 2013-10-25 | 2014-01-22 | 国家电网公司 | Rapid double power supply switch device and working method thereof |
-
2013
- 2013-10-25 CN CN201320661986.8U patent/CN203522315U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103532218A (en) * | 2013-10-25 | 2014-01-22 | 国家电网公司 | Rapid double power supply switch device and working method thereof |
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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: 20140402 Termination date: 20191025 |
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| CF01 | Termination of patent right due to non-payment of annual fee |