CN110247471A - More power backup power supplys automatically engage method - Google Patents
More power backup power supplys automatically engage method Download PDFInfo
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- CN110247471A CN110247471A CN201910632128.2A CN201910632128A CN110247471A CN 110247471 A CN110247471 A CN 110247471A CN 201910632128 A CN201910632128 A CN 201910632128A CN 110247471 A CN110247471 A CN 110247471A
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- power supply
- branch
- power source
- backup power
- switch
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Stand-By Power Supply Arrangements (AREA)
Abstract
A kind of more power backup power supplys provided by the invention automatically engage method, comprising: the spare investment priority of initialization the first backup power source branch and the second backup power source branch；When block switch is closed, first switch or third close the switch, when second switch and the 4th switch disconnect, judge the first power supply buses and the second power supply buses whether decompression, if so, continue to judge the first common power branch or the second common power branch whether decompression, if the first common power branch or the second common power branch decompression, then tripping first switch and third switch, close the switch that the higher backup power source branch of priority is connect with bus according to the spare investment priority of initialization；The present invention first finds the power branch for causing bus loss of pressure after two bus loss of pressure, is then switched to corresponding backup power source branch again, and reliable and stable standby electric power automatic throwing method can be provided for the high-tension apparatus current supply circuit of more power supplys.
Description
Technical field
The present invention relates to power electronics fields, and in particular to a kind of more power backup power supplys automatically engage method.
Background technique
In recent years, in power grid, especially into the power grid of the biggish industrial park power supply of electricity consumption, widely using more
Road power supply power supply.Common power supply line's structure is the structure that two-way often uses power branch and two-way backup power source branch, the confession
In electric wire line structure, two-way often often uses common-tower double-return line erection mode to be connected on same with the input terminal of power branch
Grade bus, then powered by same junior's bus to load branch circuit, and the input terminal of two-way backup power source branch is often connected to
It is not often same higher level's bus, to facilitate the laying of power transmission line with the nearest higher level's bus of two power supply buses.Two-way is normal
The probability for deactivating double-circuit line when with power supply branch line road simultaneous faults and maintenance simultaneously is larger, so exporting to load branch circuit
It holds the power supply reliability of the electrical equipment of connection poor, can not continuously power for industrial park or industrial enterprise.Further, since two-way
The input terminal of backup power source branch is connected to different higher level's buses, the relevant parameter of different higher level's buses not fully one
Sample, therefore in the case where the output end of two-way backup power source branch is respectively connected to two power supply buses simultaneously, two power supply buses
It can not connect, to avoid failure, this will lead to in-put of spare power supply current supply circuit and is easy to happen failure, cause entire more
The stability in road power supply power supply circuit reduces, or even there are biggish security risks.
It is therefore proposed that a kind of standby electric power automatic throwing method for above-mentioned power supply line's structure.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of more power backup power supplys to automatically engage method, it can be mostly electric
The high-tension apparatus current supply circuit in source provides reliable and stable standby electric power automatic throwing method, meets industrial park or industrial enterprise
Continuous power reguirements.
