CN107394897A - A kind of power distribution network intelligence self-healing method and system based on topological diagram - Google Patents
A kind of power distribution network intelligence self-healing method and system based on topological diagram Download PDFInfo
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- CN107394897A CN107394897A CN201710718880.XA CN201710718880A CN107394897A CN 107394897 A CN107394897 A CN 107394897A CN 201710718880 A CN201710718880 A CN 201710718880A CN 107394897 A CN107394897 A CN 107394897A
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
-
- 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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- 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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
Abstract
The invention discloses a kind of power distribution network intelligence self-healing method based on topological diagram and system, method to comprise the following steps：Step S1, the foundation of network topological diagram；Step S2, the classification of distribution network line；Step S3, the judgement of fault section；Step S4, the processing of failure.System includes distribution main website and with electronic station, and the distribution main website is connected with distribution automation system and being connected with electronic station respectively, described to be connected with electronic station with distribution terminal.The present invention uses the power distribution network intelligence self-healing method based on network topological diagram, the decision rule of distribution network failure section is upgraded by topological graph, so that distribution automation system adapts to the needs of complicated distribution line (i.e. radiant type multipoint line).
Description
Technical field
The present invention relates to distribution network automated technical field, and in particular to a kind of power distribution network intelligence self-healing based on topological diagram
Method and system.
Background technology
With the progress of China's modernization construction, the increasingly increase of all trades and professions power demand, particularly economic development compared with
Fast regional industry and appliance load rise quickly, and distribution system and its controller switching equipment quantity significantly increase, distribution system
Network structure becomes increasingly complex, and powered operation mode changes the effective of stability, regulation more and more frequent, to distribution network operation
Property, fault section judge reliability have higher and higher requirement.Therefore, it is accurate to the fault section of more Complicated Distribution Network
The quick important ring for being treated as power distribution network work when judgement, failure.
All power equipments in regional distribution network are topologized, abstract is the important means of distribution system analysis.Distribution
Automatic technology as lifting distribution system power supply reliability important means extensive use in the world, China with
Start late in terms of electric automation engineering construction, each department development level is also uneven, problems be present, than if any match somebody with somebody
Electric automation is only capable of correctly handling concentrated equipment, and what is had can not correctly coordinate, etc. with demarcation switch.Therefore how research sets
A kind of perfect processing distribution all kinds equipment (concentrated, voltage-type, boundary type) of energy of meter and met all kinds failure are (instantaneous
Property, permanent single-phase earthing or more phase faults) power distribution network intelligence self Healing Technology, realize fault location, isolation, non-faulting section
The Premium Features of self-healing power transmission turn into an extremely important and necessary problem.
The content of the invention
The shortcomings that existing for existing distribution network automated technology, the present invention propose a kind of power distribution network based on topological diagram
Intelligent self-healing method and system.
The present invention solves its technical problem and adopted the technical scheme that：
The present invention provides a kind of power distribution network intelligence self-healing method based on topological diagram, and it comprises the following steps：
Step S1, the foundation of network topological diagram：Distribution network automated system is established according to the order of distribution main website with electronic station
Each circuit and breaker in each circuit in system, disconnecting switch, block switch, the net of interconnection switch and other controller switching equipments
Network topological diagram；
Step S2, the classification of distribution network line：According to the network topological diagram, the distribution main website will be distribution network automated
The various controller switching equipments such as breaker, disconnecting switch, block switch and interconnection switch in system in each circuit are according to topological relation
Classification, multiple-pole switch is divided into from top to bottom, the multiple-pole switch is divided into first order switch from top to bottom, the second level switchs,
Third level switch etc., level arranges downwards successively；
Step S3, the judgement of fault section：When circuit or Distribution Network Equipment break down, by distribution automation system
Distribution terminal detection fault current, distribution main website judges the faulty section of minimum zone according to the level relation in topological relation
Section；
Step S4, the processing of failure：The distribution main website startup separator processing routine, isolated fault point, non-faulting section
Interconnection switch is closed to restore electricity.
Further, the distribution main website is connected by cable network with electronic station, and the electronic station of matching somebody with somebody is by having
Gauze network is connected with distribution terminal, and the distribution main website is responsible for monitoring and management to distribution automation system information, uses
To carry out data acquisition and monitoring to whole power distribution network, the troubleshooting in the range of whole power distribution network is completed, while provide equipment
Management and GIS-Geographic Information System, and power distribution network professional software is provided, to realize that the operation to whole distribution network system controls；It is described
Distribution terminal and distribution main website are connected to electronic station, to manage power distribution station end monitoring device, the signal of distribution terminal is entered
Row is gathered, collected, being uploaded to distribution main website, while the instruction of distribution main website is forwarded to distribution terminal；The distribution terminal is used
To complete data acquisition, the control of switching devices and the detection of failure and identification to primary equipment, have remote measurement, remote signalling,
Remote control, remote regulating and data message transfer function, and fault message is sent to electronic station and distribution main website.
