CN107947350A - The control power supply system of selection of automatic change-over and automatic change-over - Google Patents
The control power supply system of selection of automatic change-over and automatic change-over Download PDFInfo
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- CN107947350A CN107947350A CN201711416305.0A CN201711416305A CN107947350A CN 107947350 A CN107947350 A CN 107947350A CN 201711416305 A CN201711416305 A CN 201711416305A CN 107947350 A CN107947350 A CN 107947350A
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- power supply
- control power
- common
- switch
- driving mechanism
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
-
- 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
-
- 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 invention discloses a kind of control power supply system of selection of automatic change-over.The method of the present invention is when being controlled power supply selection, take into full account that normal, prepped side performs the on off state of switch and the working status of driving mechanism, band to avoid control power selection switch carries switching, and establish the selection logic of control power supply with reference to normal, prepped side execution switch opening and closing state, to avoid the unnecessary action that power selection switch is controlled caused by voltage fluctuation, effectively extend its service life.The invention also discloses a kind of automatic change-over.Compared with prior art, the present invention can effectively avoid the band of control power selection switch from carrying switching, and the selection logic of control power supply is established with reference to the opening and closing state for performing switch, the unnecessary action of control power selection switch caused by voltage fluctuation can be avoided, effectively extends its service life.
Description
Technical field
The present invention relates to the control power supply selecting party of a kind of automatic change-over, more particularly to a kind of automatic change-over
Method.
Background technology
The control power supply of automatic change-over (refers to and is used to drive common side to perform switch and prepped side in automatic change-over
Switch motion is performed to realize the control power supply of the driving mechanism of power supply automatic conversion) generally directly use from main circuit power,
I.e. common power supply or stand-by power supply.At a time, when wherein power supply cannot meet that the control of driving mechanism requires all the way,
Automatic change-over control unit using select another way disclosure satisfy that driving mechanisms control requirement power supply as control power supply, such as
Fruit two-way power supply cannot meet the control requirement of driving mechanism, then control power supply to keep original selection constant.Therefore, for reality
Existing above-mentioned function, the control unit of automatic change-over need the voltage status of detection two-way power supply in real time, and according to voltage shape
To reasonably select, wherein power supply is used as control power supply to state all the way.Logic shown in Fig. 1 is generally to be used on current automatic change-over
A kind of control power supply system of selection, this system of selection is simple and practical, but there are following 2 drawbacks：
(1) control power supply selective relay to have band during the work time and carry switching phenomenon.Such as when common electricity
Source occurs abnormal, and when stand-by power supply is normal, control power supply can be switched to stand-by power supply by control unit, then control driving machine
Structure realizes switching motion, is switched to stand-by power supply and load is powered, the mistake of stand-by power supply is being switched in driving mechanism
Cheng Zhong, since driving mechanism is in working status, exists in control power selection switch (being usually relay) performance loop
Larger electric current, if commonly using power up at this time, then control power selection switch will be acted so that controlling power supply to switch
Common power supply is returned, band can be produced at this time and carry switching, equivalent to the contact by control power selection switch in the state of belt current
Action completes the switching of control power supply, may cause arcing, the ablation of the contact for controlling power selection switch with switching is carried,
The service life of contact is substantially reduced, or even causes the damage of control power selection switch.
(2) action of automatic change-over upper drive mechanism, which generally requires, meets certain voltage conditions and transfer delay
Condition, but control power supply system of selection shown in Fig. 1 depends only on voltage conditions, will like this cause much need not
At the time of wanting (at the time of driving mechanism action is not required), control power selection switch still can be realized only according to voltage status
Action, such as within the time range of transfer delay, original selection controls situation of the supply voltage if there is frequent fluctuation,
It is able to will likely cause to control power selection switch to produce frequently action, reduce control power selection switch contact uses the longevity
Life.
The content of the invention
The technical problems to be solved by the invention are to overcome the shortage of prior art, there is provided a kind of control of automatic change-over
Power supply system of selection processed, can effectively avoid the band of control power selection switch from carrying switching, extend its service life.