The present invention provides a kind of more power backup power supplys and automatically engages method, and the high-tension apparatus applied to more power supplys is powered back
Road, the high-tension apparatus current supply circuit of more power supplys include the first power supply buses, the second power supply buses, the first common power supply branch
Road, the second common power branch, the first backup power source branch, the second backup power source branch and load branch circuit；First power supply
Bus is connect by block switch with the second power supply buses；First power supply buses connect the first common power supply through first switch
The output end of branch；First power supply buses connect the output end of the first backup power source branch through second switch；Described first
The connection of the input terminal of power supply buses and load branch circuit, the output end of load branch circuit are connect with electrical equipment；Described second for the goddess of lightning
Line switchs the output end of the second common power branch of connection through third；Second power supply buses are standby through the 4th switch connection second
With the output end of power branch；Wherein, the input terminal of the input terminal of the first common power branch and the second common power branch connects
It is connected to same higher level's bus；The input terminal of the input terminal of first backup power source branch and the second backup power source branch is connected to difference
Higher level's bus, and the higher level that is connected to of the input terminal of the input terminal of the first backup power source branch and the second backup power source branch is female
Line is different from higher level's bus that the input terminal of the first common power branch connects；The method, comprising:
Initialize the spare investment priority of the first backup power source branch and the second backup power source branch；
Detect the voltage of the first power supply buses, the voltage of the second power supply buses, the voltage of the first backup power source branch, second
The voltage of backup power source branch, the electric current of the first backup power source branch, the electric current of the second backup power source branch, the first common power supply
The electric current of the electric current of branch and the second common power supply；
When block switch is closed, first switch or third are closed the switch, when second switch and the 4th switch disconnect, judgement
First power supply buses and the second power supply buses whether decompression, if so, continuing to judge the first common power branch or second common
Power branch whether decompression, if the first common power branch or the second common power branch decompression, tripping first switch and
Three switches are opened according to what the spare investment priority of initialization closed that the higher backup power source branch of priority connect with bus
It closes；
When block switch is closed, first switch and third switch are disconnected, and the 4th closes the switch, and when second switch disconnects, sentences
Disconnected first power supply buses and the second power supply buses whether decompression；If so, continue to judge the second backup power source branch whether decompression,
If so, tripping the 4th switchs, second switch is closed；
When block switch is closed, first switch and third switch are disconnected, and second switch closure is sentenced when the 4th switch disconnects
Disconnected first power supply buses and the second power supply buses whether decompression；If so, judge the first backup power source branch whether decompression, if
It is, then tripping second switch to close the 4th switch.
Further, when the switch of tripping the 4th, second switch is closed, the three-phase electricity of the second backup power source branch is continued to test
Stream, the logic criterion as prepared auto restart charge and discharge and movement.
When tripping second switch, the 4th switch is closed, the three-phase current of the first backup power source branch is continued to test, as standby
From the logic criterion for throwing charge and discharge and movement.
Further, it is described judge the first power supply buses and the second power supply buses whether decompression, specifically include:
The voltage of the first power supply buses of real-time detection and the voltage of the second power supply buses, judge the first power supply buses respectively
Whether the voltage of voltage and the second power supply buses is less than bus loss of pressure threshold value, if so, determining that the first power supply buses and second supply
Electric bus loss of pressure, if it is not, then determining the first power supply buses and the second power supply buses are non-decompressions.
Further, it is described judge the first backup power source branch whether decompression, specifically include: the first backup power source of real-time detection
The voltage of branch, judges whether the voltage of the first backup power source branch is less than power supply decompression threshold value, if so, determining that first is spare
Power supply decompression, if it is not, the then non-decompression of the first backup power source；
It is described judge the second backup power source branch whether decompression, specifically include: real-time detection the second backup power source branch
Voltage, judges whether the voltage of the second backup power source branch is less than power supply decompression threshold value, if so, determining that the second backup power source loses
Pressure, if it is not, the then non-decompression of the second backup power source.
Further, the voltage of the voltage of the first power supply buses of real-time detection and the second power supply buses judges the first confession respectively
Whether the voltage of the voltage of goddess of lightning's line and the second power supply buses is less than bus loss of pressure threshold value, if so, determining the first power supply buses
With the second power supply buses whether decompression, it is specific to wrap if it is not, then determine the first power supply buses and the second power supply buses are non-decompressions
Include: the voltage of the first power supply buses of real-time detection and the three-phase voltage of the second power supply buses judge the first power supply buses respectively
Whether the three-phase voltage of voltage and the second power supply buses is less than bus loss of pressure threshold value, if whether a bus at least phase voltage is small
In bus loss of pressure threshold value, then the first power supply buses and the second power supply buses decompression are determined, if the three-phase voltage of the bus is not small
In bus loss of pressure threshold value, then the first power supply buses and the non-decompression of the second power supply buses are determined.
Further, the voltage of the first backup power source of real-time detection branch, judges the voltage of the first backup power source branch
Whether power supply decompression threshold value is less than, if so, the first backup power source decompression is determined, if it is not, the then non-decompression of the first backup power source, tool
Body includes: a phase voltage of real-time detection the first backup power source branch, judge the first backup power source branch a phase voltage whether
Less than power supply decompression threshold value, if so, the first backup power source decompression is determined, if it is not, the then non-decompression of the first backup power source；
The voltage of real-time detection the second backup power source branch, judges whether the voltage of the second backup power source branch is less than power supply
Decompression threshold value, if so, the second backup power source decompression is determined, if it is not, the then non-decompression of the second backup power source, specifically includes: in real time
The phase voltage for detecting the second backup power source branch, judges whether a phase voltage of the second backup power source branch is less than power supply decompression
Threshold value, if so, the second backup power source decompression is determined, if it is not, the then non-decompression of the second backup power source.
