CN106340951B - A kind of layered distribution type Intelligent region spare power automatic switching system - Google Patents
A kind of layered distribution type Intelligent region spare power automatic switching system Download PDFInfo
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- CN106340951B CN106340951B CN201610847644.3A CN201610847644A CN106340951B CN 106340951 B CN106340951 B CN 106340951B CN 201610847644 A CN201610847644 A CN 201610847644A CN 106340951 B CN106340951 B CN 106340951B
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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
- H02J9/061—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 for DC powered loads
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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)
- Supply And Distribution Of Alternating Current (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a kind of layered distribution type Intelligent region spare power automatic switching systems, it includes the substation composition for controlling main website and being mounted on each plant stand, controls and is connected between main website and each substation by synchronous digital communications networks；The control main website has local control layer function and coordinated control layer function, and substation has local control layer function；The region spare power automatic switching system data synchronism for solving the prior art is bad, based on dispatching communication network rather than dedicated communications network so that region prepared auto restart susceptible, locking risk in Network Abnormal or other big business datum amounts be big and the technical problems such as adaptability is limited.
Description
Technical field
The invention belongs to technical field of electric power more particularly to a kind of layered distribution type Intelligent region spare power automatic switching systems.
Background technique
Automatic throw-in equipment of emergency power supply can automatically will rapidly after working power failure or other reasons are disconnected
Backup power source or other normal work power supplys are devoted oneself to work, and one kind that the user for being disconnected working power is unlikely to have a power failure is automatic
Device.Country's 1l0kV power grid open loop operation in recent years, to ensure power supply reliability, each power supply company is in 1l0kV and following change
It is installed with standby white throwing device in power station and actually puts into operation, as the supplement measure for improving power supply reliability.Once power grid
It breaks down, working line or Working transformer will be removed, and enter device action for extension wire by automatic closing at this time
Or spare transformer automatically engages, and shortens the power off time of user.With the opening of electricity market, the whole society is to electric power enterprise
Service request it is higher and higher, and wherein most pay close attention to be undoubtedly user power supply reliability, this is to automatic put-in spair power source
And corresponding automatic throw-in equipment proposes increasingly higher demands.
Microcomputer type auto-switch-on device can only generally acquire the switching value of the relevant device in our station, electricity in conventional substation
The information such as pressure, electric current, when relevant information meets scheduled logic, backup auto-activating device realizes charge or discharge function, if work
When power failure, the function of alternate power autocast is realized.But it is original to patrol when grid operation mode changes
Collecting will fail, and cause prepared auto restart ineffective.Therefore this prepared auto restart is merely able to realize control strategy on the spot, and because normally connecing
The electrical quantity entered is limited, and the function of often considering is relatively simple, it is even more impossible to realize the function of automatically engaging of distant place backup power source,
Have the shortcomings that in simple terms following basic:
1) lack of overall importance.A distant place be can not achieve from the throwing certainly thrown, source multistation restores electricity；
2) limited with the coordination of protection.In the presence of the risk from throwing He Zhong Library when relaying configuration deficiency, overstepping；
3) limited with the coordination of peace certainly.Cannot be distinguished is power loss caused by power loss caused by cutting load or fault trip；
4) limited to the measure of active system.Low-pressure starting sensitivity is insufficient and delay is longer, and it is active can only to cut off our station
Branch；
5) measure for protecting load is limited.Back-up system power supply capacity can not be perceived, the reply of back-up system overload is arranged
Apply deficiency；
6) lack adaptability.From throwing, logical general is not strong, lacks to the variation of electrical wiring and grid operation mode suitable
Ying Xing；
7) lack selectivity.Prepared auto restart between different elements and voltage class, which lacks, to be coordinated, and there are more optional standby cultellations
When lack selectivity.
