CN110323831A - More power supply automatic switching control systems based on load actual capacity switching step by step - Google Patents
More power supply automatic switching control systems based on load actual capacity switching step by step Download PDFInfo
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- CN110323831A CN110323831A CN201810273364.5A CN201810273364A CN110323831A CN 110323831 A CN110323831 A CN 110323831A CN 201810273364 A CN201810273364 A CN 201810273364A CN 110323831 A CN110323831 A CN 110323831A
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- 238000000034 method Methods 0.000 claims abstract description 15
- 238000005070 sampling Methods 0.000 claims description 27
- 238000001514 detection method Methods 0.000 claims description 25
- 230000005611 electricity Effects 0.000 claims description 9
- 230000001351 cycling effect Effects 0.000 claims description 8
- 230000003252 repetitive effect Effects 0.000 claims description 7
- 238000012552 review Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 5
- 230000003993 interaction Effects 0.000 claims description 4
- 230000002452 interceptive effect Effects 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 9
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
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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
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
- H02J3/0073—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load and source when the main path fails, e.g. transformers, busbars
-
- 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
- H02J9/08—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 requiring starting of a prime-mover
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
More power supply automatic switching control systems based on load actual capacity switching step by step, more than one power supply automatic control system, common power supply in power supply system is into spare/emergency power supply handoff procedure, after more generator parallels for ensuring the spare/emergency power supply, still meet client according to each load unit of load important sequence step -by -step switch and improve power supply reliability, and it can be integrated to adapt to more load units.
Description
Technical field
The present invention relates to power supplys more in power supply system automatically switch field, further to one based on load actual capacity by
Grade switching more power supply automatic switching control systems, further, be related to a common power supply in power supply system to it is spare/
In emergency power supply handoff procedure, it is ensured that after more generator parallels of the spare/emergency power supply, still meet client according to load
Each load unit of sequence of importance step -by -step switch and the more power supply automatic switching control systems for improving power supply reliability.
Background technique
In power supply system such as 0.4KV, 6KV, 10KV or 20KV power grid, in order to solve the emergency situations such as power-off suddenly, people
Need load from common power supply or power grid being switched to backup power source or emergency power supply, to provide power output in time, guarantee
Needed for load.And backup power source or emergency power supply are usually to be made of more generator such as diesel generating set parallel connection, to improve
The maximum power supply capacity of backup power source or emergency power supply provides reliably stable power output for more loads.
Naturally, the maximum power supply capacity of the backup power source as made of quantity different generator parallel is also different, when this
Generating set is accessed multiple load units, should when so that the current load capacity of generating set is beyond its maximum power supply capacity
Generating set just not can guarantee normal power supply, and then can not work normally each load unit.Thus it is guaranteed that after more power supply switchings
Backup power source or emergency power supply power supply capacity abundance are necessary.
In daily life, the maximum power supply capacity of backup power source or emergency power supply is usually certain, so that will be each
When load unit switches in the backup power source, discard portion load unit is needed, so that the current load capacity of the backup power source
Without departing from its maximum power supply capacity, to guarantee to export normal voltage.Such as the maximum power supply capacity of the backup power source is X
=10, load unit and load are A=2, B=3, C=4, D=3 and E=5 respectively, if only cut load unit A, B, C and
D, then the present load of the backup power source is 12 greater than X, can not provide normal power source, if only cutting A and E, present load is
7, it there remains 3 load capacity, in turn result in the resource free time.
In addition, since backup power source or emergency power supply are formed by more generator parallels, the backup power source or this answer
In the power supply process in urgent telegram source, when wherein one or more generator parallel failure, such as damage, line fault etc., it will lead
Causing the maximum power supply capacity of the backup power source reduces, so that it possibly can not provide current load capacity, also just not can guarantee confession
Electric reliability, therefore the necessity for part spare capacity of also withing a hook at the end.
Summary of the invention
It is an object of the present invention to provide one, based on load actual capacity, more power supplys of switching automatically switch to control step by step
System processed, the common power supply in power supply system ensure the spare/emergency power supply into spare/emergency power supply handoff procedure
At least two generator parallels after, can guarantee normal power supply, to guarantee power supply reliability, and from spare/emergency power supply
Into common power supply handoff procedure, first gradually off-load, avoids once resecting heavy load, causes standby power system physical damnification, subtract
It carries and completes to be switched to common power supply again.
It is another object of the present invention to provide one based on load actual capacity step by step switching more power supplys automatic switchover
Control system can satisfy client according to each load unit of load important sequence step -by -step switch.
It is another object of the present invention to provide one based on load actual capacity step by step switching more power supplys automatic switchover
The high load unit of importance first can be put into the power supply by control system.
It is another object of the present invention to provide one based on load actual capacity step by step switching more power supplys automatic switchover
Control system guarantees that the current load capacity of the spare/emergency power supply does not exceed its maximum after putting into each load unit
Power supply capacity.
It is another object of the present invention to provide one based on load actual capacity step by step switching more power supplys automatic switchover
Control system can make the current load capacity of spare/urgently needed power supply reach its maximum as far as possible after putting into each load unit
It is idle to reduce resource for power supply capacity.
