CN107370235B - Based on the adaptive region spare power automatic switching system and method under composite power supply mode - Google Patents
Based on the adaptive region spare power automatic switching system and method under composite power supply mode Download PDFInfo
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- CN107370235B CN107370235B CN201710551037.7A CN201710551037A CN107370235B CN 107370235 B CN107370235 B CN 107370235B CN 201710551037 A CN201710551037 A CN 201710551037A CN 107370235 B CN107370235 B CN 107370235B
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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
- H02J9/02—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which an auxiliary distribution system and its associated lamps are brought into service
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
Abstract
The invention discloses the adaptive region spare power automatic switching systems and method under a kind of mode based on composite power supply, it is capable of the method for operation of the current compound power grid of automatic identification, pass through the analog quantity and protection signal of substation where acquiring backup auto-activating device in real time, carry out accident analysis positioning, optimal power supply switching strategy is provided with standby throw of wide area in combination with standby throw on the spot, quickly output electrical control order isolated fault, and protection control is carried out to power grid, system response speed is fast, improve power supply reliability, improve power supply quality, promote operation of power networks efficiency, and then improve the reliability of power grid, shorten power off time caused by failure, structural security risk is excluded from source, realize the condition that composite power supply system automatically switches, power grid power supply reliability is set to reach advanced world standards, it has a good application prospect.
Description
Technical field
The present invention relates to power system power supply reliability consideration technical fields, and in particular to one kind is based on composite power supply mode
Under adaptive region spare power automatic switching system and method.
Background technique
With China's west-to-east power transmission and on national network strategy implementation, electric power safety with electric power networks scale increasingly
Expansion is closely linked with people's lives and social stability.The thing of the economy as caused by power grid accident and politics
Part is also commonplace at home and abroad.Currently, power grid security has increased to national security problem.Because Automation of Electric Systems is advised
Mould is gradually expanded, and a large amount of looped network and short-term road occurs, and the control protection of smart grid and safe distribution of electric power operation are brought
Great challenge.
In case throwing the inexorable trend that the intelligent distribution network that control is characterized is the following power distribution network development.For power grid accident
Complexity and variability need to study a kind of adaptive region spare power automatic switching system of classification, the operation of automatic identification current electric grid
Mode, and multiple spot comprehensive comparison is carried out using real-time network communication, for large-scale complex accident, realize quick, sensitive event
Barrier positioning and failure removal, provide recovery policy and are converted to electrical command, be issued to specific spare power automatic switching system executive device,
Restore power grid power supply, is current urgent problem.
Summary of the invention
The purpose of the present invention is overcoming the complexity and variability that are directed to power grid accident in the prior art, do not propose feasible
Standby throwing control system the problem of.It is of the invention based on the adaptive region spare power automatic switching system and method under composite power supply mode,
Be capable of the method for operation of the current compound power grid of automatic identification, by the analog quantity of substation where acquiring backup auto-activating device in real time and
Protection signal carries out accident analysis positioning, provides optimal power supply switching plan with standby throw of wide area in combination with standby throw on the spot
Slightly, electrical control order isolated fault is quickly exported, and protection control is carried out to power grid, and then realize the standby throwing of electric system,
Shorten the power off time of electric network fault, improves power supply quality, have a good application prospect.
In order to achieve the above object, the technical scheme adopted by the invention is that:
A kind of adaptive region spare power automatic switching system under the mode based on composite power supply is applied in double mother partitions band bypass connections
Composite power supply mode under, including N number of spare power automatic switching system device, select wherein any one spare power automatic switching system device as it is standby from
Central station equipment is thrown, each spare power automatic switching system device is provided with analog acquisition interface, intake acquisition interface and the amount of outputing output
Interface；
Double mother partitions are connected separately with a spare power automatic switching system dress with each statements based on collusion station under bypass connection composite power supply mode
It sets；
The analog acquisition interface of the spare power automatic switching system device, for being responsible for the line voltage distribution and route at corresponding statements based on collusion station
The acquisition of current-mode analog quantity, and busbar voltage is calculated according to collection capacity, and be converted into corresponding electrical quantity status signal, it above send to standby
From throwing central station equipment；
The intake acquisition interface of the spare power automatic switching system device, electrical quantity status signal for being responsible for receiving and is opened
Signal is measured in pass, and carries out fault location, automatic to determine wide area and on the spot prepared auto restart movement priority, and is filled by prepared auto restart master station
It sets and sends electrical control order to corresponding backup auto-activating device；
The amount of the outputing output interface of the spare power automatic switching system device receives the transmission of prepared auto restart central station equipment for being responsible for
Electrical control order is completed to realize power switching to the electrical control at corresponding statements based on collusion station.