In order to overcome drawbacks described above, the newest prior art has developed region spare power automatic switching system, but the area of the prior art
Although domain spare power automatic switching system can be realized that a distant place is standby to throw and source multistation restores electricity, but there is also following problems:
1) it is mostly based on EMS platform, it is analysis, too long the time required to decision, issuing, executing, frequently as conventional prepared auto restart
Standby, the defect of conventional prepared auto restart can not be made up；
2) data synchronism is bad.SCADA data does not have markers, and the data based on the obstructed moment will affect control logic
It executes, or even there are mistakes.Such as fail to start, charge and discharge.It is synchronized if being realized with window technique, delay will be further increased；
3) dispatching communication network is based on rather than dedicated communications network, so that region prepared auto restart is in Network Abnormal or other business
Susceptible when data volume is big；
4) locking risk is big.System process and Database Systems outlets are abnormal, host is restarted, active-standby switch when, be easy into
Enter blocking
5) adaptability is limited.Control strategy based on customization makes it that can only meet the requirement of specific run mode.
Summary of the invention
The technical problem to be solved in the present invention: providing a kind of layered distribution type Intelligent region spare power automatic switching system, existing to solve
Have the region spare power automatic switching system data synchronism of technology it is bad, based on dispatching communication network rather than dedicated communications network so that area
Domain prepared auto restart susceptible, locking risk in Network Abnormal or other big business datum amounts is big and the technologies such as adaptability is limited are asked
Topic.
Technical solution of the present invention:
A kind of layered distribution type Intelligent region spare power automatic switching system, it includes the substation for controlling main website and being mounted on each plant stand
Composition is controlled and is connected between main website and each substation by synchronous digital communications networks；The control main website has local control
Layer function and coordinated control layer function, substation have local control layer function.
The coordinated control layer function includes isolated island discrimination function module, standby can throw discrimination function module, load control system meter
Calculate functional module and backup circuit breaker selection function module.
The local controls layer function
Information collection function module: it is responsible for switch, electric current, voltage, the information collection for controlling signal, bussed supply load
And it can cutting load information collection；
Backup power automatic switching function on the spot: backup power automatic switching function realizes that artificial selection throwing is moved back on the spot, transports when system meets prepared auto restart on the spot
When row condition, backup power automatic switching function on the spot is put into, the function is otherwise exited.
The isolated island discrimination function module, by all breakers in system real-time judge region and its every the position shape of knife
State establishes the real-time topology information of rack, is differentiated according to real-time topology information to electrical island isolated in region, to bus institute
There is the location status of adjacent switch to do combinational logic calculating, identify the bus in isolated island decompression state, to find failure
Caused decompression region.
Described standby to throw discrimination function module, it obtains isolated island region and its mode expansions from isolated island differentiation；From jump
Obtain region before lock in system mode standby can throw switch；Successively coincidence shape can be set as the location variable for throwing switch for each
State substitutes into mode expansions and carries out isolated island judgement, and determining that this standby can throw switch if result is connected state is the isolated island region
Standby cultellation；Standby the logic calculation switched can be thrown to all, determine that the isolated island region can not if result is not connected state
With standby cultellation；It is all to differentiate that result is that the switch that standby throw of networking can be used as the available standby cultellation in the isolated island region, to all
It standby can throw switch to complete after judging, obtain the available standby cultellation set in isolated island region；Standby switch can be thrown for there are 1 or more
, each standby throwing scheme will also be optimized than choosing and anti-false judgment.
The load control system computing function module it include turn for ability differentiate and cutting load differentiate；
Described turn differentiates it is to obtain the power supply capacity value of corresponding grid structure according to the steady limit value of element heat for ability；
Turn to differentiate for ability to calculate decompression side minimum according to failure forefoot area electric network information and load level situation and turn for negative
Lotus, prepped side minimum supply load, prepped side maximum turn for ability；
Decompression side minimum turns can cutting load for decompression side total load-decompression side before load=failure；
Prepped side total load-prepped side can cutting load before prepped side minimum supply load=failure；
Prepped side maximum turns for prepped side power supply capacity before ability=failure-prepped side minimum supply load；
The cutting load, which differentiates, calculates decompression side total load, prepped side power supply nargin according to failure forefoot area electric network information；
Prepped side power supply capacity-prepped side supply load before prepped side power supply nargin=failure；
Nargin > decompression side total load if prepped side is powered, does not take load control system measure for throwing system；
Nargin < decompression side total load if prepped side is powered needs cutting load amount=prepped side power supply nargin-mistake for throwing system
Press side total load.