It is another object of the present invention to provide one based on load actual capacity step by step switching more power supplys automatic switchover
Control system can adjust working as the spare/emergency power supply in the power supply process of the backup power source or the emergency power supply in real time
Preceding load capacity is no more than its maximum power supply volume always, and to prevent, wherein one or more generators are suddenly and machine fails and leads to nothing
Method normal power supply.
It is another object of the present invention to provide one based on load actual capacity step by step switching more power supplys automatic switchover
Control system can carry out information exchange with user.
One aspect under this invention, the present invention further provides more than one power supply automatic switching control system, for will be each
Load unit is formed according to one power supply of load important sequence step -by -step switch, the power supply by least two generator parallels comprising:
One maximum power supply capacity obtains module；
One load important obtains module；
One sequentially switching module；
One current load capacity detection module；And
One load judgment module, wherein the maximum power supply capacity obtains the maximum power supply capacity that module obtains the power supply,
The load important obtains the importance priority that module obtains each load unit, and the sequentially investment module is according to importance
Each load unit is successively put into the power supply by priority sequence, and the current load capacity detection module detects the power supply
Current load capacity, the specified appearance for next load unit that the load judgment module judgement is put by importance sequence
Amount is less than the maximum power supply capacity and this has currently put into the difference of load capacity, then the module that sequentially puts into is by the load list
Member puts into the power supply.
The load judgment module judgement is big by the rated capacity of next load unit of importance sequence investment
The difference of load capacity is currently put into this in the maximum power supply capacity, then switching terminates.
It further includes that a load unit rated capacity obtains module, obtains the rated capacity of each load unit, and should
The rated capacity of each load unit is supplied to the load judgment module, so that the load judgment module can judge that this is next
The rated capacity of a load unit or the actual capacity recorded and the maximum power supply capacity and this currently put into load capacity
Difference size.
According to one embodiment of present invention, further include a default load unit switching module, be used for preset M
Load unit to put into the power supply in advance, and wherein the load total capacity of the M load unit is no more than the maximum power supply of the power supply
Capacity, then each load unit is successively thrown other load units according to importance sequence by the sequentially investment module
Enter the power supply, until switching terminates.
It further includes a delay switching module, is used to preset a switching time T1, every to pass through switching time T1, is carried out
Following steps A, the current load capacity detection module detect the current load capacity of the power supply, then by the load judgment
Module judges whether the rated capacity of the next load unit put by importance sequence is less than the maximum power supply capacity
The difference of load capacity is currently put into this, if so, the sequentially investment module continues to put into the load unit into the electricity
Source, and repetitive cycling step A after switching time T1 delay is waited for, until switching terminates.
Wherein, the sequentially investment module, which successively puts into the M load unit according to load important sequence, is somebody's turn to do
Power supply.
It includes one group of generator rated capacity and system safe spare power supply capacity that the maximum power supply capacity, which obtains module,
Module, one group of generator parallel state acquisition module and a maximum power supply capacity computing module are obtained, wherein the generator volume
Constant volume and system safe spare power supply capacity obtain the rated power supply capacity and the hair that module obtains each generator of the power supply
The safe spare power supply capacity of power-supply system being set, simultaneously machine is successfully each for the generator parallel state acquisition module acquisition
Generator, the maximum power supply capacity computing module is according to this and machine successfully each generator specified confession corresponding with the generator
Capacitance, and deduct the maximum power supply capacity that the power supply is calculated after the system safe spare power supply capacity that can set.
The current load capacity detection module includes a system voltage sampling module, present load real-time current sampling
Module, a load unit state acquisition module and a current load capacity computing module, wherein the system voltage sampling module
The system voltage of the power supply is sampled, the present load real-time current sampling module samples the real-time current of each load unit, institute
It states each load of load unit state acquisition module acquisition to put into operation status information, according to the system voltage, the reality respectively loaded
When electric current and each load put into operation status information, the current load capacity computing module calculates this and has currently put into load
Capacity.
It further includes an interaction port, is used to carry out information exchange with user, be obtained from user to the load important
Modulus block inputs each high low priority of load unit importance, puts into advance to the default load unit switching module input
The M load unit, Xiang Suoshu generator rated capacity and system safe spare power supply capacity obtain module and input each motor
It is defeated to input switching time T1, Xiang Suoshu load unit rated capacity acquisition module to the delay switching module for rated capacity
Enter the rated capacity of each load unit.
It further includes that a delay checks that module, an active volume obtain module, a safe bearing load judgment module and one sequentially
Module is cut off, wherein the active volume obtains the safe spare capacity that module detects the power supply, wherein the delay checks mould
Block is predetermined a review time T2, every to pass through review time T2, follows the steps below B, and the current load capacity detects mould
Block detects the current load capacity of the power supply, and the safe bearing load judgment module judges the maximum power supply capacity of the power supply and deserves
Whether the preceding difference for having put into load capacity is greater than the safe spare capacity, if so, not operating, if it is not, described in then sequentially
Excision module cuts off each load unit for having put into the power supply according to the connection of the load unit and the power supply of lowest priority,
And wait for repetitive cycling step B after time T2 delay.