Adaptive region spare power automatic switching system under the mode above-mentioned based on composite power supply, double mother partition band bypass connections
Composite power supply mode under power grid, including single double-bus power station, single independent electrical source station, multiple statements based on collusion station, it is described more
A statements based on collusion station forms ring connection, and the single independent electrical source station is that the statements based on collusion station of inside powers, under normal operation mode, open loop
Point is the block switch at two sides statements based on collusion station, and remaining statements based on collusion station is coincidence；Under non-normal operation mode, single independent electrical source station
Out of service, statements based on collusion station forms annular formula wiring hand in hand, and the statements based on collusion station is stood for single mother partition statements based on collusion.
Adaptive region spare power automatic switching system under the mode above-mentioned based on composite power supply is sent to standby on the backup auto-activating device
There are pressure passive state signal, No.1 inlet wire and No. two inlet wires from the electrical quantity status signal for throwing central station equipment, including mother I and mother II
There are pressure passive state signal, No.1 inlet wire and No. two inlet wires to have stream without stream mode signal, inlet wire fault current status signal, inlet wire
Fault current direction status signal, inlet wire failure zero-sequence current status signal and inlet wire fault negative sequence current status signal.
Adaptive region spare power automatic switching system under the mode above-mentioned based on composite power supply, the prepared auto restart central station equipment are sent
Electrical control order, including prepared auto restart allows order, jumping circuit switch command and zygonema way switch order on the spot.
Adaptive region spare power automatic switching system under the mode above-mentioned based on composite power supply, it is characterised in that: N number of prepared auto restart dress
It is connected between setting by single mode optical fiber, and carries out real-time data communication in a manner of GOOSE message.
Adaptive region spare power automatic switching system under the mode above-mentioned based on composite power supply, the throwing of the prepared auto restart central station equipment
It moves back and is completed by the setting operation to control word.
A kind of adaptive region spare power automatic switching method under the mode based on composite power supply is above-mentioned based on composite power supply mode
Under adaptive region spare power automatic switching system control method, including composite power supply power grid operate normally control model, composite power supply
Power grid abnormal running control model, process are as follows:
Under composite power supply power grid normal operation mode, the recharge logic of each backup auto-activating device is that prepared auto restart charging is patrolled on the spot
Volume, each backup auto-activating device judges that it connects whether corresponding statements based on collusion station is in normal inlet wire or bridge for throwing mode, if meeting it
Middle one mode, then spare power automatic switching system investment carries out prepared auto restart charging on the spot on the spot, and carries out the mode simultaneously and charge to charging
It completes；
If each backup auto-activating device meets prepared auto restart electric discharge logical condition on the spot, on the spot the electric discharge of prepared auto restart investment；
Under composite power supply power grid abnormal running control model, the recharge logic of each backup auto-activating device is that wide area prepared auto restart fills
Electric logic, each backup auto-activating device judge that it connects the annular that corresponding statements based on collusion station is formed and hands in hand in wiring, if only one
The switch at statements based on collusion station in quartile, simultaneously remaining statements based on collusion station switch all in coincidence and two sections of main power supply station bus have pressure,
All statements based on collusion station bus has that pressure, there is no other discharging conditions that it is wide to control each backup auto-activating device if above-mentioned condition meets simultaneously
Domain prepared auto restart, and switch stand corresponding backup auto-activating device in quartile statements based on collusion for prepared auto restart on the spot is carried out, and are somebody's turn to do simultaneously
Mode charges to charging complete；If each backup auto-activating device meets wide area prepared auto restart electric discharge logical condition, the electric discharge of wide area prepared auto restart.
Adaptive region spare power automatic switching method under the mode above-mentioned based on composite power supply, it is characterised in that: described standby on the spot
From electric logical condition is launched, meet one of the following conditions, specially (1) region spare power automatic switching system is not put into；(2) spare to open
Pass, which is not at, jumps position；(3) incoming switch is manually disconnected；(4) switch is refused to jump or refuse to close in action process；(5) prepared auto restart on the spot
It acts successfully.
Adaptive region spare power automatic switching method under the mode above-mentioned based on composite power supply, it is characterised in that: the wide area is standby
From electric logical condition is launched, meet one of the following conditions, specially (1) region spare power automatic switching system is not put into；(2) open loop point
Switch coincidence；(3) backup auto-activating device where open loop point receives abnormal；(4) main website receives logical when any backup auto-activating device information
Letter is abnormal；(5) two sections of main power supply station bus is without pressure；(6) either switch malposition；(7) any statements based on collusion switch is manually jumped
It opens；(8) statements based on collusion switch is refused to jump；(9) certain route at statements based on collusion station throws maintenance；(10) open loop point two sides failure；(11) where open loop point
Power station bus-bar fault；(12) open loop point opposite side power station bus-bar fault；(13) line fault where open loop point；(14) where open loop point
Route opposite side switchs jump；(15) it is confirmed after system acting；(16) wide area prepared auto restart feed motion.