Backup circuit breaker selection function module be to 1 or more can standby cultellation be ranked up, select optimal standby cultellation progress
It is standby to throw；Its selection method includes:
A, the standby cultellation of cutting load is not required to prior to needing the standby cultellation of cutting load；B, the standby cultellation of cutting load, core are both needed to
Load need to the amount of cutting it is few prior to need to be more than the amount of cutting；C, it is not required to the standby cultellation of cutting load, according in load control system computing module
Result prepped side turn high prior to turning a standby cultellation low for ability for ability.
Beneficial effects of the present invention:
The present invention is designed by layered distribution type, is coordinated the backup auto-activating device of each website, be can adapt to each of power supply system
The kind method of operation, the limitation of not heated backup circuit breaker position is comprehensive to use various control measure, has overload cutting load, joins and cut
The functions such as small power supply, it is ensured that backup auto-activating device can be acted correctly under various maintenance runs.
The present invention all plant stands related with network frame topology relationship, control measure in region are layouted, using layer distributed
Formula structure is divided into a control main website and multiple substations on hardware, is functionally made of coordinated control layer and local control layer；It is main
It stands in addition to having local control layer function, is also equipped with the coordinated control layer function of whole system, including isolated island differentiates, standby can throw and sentence
Not, the functional modules such as load control system calculates, backup circuit breaker selects；Substation only needs have local control layer function.When layer function is controlled in association
When can be normal, coordinated control be added in all websites, realization regional power grid system, comprehensive, coordination, selectable, suitable
Answer various modes, the control of reliable prepared auto restart；When association's control layer exits extremely, each website still has the local control layer of dispersion
Function guarantees that conventional backup power automatic switching function on the spot is still available；Substation is connect with main website by synchronous digital communications networks and is interacted real
When information, when local control is effective with coordinated control, two layer functions are coordinated using time coordination mechanism；
Advantages of the present invention:
(1) it is designed based on layered distribution type, even if communication failure between association's control layer and station level, station level also has independent
Normal station domain backup power automatic switching function, at the same can also lightweight association control the layer scale of construction, facilitate system operation and maintenance and upgrading.
It (2) include that isolated island differentiates, standby can throw the functional modules such as differentiation, load control system calculating, backup circuit breaker selection.Multiple
Selection cooperation can be flexibly carried out according to load condition between standby cultellation, restore block supply to greatest extent.
(3) conventional standby throw is the control based on decompression state, and the present invention is the control based on trip event.
(4) the conventional standby control object thrown or customized for throwing is fixed or artificial scheduled, can be according to special object
Decompression state realize prepared auto restart control；This system is not limited to specific control object, without artificial scheduled control plan
Slightly, decompression object is defined as the dynamic combined of substation and its bus.
(5) decompression object can be identified in real time according to operation of power networks state and trip event, and is carried out targeted
System restores control, stronger to the adaptability of grid operation mode.
(6) present system is considered as carrying out decompression region isolated network control, but control measure include that backup circuit breaker closes
Lock, load control system etc. have comprehensive feature.
(7) can mutually coordinate with protective device, stability control equipment.
The region spare power automatic switching system data synchronism for solving the prior art is bad, non-dedicated based on dispatching communication network
Communication network, so that region prepared auto restart susceptible, locking risk in Network Abnormal or other big business datum amounts is big and suitable
The technical problems such as answering property is limited.