Beneficial effects of the present invention: the present invention first finds the power branch for causing bus loss of pressure after two bus loss of pressure,
Then it is switched to corresponding backup power source branch again, the mistake for first detecting backup power source branch is needed before cut-in stand-by power branch
Situation is pressed, in order to avoid by the in-put of spare power supply of failure or decompression into power supply buses, is delayed to industrial park or industrial enterprise
Power supply, reliable and stable standby electric power automatic throwing method can be provided for the high-tension apparatus current supply circuit of more power supplys, meets work
Industry garden or the continuous power reguirements of industrial enterprise.
Detailed description of the invention
The invention will be further described with reference to the accompanying drawings and examples:
Fig. 1 is the high-tension apparatus current supply circuit schematic diagram for more power supplys that the present invention applies.
Specific embodiment
As shown in Figure 1, a kind of more power backup power supplys provided by the invention automatically engage method, the height applied to more power supplys
Equipment current supply circuit is pressed, the high-tension apparatus current supply circuit of more power supplys includes the first power supply buses, the second power supply buses, first
Common power branch, the second common power branch, the first backup power source branch, the second backup power source branch and load branch circuit；Institute
The first power supply buses are stated to connect by block switch with the second power supply buses；First power supply buses are through first switch connection the
The output end of one common power branch；First power supply buses connect the output of the first backup power source branch through second switch
End；The connection of the input terminal of first power supply buses and load branch circuit, the output end of load branch circuit are connect with electrical equipment；It is described
Second power supply buses switch the output end of the second common power branch of connection through third；Second power supply buses are through the 4th switch
Connect the output end of the second backup power source branch；Wherein, the input terminal of the first common power branch and the second common power branch
Input terminal be connected to same higher level's bus；The input terminal of the input terminal of first backup power source branch and the second backup power source branch
It is connected to different higher level's buses, and the input terminal of the input terminal of the first backup power source branch and the second backup power source branch connects
The higher level's bus arrived is different from higher level's bus that the input terminal of the first common power branch connects；In Fig. 1,1 indicates that first is common
Power branch, 2 the first backup power source branches of expression, 3 the second common power branch of expression, 4 the second backup power source branches of expression, 5
Indicate load branch circuit, 6 indicate the first power supply buses, and 7 indicate the second power supply buses.In the present embodiment, the high-tension apparatus of more power supplys
Current supply circuit is the high-tension apparatus current supply circuit of more power supplys of 110KV.The method, comprising:
Initialize the spare investment priority of the first backup power source branch and the second backup power source branch；In the present embodiment,
Since load branch circuit is connect with the first power supply buses, the first backup power source branch is connect with the first power supply buses, and first for the goddess of lightning
Line is connect by block switch with the second power supply buses, and the second backup power source branch is connect with the second power supply buses, with load branch
Road is connected similarly to confession of the electrical stability compared with the second backup power source branch of the first backup power source branch of the first power supply buses
Electrical stability is higher, therefore the priority for defaulting the first backup power source branch is set above the preferential of the second backup power source branch
Grade, that is, the priority for initializing the first backup power source branch are higher than the priority of the second backup power source branch.But in practical behaviour
In work, for flexible operating, " preferentially closing second switch " pressing plate investment will be characterized in backup auto-activating device, it is standby can to initialize second
It is higher than the priority of the first backup power source branch with the priority of power branch.The first switch, second switch, third are opened
Pass, the 4th switch are and block switch can be high-voltage circuitbreaker, control it by small power supply control loop and cut-off.The small power supply
By the following method, control first switch, second switch, third switch, the 4th switch equal and block switch open to control loop
It is disconnected.