Adaptive region spare power automatic switching method under the mode above-mentioned based on composite power supply, after charging complete, each prepared auto restart
Device determines operational mode automatically, if the following conditions are met for the moment: (1) non-open loop point switch jumps position without stream；(2) power station is female
Line is without pressure and outlet is without stream；(3) there is bus differential protection action；(4) there is the movement of route optical-fiber longitudinal difference protection；(5) string where open loop point
For station or its opposite side statements based on collusion station are without pressure and inlet wire is without stream, then region spare power automatic switching system starts, and carries out fault location, and tripping is waited to prolong
Shi Hou executes the trip signal of isolated fault, when the former main power supply station switch at confirmation close to fault point power loss station jumps position, route
Without stream and after bus is without pressure, the line switching of former open loop point is closed, restores to act in collusion to make each other's confessions to power loss by the independent electrical source station of the other side and stand
Power supply, realize power switching.
The beneficial effects of the present invention are: adaptive region spare power automatic switching system under the mode of the invention based on composite power supply and
Method is capable of the method for operation of the current compound power grid of automatic identification, passes through the mould of substation where acquiring backup auto-activating device in real time
Analog quantity and protection signal carry out accident analysis positioning, provide optimal power supply with standby throw of wide area in combination with standby throw on the spot
Switching strategy quickly exports electrical control order isolated fault, and carries out protection control to power grid, and system response speed is fast, mentions
High power supply reliability improves power supply quality, promotes operation of power networks efficiency, and then improving the reliability of power grid, and shortening failure causes
Power off time, exclude structural security risk from source, realize the condition that composite power supply system automatically switches, supply power grid
Electric reliability is reached advanced world standards, and is had a good application prospect.
Detailed description of the invention
Fig. 1 is the system block diagram of the adaptive region spare power automatic switching system under the mode of the invention based on composite power supply；
Fig. 2 is schematic diagram of double mother partitions with bypass supply powering mode of the invention；
Fig. 3 is the schematic diagram of chain type powering mode of the invention；
Fig. 4 is the backboard plug-in unit schematic diagram of spare power automatic switching system device of the invention；
Fig. 5 is the work-based logic signal of the adaptive region spare power automatic switching method under the mode of the invention based on composite power supply
Figure.
Specific embodiment
Below in conjunction with Figure of description, the present invention is further illustrated.
As shown in Figure 1, the adaptive region spare power automatic switching system under the mode of the invention based on composite power supply, is applied in double mothers
Under the composite power supply mode of segmentation band bypass connection, including N number of spare power automatic switching system device, select wherein any one prepared auto restart system
Bulk cargo is set as prepared auto restart central station equipment, and each spare power automatic switching system device is provided with analog acquisition interface, intake acquisition connects
Mouth and the amount of outputing output interface；
Double mother partitions are connected separately with a spare power automatic switching system dress with each statements based on collusion station under bypass connection composite power supply mode
It sets；
The analog acquisition interface of the spare power automatic switching system device, for being responsible for the line voltage distribution and route at corresponding statements based on collusion station
The acquisition of current-mode analog quantity, and busbar voltage is calculated according to collection capacity, and be converted into corresponding electrical quantity status signal, it above send to standby
From throwing central station equipment；
The intake acquisition interface of the spare power automatic switching system device, electrical quantity status signal for being responsible for receiving and is opened
Signal is measured in pass, and carries out fault location, automatic to determine wide area and on the spot prepared auto restart movement priority, and is filled by prepared auto restart master station
It sets and sends electrical control order to corresponding backup auto-activating device；
The amount of the outputing output interface of the spare power automatic switching system device receives the transmission of prepared auto restart central station equipment for being responsible for
Electrical control order is completed to realize the power switching of power grid to the electrical control at corresponding statements based on collusion station.
As shown in Fig. 2, the power grid under the composite power supply mode of double mother partitions with bypass connection, including single double-bus
Power station, single independent electrical source station, multiple statements based on collusion station, the multiple statements based on collusion station forms ring connection, the single independent current source
It stands and powers for the statements based on collusion station of inside, under normal operation mode, open loop point is the block switch at two sides statements based on collusion station, remaining statements based on collusion station
It is coincidence；Under non-normal operation mode, single independent electrical source station is out of service, and statements based on collusion station forms annular formula wiring hand in hand,
The statements based on collusion station is single mother partition statements based on collusion station.