Detailed description of the invention:
Fig. 1 is structure chart of the invention；
Fig. 2 is a kind of applicable cases schematic diagram of the embodiment of the present invention in power supply system；
Fig. 3 is system coordination of embodiment of the present invention mechanism flow diagram；
Fig. 4 is the real-time processing flow schematic diagram of the present invention；
Fig. 5 is troubleshooting process schematic diagram of the present invention；
Fig. 6 is sequential control process schematic diagram of the present invention.
Specific embodiment
Technical solution of the present invention is further appreciated that for the ease of those skilled in the art, and the present invention is by taking certain power supply system as an example
Technical solution of the present invention is explained:
A kind of layered distribution type Intelligent region spare power automatic switching system, it includes (see figure 1) control main website and is mounted on each factory
The substation composition stood, substation quantity are greater than 1；It controls and is connected between main website and each substation by synchronous digital communications networks
It connects；The control main website has local control layer function and coordinated control layer function, and substation has local control layer function.
The local controls layer function
Information collection function module: it is responsible for switch, electric current, voltage, the information collection for controlling signal, bussed supply load
And it can cutting load information collection；
Association's control order differentiates on the spot and exports function: discriminating whether the order that executable coordinated control layer is sent on the spot, such as
Fruit has executable condition and then executes order；
Backup power automatic switching function on the spot: backup power automatic switching function realizes that artificial selection throwing is moved back on the spot, transports when system meets prepared auto restart on the spot
When row condition, backup power automatic switching function on the spot is put into, the function is otherwise exited.Under maintenance mode, prepped side power nargin deficiency when,
It is recommended that function on the spot is exited, in order to avoid cause prepped side overload that scope of power outage is caused to expand from throwing.
Coordinated control layer mainly has following functions:
(1) state recognition of system and fault detection capability: position of the switch state recognition, tripping detection, switch standby can throw shape
State identification, system anomaly detection；(2) decompression region recognition function is also referred to as isolated island discrimination function module；(3) it standby can throw and differentiate function
Energy；(4) power supply capacity identification and load controlling function；(5) standby cultellation automatic function selecting.
When locally control is effective with coordinated control, two layer functions are coordinated by time coordination mechanism.
Main website is controlled to start using tripping, control sub-station, which is used, to be started without pressure without stream, in start timing control main website prior to
Control sub-station.
Trip event processing is carried out immediately after the inspection to tripping of control main website, forms standby throwing Coordinated Control Scheme, and prolonged
When wait.
During controlling main website delay, meeting will start without pressure without the control sub-station of stream condition in succession, and be prolonged
When wait, needed herein by the adjusting of the action delay of control sub-station to be the actuation time greater than control main website.
Main website delay is controlled to rear, by control sequence successively to substation transmission breaker tripping and closing order, needs to carry out breaker tripping and closing
After the control sub-station of operation receives main website control command, exports and execute after locally verification passes through.
If control sub-station acts successfully, by locally controlling auto-returned after voltage recovery；If movement is unsuccessful, delay is arrived
Afterwards, by local control outlet.
The coordination system is simple, two layers of function opposite independent.Time coordination schematic diagram of mechanism is shown in attached drawing 3.
The coordinated control layer function includes:
Position of the switch state recognition: compound criterion is formed using the electric current and the position of the switch that flow through switch, when switching value is sentenced
According to or electrical quantity criterion be judged to coincidence when, that is, sentence switch "on" position；When switching value criterion, electrical quantity criterion are judged to quartile
When, that is, sentence switch gate-dividing state；When switching value is judged to quartile, electrical quantity is judged to coincidence, then " inconsistent exception " is reported；
Tripping detection: including switching the tripping detection with boundary branch.Switch trip detection is using the electric current for flowing through switch
Compound criterion is formed with the position of the switch then to sentence and trip event has occurred when switching value criterion, electrical quantity criterion sentence tripping；
Branch tripping in boundary detects while using switching value trip criteria, electrical quantity trip criteria, and the differentiation result of the two takes "or" to make
For the judging trip result of boundary branch.