Detect the voltage of the first power supply buses, the voltage of the second power supply buses, the voltage of the first backup power source branch, second
The voltage of backup power source branch, the electric current of the first backup power source branch, the electric current of the second backup power source branch, the first common power supply
The electric current of the electric current of branch and the second common power supply；
When block switch is closed, first switch or third are closed the switch, when the 4th closes the switch, second switch disconnects,
Wherein, first switch or third close the switch, and there are three types of forms: (1) first switch is closed, and third switch disconnects, by first
Common power branch is power supply for electrical equipment；(2) first switch disconnects, and third closes the switch, and by the, common power branch is
Power supply for electrical equipment；(3) first switch is closed, and third closes the switch, by the first common power branch and the second common power supply branch
Road is simultaneously power supply for electrical equipment；Judge the first power supply buses and the second power supply buses whether decompression, if so, if first for the goddess of lightning
Line and the second power supply buses decompression, then judge the first common power branch or the second common power branch whether decompression, specifically,
When the first common power branch be power supply for electrical equipment when, judge the first common power supply whether decompression；When the second common power supply branch
Road be power supply for electrical equipment when, judge the second common power branch whether decompression；When the first common power branch and second are commonly used
Power branch is simultaneously power supply for electrical equipment, judge the first common power branch and the second common power branch whether decompression (because
For block switch closure, the first power supply buses and the second power supply buses are connected, therefore judge the first common power branch and second often
With branch decompression any in power branch, then another common power branch also decompression).If the first common power branch or second
Common power branch decompression, including three kinds of situations: (1) when first common power branch be power supply for electrical equipment, if it is determined that the
One common power branch decompression；(2) when the second common power branch is power supply for electrical equipment, if it is determined that the second common power supply branch
Road decompression；(3) when the first common power branch and the second common power branch are simultaneously power supply for electrical equipment, if it is determined that first
Common power branch and the second common any common power branch decompression of power branch；Then tripping first switch and third switch,
The switch that the higher backup power source branch of priority is connect with bus is closed according to the spare investment priority of initialization；According to first
The spare investment priority of beginningization is chosen one of branch in the first backup power source branch and the second backup power source branch and is made
For the backup power source branch (the high conduct backup power source of priority) of the high-tension apparatus current supply circuit of more power supplys.Further, it is pressing
After selecting backup power source branch according to the spare investment priority according to initialization, the backup power source branch selected should be first detected
Whether decompression, if decompression, using remaining backup power source branch as the backup power source branch of high-tension apparatus current supply circuit.Example
Such as: the priority of the second backup power source branch is higher than the priority of the first backup power source branch, then in investment high-tension apparatus power supply
Before the backup power source branch in circuit, the voltage of the second backup power source branch is first detected, if non-decompression, by the second backup power source
Branch puts into current supply circuit as the backup power source branch of high-tension apparatus current supply circuit, i.e., closes the switch the 4th, if decompression,
Current supply circuit is put into using the first backup power source branch as the backup power source branch of high-tension apparatus current supply circuit, i.e., by second switch
Closure.Since the input terminal of the first backup power source branch and the input terminal of second source branch are connected to different higher level's buses,
Typically, it is different higher level's buses is connected to according to nearby principle, in actual operation, different higher level's bus settings
Parameters can have difference always, therefore in the case where block switch closure, the first backup power source branch and the second standby electricity
Source branch is different to be connected respectively in the first power supply buses and the second power supply buses simultaneously, i.e. second switch and the 4th switch cannot
It is closed at.In operation second switch and when cut-offfing of the 4th switch, it need to even switch to second switch and the 4th switch is corresponding small
Power control loop.In addition, more power backup power supplys, which automatically engage method also, can have TV breakage lock device function, bus TV mono-
When phase, two-phase or three-phase break, BZT not malfunction or tripping；Have acceleration function after inlet wire overcurrent, is closed after prepared auto restart movement
When failure, device can accelerate tripping to inductive switch according to the electric current of the first backup power source branch or the second backup power source branch,
To cut failure, equipment and system operation are protected, which (can only adjust) within some time after BZT movement and work；
After prepared auto restart movement, consider that connection cuts small power supply and reclosing electric discharge；Also to be capable of providing detailed switching value, switching value displacement and
The wave-record chart of protection act is conducive to crash analysis etc..