Being sent on the backup auto-activating device to the electrical quantity status signal of prepared auto restart central station equipment, including mother I and mother II has pressure
Passive state signal, No.1 inlet wire and No. two inlet wires have pressure passive state signal, No.1 inlet wire and No. two inlet wires to have stream without stream shape
State signal, inlet wire fault current status signal, inlet wire fault current direction status signal, inlet wire failure zero-sequence current status signal
With inlet wire fault negative sequence current status signal.
The electrical control order that the prepared auto restart central station equipment is sent, including prepared auto restart allows order, jumping circuit to open on the spot
Close order and the order of zygonema way switch.
It is connected between N number of backup auto-activating device by single mode optical fiber, and carries out real time data in a manner of GOOSE message and lead to
Letter,
The throwing of the prepared auto restart central station equipment is moved back to be completed by the setting operation to control word.
As shown in figure 3, the adaptive region spare power automatic switching method under the mode of the invention based on composite power supply, including compound confession
Power grid operates normally control model, composite power supply power grid abnormal running control model, and process is as follows,
Under composite power supply power grid normal operation mode, the recharge logic of each backup auto-activating device is that prepared auto restart charging is patrolled on the spot
Volume, each backup auto-activating device judges that it connects whether corresponding statements based on collusion station is in normal inlet wire or bridge for throwing mode, if meeting it
Middle one mode, then spare power automatic switching system investment carries out prepared auto restart charging on the spot on the spot, and carries out the mode simultaneously and charge to charging
It completes；
If each backup auto-activating device meets prepared auto restart electric discharge logical condition on the spot, on the spot the electric discharge of prepared auto restart investment；
Under composite power supply power grid abnormal running control model, the recharge logic of each backup auto-activating device is that wide area prepared auto restart fills
Electric logic, each backup auto-activating device judge that it connects the annular that corresponding statements based on collusion station is formed and hands in hand in wiring, if only one
The switch at statements based on collusion station in quartile, simultaneously remaining statements based on collusion station switch all in coincidence and two sections of main power supply station bus have pressure,
All statements based on collusion station bus has that pressure, there is no other discharging conditions that it is wide to control each backup auto-activating device if above-mentioned condition meets simultaneously
Domain prepared auto restart, and switch stand corresponding backup auto-activating device in quartile statements based on collusion for prepared auto restart on the spot is carried out, and are somebody's turn to do simultaneously
Mode charges to charging complete；If each backup auto-activating device meets wide area prepared auto restart electric discharge logical condition, the electric discharge of wide area prepared auto restart.
The electric discharge of the prepared auto restart on the spot logical condition, meets one of the following conditions, specially (1) region prepared auto restart system
System is not put into；(2) backup circuit breaker, which is not at, jumps position；(3) incoming switch is manually disconnected；(4) in action process switch refuse jump or
It refuses to close；(5) prepared auto restart acts successfully on the spot.
The wide area prepared auto restart electric discharge logical condition, meets one of the following conditions, specially (1) region prepared auto restart system
System is not put into；(2) open loop point switchs coincidence；(3) backup auto-activating device where open loop point receives abnormal；(4) main website receives any
Communication abnormality when backup auto-activating device information；(5) two sections of main power supply station bus is without pressure；(6) either switch malposition；(7) appoint
One statements based on collusion switch is by artificial tripping；(8) statements based on collusion switch is refused to jump；(9) certain route at statements based on collusion station throws maintenance；(10) open loop point two sides event
Barrier；(11) power station bus-bar fault where open loop point；(12) open loop point opposite side power station bus-bar fault；(13) route event where open loop point
Barrier；(14) route opposite side where open loop point switchs jump；(15) it is confirmed after system acting；(16) wide area prepared auto restart closes a floodgate dynamic
Make.
After charging complete, each backup auto-activating device determines operational mode automatically, if the following conditions are met for the moment: (1) non-
Open loop point switch jumps position without stream；(2) power station bus is without pressure and outlet is without stream；(3) there is bus differential protection action；(4) there is route light
Fine longitudinal difference protection movement；(5) statements based on collusion station where open loop point or its opposite side statements based on collusion station are without pressure and inlet wire is without stream, then region prepared auto restart system
System starting, carries out fault location, after waiting tripping delay, executes the trip signal of isolated fault, when confirmation is lost close to fault point
The former main power supply station switch in power station jumps position, route without stream and after bus is without pressure, the line switching of former open loop point is closed, by another
Restore to realize the power switching of power grid to the power supply at power loss statements based on collusion station in the independent electrical source station of side.