It is of the invention that above-mentioned technical problem is specifically solved using following technical scheme：
A kind of control power supply system of selection of automatic change-over, the automatic change-over include respectively connection load with
Common power supply, the common side of stand-by power supply performs switch, prepped side performs switch, for drive common side execution switch with it is spare
Side performs switch motion to realize the driving mechanism of power supply automatic conversion, and control unit；Control unit is by the following method
A control power supply as the driving mechanism is selected from common power supply and stand-by power supply：
The voltage of the common power supply of control unit detection in real time and stand-by power supply, and judge whether two-way supply voltage is full respectively
Sufficient driving mechanisms control requirement, while the opening and closing state that switch and prepped side execution switch are performed to commonly using side is examined in real time
Survey, and detect whether the demand of power supply automatic conversion in real time；
When control unit detects the demand of power supply automatic conversion, selected first from common power supply and stand-by power supply
Go out current target control power supply, and whether unanimously sentenced according to current target control power supply and current actual control power supply
Whether have control power supply switching demand, as without power supply switching demand is controlled, then kept current control power supply constant if breaking；If any
Power supply switching demand is controlled, then determines whether driving mechanism is currently in running order：As driving mechanism is not located currently
In working status, then current control power supply is directly switched to the target control power supply；As driving mechanism is currently at work
Make state, then send and cease and desist order to driving mechanism, current control power supply is then switched to the target control power supply again；
Wherein, the selection principle of current target control power supply is specific as follows：When common supply voltage meets driving mechanism
Control and require and when to perform switch be gate-dividing state for common side, selection commonly uses power supply as target control power supply；Otherwise, when standby
With when supply voltage meets driving mechanisms control requirement and prepped side execution switch is gate-dividing state, stand-by power supply conduct is selected
Target control power supply；In the case of remaining, target control power supply is used as using currently practical control power supply.
Preferably, control unit judges whether this two-way supply voltage of common power supply and stand-by power supply is full by the following method
Sufficient driving mechanisms control requirement：If supply voltage is in the range of the permitted normal working voltage of the driving mechanism, then meet
Driving mechanisms control requirement, otherwise, is unsatisfactory for.
In order to reduce the unnecessary action of control power selection switch, so as to further extend its service life, preferably
Ground, when one of the following conditions are met, and reaches the predetermined transfer delay time, is determined as there are the need of power supply automatic conversion
Ask：
Condition 1：Common supply voltage is normal, and backup power source voltage is normal, commonly uses side and performs switch separating brake, prepped side performs
Switch separating brake；
Condition 2：Common supply voltage is normal, and backup power source voltage is abnormal, commonly uses side and performs switch separating brake, prepped side performs
Switch separating brake；
Condition 3：Common supply voltage is abnormal, and backup power source voltage is normal, commonly uses side and performs switch separating brake, prepped side performs
Switch separating brake；
Condition 4：Common supply voltage is abnormal, and backup power source voltage is normal, commonly uses side execution switch and closes a floodgate, prepped side performs
Switch separating brake；
Condition 5：Common supply voltage is normal, and backup power source voltage is normal, commonly uses side and performs switch separating brake, prepped side performs
Switch closes a floodgate；
Condition 6：Common supply voltage is normal, and backup power source voltage is abnormal, commonly uses side and performs switch separating brake, prepped side performs
Switch closes a floodgate.
Preferably, as driving mechanism is currently at working status, then sends and cease and desist order to driving mechanism immediately.
Preferably, as driving mechanism is currently at working status, first driving mechanism current action is waited to complete, then to drive
Motivation structure, which is sent, ceases and desist order.
Preferably, control unit realizes that the control power supply of driving mechanism switches by relay.
Following technical scheme can also be obtained according to identical invention thinking：
A kind of automatic change-over, the automatic change-over include connection load respectively and common power supply, stand-by power supply
Common side perform switch, prepped side performs switch, for drive common side to perform switch and prepped side perform switch motion with
Realize the driving mechanism of power supply automatic conversion, and control unit；The automatic change-over uses as above any technical solution institute
State control power supply system of selection.
Compared with prior art, technical solution of the present invention has the advantages that：
The present invention can effectively avoid the band of control power selection switch from carrying switching, and combine the divide-shut brake for performing switch
State controls the selection logic of power supply to establish, and can avoid the unnecessary of control power selection switch caused by voltage fluctuation
Action, effectively extends its service life.
Brief description of the drawings
Fig. 1 is that the control power supply of existing automatic change-over selects logic；
Fig. 2 is a kind of control power selection circuit figure of automatic change-over；
Fig. 3 is that the control power supply of automatic change-over of the present invention selects logic；
Fig. 4 is the selection logic of current target control power supply.