It further includes all except switch module, is selectively executed the beginning and end of step B.
It is combined by the group of above-mentioned more power supply automatic switching control systems and is realized in fact by publicly-owned or privately owned communications protocol
When principal and subordinate's working method for communicating is integrated forms
More than one power supply auto-changeover control puts into multi-load element method comprising following steps:
A, the maximum power supply capacity of a power supply and the importance priority of each load unit are obtained；
B, it detects the power supply current load capacity and judges the next load unit put by importance sequence
Whether rated capacity is less than the maximum power supply capacity and this has currently put into the difference of load capacity；
If c, being less than, which is put into the power supply, and repeat step b, if more than then switching knot
Beam.
Detailed description of the invention
Fig. 1 is the according to priority sequence of more power supply automatic switching control systems according to a preferred embodiment of the present invention
The module diagram of switching.
Fig. 2 is the preset M of investment of more power supply automatic switching control systems according to a preferred embodiment of the present invention
The module diagram of a load unit.
Fig. 3 is that more power supply automatic switching control systems according to a preferred embodiment of the present invention are current negative according to detection
Carry the module diagram of capacity sequentially switching.
Fig. 4 is the maximum power supply capacity of more power supply automatic switching control systems according to a preferred embodiment of the present invention
Obtain the module diagram of module.
Fig. 5 is the current load capacity of more power supply automatic switching control systems according to a preferred embodiment of the present invention
The module diagram of detection module.
Fig. 6 is the mould of the delay switching of more power supply automatic switching control systems according to a preferred embodiment of the present invention
Block schematic diagram.
Fig. 7 is the mould of the implementation structure of more power supply automatic switching control systems according to a preferred embodiment of the present invention
Block schematic diagram.
Fig. 8 is the collection integrated by multiple more power supply automatic switching control systems according to a preferred embodiment of the present invention
The module diagram of the more power supply automatic switching control systems of an accepted way of doing sth.
Fig. 9 is the mould of more power supply automatic switching control systems according to a preferred embodiment of the present invention sequentially cut off
Block schematic diagram.
Specific embodiment
It is described below for disclosing the present invention so that those skilled in the art can be realized the present invention.It is excellent in being described below
Embodiment is selected to be only used as illustrating, it may occur to persons skilled in the art that other obvious modifications.It defines in the following description
Basic principle of the invention can be applied to other embodiments, deformation scheme, improvement project, equivalent program and do not carry on the back
Other technologies scheme from the spirit and scope of the present invention.
It will be understood by those skilled in the art that in exposure of the invention, term " longitudinal direction ", " transverse direction ", "upper",
The orientation or position of the instructions such as "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside"
Relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplification of the description, rather than
The device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, therefore above-mentioned
Term is not considered as limiting the invention.
It is understood that term " one " is interpreted as " at least one " or " one or more ", i.e., in one embodiment,
The quantity of one element can be one, and in a further embodiment, the quantity of the element can be it is multiple, term " one " is no
It can be interpreted as the limitation to quantity.
The present invention provides the more power supply automatic switching control systems based on load actual capacity switching step by step, is in power supply
Common power supply in system ensures at least two generators of the spare/emergency power supply simultaneously into spare/emergency power supply handoff procedure
After machine, normal voltage can be exported, to guarantee power supply reliability, and makes each load unit should according to sequence of importance step -by -step switch
Spare/emergency power supply.
In daily life, the power grid that people generally use is provided by common power supply (Generator Set), and incident is worked as
Meet emergency situations such as power station and save voltage or the damage of common power supply etc. so that the common power supply can not normal power supply when, people
It need to be by switchings such as the load of each load unit such as different community, laboratory load, industrial load, school's load or Office Area loads
It puts into the spare/emergency power supply such as more 0.4kv/6kv/10kv/20kv diesel-driven generators and machine forms, to guarantee people's
Household electricity demand.But the maximum power supply capacity of the spare/emergency power supply is usually that not can guarantee whole each load units
Normal electricity consumption, more power supply automatic switching control system energy based on load actual capacity step -by -step switch provided by the invention
Enough by each unit according to the sequence of importance step -by -step switch of the user preset spare/emergency power supply, preferentially to guarantee importance
The high load unit of priority is put into the spare/emergency power supply, such as the priority highest of laboratory load, then first by the reality
It tests room load and accesses the spare/emergency power supply, to ensure that laboratory load is first energized operation.Then, more power supplys from
Dynamic switching system also ensures the occupied current load capacity summation of each load unit being currently put into most without departing from this
Big power supply capacity, to guarantee that the spare/emergency power supply being capable of normal power supply, it is ensured that power supply reliability.