" charging " word of above-mentioned record adopts the term inside automatic switching device of standby power supply, and region spare power automatic switching system allows
Each condition (such as pressing plate, control word, the position of the switch, busbar voltage) of work starts to charge after meeting, and the charged time (can pass through
Fixed value adjusting is generally defaulted as 15 seconds) charging preparation is completed afterwards, logic is thrown in charging complete standby to be started, herein
Charging is interpreted as region spare power automatic switching system and meets operating condition, ready.
Below according to the adaptive region spare power automatic switching system and method under the mode of the invention based on composite power supply, one is introduced
Specific embodiment,
In embodiment as shown in Figure 2, under normal operation, 1 double mother partition power station, 1 independent electrical source station is gone here and there with 3
For in double mother partitions band bypass connection powering mode primary connection at station, the block switch at the station C and the station E is open loop point, power station A
Band outlet switch A1 A2, and C station mother I is powered with the station E mother II by power station A；Power station B band outlet switch B1 B2, and the station C I
Female, E station mother II and the station D are powered by power station B.Each route is it is possible that line fault, power station and statements based on collusion station may
Bus-bar fault occurs, when any of the above-described failure, which occurs, leads to certain bus loss of pressure, the present invention understands tripping close to fault point power loss
The former main power supply switch stood, prepared auto restart, preferential combination switch C3 close E3 if unsuccessful from throwing on the spot for starting；
When power station B is overhauled, when B1D4 and B2D5 route is out of service, as shown in figure 3, the station C D E becomes to pull bangle
Formula statements based on collusion structure, the point of open loop at this time can be any line switching or block switch in the structure, and other switches are in coincidence
Operation, under this method of operation, line fault or bus-bar fault may occur everywhere for K1-K10, line switching A1, A2,
It may occur to switch jump failure at C1, C2, C3, D1, D2, D3, E1, E2, E3, bus loss of pressure event may occur for power station
Barrier.If any of the above-described failure, which occurs, leads to three certain bus power loss in station, the present invention can automatic tripping close on the switch of fault point,
Open loop point D1 is closed, the statements based on collusion station after ensureing isolated fault is respectively by two sections of bussed supplies of power station A.
Adaptive region spare power automatic switching system of the invention can support the chain type at 2 220kV power stations, 2 to 5 statements based on collusion stations to supply
Power mode, the statements based on collusion station number of chain type Connection Mode does not exceed 5 under normal circumstances, which can be currently electric with automatic identification
Net operational mode is simultaneously corresponding on the spot for throwing and wide area for throwing movement according to fault type investment.Such as K7 failure, the station D is standby on the spot to be thrown
It may all be acted with the standby throwing of wide area, integrated spare power automatic switching system acts wide area preferentially for throwing, if wide area is unsuccessful for throwing, can carry out
The station D is standby on the spot to throw.
As shown in Figure 1, region spare power automatic switching system configures entire spare power automatic switching system according to the principle of hierarchical control, in power supply
Backup auto-activating device is respectively set in station of standing and act in collusion to make each other's confessions, can be chosen according to operating condition wherein a device as prepared auto restart master station dress
It sets.The serial connection of physical layer is carried out between each backup auto-activating device by single mode optical fiber, data flow passes through respective backup auto-activating device
Embedded ethernet switching module carries out serial data communication, and link layer star is established between backup auto-activating device and sub-station device
Connection simplifies communication wires, reduces the hardware cost that data communication is carried out by using external switching equipment, each backup auto-activating device
Busbar voltage is calculated according to collected line voltage distribution and line current analog quantity and is converted into the status signal of respective electric amount,
Such as bus has pressure, bus to have stream, route without signals such as streams without pressure, route, switchs with corresponding statements based on collusion station and adjacent power station
Amount signal together in a manner of remote signalling displacement on send to prepared auto restart central station equipment.
Prepared auto restart central station equipment carries out fault location according to the electrical quantity status signal and on-off model received, automatically
Determine wide area and prepared auto restart acts priority on the spot, sends tripping according to standby throwing success or not classification or close a floodgate and order to corresponding
Backup auto-activating device；Remaining backup auto-activating device executes the order of central station equipment, and the tripping received, order of closing a floodgate are converted to routine
Contact is outputed and is linked into tradition tripping, closing circuit realizes jump, the operation of zygonema way switch, the conjunction of substation where being completed at the same time
The functions such as lock after accelerated protection, PT broken string, CT broken string.
It is known that the protective device in power station includes: power station configuration busbar protective device；Statements based on collusion station configuration bus protection
Device and equipment for protecting optical fibre longitudinal difference；The wherein action connection point of the busbar protective device and equipment for protecting optical fibre longitudinal difference at each statements based on collusion station
It is separately connected the intake acquisition interface of corresponding sub-station device.