Embodiment
For insufficient present in the prior art, thinking of the invention be when being controlled power supply selection, take into full account often,
Prepped side performs the on off state of switch and the working status of driving mechanism, is cut to avoid the band load of control power selection switch
Change, and combine normal, prepped side execution switch opening and closing state to establish the selection logic of control power supply, to avoid voltage wave
The unnecessary action of control power selection switch, effectively extends its service life caused by dynamic.Specifically, the present invention is adopted
It is as follows with technical solution：
A kind of control power supply system of selection of automatic change-over, the automatic change-over include respectively connection load with
Common power supply, the common side of stand-by power supply performs switch, prepped side performs switch, for drive common side execution switch with it is spare
Side performs switch motion to realize the driving mechanism of power supply automatic conversion, and control unit；Control unit is by the following method
A control power supply as the driving mechanism is selected from common power supply and stand-by power supply：
The voltage of the common power supply of control unit detection in real time and stand-by power supply, and judge whether two-way supply voltage is full respectively
Sufficient driving mechanisms control requirement, while the opening and closing state that switch and prepped side execution switch are performed to commonly using side is examined in real time
Survey, and detect whether the demand of power supply automatic conversion in real time；
When control unit detects the demand of power supply automatic conversion, selected first from common power supply and stand-by power supply
Go out current target control power supply, and whether unanimously sentenced according to current target control power supply and current actual control power supply
Whether have control power supply switching demand, as without power supply switching demand is controlled, then kept current control power supply constant if breaking；If any
Power supply switching demand is controlled, then determines whether driving mechanism is currently in running order：As driving mechanism is not located currently
In working status, then current control power supply is directly switched to the target control power supply；As driving mechanism is currently at work
Make state, then send and cease and desist order to driving mechanism, current control power supply is then switched to the target control power supply again；
Wherein, the selection principle of current target control power supply is specific as follows：When common supply voltage meets driving mechanism
Control and require and when to perform switch be gate-dividing state for common side, selection commonly uses power supply as target control power supply；Otherwise, when standby
With when supply voltage meets driving mechanisms control requirement and prepped side execution switch is gate-dividing state, stand-by power supply conduct is selected
Target control power supply；In the case of remaining, target control power supply is used as using currently practical control power supply.
For the ease of public understanding, below with a specific embodiment and with reference to attached drawing come to technical scheme into
Row describes in detail：
Fig. 2 shows a kind of control power selection circuit figure of automatic change-over, wherein common power supply, stand-by power supply warp
Power module is converted into addition supplying for power supply selective relay all the way for control unit detection sampling after suitable supply voltage
Electricity, wherein 1A-1N are derived from common power supply, and 2A-2N is derived from stand-by power supply, 1KA1 power supply selective relays in order to control, Q1 1KA1
The control signal of relay, for the selection of drive control power supply.
Fig. 3 shows the control power supply selection logic of above-mentioned automatic change-over, and Fig. 4 shows wherein current target control
The selection logic of power supply processed.Its specific implementation step is as follows：
1st, the voltage status of the common power supply of the control unit of automatic change-over detection in real time and stand-by power supply, and according to
The scope (scope of driving mechanism normal working voltage) of voltage is controlled, judges whether two-way supply voltage meets driving machine respectively
The control requirement of structure.When the voltage of power supply is within the operating voltage range of automatic change-over driving mechanism permission, sentence
It is set to supply voltage and meets that control requires, is otherwise determined as that supply voltage is unsatisfactory for control and requires.
2nd, the common side of control unit detection in real time performs switch and prepped side performs the opening and closing state of switch.
3rd, the voltage of the common power supply of control unit detection in real time and stand-by power supply, and according to the electric voltage exception point threshold of setting
Value judges the state of voltage (normal or abnormal), opening and closing state and the delay of predetermined switching motion then in conjunction with switch
Time, has determined that non-transformer automatic conversion acts demand.When the action demand of non-transformer automatic conversion, control power supply keeps former
Have selection it is constant；When there is the action demand of automatic conversion, then step 4 is performed.
4th, according to currently practical control power supply, obtained by the selection logic of the target control power supply with reference to shown according to Fig. 4
The selection result gone out, judge it is current whether have a control power supply switching demand, i.e. the control power supply of current time reality and according to control
When the target control power supply that power supply selection logic processed is drawn is inconsistent, it is determined as there is control power supply switching demand, is otherwise determined as
Without control power supply switching demand.