More than one power supply automatic switching control system 100 of the preferred embodiment of the present invention as shown in Figures 1 to 9, for inciting somebody to action
Each load unit 200 puts into a power supply 300 comprising a maximum power supply capacity obtains module 10, a load important obtains mould
Block 20, one sequentially switching module 30, a current load capacity detection module 40 and a load judgment module 50, wherein the maximum
Power supply capacity obtains the maximum power supply capacity S that module 10 obtains the power supply 300, it is preferable that the power supply 300 is by more generators
And machine forms, wherein the rated current of every generator may be different or the same, and ought a wherein generator not work
When making, the working condition of other generators will not influence, the maximum power supply capacity S that will result only in the power supply 300 is reduced, without
The power supply 300 is set to stop output electric energy.That is, the maximum power supply capacity obtains module 10 and can obtain the power supply 300
Normal work each generator parallel after maximum power supply capacity S, i.e., the power supply 300 can normally export maximum for capacitor
Measure S.
The load important obtains the importance priority sequence that module 20 obtains each load unit 200, as this is each negative
Carrier unit 200 include one group of load unit 201/202/203/204/205, can also have certainly it is more or fewer, by excellent
First grade height sequence is followed successively by 205/204/203/202/201, is only for example herein.It should be noted that the load important
Property obtain module 20 and be also possible to obtain each load unit according to priority sequence sequence from low to high or other rows
Sequential mode such as in point sequence, nearby sequence or bubble sort only choose priority from height in the preferred embodiment
To low sequence.
Each load unit 200 is successively put into the power supply 300 according to importance sequence by the sequentially investment module 30,
It is described sequentially to put into module 30 when if you need to which load unit 201/202/203/204/205/206... being put into the power supply 300
The power supply 300 is gradually put into according to load unit 205/204/203/202/201/206..., to guarantee highest priority
Load unit 205 is first put into the power supply 300, then gradually puts into remaining load unit 204/203/202/201/
206...。.
The current load capacity detection module 40 detects the current load capacity L of the power supply 300, it is preferable that this is current
Having put into load capacity L is currently to be accessed the sum of actual loading capacity of each load unit of the power circuit, in other words, should
Currently put into load capacity L be the occupied power circuit of each load unit currently accessed actual loading capacity it
With.For example, current load capacity L is equal to the load unit when the load unit 203/204/205 is put into the power supply
203/204/205 occupied actual loading total capacity.
When the sequentially switching module 30 will sequentially put into next load unit X1, the load judgment module 50
The practical appearance for judging the rated capacity of the next load unit X1 put by importance priority sequence or having recorded
Amount whether is less than the maximum power supply capacity S and this has currently put into the difference D of load capacity L, if so, described sequentially put into mould
Load unit X1 is put into the power supply by block 30, so that after putting into next load unit X1, the present load of the circuit
Total capacity L1 does not still exceed maximum power supply capacity S, and otherwise without switching, and switching terminates.
It should be noted that the rated capacity of each load unit or the actual capacity recorded are the load unit quilts
Occupied rated load-capacity after investment circuit, i.e., when the load unit operates normally, the nominal load which provides holds
The rated current of amount or the load unit.Under normal conditions, after the load unit is put into the circuit, which is mentioned
The actual loading capacity of confession is less than the rated load-capacity of the load unit, to ensure that the load judgment module 50 judges
When the rated capacity of next load unit X1 or the actual capacity recorded are less than difference D, the sequentially switching module
After load unit X1 is put into the circuit of the power supply 300 by 30, the present load total capacity L1 of the power supply does not exceed this always
Maximum capacity S.
For example, after the load unit 203/204/205 is put into the power supply, according to priority orders, it is described sequentially
Switching module 30 will put into next load unit 202, before the switching load unit 202, the load judgment mould
Block 50 judges the difference of the maximum power supply capacity S1 and the current occupied load total capacity L1 of load unit 203/204/205
Whether D1 is greater than the rated capacity L202 of the load unit 202, if more than then the sequentially switching module 30 is by the load unit
202 put into the power supply, so that it is single that the present load unit of the power supply is changed to load after putting into the load unit 202
Member 202/203/204/205, current load capacity L1 are the negative of the occupied circuit of load unit 202/203/204/205
Carry the sum of capacity, i.e. L1 is not more than maximum power supply capacity S always, with guarantee the power supply can normal output voltage, with
Ensure power supply reliability.
And when the load judgment module 50 judgement is single by next load of importance priority sequence investment
The rated capacity of first X1 be greater than the maximum power supply capacity S and this when currently having put into the difference D of load capacity L, then described in sequentially
Next load unit X1 is not put into the circuit of the power supply by switching module 30, and switching terminates, and the power supply is only for load
Each load unit being currently put into.Such as above-mentioned citing, before putting into the load unit 202, the load judgment mould
Block 50 judges the difference of the maximum power supply capacity S1 and the current occupied load total capacity L1 of load unit 203/204/205
D1 is less than the rated capacity of the load unit 202, i.e., the load unit 202 is not put into the circuit, and terminate switching, so that should
The load that power supply is currently put into only remains load unit 203/204/205, still ensures that the power supply is capable of providing reliably
Output voltage.