Switching standby can throw state recognition: switch non-maintenance, switch in quartile state, the first/bis- when detecting while meeting
Group voltage >=when having pressure definite value, then by the switch be set as can standby throwing state, otherwise setting switch to can not standby throwing state.
Wherein, when switch is line switching, first group of voltage is bus PT three-phase voltage, and second group of voltage is route PT single-phase electricity
Pressure；When switch is bus connection switch, first group of voltage is mother I PT three-phase voltage, and second group of voltage is mother II PT；
System anomaly detection: when system detection is abnormal to the position of the switch situations such as, abnormality alarming signal can be provided.
It defines decompression region and is in isolated electrical island state, the isolated island discrimination function module passes through system real-time judge
All breakers and its location status every knife in region, establish the real-time topology information of rack, according to real-time topology information pair
Electrical island is isolated in region to be differentiated, combinational logic calculating is done to the location status of all adjacent switches of bus, identifies source
In the bus of isolated island decompression state, to find decompression region caused by failure.
Defining breaker and disconnecting logical value is 0, and closure logical value is 1.Isolated island uses breaker logical variable group in differentiating
Expression formula is differentiated at establishing, and expression formula result, which is 0, indicates island state, indicates connected state for 1.
It is illustrated by taking the grid structure of attached drawing 2 as an example.Failure next stop A-bus, C bus of standing, I mother of E that stands are to have pressure shape
State.Logic can be disconnected according to above-mentioned breaker obtain following formula:
AD branch connection status: A=(A1 × A2)+(A3 × A4)；
CD branch connection status: B=B1 × B2；
DE branch connection status: D=D1 × D2；
It stands C mother branch connection status: C；
It stands E mother branch connection status: E；
After detecting the tripping of AD branch, logic is differentiated into isolated island:
(1) if A=0, i.e. connection branch disconnects between station A and station D, then must lose intermediate pressure section, will carry out next step logic
Judgement, determines decompression regional scope；Otherwise, no decompression region.
(2) on the basis of A=0, if A+B+C=0, illustrate that decompression region is female for station D I；If A+B+D=0 is said
Bright decompression region is station D；If A+B+E=0, illustrate that decompression region is that station D and station E II are female.
Described standby to throw discrimination function module, it obtains isolated island region and its mode expansions from isolated island differentiation；From jump
Obtain region before lock in system mode standby can throw switch；Successively coincidence shape can be set as the location variable for throwing switch for each
State substitutes into mode expansions and carries out isolated island judgement, and determining that this standby can throw switch if result is connected state is the isolated island region
Standby cultellation；Standby the logic calculation switched can be thrown to all, determine that the isolated island region can not if result is not connected state
With standby cultellation；It is all to differentiate that result is that the switch that standby throw of networking can be used as the available standby cultellation in the isolated island region, to all
It standby can throw switch to complete after judging, obtain the available standby cultellation set in isolated island region；Standby switch can be thrown for there are 1 or more
, each standby throwing scheme will also be optimized than choosing and anti-false judgment.
It is illustrated by taking the grid structure of attached drawing 2 as an example.Assuming that AD branch trips under the full mode of connection, system carries out lonely
Island show that island mode expression formula is A+B+E after differentiating, that is, judges that decompression region is that station D and station E II are female.In expression formula, open
It closes B2, switch E and is in front of tripping and can bring orphan into after assuming coincidence respectively to it according to differentiation process standby can be thrown for throwing state
Island mode expansions (A+B+E) carry out logic calculation, if mode expansions result is 1, show the isolated island region can
It is switch B2 and switch E with standby cultellation.