The selection logic of current target control power supply is specifically when common supply voltage satisfaction control requires and common side
When execution on off state is separating brake, common power supply is selected as target control power supply；Otherwise, when backup power source voltage meets to control
It is required that and prepped side perform on off state when be separating brake, selection stand-by power supply is as target control power supply；In the case of remaining, choosing
Current actual control power supply is selected as target control power supply, that is, controls power supply to keep original selection constant.
If currently without control power supply switching demand, control power supply selection remains unchanged；If currently there is control power supply
Switching demand, then perform step 5.
5th, first determine whether when whether front driving mechanism is in working status, if being not in working status, according to institute
The target control power supply of selection, directly carries out the switching of current control power supply；If being in working status, first send immediately
Driving mechanism is ceased and desisted order, and then according still further to selected target control power supply, the switching of current control power supply is carried out, to ensure
The action of power supply selective relay is controlled to switch for no-load.Or first wait driving mechanism current action to complete, then to driving
Mechanism, which is sent, ceases and desist order, if controlling power supply switching demand to still suffer from this time, according still further to selected target control power supply, into
The switching of power supply is controlled before the trade, it is ensured that control the action of power supply selective relay to switch for no-load.
Table 1 below shows that automatic conversion of the automatic change-over under the conditions of various under hauling oneself willingly into from complex pattern acts demand
And corresponding target control power supply selection result：
Table 1
In order to further illustrate technical solution of the present invention, with reference to automatic change-over transfer process, to controlling power supply
Selection be illustrated.
Original state：Common power supply and backup power source voltage are normal, commonly use side and perform switch combined floodgate, control power supply selection
Common power supply, driving mechanism are in off working state (inactive state).
When common power supply is abnormal (such as under-voltage), within predetermined transfer delay time range, control power supply choosing
Selecting relay keeps original state constant, and when reaching the transfer delay time, drive control power supply selective relay acts first,
Stand-by power supply is selected then to send drive command again as control power supply, driving mechanism is devoted oneself to work, change to prepped side and hold
Row switch closes a floodgate, and after converting, cancels driving mechanism action command, driving mechanism is stopped.
If during stand-by power supply is transformed into from common power supply, power up is commonly used, when reaching transfer delay
Between when, it will select common power supply again as control power supply, but at this time may driving mechanism be in working status, control
There is larger electric current, the present invention carries switching in order to avoid the band of relay, this in power cut-over relay performance loop
In the case of, the working status when front driving mechanism can be judged first, if current time is in working status, first stood
Send driving mechanism to cease and desist order, then drive control power supply selective relay, the common power supply of selection are used as control power supply again.
Or first wait driving mechanism current action to complete, then send and cease and desist order to driving mechanism, if controlling power supply switching at this time
Demand still suffers from, then drive control power supply selective relay, the common power supply of selection are used as control power supply again.
If be transformed into after stand-by power supply, power up is commonly used, it will select common power supply to be used as control power supply again,
Driving mechanism is in halted state at this time, and when reaching the transfer delay time, control unit will directly drive control power supply choosing
Relay is selected, selects common power supply as control power supply.
Claims (7)
1. a kind of control power supply system of selection of automatic change-over, the automatic change-over is including connection load respectively and often
With the common side of power supply, stand-by power supply performs switch, prepped side performs switch, for driving common side to perform switch and prepped side
Switch motion is performed to realize the driving mechanism of power supply automatic conversion, and control unit；It is characterized in that, control unit passes through
Following methods select a control power supply as the driving mechanism from common power supply and stand-by power supply：
The voltage of the common power supply of control unit detection in real time and stand-by power supply, and judge whether two-way supply voltage meets to drive respectively
Dynamic mechanism controls requirement, while the opening and closing state that switch is performed to common side execution switch and prepped side is detected in real time,
And the demand of power supply automatic conversion is detected whether in real time；
When control unit detects the demand of power supply automatic conversion, select work as from common power supply and stand-by power supply first
Preceding target control power supply, and whether unanimously judge to be according to current target control power supply and current actual control power supply
It is no to have control power supply switching demand, as without power supply switching demand is controlled, then kept current control power supply constant；If any control
Power supply switches demand, then determines whether driving mechanism is currently in running order：As driving mechanism is not presently within work
Make state, then current control power supply is directly switched to the target control power supply；As driving mechanism is currently at work shape
State, then send to driving mechanism and cease and desist order, and current control power supply then is switched to the target control power supply again；
Wherein, the selection principle of current target control power supply is specific as follows：When common supply voltage meets driving mechanisms control
It is required that and when to perform switch be gate-dividing state for common side, selection commonly uses power supply as target control power supply；Otherwise, standby electricity is worked as
When source voltage meets that driving mechanisms control requires and prepped side execution switch is gate-dividing state, stand-by power supply is selected as target
Control power supply；In the case of remaining, target control power supply is used as using currently practical control power supply.