Further, the network topological diagram is used to revise upgrade failure section decision rule, and by the decision rule
The distribution system control algolithm and exception handles of distribution main website are write, makes the power distribution network intelligence self-healing based on topological diagram
Method is applied to handle the failure of various concentrated, voltage-type and boundary type controller switching equipment.The power distribution network based on topological diagram
Intelligent self-healing method can be used for instantaneity, and permanently, single-phase or multiphase various power distribution network power failures are described based on topology
The power distribution network intelligence self-healing method of figure is also realizing the Premium Features of fault location, isolation, non-faulting section self-healing power transmission.
Further, in step s3, the deterministic process of fault section is：Afterbody can be detected into fault current
Circuit is judged to fault section between switch and all switches of next stage that are adjacent thereto and can't detect fault current.
Boundary type equipment can be introduced in the various controller switching equipments of the network topological diagram, can be matched somebody with somebody in every distribution line
There are multiple demarcation switch or demarcation circuit breaker, to ensure that it is smooth that distribution terminal coordinates, accurately identify fault coverage, reduce and have a power failure
Scope.
Further, the distribution terminal includes FTU, DTU and TTU, and FTU is Feeder Terminal Unit, the line feed terminals
Equipment is arranged on by feeder switch, and for being monitored to feeder switch, DTU is switching station terminal equipment, and the switching station is whole
End equipment is at conventional switching station, outdoor small-sized switching station, ring main unit, Small Substation, box-type substation, to complete
Into adopting for the data such as the position signalling of switching devices, voltage, electric current, active power, reactive power, power factor, electric flux
Collection and calculating, it is split to put row breaking-closing operating into, realize the Fault Identification to feeder switch, isolation and to the extensive of non-faulting section
Multiple power supply, part DTU are also equipped with the function of protection and alternate power autocast, and TTU is distribution transformer terminals equipment, and the distribution transforming is whole
End equipment is to monitor and record distribution transformer operating condition, according to low-pressure side three-phase voltage, current sampling data, every 1~2
Minute calculates primary voltage virtual value, current effective value, active power, reactive power, power factor, active energy, idle electricity
The operational factors such as energy.
Further, the network topological diagram obtains after carrying out topological analysis to power distribution network by distribution main website, distribution
The topological analysis of network is according to the annexation of distribution electrical equipment, and whole distribution network is regarded as line and the network of point combination
Topological diagram, the topological line that whole network is then carried out according to power junctions, switch node etc. are analyzed, and topological relation is power distribution network
Network carries out the basis of other analyses such as state estimation, Load flow calculation, fault location, isolation and service restoration, network reconfiguration.
A kind of power distribution network intelligence self-healing system based on topological diagram provided by the invention, it includes distribution main website and with electronics
Stand, the distribution main website is connected with distribution automation system and being connected with electronic station respectively, to distribution network automated
The monitoring and management of system information, and data acquisition and monitoring are carried out to whole power distribution network；It is described whole with distribution with electronic station
End is connected, and to manage power distribution station end monitoring device, and the signal of distribution terminal is acquired, collects, be uploaded to distribution
Main website, while the instruction of distribution main website is forwarded to distribution terminal；The distribution terminal is completing the data to primary equipment
Collection, the control of switching devices and the detection of failure and identification, have remote measurement, remote signalling, remote control, remote regulating and data information transfer
Function, and fault message is sent to electronic station and distribution main website.
Further, the distribution main website is connected by cable network with electronic station, and the electronic station of matching somebody with somebody is by having
Gauze network is connected with distribution terminal.
Further, the distribution terminal includes FTU, DTU and TTU, and FTU is Feeder Terminal Unit, the line feed terminals
Equipment is arranged on by feeder switch, and for being monitored to feeder switch, DTU is switching station terminal equipment, and the switching station is whole
End equipment is at conventional switching station, outdoor small-sized switching station, ring main unit, Small Substation, box-type substation, to complete
Into adopting for the data such as the position signalling of switching devices, voltage, electric current, active power, reactive power, power factor, electric flux
Collection and calculating, it is split to put row breaking-closing operating into, realize the Fault Identification to feeder switch, isolation and to the extensive of non-faulting section
Multiple power supply, part DTU are also equipped with the function of protection and alternate power autocast, and TTU is distribution transformer terminals equipment, and the distribution transforming is whole
End equipment is to monitor and record distribution transformer operating condition, according to low-pressure side three-phase voltage, current sampling data, every 1~2
Minute calculates primary voltage virtual value, current effective value, active power, reactive power, power factor, active energy, idle electricity
The operational factors such as energy.
Further, the primary equipment includes breaker, disconnecting switch, block switch and the contact in distribution network line
Switch.
The beneficial effects of the invention are as follows：
The present invention uses the power distribution network intelligence self-healing method based on network topological diagram, has upgraded power distribution network by topological graph
The decision rule of fault section, so that distribution automation system adapts to complicated distribution line (i.e. radiant type multidrop line
Road) needs.In addition, the present invention contributes to the utilization of boundary type equipment in power distribution network, and it is allowed to smoothly coordinate with main line equipment,
If demarcation switch back segment, which breaks down, to be cut off rapidly, it is safe for operation to avoid having influence on main line, reduce fault outage scope and
Failure inspection scope, improves power distribution rush-repair efficiency and power supply reliability.