The load control system computing function module it include turn for ability differentiate and cutting load differentiate；
Described turn differentiates it is to obtain the power supply capacity value of corresponding grid structure according to the steady limit value of element heat for ability；
Turn to differentiate for ability to calculate decompression side minimum according to failure forefoot area electric network information and load level situation and turn for negative
Lotus, prepped side minimum supply load, prepped side maximum turn for ability；
Decompression side minimum turns can cutting load for decompression side total load-decompression side before load=failure；
Prepped side total load-prepped side can cutting load before prepped side minimum supply load=failure；
Prepped side maximum turns for prepped side power supply capacity before ability=failure-prepped side minimum supply load；
If prepped side maximum turns to turn for ability < decompression side minimum to illustrate to consider that the control of load peak load is arranged for load
Shi Hou, prepped side power grid are still unable to satisfy the load transfer requirement of decompression side, and standby throwing system will not take decompression region current standby
Control is thrown, otherwise scope of power outage will be caused to expand.
If prepped side maximum turns to turn for ability > decompression side minimum for load to carry out that cutting load is needed to differentiate.
The cutting load, which differentiates, calculates decompression side total load, prepped side power supply nargin according to failure forefoot area electric network information；
Prepped side power supply capacity-prepped side supply load before prepped side power supply nargin=failure；
Nargin > decompression side total load if prepped side is powered, does not take load control system measure for throwing system；
Nargin < decompression side total load if prepped side is powered needs cutting load amount=prepped side power supply nargin-mistake for throwing system
Press side total load.
The grid structure of object power grid is simple, can be according to decompression side, prepped side regional scope, network topology, limited
Section, determination can cutting load point ranges.Here can cutting load point refer to 110kV bus, it is all can cutting load amount press affiliated pass
It is reduction to 110kV bus point.
To can cutting load press fixed number sequence, by minimum cutting principle selection cutting load point, meet load control system and want
It asks.
Backup circuit breaker selection function module be to 1 or more can standby cultellation be ranked up, select optimal standby cultellation progress
It is standby to throw；Its selection method includes:
A, the standby cultellation of cutting load is not required to prior to needing the standby cultellation of cutting load；B, the standby cultellation of cutting load, core are both needed to
Load (important site load) need to the amount of cutting it is few prior to need to be more than the amount of cutting；C, it is not required to the standby cultellation of cutting load, according to load
It controls the result prepped side in computing module and turns high prior to turning the standby cultellation low for ability for ability.
The control flow of this system
Control flow of the invention is broadly divided into three kinds, and specific flow chart is shown in attached drawing 4 ~ 6:
1. real-time process flow
The process is located in timer interrupt service program, every real time tasks of main processing system.Processing in real time
After process starts, data real-time, interactive, whole group processing, system mode differentiation, switch trip detection, the jump of boundary branch are successively carried out
Lock detection, data buffer storage refreshing, trip event synchronization, system charging process, system other processing.Wherein:
Data real-time, interactive: with fixed frequency and each slave device interaction data；
Whole group processing: master station device starts region control under charging complete state, using electrical Sudden Changing Rate and switch changed position
Whole group processed.
System mode differentiates: real time discriminating switching element locations state, breaker can standby throwing states, breaker hand jump mark
Will, having for bus press mark, without pressure mark, protection act mark etc.；
Tripping detection: including switching the tripping detection with boundary branch；
Data buffer storage refreshes: system mode being written to the standby data buffer storage for throwing functional module in region with fixed frequency
In；
Trip event is synchronous: the trip event table in real-time caching being synchronized to area for module caching with fixed frequency
In, juxtaposition area is for start identification；
System charging process: the terms and conditions of real-time detection district system charging, when condition meets postposition region control function
It can open mark.
The other processing of system: include other aspect contents such as man-machine interface, communication.
2. troubleshooting process
In the case that whole group starts and the standby throwing function in region is open, system executes troubleshooting process: 1. in chronological order
Trip event is handled, analyzes and locks decompression control object；2. carrying out standby throwing control processing, decompression control program is formed；3. complete
It exports at control program, discharges region backup power automatic switching function, terminate process.