As shown in figure 4, backup auto-activating device, which is carried on the back, inserts CPU card, AC plug-in unit, two blocks of IO plug-in units and power insert.CPU card is negative
Blame analog acquisition and calculating, substation state logic operation and line status analysis, operational mode identification, standby throwing logical operation
With movement.And integrated ethernet switching module, it is responsible for transmitting-receiving breaker tripping and closing order, respective switch amount signal and each section of system
The MESSAGE EXCHANGE of point；Line voltage distribution and current-mode analog quantity are converted small signal by AC plug-in unit；IO plug-in unit is responsible for opening adopting into signal
Collection and tripping, outlet of closing a floodgate.
As shown in figure 5, the work-based logic of the adaptive region spare power automatic switching method under the mode of the invention based on composite power supply,
Region spare power automatic switching system can be normal to transport by the corresponding operational mode of breath automatic identification of delivering letters on each device, in the present embodiment
In row situation, each transformer substation spare power automatic switching assembly first carries out standby throwing logic on the spot when breaking down.When route B1D4 and B2D5 are equal
When the fault condition of power loss occurs, region spare power automatic switching system understands the switch on the tripping route, and preferentially closes C3 switch.If from throwing
Unsuccessful, then tripping C3 is switched, and closes E3 switch.When bypass supply station is out of service, for the string under chain type Connection Mode
For circuit, meet only one switch in quartile, and when operating status meets preset operational mode and charge condition, region is standby
By adjusting, wide area is completed in delay to self-operation system and standby throw is charged on the spot.Under charge condition, meet any discharging condition, then for certainly
Throwing system is discharged immediately.In the case where grid collapses, spare power automatic switching system can be according to operational mode, fault type, failure
Position preferentially selects the standby purpose thrown to realize fast recovery of power supply of wide area.After system completes fault location, complete set start-up is waited
The trip signal (while sending the order of tripping small power supply) of isolated fault is executed after tripping delay, confirmation trip switch becomes quartile
And it is switched without waiting delay of closing a floodgate to close open loop point after stream mode again.If wide area prepared auto restart is unsuccessful, starts standby throw on the spot and patrol
Volume, and ensure to avoid together in TU1 in fault bus figure to be tripping delay, TU3 is delay of closing a floodgate.
Region spare power automatic switching system action logic and operation of power networks state, statements based on collusion station number, open loop point position, electric network fault class
Type is closely related.When electric network fault, system central station equipment selects to be suitble to according to statements based on collusion station number, open loop point position, fault type
Prepared auto restart logic, tripping close to fault point power loss station former main power supply switch, close statements based on collusion circuit original place in open loop point
Line switching.By taking the practical different operational modes of Fig. 2 and power grid shown in Fig. 3 as an example, its fault actions logic is analyzed, it is specific as follows
Shown in table 1, table 2:
1 pair of mother partition band bypass supply wiring prepared auto restart action logic table of table
| Serial number | Fault location | Spare power automatic switching system action logic |
| 1. | K1 point failure | BRKR Breaker A1 C1, combination switch C3 |
| 2. | K2 point failure | BRKR Breaker C1 C3, the station C is standby to launch electricity |
| 3. | K3 point failure | BRKR Breaker C2 C3, the station C is standby to launch electricity |
| 4. | K4 point failure | BRKR Breaker C2 D1, combination switch C3 |
| 5. | K5 point failure | BRKR Breaker D4 D1 D3, combination switch C3 |
| 6. | K6 point failure | BRKR Breaker D5 D2 D3, combination switch E3 |
| 7. | K7 point failure | BRKR Breaker D2 E1, combination switch E3 |
| 8. | K8 point failure | BRKR Breaker E1 E3, the station E is standby to launch electricity |
| 9. | K9 point failure | BRKR Breaker E2 C3, the station E is standby to launch electricity |
| 10. | K10 point failure | BRKR Breaker A2 E2, combination switch E3 |
| 11. | K11 point failure | BRKR Breaker D4 B1 |
| 12. | K12 point failure | BRKR Breaker D5 B2 |
| 13. | The equal power loss of B1D4 and B2D5 | BRKR Breaker D4 B1 D5 B2, combination switch C3 |
2 chain type wiring of table is standby to throw action logic table
To sum up, the adaptive region spare power automatic switching system and method under the mode of the invention based on composite power supply, can be automatic
The method of operation for identifying current compound power grid passes through the analog quantity and protection act of substation where acquiring backup auto-activating device in real time
Signal carries out accident analysis positioning, provides optimal power supply switching strategy with standby throw of wide area in combination with standby throw on the spot, quickly defeated
Electrical control order isolated fault out, and protection control is carried out to power grid, system response speed is fast, improves power supply reliability, changes
Kind power supply quality promotes operation of power networks efficiency, and then improves the reliability of power grid, shortens power off time caused by failure, from source
Structural security risk is excluded on head, realizes the condition that composite power supply system automatically switches, power grid power supply reliability is made to reach state
Border advanced level, has a good application prospect.