It is noted that when the load judgment module 50 judgement by importance priority sequence investment this under
The rated capacity of one load unit X1 or the actual capacity recorded be less than the maximum power supply capacity S currently put into this it is negative
The difference D of capacity L is carried, and after the load unit is put into the power supply 300 by the sequentially switching module 30, then carries out following throw
Step A is cut, the current load capacity detection module 40 detects increase again and is put into the electricity after next load unit X1
The current load capacity L2 in source 300, then the load judgment module 50 judges to throw by importance priority sequence again
Whether the rated capacity of next one load unit X2 entered is less than the maximum power supply capacity S and this has currently put into load capacity
The difference D2 of L2, if it is not, then the sequentially switching module 30 does not put into load unit X2, and switching terminates i.e. step A
Terminate, if so, step A is recycled, until switching terminates.
Such as the example above, the load judgment module 50 judges the maximum power supply capacity S1 and the current load unit 203/
The difference D1 of 204/205 occupied load total capacity L1 is greater than the rated capacity L202 of the load unit 202, then by the load
Unit 202 puts into the power supply 300.Then step A is executed, the current load capacity detection module 40 detects current negative again
Capacity L2 is carried, L2=L1+L202, the load judgment module 50 judge that the maximum power supply capacity S has currently been put into this at this time
Whether the difference of load capacity L2 is less than the rated capacity L201 of the load unit 201, if being less than, does not put into the load unit
201, and switching terminates, so that each load unit for being put into the power supply 300 is load unit 202/203/204/205, if
It is greater than, then continues cycling through step A, until switching terminates, is always ensured that the power supply reliability of the power supply.
As shown in figure 3, more power supply automatic switching control systems 100 further include that a load unit rated capacity obtains mould
Block 60, the actual capacity for being used to obtain the rated capacity of each load unit 200 or having recorded such as obtain the load unit 201/
202/203/204/205/206.. each rated capacity L201/L202/L203/L204/L205/L206.., and by each load
The rated capacity of unit 200 is supplied to the load judgment module 50, so that the load judgment module can judge that this is next
The rated capacity of a load unit or the actual capacity recorded and the maximum power supply capacity and this currently put into load capacity
Difference size.Preferably, the rated capacity of each load unit 200 is by user preset, which can be according to each negative
Type of carrier unit such as quantity, model, rated current etc. presets the rated capacity of each load unit, is artificially manipulated with increase steady
It is qualitative.Under normal conditions, the load unit rated capacity, which obtains module 60, will record each load unit 200 in access electricity
After actual capacity behind road, when accessing the load unit 200 again, to enable the load judgment module 50 according to this
The actual capacity of the load unit recorded carries out judgement comparison, more accurately, quickly.
As shown in Fig. 2, in the present embodiment, more power supply automatic switching control systems 100 further include a default load
M load unit being predetermined first is put into the power supply 300 by unit switching module 70, which is user preset
Highest priority several load units, wherein the load total capacity L0 of the M load unit be no more than the power supply maximum
Power supply capacity S, and the M load unit is first put by the power supply 300 by the sequentially switching module 30, first will with meeting user
Certain important load units preferably access the power supply 300, and the M load unit is enable to operate normally in advance.Preferably,
The M load unit is successively put into the power supply 300. in other words according to priority sequence by the sequentially switching module 30
Say, when each load unit 200 is cut the power supply 300, the sequentially switching module 30 be first about to the M load unit by
The power supply 300 is successively put into according to importance priority sequence, judges the power supply without the load judgment module 50
Whether the 300 present load total capacity L0 for loading the M load unit are greater than the maximum power supply capacity S of the power supply 300, to ensure
The M load unit is preferably put into the power supply 300, meets user demand.Certainly, the sequentially switching module 30 can not also
Put into the M load blocks according to priority sequence, be also possible to according to put in order or nearby sequence successively by the M
Load blocks put into the power supply 300, are also possible to by several in the M or all while putting into the power supply 300 simultaneously.
After the M load unit is put into power supply 300 by the sequentially switching module 30, start to carry out step A, i.e.,
Each load unit is successively put into the electricity according to importance sequence by other load units by the sequentially investment module 30
Source, until switching terminates.Such as 300 after the M load unit to be put into the power supply after, remaining load unit includes
Load unit 201/202/203/204/205/206..., and the priority sequence consensus of such as the example above, execute step A,
The i.e. described current load capacity detection module 40 detects the current load capacity L0 of the M load unit, the load judgment mould
Block 50 judges that this has currently put into load capacity L0 and whether the difference D0 of maximum power supply capacity S is greater than the load unit 205
Rated load-capacity L205, if being less than, the sequentially switching module 30 does not put into the load unit 205, and terminates switching,
So that the present load of the power supply 300 is the M load unit, to guarantee the power supply reliability of present load, if more than then will
The load unit 205 puts into the power supply 300, and recycles step A, until switching terminates.
As shown in fig. 6, more power supply automatic switching control systems 100 further include a delay switching module 80, it is used for
A default switching time T1, it is every by being somebody's turn to do after the M load unit is put into the power supply 300 by the sequentially switching module 30
Switching time T1, follows the steps below A, i.e., the described current load capacity detection module 40 detects the current load capacity of the power supply
L, then by the load judgment module 50 judgement by the rated capacity of next load unit of importance sequence investment
Whether it is less than the maximum power supply capacity S and this has currently put into the difference D of load capacity L, if so, described sequentially puts into module
The load unit is put into the power supply 300 by 30, and waits for repetitive cycling step A after switching time T1 delay, until
Switching terminates.