In this process:
If unlocked effective decompression control object, whole group delay to backed off after random troubleshooting process；
Isolated island differentiation, fault distinguishing are completed in trip event processing, lock effective decompression object；
It is standby throw complete standby to throw in control processing differentiate, turn to differentiate for ability, cutting load calculates, standby cultellation sequencing selection,
Form effective control program；
After exporting control program, continuous control operation and result feedback after the completion of sequential control process.
3. sequential control process
The entering order control flow when there is the control output of region prepared auto restart.
Sequential control process flow assigns control command to the breaker accordingly numbered according to verification, operation order:
(1) substation where switching to reference numeral issues weight BRKR Breaker order.It is verified on the spot without pressure without stream, if failed jump
Then termination process is opened, abnormality alarming signal is sent out；
(2) cutting load is issued to substation where reference numeral load point, cut small power supply order.It is looked into according to decompression bus number
Look for whether it has small power supply access；If cutting load point is located at decompression region, cutting load order need to add local verification and require；If
It is failed to cut off then termination process, send out abnormality alarming signal；
(3) substation where switching to reference numeral, which issues, closes backup circuit breaker order.Closing position is verified, if successfully closing a floodgate
Overcurrent protection function is pressed in opening again in short-term；The termination process if failed sends out abnormality alarming signal.
Claims (4)
1. a kind of layered distribution type Intelligent region spare power automatic switching system, it is characterised in that: it includes control main website and is mounted on each
The substation of plant stand forms, and controls and is connected between main website and each substation by synchronous digital communications networks；The control main website tool
Standby local control layer function and coordinated control layer function, substation have local control layer function；The coordinated control layer function packet
It includes isolated island discrimination function module, standby can throw discrimination function module, load control system computing function module and backup circuit breaker selection function
Module；The isolated island discrimination function module, by all breakers in system real-time judge region and its every the location status of knife,
The real-time topology information for establishing rack differentiates electrical island isolated in region according to real-time topology information, all to bus
The location status of adjacent switch does combinational logic calculating, identifies the bus in isolated island decompression state, draws to find failure
The decompression region risen；The backup circuit breaker selection function module be to 1 or more can standby cultellation be ranked up, select optimal standby
Cultellation carries out standby throw；Its selection method includes: the standby cultellation for being not required to the standby cultellation of cutting load prior to needing cutting load；B, it is both needed to cut
The standby cultellation of load, core load need to the amount of cutting it is few prior to need to be more than the amount of cutting；C, it is not required to the standby cultellation of cutting load, according to negative
Lotus controls the result prepped side in computing module and turns high prior to turning the standby cultellation low for ability for ability.
2. a kind of layered distribution type Intelligent region spare power automatic switching system according to claim 1, it is characterised in that: the local
Controlling layer function includes:
Information collection function module: it is responsible for switch, electric current, voltage, the information collection for controlling signal, bussed supply load and can
Cutting load information collection；
Backup power automatic switching function on the spot: backup power automatic switching function realizes that artificial selection throwing is moved back on the spot, runs item when system meets prepared auto restart on the spot
When part, backup power automatic switching function on the spot is put into, the function is otherwise exited.
3. a kind of layered distribution type Intelligent region spare power automatic switching system according to claim 1, it is characterised in that: it is described can be standby
Discrimination function module is thrown, it obtains isolated island region and its mode expansions from isolated island differentiation；Before tripping in system mode
Standby switch can be thrown to region；Each location variable switched that standby can throw successively is set as coincidence state, substitution mode expansions
Isolated island judgement is carried out, determines that this standby can throw the standby cultellation that switch is the isolated island region if result is connected state；To it is all can
The standby logic calculation for throwing switch determines the isolated island region without available standby cultellation if result is not connected state；All differentiations
As a result it can be used as the available standby cultellation in the isolated island region for networking for switch is thrown, judgement can be completed to all for switch is thrown
Afterwards, the available standby cultellation set in isolated island region is obtained；For can be standby throwing switch there are 1 or more, to each standby throwing scheme into
Row optimization is than choosing and anti-false judgment.