When block switch is closed, first switch and third switch are disconnected, and the 4th closes the switch, when second switch disconnects, this
When by the second backup power source branch power, standby electricity of the first backup power source branch as the high-tension apparatus current supply circuit of more power supplys
Source；Judge the first power supply buses and the second power supply buses whether decompression；If so, judging whether the second backup power source branch loses
Pressure is jumped if so, determining is the first power supply buses as caused by the second backup power source branch decompression and the second power supply buses decompression
The 4th switch is opened, that is, disconnects the second backup power source branch, closes second switch, the first backup power source branch is put into current supply circuit
In；
When block switch is closed, first switch and third switch are disconnected, second switch closure, when the 4th switch disconnects, this
When by the first backup power source branch power, standby electricity of the second backup power source branch as the high-tension apparatus current supply circuit of more power supplys
Source；Judge the first power supply buses and the second power supply buses whether decompression；If so, judging whether the first backup power source branch loses
Pressure is jumped if so, determining is the first power supply buses as caused by the first backup power source branch decompression and the second power supply buses decompression
Second switch is opened, that is, disconnects the second backup power source branch, closes the 4th switch, the second backup power source branch is put into current supply circuit
In.By the above method, after two bus loss of pressure, the power branch for causing bus loss of pressure is first found, is then switched to phase again
The backup power source branch answered needs the decompression situation for first detecting backup power source branch before cut-in stand-by power branch, in order to avoid will
The in-put of spare power supply of failure or decompression is delayed the power supply to industrial park or industrial enterprise into power supply buses, can be more
The high-tension apparatus current supply circuit of power supply provides reliable and stable standby electric power automatic throwing method, meets industrial park or industry enterprise
The continuous power reguirements of industry.
Further, when the switch of tripping the 4th, second switch is closed, the three-phase electricity of the second backup power source branch is continued to test
Stream, the logic criterion as prepared auto restart charge and discharge and movement.
When tripping second switch, the 4th switch is closed, the three-phase current of the first backup power source branch is continued to test, as standby
From the logic criterion for throwing charge and discharge and movement.First determine whether that the prepared auto restart power branch is before putting into prepared auto restart power branch
It is no in operation, i.e., by judging whether decompression is determined the prepared auto restart power branch.When backup power source branch investment is mostly electric
After the high-tension apparatus current supply circuit in source, the three-phase current of backup power source branch, which is used as, accelerates remaining each opening amount together in failure, mainly
The criterion of logic as backup auto-activating device charge and discharge and movement, particular use are shown in following logic:
One, the first backup power source branch, the second backup power source branch are for the first common power branch, the second common power supply branch
Road logic charge and discharge electric condition
1.1 charge condition
(1) prepared auto restart is devoted oneself to work；(2) first power supply buses, the second power supply buses meet press strip part；(3) it is segmented
Switch coincidence and the position after closing；(4) first common power branch, the second common power branch only have a route running
(after coincidence and conjunction), another in maintenance or tripping state；(5) first backup power source branches, the second backup power source branch are at least
There is a switch jumping position, when sentencing siding has pressure definite value investment, corresponding line has pressure；Without locking prepared auto restart input；(6) discharge off
Condition.
1.2 charge condition
(1) prepared auto restart exits work；It disappears after (2) first common power branch, the second common power branch, or segmentation
It disappears after conjunction；(3) first common power branch, the second common power branch are in (4) first backup power source branch of operating status
Road, the second backup power source branch switch close；(5) when sentencing siding has pressure definite value investment, siding is unsatisfactory for for a long time
There is press strip part；(6) there is locking prepared auto restart input；(7) working line is refused to jump or extension wire is refused to close.