In other words, described current by switching time T1 after the M load unit is sequentially put into the power supply
Load capacity detection module 40 detects the current load capacity L0 of the M load unit, is judged by the load judgment module 50
Whether the difference D0 for currently having put into load capacity L0 and maximum power supply capacity S is greater than the specified negative of next load unit
Capacity L1 is carried, if being less than, the sequentially switching module 30 does not put into the load unit, and terminates switching, so that the power supply 300
Present load be the M load unit, if more than the load unit then being put into the power supply 300, and pass through the switching time
After T1, the current load capacity detection module 40 detects the current load capacity L2 of the M+1 load unit, and the load is sentenced
Disconnected module 50 judges whether S-L2 is greater than the rated load-capacity L2 of next load unit, if being less than, switching terminates, if greatly
In then the detection of continuation repetitive cycling judges switching, i.e. repetitive cycling step A after switching time T1, until switching knot
Beam.
As shown in figure 4, it includes one group of generator rated capacity and system safety that the maximum power supply capacity, which obtains module 10,
11, one groups of generator parallel state acquisition modules 12 of stand-by power supply procurement of reserve capacity module and a maximum power supply capacity computing module
13, wherein the generator rated capacity and system safe spare power supply capacity obtain each generator that module 11 obtains the power supply
Rated power supply capacity and the power-supply system the safe spare power supply capacity being set, can be with according to the model of every generator
Determine the rated power supply capacity of each generator, the motor and machine state acquisition module 12 acquire in the power supply 300 and machine success
Each generator information, i.e., the information such as successful and machine generator quantity and model, the maximum power supply capacity computing module 13
According to the successful each generator information rated power supply capacity corresponding with the generator of this and machine, and deduct the safety that can be set
The maximum power supply capacity S of the power supply 300 is calculated after stand-by power supply capacity, so that the load judgment module 40 calculates and works as
The difference D of preceding load capacity S.It should be noted that the calculation for obtaining maximum power supply capacity S is not the present embodiment citing
One kind, using other modes and the maximum can be calculated for capacity S.
As shown in figure 5, the current load capacity detection module 40 includes that a system voltage sampling module 41, one is currently negative
Real-time current sampling module 42, a load unit state acquisition module 43 and a current load capacity computing module 44 are carried, wherein
The system voltage sampling module 41 samples the system voltage of the power supply 300, the present load real-time current sampling module 42
Sample the real-time current of each load unit 200, the load unit state acquisition module 43 acquires each load and puts into operation state
Information, puts into operation status information according to the system voltage, the real-time current respectively loaded and each load, and the present load is held
Amount computing module 44 calculates this and has currently put into load capacity L, supplies so that the load judgment module 40 is calculated with the maximum
The difference D of capacitance S.
Preferably, more power supply automatic switching control systems 100 are furnished with 6 road individual event current sampling devices and 2 road three-phases
Voltage sampling apparatus, i.e., the described system voltage sampling module 41 are implemented as 2 road three-phase voltage sampling apparatuses, are used in the throwing
Cut the interior multiple groups three-phase voltage amount acquired in the power source bus of time T1 such as (0-100V or 0-57.7V), the present load is real
It applies current sampling module 42 and is implemented as 6 road individual event current sampling devices, being used in switching time T1 acquire respectively should
The multiple groups single-phase electricity flow of 6 load units of wherein 6 branches of power supply such as (0-1A or 0-5A), adopt by the load unit state
Quantity, the type for the load unit that the load unit information to put into operation in every road of the collection acquisition of module 43 power supply such as puts into operation
Number etc., it is every to pass through switching time T1, whenever increasing or decreasing the load unit of investment, the load unit state acquisition mould
Block 43 still is able to detect the status informations such as quantity or the model of the load unit currently to have put into operation.According to the multiple groups three
Phase voltage amount, the multiple groups single-phase electricity flow on every road and the load put into operation status information, and the current load capacity calculates
Module 44 calculates this and has currently put into load capacity L.It certainly, in the present embodiment by way of example only, can also be more
Detection mode this be calculated currently put into load capacity L, such as detect instantaneous voltage, realtime power or effective current
Deng.