4. a kind of layered distribution type Intelligent region spare power automatic switching system according to claim 1, it is characterised in that: the load
Controlling computing function module, it includes turning to differentiate for ability to differentiate with cutting load；
Described turn differentiates it is to obtain the power supply capacity value of corresponding grid structure according to the steady limit value of element heat for ability；
Turn to differentiate for ability according to failure forefoot area electric network information and load level situation, calculate decompression side minimum turn for load,
Prepped side minimum supply load, prepped side maximum turn for ability；
Decompression side minimum turns can cutting load for decompression side total load-decompression side before load=failure；
Prepped side total load-prepped side can cutting load before prepped side minimum supply load=failure；
Prepped side maximum turns for prepped side power supply capacity before ability=failure-prepped side minimum supply load；
The cutting load, which differentiates, calculates decompression side total load, prepped side power supply nargin according to failure forefoot area electric network information；It is spare
Prepped side power supply capacity-prepped side supply load before side power supply nargin=failure；
Nargin > decompression side total load if prepped side is powered, does not take load control system measure for throwing system；
Nargin < decompression side total load if prepped side is powered needs cutting load amount=prepped side power supply nargin-decompression side for throwing system
Total load.
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| CN106877342A (en) * | 2017-03-14 | 2017-06-20 | 许继集团有限公司 | A kind of cutting load control method |
| CN107222020A (en) * | 2017-06-20 | 2017-09-29 | 国家电网公司 | A kind of stability control equipment and backup auto-activating device interlocking control method, apparatus and system |
| CN107703926A (en) * | 2017-11-13 | 2018-02-16 | 国网江苏省电力公司电力科学研究院 | A kind of network system protects fast cut back multi-point control time method of testing |
| CN109842202B (en) * | 2017-11-28 | 2020-09-25 | 广东电网有限责任公司电力调度控制中心 | Method for monitoring correctness of switching state of outlet pressing plate of automatic bus transfer device |
| CN109217454A (en) * | 2018-08-09 | 2019-01-15 | 国网浙江省电力有限公司温州供电公司 | A kind of power grid backup auto-activating device distant place automatic start-stop method |
| CN109638972B (en) | 2019-02-01 | 2021-04-30 | 国网江苏省电力有限公司 | Network load interaction control method adaptive to load characteristics, terminal and storage medium |
| CN109742778B (en) * | 2019-03-16 | 2023-05-23 | 德微电技术(深圳)有限公司 | Power load balancing system for low-voltage distribution network |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101673965A (en) * | 2009-10-14 | 2010-03-17 | 华南理工大学 | Automatic switching control method for wide-area emergency power source of electric power system |
| CN101834469A (en) * | 2010-04-16 | 2010-09-15 | 清华大学 | Transformer substation-dispatching center two-stage distribution type restoration control method |
| CN102938587A (en) * | 2012-12-10 | 2013-02-20 | 上海市电力公司 | Intelligent power grid safety and stability early-warning and control method |
| CN102938588A (en) * | 2012-12-10 | 2013-02-20 | 上海市电力公司 | Intelligent power grid safety and stability early-warning and control system |
-
2016
- 2016-09-26 CN CN201610847644.3A patent/CN106340951B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101673965A (en) * | 2009-10-14 | 2010-03-17 | 华南理工大学 | Automatic switching control method for wide-area emergency power source of electric power system |
| CN101834469A (en) * | 2010-04-16 | 2010-09-15 | 清华大学 | Transformer substation-dispatching center two-stage distribution type restoration control method |
| CN102938587A (en) * | 2012-12-10 | 2013-02-20 | 上海市电力公司 | Intelligent power grid safety and stability early-warning and control method |
| CN102938588A (en) * | 2012-12-10 | 2013-02-20 | 上海市电力公司 | Intelligent power grid safety and stability early-warning and control system |
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