Basic principles and main features and advantage of the invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe originals of the invention
Reason, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements
It all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent circle
It is fixed.
Claims (10)
1. based on the adaptive region spare power automatic switching system under composite power supply mode, it is characterised in that: apply by double mother partition bands
Under the composite power supply mode of road wiring, including N number of spare power automatic switching system device, wherein any one spare power automatic switching system device is made for selection
For prepared auto restart central station equipment, each spare power automatic switching system device is provided with analog acquisition interface, intake acquisition interface and outputs
Measure output interface；
Double mother partitions are connected separately with a spare power automatic switching system device with each statements based on collusion station under bypass connection composite power supply mode；
The analog acquisition interface of the spare power automatic switching system device, for being responsible for the line voltage distribution and line current at corresponding statements based on collusion station
Analog acquisition, and busbar voltage is calculated according to collection capacity, and be converted into corresponding electrical quantity status signal, it above send to prepared auto restart
Central station equipment；
The intake acquisition interface of the spare power automatic switching system device, electrical quantity status signal and switching value for being responsible for receiving
Signal, and fault location is carried out, it is automatic to determine wide area and on the spot prepared auto restart movement priority, and sent out by prepared auto restart central station equipment
Send electrical control order to corresponding spare power automatic switching system device；
The amount of the outputing output interface of the spare power automatic switching system device receives the electrical of prepared auto restart central station equipment transmission for being responsible for
Control command is completed to realize power switching to the electrical control at corresponding statements based on collusion station.
2. the adaptive region spare power automatic switching system under the mode according to claim 1 based on composite power supply, it is characterised in that:
Power grid under the composite power supply mode of double mother partitions with bypass connection, including single double-bus power station, single independent electrical
Source station, multiple statements based on collusion station, the multiple statements based on collusion station form ring connection, and the single independent electrical source station is that the statements based on collusion station of inside supplies
Electricity, under normal operation mode, open loop point is the block switch at two sides statements based on collusion station, and remaining statements based on collusion station is coincidence；Improper fortune
Under row mode, single independent electrical source station is out of service, and statements based on collusion station forms annular formula wiring hand in hand, and the statements based on collusion station is single mother stock
Section statements based on collusion station.
3. the adaptive region spare power automatic switching system under the mode according to claim 1 based on composite power supply, it is characterised in that:
Being sent on the spare power automatic switching system device to the electrical quantity status signal of prepared auto restart central station equipment, including mother I and mother II has pressure without pressure
Status signal, No.1 inlet wire and No. two inlet wires have pressure passive state signal, No.1 inlet wire and No. two inlet wires to have stream to believe without stream mode
Number, inlet wire fault current status signal, inlet wire fault current direction status signal, inlet wire failure zero-sequence current status signal and into
Line fault negative sequence current status signal.
4. the adaptive region spare power automatic switching system under the mode according to claim 1 based on composite power supply, it is characterised in that:
The electrical control order that the prepared auto restart central station equipment is sent, including on the spot prepared auto restart allow order, jumping circuit switch command and
Zygonema way switch order.
5. the adaptive region spare power automatic switching system under the mode according to claim 1 based on composite power supply, it is characterised in that:
It is connected between N number of spare power automatic switching system device by single mode optical fiber, and carries out real-time data communication in a manner of GOOSE message.
6. the adaptive region spare power automatic switching system under the mode according to claim 1 based on composite power supply, it is characterised in that:
The throwing of the prepared auto restart central station equipment is moved back to be completed by the setting operation to control word.
7. based on the adaptive region spare power automatic switching method under composite power supply mode, it is characterised in that: for any one of claim 1-6
The control method based on the adaptive region spare power automatic switching system under composite power supply mode, including composite power supply power grid are normal
Control model, composite power supply power grid abnormal running control model are run, process is as follows,
Under composite power supply power grid normal operation mode, the recharge logic of each spare power automatic switching system device is that prepared auto restart charging is patrolled on the spot
Volume, each spare power automatic switching system device judges that it connects whether corresponding statements based on collusion station is in normal inlet wire or bridge for throwing mode, if full
Foot one of which mode, then spare power automatic switching system investment carries out prepared auto restart charging on the spot on the spot, and carries out the mode simultaneously and charge to
Charging complete；
If each spare power automatic switching system device meets prepared auto restart electric discharge logical condition on the spot, on the spot the electric discharge of prepared auto restart investment；
Under composite power supply power grid abnormal running control model, the recharge logic of each spare power automatic switching system device is that wide area prepared auto restart fills
Electric logic, each spare power automatic switching system device judge that it connects the annular that corresponding statements based on collusion station is formed and hands in hand in wiring, if only
Switch of the switch at one statements based on collusion station in quartile while remaining statements based on collusion station is all in coincidence and two sections of main power supply station bus
There are pressure, all statements based on collusion station bus to have pressure, if above-mentioned condition meets simultaneously control each prepared auto restart there is no other discharging conditions
System and device wide area prepared auto restart, and switch are in quartile and act in collusion to make each other's confessions the corresponding spare power automatic switching system device in station for carrying out on the spot for certainly
It throws, and carries out the mode simultaneously and charge to charging complete；If each spare power automatic switching system device meets wide area prepared auto restart electric discharge logic item
Part, then wide area prepared auto restart discharges.