As shown in Figure 7 and Figure 8, in order to make the power supply 300 can adapt to put into more load units, the present invention also provides
The more power supply automatic switching control systems 400 of one integrated form are integrated by least two more power supply automatic switching control systems 100
It forms, wherein the more power supply automatic switching control systems 400 of the integrated form include a main control unit 401 and an at least expansion module
402/403/404/405..., wherein by publicly-owned or privately owned between the main control unit 401 and the expanding element 402
Communications protocol realizes real-time communication, wherein machine tool of the main control unit 401 as all calculating and control logic, the extension
Module 202/403/404/405... is communicatively coupled to the main control unit 401, to make under principal and subordinate's working method
More load units can be put by obtaining the power supply 300.In other words, power supply automatic switching control system 401 more than one is logical
It crosses and extends N number of more power supply automatic switching control system 402/403/404/405.., wherein N is more than or equal to N/6, so that described in N+1
More power supply automatic switching control systems 100 are integrated the integrated form automatic switching control system 400, and the integrated form is cut automatically
The power supply 300. can gradually be put by importance priority sequence to 6N load unit realization by changing control system 400
It should be pointed out that more power supply automatic switching control systems can be and adopt including one group of single-phase/three-phase electric current
Sampling device, one group of three-phase voltage sampling apparatus and a processor, wherein the single-phase/three-phase current sampling device is more for sampling
The current value of each load unit branch of group, wherein the three-phase voltage sampling apparatus is used to sample the three-phase voltage of the multiple groups power supply
Value wherein the maximum power supply capacity and current load capacity of the power supply is calculated in the processor, and judges high by importance
The rated capacity of next load unit of low sequence investment whether is less than the maximum power supply capacity and this has currently put into load
The difference of capacity, if more than then switching terminates, if being less than, which is put into the power supply by the sequentially investment module.
In other words, it can be integrated into the processor in the above-mentioned each module of the present embodiment, to realize unitized logic control.
More power supply automatic switching control systems 100 further include an interaction port 90, are used to carry out information with user
Interaction obtains module 20 to the load important from user and inputs each high low priority of load unit importance, to described pre-
If load unit switching module 70 inputs the M load unit put into advance, Xiang Suoshu Rated motor capacity and system safety
Stand-by power supply procurement of reserve capacity module 11 inputs the rated capacity of each motor and sets the safe spare power supply capacity of the power-supply system,
Module 60, which is obtained, to the delay switching module 80 input switching time T1, Xiang Suoshu load unit rated capacity inputs each bear
The rated capacity of carrier unit, to increase artificial controllability, setting property, it is thus evident that the interactive port 90 can be wired
Or each relevant information of wireless transmission.
As shown in figure 9, more power supply automatic switching control systems 100 further include that a delay checks that module 501, one is available
Procurement of reserve capacity module 502, a safe bearing load judgment module 503 and one sequentially cut off module 504, wherein the active volume obtains
Module 502 obtains the safe spare capacity of the power supply, preferably inputs the safe spare capacity by user, wherein the delay is examined
It looks into module 501 and is predetermined a review time T2, check that the input of module 501 should to the delay by the interactive port 90 from user
Review time T2.It is every to pass through the review time T2 when each load unit in the circuit is run, B is followed the steps below, it is described
Current load capacity detection module 502 detects the current load capacity L of the power supply, and the safe bearing load judgment module 503 judges
Whether the maximum power supply capacity S of the power supply and the difference D for currently having put into load capacity L are greater than the safe spare capacity, if
It is not operate then, if it is not, then the sequentially excision module 504 will put into each load unit of the power supply according to minimum excellent
The connection of the load unit and the power supply of first grade is cut off, and waits for repetitive cycling step B after time T2 delay, with true
The power supply 300 is protected when running each load unit, safe spare capacity can be remained, to increase power supply reliability.
More power supply automatic switching control systems 100 further include all except switch module 505, are selectively executed
The beginning and end of step B enables the user to selection and executes or do not execute step B, to increase artificial controllability.
It therefore, can be in the interactive port 90 when user needs from spare/emergency power supply to common power supply handoff procedure
Off-load instructs step by step for input, and obtaining module 502 to obtain the safe spare capacity of the power supply by the active volume is the power supply
Maximum power supply capacity S, so that the sequentially excision module 504 is every to pass through mute time T2 one load unit of off-load step by step, directly
It all puts into common power supply, and then avoids until by whole load unit complete resections, and by the load unit of excision
Once resecting heavy load causes the spare/emergency power system physical damnification, and off-loads is waited to be switched to common power supply again after the completion,
To guarantee system safety.
It should be understood by those skilled in the art that foregoing description and the embodiment of the present invention shown in the drawings are only used as illustrating
And it is not intended to limit the present invention.The purpose of the present invention has been fully and effectively achieved.Function and structural principle of the invention exists
It shows and illustrates in embodiment, under without departing from the principle, embodiments of the present invention can have any deformation or modification.
Claims (12)
1. more than one power supply automatic switching control system, for each load unit is electric according to load important sequence step -by -step switch one
Source, the power supply are formed by least two generator parallels characterized by comprising
One maximum power supply capacity obtains module；
One load important obtains module；
One sequentially switching module；
One current load capacity detection module；And
One load judgment module, wherein the maximum power supply capacity obtains the maximum power supply capacity that module obtains the power supply, it is described
Load important obtains module and obtains the importance priority of each load unit that can be set, it is described sequentially put into module according to
Each load unit is successively put into the power supply by importance priority sequence, and the current load capacity detection module detection should
The present load real time capacity of power supply, next load list that the load judgment module judgement is put by importance sequence
The rated capacity of member is less than the maximum power supply capacity and this has currently put into the difference of load capacity, then described sequentially to put into module
The load unit is put into the power supply.