Two, the first backup power source branch, the second backup power source branch are for the first common power branch, the second common power supply branch
Road action logic
After prepared auto restart charging complete
After first power supply buses, the second power supply buses meet without press strip part, the first backup power source branch or the second standby electricity
Source branch has pressure (if inspection extension wire has press strip part not throw, then not examined pressure) jumping position and route, the first backup power source branch,
Second backup power source branch jumps the first backup power source branch, second backup power source branch (such as the first standby electricity through delay without stream
Source branch, the second backup power source branch have maintenance pressing plate to open into not jumping line related then)；
Confirm that the first backup power source branch, the second backup power source branch tripping are (such as the first backup power source branch, second spare
Power branch has maintenance pressing plate to open, and does not sentence line related tripping) after, extension wire is closed through delay；
Close extension wire logic:
If the first backup power source branch is jumping position and having pressure, the second backup power source branch is unsatisfactory for jumping position and having pressure, then
Close the first backup power source branch switch (second switch)；
If the second backup power source branch is jumping position and having pressure, the first backup power source branch is unsatisfactory for jumping position and having pressure, then
Close the second backup power source branch switch (the 4th switch)；
If the first backup power source branch, the second backup power source branch switch are jumping position and having pressure, then it is spare only to close first
Power branch switchs (second switch)；As the preferential second backup power source branch pressing plate that closes is opened into then only closing the second backup power source
Branch switch (the 4th switch)；
Three, the action logic of the first backup power source branch, the second backup power source branch
After prepared auto restart charging complete:
After first power supply buses, the second power supply buses meet without press strip part, the first backup power source branch has pressure (such as to examine spare
Route has press strip part not throw, then has not examined pressure), the second backup power source branch jumps the second backup power source branch without stream, through delay；
After confirming the second backup power source branch tripping, the first backup power source branch (second switch) is closed through delay.
Further, it is described judge the first power supply buses and the second power supply buses whether decompression, specifically include:
The voltage of the first power supply buses of real-time detection and the voltage of the second power supply buses, judge the first power supply buses respectively
Whether the voltage of voltage and the second power supply buses is less than bus loss of pressure threshold value, if so, determining that the first power supply buses and second supply
Electric bus loss of pressure, if it is not, then determining the first power supply buses and the second power supply buses are non-decompressions.It should be noted that bus loss of pressure
Threshold value is set according to actual conditions, and can be the 98% of bus voltage rating without restriction, such as bus loss of pressure threshold value here.
By taking the first power supply buses of 110KV grade and the second power supply buses as an example, when the voltage of the first power supply buses detected and
The voltage of two power supply buses is less than the 98% of specified 110KV, that is, can determine whether the first power supply buses and the second power supply buses decompression,
It can not normal power supply.
Further, it is described judge the first backup power source branch whether decompression, specifically include: the first backup power source of real-time detection
The voltage of branch, judges whether the voltage of the first backup power source branch is less than power supply decompression threshold value, if so, determining that first is spare
Power supply decompression, if it is not, the then non-decompression of the first backup power source；
It is described judge the second backup power source branch whether decompression, specifically include: real-time detection the second backup power source branch
Voltage, judges whether the voltage of the second backup power source branch is less than power supply decompression threshold value, if so, determining that the second backup power source loses
Pressure, if it is not, the then non-decompression of the second backup power source.Judge whether decompression can determine whether that the backup power source branch is to backup power source branch
No normal operation, the backup power source branch only operated normally can put into common power supply, by judging backup power source branch in advance
Whether normal operation, the backup power source branch for avoiding not running is cut the high-tension apparatus current supply circuits of more power supplys and is caused in power supply
It is disconnected, it ensure that the continuity of the high-tension apparatus current supply circuit power supply of more power supplys.
Further, the voltage of the voltage of the first power supply buses of real-time detection and the second power supply buses judges the first confession respectively
Whether the voltage of the voltage of goddess of lightning's line and the second power supply buses is less than bus loss of pressure threshold value, if so, determining the first power supply buses
With the second power supply buses whether decompression, it is specific to wrap if it is not, then determine the first power supply buses and the second power supply buses are non-decompressions
Include: the voltage of the first power supply buses of real-time detection and the three-phase voltage of the second power supply buses judge the first power supply buses respectively
Whether the three-phase voltage of voltage and the second power supply buses is less than bus loss of pressure threshold value, if whether a bus at least phase voltage is small
In bus loss of pressure threshold value, then the first power supply buses and the second power supply buses decompression are determined, if the three-phase voltage of the bus is not small
In bus loss of pressure threshold value, then the first power supply buses and the non-decompression of the second power supply buses are determined.Judge that bus loss of pressure need to judge bus
Three-phase voltage whether decompression, rather than single one phase voltage decompression of judgement bus, this ensure that can accurately judge bus
Decompression is conducive to the failure of discovery bus, also corresponding counter-measure is unfolded.