8. the adaptive region spare power automatic switching method under the mode according to claim 7 based on composite power supply, it is characterised in that:
The electric discharge of the prepared auto restart on the spot logical condition, meets one of the following conditions, specially (1) region spare power automatic switching system is not thrown
Enter；(2) backup circuit breaker, which is not at, jumps position；(3) incoming switch is manually disconnected；(4) switch is refused to jump or refuse to close in action process；
(5) prepared auto restart acts successfully on the spot.
9. the adaptive region spare power automatic switching method under the mode according to claim 7 based on composite power supply, it is characterised in that:
The wide area prepared auto restart electric discharge logical condition, meets one of the following conditions, specially (1) region spare power automatic switching system is not thrown
Enter；(2) open loop point switchs coincidence；(3) the spare power automatic switching system device where open loop point receives abnormal；(4) main website receives any standby
Communication abnormality when self-operation system device information；(5) two sections of main power supply station bus is without pressure；(6) either switch malposition；(7)
Any statements based on collusion switch is by artificial tripping；(8) statements based on collusion switch is refused to jump；(9) certain route at statements based on collusion station throws maintenance；(10) open loop point two sides
Failure；(11) power station bus-bar fault where open loop point；(12) open loop point opposite side power station bus-bar fault；(13) route where open loop point
Failure；(14) route opposite side where open loop point switchs jump；(15) it is confirmed after system acting；(16) wide area prepared auto restart closes a floodgate dynamic
Make.
10. the adaptive region spare power automatic switching method under the mode according to claim 7 based on composite power supply, feature exist
In: after charging complete, each spare power automatic switching system device determines operational mode automatically, if the following conditions are met for the moment: (1) non-to open
Circling point switch jumps position without stream；(2) power station bus is without pressure and outlet is without stream；(3) there is bus differential protection action；(4) there is circuit optical fiber
Longitudinal difference protection movement；(5) statements based on collusion station where open loop point or its opposite side statements based on collusion station are without pressure and inlet wire is without stream, then region spare power automatic switching system
Starting carries out fault location, after waiting tripping delay, executes the trip signal of isolated fault, when confirmation is close to fault point power loss
The former main power supply station switch stood jumps position, route without stream and after bus is without pressure, the line switching of former open loop point is closed, by the other side
Independent electrical source station restore to power loss statements based on collusion station power supply, realize power switching.
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| CN109510299A (en) * | 2018-11-05 | 2019-03-22 | 国电南瑞科技股份有限公司 | Fault identification and decision system under a kind of Heavy-haul Freight railway over-zone feeding mode |
| CN109842204B (en) * | 2019-04-11 | 2021-06-29 | 国网江苏省电力有限公司镇江供电分公司 | Method for controlling standby power supply to be switched on at power supply side of hot standby circuit based on optical fiber channel |
| CN110601350A (en) * | 2019-09-23 | 2019-12-20 | 云南电网有限责任公司曲靖供电局 | High-voltage self-adaptive area spare power automatic switching system and spare power automatic switching control method thereof |
| CN111553554A (en) * | 2020-03-20 | 2020-08-18 | 云南电网有限责任公司普洱供电局 | Regional spare power automatic switching control system and operation risk management and control method thereof |
| CN111900803A (en) * | 2020-08-07 | 2020-11-06 | 国网湖北省电力有限公司荆门供电公司 | Recursive remote backup power automatic switching method and device based on GOOSE communication |
| CN112383033A (en) * | 2020-10-10 | 2021-02-19 | 国网辽宁省电力有限公司电力科学研究院 | System and method suitable for local rapid spare power automatic switching of power distribution network ring network line |
| CN113964930B (en) * | 2021-11-08 | 2023-06-27 | 国网湖南省电力有限公司 | Automatic cooperative control method and system for standby power supply of series power supply transformer substation |
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