2. method as claimed in claim 1, it is characterised in that control unit judges common power supply and standby electricity by the following method
Whether this two-way supply voltage of source meets driving mechanisms control requirement：As supply voltage is permitted normal in the driving mechanism
In operating voltage range, then meet driving mechanisms control requirement, otherwise, be unsatisfactory for.
3. method as claimed in claim 1, it is characterised in that when one of the following conditions are met, and reach predetermined and turn
Delay time is changed, is determined as there is the demand of power supply automatic conversion：
Condition 1：Common supply voltage is normal, and backup power source voltage is normal, commonly uses side and performs switch separating brake, prepped side performs switch
Separating brake；
Condition 2：Common supply voltage is normal, and backup power source voltage is abnormal, commonly uses side and performs switch separating brake, prepped side performs switch
Separating brake；
Condition 3：Common supply voltage is abnormal, and backup power source voltage is normal, commonly uses side and performs switch separating brake, prepped side performs switch
Separating brake；
Condition 4：Common supply voltage is abnormal, and backup power source voltage is normal, commonly uses side execution switch and closes a floodgate, prepped side performs switch
Separating brake；
Condition 5：Common supply voltage is normal, and backup power source voltage is normal, commonly uses side and performs switch separating brake, prepped side performs switch
Close a floodgate；
Condition 6：Common supply voltage is normal, and backup power source voltage is abnormal, commonly uses side and performs switch separating brake, prepped side performs switch
Close a floodgate.
4. method as claimed in claim 1, it is characterised in that as driving mechanism is currently at working status, then immediately to driving
Mechanism, which is sent, ceases and desist order.
5. method as claimed in claim 1, it is characterised in that as driving mechanism is currently at working status, first wait driving machine
Structure current action is completed, and is then sent and is ceased and desisted order to driving mechanism.
6. method as claimed in claim 1, it is characterised in that control unit realizes the control power supply of driving mechanism by relay
Switching.
7. a kind of automatic change-over, the automatic change-over includes connection load respectively and common power supply, stand-by power supply
Common side performs switch, prepped side performs switch, and for driving, common side performs switch and prepped side performs switch motion with reality
The driving mechanism of existing power supply automatic conversion, and control unit；It is characterized in that, the automatic change-over uses such as claim
Any one of 1~6 control power supply system of selection.
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| CN106130165A (en) * | 2016-07-01 | 2016-11-16 | 无锡韩光电器股份有限公司 | The control circuit of automatic transfer switching electric appliance |
| CN106410951A (en) * | 2016-10-12 | 2017-02-15 | 常熟开关制造有限公司(原常熟开关厂） | Conversion control method of double power supply automatic conversion device |
| CN106787126A (en) * | 2015-11-20 | 2017-05-31 | Asco电力技术公司 | Electric unit and its control method are selected for automatic change-over |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110260538A1 (en) * | 2010-04-13 | 2011-10-27 | Huang Jli-Kun | High reliability dual power sources automatic switch circuit and isolation apparatus of the same |
| CN102957198A (en) * | 2011-08-19 | 2013-03-06 | 国家电网公司 | Method, device and system capable of achieving automatic double-power-supply switching for eliminating continuous flashing |
| CN102497004A (en) * | 2011-11-25 | 2012-06-13 | 常熟开关制造有限公司(原常熟开关厂） | Automatic change-over switch control method |
| CN105024450A (en) * | 2015-08-10 | 2015-11-04 | 常熟开关制造有限公司(原常熟开关厂） | Dual-power-source automatic conversion device and conversion control method thereof and dual-power-source power supply system |
| CN106787126A (en) * | 2015-11-20 | 2017-05-31 | Asco电力技术公司 | Electric unit and its control method are selected for automatic change-over |
| CN106130165A (en) * | 2016-07-01 | 2016-11-16 | 无锡韩光电器股份有限公司 | The control circuit of automatic transfer switching electric appliance |
| CN106410951A (en) * | 2016-10-12 | 2017-02-15 | 常熟开关制造有限公司(原常熟开关厂） | Conversion control method of double power supply automatic conversion device |
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|---|---|
| CN107947350B (en) | 2019-07-23 |
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