Further, the voltage of the first backup power source of real-time detection branch, judges the voltage of the first backup power source branch
Whether power supply decompression threshold value is less than, if so, the first backup power source decompression is determined, if it is not, the then non-decompression of the first backup power source, tool
Body includes: a phase voltage of real-time detection the first backup power source branch, judge the first backup power source branch a phase voltage whether
Less than power supply decompression threshold value, if so, the first backup power source decompression is determined, if it is not, the then non-decompression of the first backup power source；
The voltage of real-time detection the second backup power source branch, judges whether the voltage of the second backup power source branch is less than power supply
Decompression threshold value, if so, the second backup power source decompression is determined, if it is not, the then non-decompression of the second backup power source, specifically includes: in real time
The phase voltage for detecting the second backup power source branch, judges whether a phase voltage of the second backup power source branch is less than power supply decompression
Threshold value, if so, the second backup power source decompression is determined, if it is not, the then non-decompression of the second backup power source.Judge that backup power source branch loses
Pressure is guaranteeing to judge the standard whether backup power source branch has so only with the phase voltage decompression for judging backup power source branch
Exactness can carry out prepared auto restart operation in time, guarantee the continued power of the high-tension apparatus current supply circuit of more power supplys.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the scope of the claims of invention.
Claims (6)
1. a kind of more power backup power supplys automatically engage method, it is characterised in that: the high-tension apparatus applied to more power supplys is powered back
Road, the high-tension apparatus current supply circuit of more power supplys include the first power supply buses, the second power supply buses, the first common power supply branch
Road, the second common power branch, the first backup power source branch, the second backup power source branch and load branch circuit；First power supply
Bus is connect by block switch with the second power supply buses；First power supply buses connect the first common power supply through first switch
The output end of branch；First power supply buses connect the output end of the first backup power source branch through second switch；Described first
The connection of the input terminal of power supply buses and load branch circuit, the output end of load branch circuit are connect with electrical equipment；Described second for the goddess of lightning
Line switchs the output end of the second common power branch of connection through third；Second power supply buses are standby through the 4th switch connection second
With the output end of power branch；Wherein, the input terminal of the input terminal of the first common power branch and the second common power branch connects
It is connected to same higher level's bus；The input terminal of the input terminal of first backup power source branch and the second backup power source branch is connected to difference
Higher level's bus, and the higher level that is connected to of the input terminal of the input terminal of the first backup power source branch and the second backup power source branch is female
Line is different from higher level's bus that the input terminal of the first common power branch connects；The method, comprising:
Initialize the spare investment priority of the first backup power source branch and the second backup power source branch；
Detect the voltage of the first power supply buses, voltage of the second power supply buses, the voltage of the first backup power source branch, second spare
The voltage of power branch, the electric current of the first backup power source branch, the electric current of the second backup power source branch, the first common power branch
Electric current and the second common power supply electric current；
When block switch is closed, first switch or third are closed the switch, and when second switch and the 4th switch disconnect, judge first
Power supply buses and the second power supply buses whether decompression, if so, continuing to judge the first common power branch or the second common power supply
Branch whether decompression, if the first common power branch or the second common power branch decompression, tripping first switch and third are opened
It closes, the switch that the higher backup power source branch of priority is connect with bus is closed according to the spare investment priority of initialization；
When block switch is closed, first switch and third switch are disconnected, and the 4th closes the switch, and when second switch disconnects, judge the
One power supply buses and the second power supply buses whether decompression；If so, continue to judge the second backup power source branch whether decompression, if
It is that then tripping the 4th switchs, closes second switch；
When block switch is closed, first switch and third switch are disconnected, and second switch closure judges the when the 4th switch disconnects
One power supply buses and the second power supply buses whether decompression；If so, judge the first backup power source branch whether decompression, if so,
Tripping second switch closes the 4th switch.
2. more power backup power supplys automatically engage method according to claim 1, it is characterised in that: when tripping the 4th switch,
Second switch is closed, the three-phase current of the second backup power source branch, the logic as prepared auto restart charge and discharge and movement are continued to test
Criterion.