2. more power supply automatic switching control systems according to claim 1, wherein load judgment module judgement is by important
Property sequence investment next load unit rated capacity or record actual capacity be greater than the maximum power supply capacity and
When this has currently put into the difference of load capacity, then switching terminates.
3. more power supply automatic switching control systems according to claim 2 further include a default load unit switching module,
For M load unit being predetermined first to be put into the power supply, wherein the load total capacity of the M load unit is no more than the electricity
The maximum power supply capacity in source, then other load units successively will by the sequentially investment module according to importance sequence
Each load unit puts into the power supply, until switching terminates.
4. more power supply automatic switching control systems according to claim 3 further include a delay switching module, are used for pre-
It is every to pass through switching time T1 if a switching time T1, follow the steps below A, the current load capacity detection module detection
The current load capacity of the power supply, then by load judgment module judgement by the next negative of importance sequence investment
Whether the rated capacity of carrier unit or the actual capacity of record are less than the maximum power supply capacity and this has currently put into load capacity
Difference and wait for the switching time if so, the sequentially investment module continues to put into the load unit into the power supply
Repetitive cycling step A after T1 delay, until switching terminates.
5. more power supply automatic switching control systems according to claim 3, wherein the sequentially investment module loads this M
Unit successively puts into the power supply according to load important sequence.
6. more power supply automatic switching control systems according to claim 4, wherein the maximum power supply capacity obtains module packet
It includes one group of generator rated capacity and system safe spare power supply capacity obtains module, one group of generator parallel state acquisition module
With a maximum power supply capacity computing module, wherein the generator rated capacity obtains each generator that module obtains the power supply
The system safe spare power supply capacity of rated power supply capacity and the power-supply system being set, the generator parallel state acquisition
Module acquisition and the successful each generator of machine, the maximum power supply capacity computing module according to should and machine successfully each generator with
The corresponding rated power supply capacity of the generator, and the power supply is calculated after deducting the system safe spare power supply capacity being set
Maximum power supply capacity.
7. more power supply automatic switching control systems according to claim 6, wherein the current load capacity detection module packet
Include a system voltage sampling module, a current multichannel loading real-time current sampling module, a load unit state acquisition module and
One current load capacity computing module, wherein the system voltage sampling module samples the system voltage of the power supply, it is described current
Multichannel loading real-time current sampling module samples the real-time current of each load unit, the load unit state acquisition module acquisition
Each load puts into operation status information, is put into operation state according to the system voltage, the real-time current respectively loaded and each load
Information, the current load capacity computing module calculate this and have currently put into load capacity.
8. more power supply automatic switching control systems according to claim 7, wherein the system voltage sampling module be 2 tunnels and
More multichannel three-phase alternating voltage sampling apparatus, it is that 6 tunnels and more multichannel are single-phase or three that current sampling module is implemented in the present load
Phase alternating current sampling module.
9. more power supply automatic switching control systems according to claim 7 further include an interactive module, be used for and user into
Row information interaction obtains module to the load important from user and inputs each high low priority of load unit importance, to institute
It states default load unit switching module and inputs the M load unit put into advance, Xiang Suoshu Rated motor capacity and system peace
Full stand-by power supply procurement of reserve capacity module inputs the rated capacity of each motor and the system safe spare power supply capacity of the power supply, to institute
State delay switching module input switching time T1, Xiang Suoshu load unit rated capacity obtain module input each load unit
Rated capacity.
10. according to claim 1 to 9 any more power supply automatic switching control systems, further include a delay check module,
One active volume obtains module, a safe bearing load judgment module and one sequentially cuts off module, wherein the active volume obtains mould
Block obtains the safe spare capacity of the power supply, wherein the delay checks that module is predetermined a review time T2, it is every to pass through the inspection
Time T2 is looked into, follows the steps below B, the current load capacity detection module detects the current load capacity of the power supply, described
Safe bearing load judgment module judges that the maximum power supply capacity of the power supply has currently put into the difference of load capacity with this and whether has been greater than
The safe spare capacity, if so, not operating, if it is not, then the sequentially excision module will put into each load of the power supply
Unit is cut off according to the connection of the load unit and the power supply of lowest priority, and repeats to follow after waiting for time T2 delay
Ring step B.
11. the more power supply automatic switching control systems of an integrated form characterized by comprising by claims 1 to 10 any one
Or more group's combinations is realized that principal and subordinate's working method of real-time communication is integrated by publicly-owned or privately owned communications protocol and is formed.
12. more than one power supply auto-changeover control puts into multi-load element method, which comprises the following steps:
A, the maximum power supply capacity of a power supply and the importance priority of each load unit are obtained；
B, it detects the power supply current load capacity and judges the specified of the next load unit put by importance sequence
Whether capacity is less than the maximum power supply capacity and this has currently put into the difference of load capacity；
If c, being less than, which is put into the power supply, and repeat step b, if more than then switching terminates.
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| CN201810273364.5A CN110323831A (en) | 2018-03-29 | 2018-03-29 | More power supply automatic switching control systems based on load actual capacity switching step by step |
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| CN201810273364.5A CN110323831A (en) | 2018-03-29 | 2018-03-29 | More power supply automatic switching control systems based on load actual capacity switching step by step |
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