When tripping second switch, the 4th switch is closed, the three-phase current of the first backup power source branch is continued to test, as prepared auto restart
The logic criterion of charge and discharge and movement.
3. more power backup power supplys automatically engage method according to claim 1, it is characterised in that: first power supply of judgement
Bus and the second power supply buses whether decompression, specifically include:
The voltage of the first power supply buses of real-time detection and the voltage of the second power supply buses, judge the voltage of the first power supply buses respectively
Whether it is less than bus loss of pressure threshold value with the voltage of the second power supply buses, if so, determining the first power supply buses and second for the goddess of lightning
Line decompression, if it is not, then determining the first power supply buses and the second power supply buses are non-decompressions.
4. more power backup power supplys automatically engage method according to claim 1, it is characterised in that: the judgement first is spare
Power branch whether decompression, specifically include: the voltage of real-time detection the first backup power source branch judges the first backup power source branch
Voltage whether be less than power supply decompression threshold value, if so, the first backup power source decompression is determined, if it is not, then the first backup power source is not
Decompression；
It is described judge the second backup power source branch whether decompression, specifically include: the voltage of real-time detection the second backup power source branch,
Judge whether the voltage of the second backup power source branch is less than power supply decompression threshold value, if so, determine the second backup power source decompression, if
It is no, then the non-decompression of the second backup power source.
5. more power backup power supplys automatically engage method according to claim 3, it is characterised in that: real-time detection first is powered
The voltage of the voltage of bus and the second power supply buses judges the voltage of the first power supply buses and the voltage of the second power supply buses respectively
Whether be less than bus loss of pressure threshold value, if so, determine the first power supply buses and the second power supply buses whether decompression, if it is not, then sentencing
Fixed first power supply buses and the second power supply buses are non-decompressions, are specifically included: the voltage of the first power supply buses of real-time detection and the
Whether the three-phase voltage of the three-phase voltage of two power supply buses, the voltage and the second power supply buses that judge the first power supply buses respectively is small
In bus loss of pressure threshold value, if whether a bus at least phase voltage is less than bus loss of pressure threshold value, the first power supply buses are determined
The first power supply buses are determined if the three-phase voltage of the bus is not less than bus loss of pressure threshold value with the second power supply buses decompression
With the non-decompression of the second power supply buses.
6. more power backup power supplys automatically engage method according to claim 4, it is characterised in that: the real-time detection first
The voltage of backup power source branch, judges whether the voltage of the first backup power source branch is less than power supply decompression threshold value, if so, determining
First backup power source decompression, if it is not, the then non-decompression of the first backup power source, specifically includes: real-time detection the first backup power source branch
A phase voltage, judge a phase voltage of the first backup power source branch whether be less than power supply decompression threshold value, if so, determine first
Backup power source decompression, if it is not, the then non-decompression of the first backup power source；
The voltage of real-time detection the second backup power source branch, judges whether the voltage of the second backup power source branch is less than power supply decompression
Threshold value, if so, the second backup power source decompression is determined, if it is not, the then non-decompression of the second backup power source, specifically includes: real-time detection
One phase voltage of the second backup power source branch, judges whether a phase voltage of the second backup power source branch is less than power supply decompression threshold
Value, if so, the second backup power source decompression is determined, if it is not, the then non-decompression of the second backup power source.
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| CN201910632128.2A CN110247471A (en) | 2019-07-12 | 2019-07-12 | More power backup power supplys automatically engage method |
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| CN103595120A (en) * | 2013-11-21 | 2014-02-19 | 长园深瑞继保自动化有限公司 | Multi-incoming-line standby power supply automatic switching-in method |
| US20180041046A1 (en) * | 2016-08-04 | 2018-02-08 | National Chung Shan Institute Of Science And Technology | Multi-power supply device |
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| CN1988322A (en) * | 2006-11-24 | 2007-06-27 | 北海银河高科技产业股份有限公司 | Device for automatic put-in spair power source |
| CN102621417A (en) * | 2012-03-26 | 2012-08-01 | 中铁八局集团电务工程有限公司 | Method for testing automatic throw-in equipment of emergency power supply |
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