The invention provides it is a kind of match with actual motion circuit to handle all kinds failure (instantaneity, permanent
Property single-phase earthing or more phase faults) distribution network automated technology, and can ensure between various equipment (concentrated, voltage-type, point
Boundary's type) correctly coordinate, accurate fault coverage, smoothly realize self-healing.
Brief description of the drawings
Fig. 1 is concentrated distribution automation system troubleshooting schematic diagram in the prior art；
Fig. 2 is flow chart of the method for the present invention；
Fig. 3 is to concentrate boundary type distribution automation system failure to be handled radiant type using the method for the present invention
Schematic diagram.
Embodiment
Describe the embodiment of the present invention in detail below in conjunction with accompanying drawing, following disclosure provides many different realities
The device and method that example is used for realizing the present invention is applied, those skilled in the art is more clearly understood that how to realize the present invention.
In order to simplify disclosure of the invention, hereinafter the part and step of specific examples are described.In addition, the present invention can be not
With repeat reference numerals in example or letter.This repetition is for purposes of simplicity and clarity, itself not indicate to be discussed
Relation between various embodiments or setting.It should be noted that part illustrated in the accompanying drawings is not drawn necessarily to scale.This hair
It is bright to eliminate the description to known assemblies and treatment technology and process to avoid being unnecessarily limiting the present invention.It should be appreciated that to the greatest extent
The pipe present invention describes its preferred embodiment, but these are elaborations to embodiment, rather than limitation is originally
The scope of invention.
For the deficiency of existing distribution network automated technology, specifically using concentrated equipment occur permanent multinomial failure as
Example, the shortcomings that to present in comparative illustration power distribution network existing scheme.As shown in figure 1, CB1, CB2 are band three-step charging
Transformer station 10 kV outgoing line breaker, S1, S2, S3 be circuit 1 three concentrated posts on block switch, S4, S5, S6 are circuit
Block switch on 2 three concentrated posts, L1 interconnection switch (category concentrated on-pole switch, normal places between circuit 1 and circuit 2
In dividing position, switch both sides disconnecting link is closing position).
As shown in figure 1, CB1, CB2 are the transformer station 10 kV outgoing line breaker with three-step charging, S1-S6 is concentration
Type intelligent segmental switchs, L1 interconnection switch (being normally off) between circuit 1 and circuit 2.
When permanent phase fault occurs for F points or during more phase faults, CB1 tripping operations, reclosing failure after 1s (or coincidence is not thrown
Lock, CB1 are maintained at a point position after tripping for the first time), at the same time main website is located at according to each FTU upload informations locking fault section and opened
Between closing S2 and S3, wait main website startup separator processing routine after 30s, send command remote control pull open S2, S3 and locking can not be again
Close a floodgate, isolated fault point.Then main website sends instruction and closes CB1, and the non-faulting section close to mains side recovers power transmission.Finally lead
Station sends instruction and closes L1, and the non-faulting section that will be close to load side recovers power transmission by circuit 2.
From the above-mentioned circuit model provided, it can be deduced that existing Distribution Automation Technology can only solve existing following letters
Single problem：First, circuit model is simple, the circuit in legend is served as theme segmented circuit, is most simple, most basic circuit, real
The distribution line of border operation is radiant type multipoint line mostly；Second, boundary type equipment is not introduced into circuit model, and every
It is furnished with about 4 to 20 demarcation switch in the circuit of actual motion.
In view of the shortcomings of the prior art, the present invention provides a kind of power distribution network intelligence self-healing method based on topological diagram, such as Fig. 2
Shown, it comprises the following steps：
Step S1, the foundation of network topological diagram：Distribution network automated system is established according to the order of distribution main website with electronic station
Each circuit and breaker in each circuit in system, disconnecting switch, block switch, the net of interconnection switch and other controller switching equipments
Network topological diagram；
Step S2, the classification of distribution network line：According to the network topological diagram, the distribution main website will be distribution network automated
The various controller switching equipments such as breaker, disconnecting switch, block switch and interconnection switch in system in each circuit are according to topological relation
Classification, multiple-pole switch is divided into from top to bottom, the multiple-pole switch is divided into first order switch from top to bottom, the second level switchs,
Third level switch etc., level arranges downwards successively；
Step S3, the judgement of fault section：When circuit or Distribution Network Equipment break down, by distribution automation system
Distribution terminal detection fault current, distribution main website judges the faulty section of minimum zone according to the level relation in topological relation
Section；
Step S4, the processing of failure：The distribution main website startup separator processing routine, isolated fault point, non-faulting section
Interconnection switch is closed to restore electricity.
In the above-mentioned methods, the distribution main website is connected by cable network with electronic station, described to lead to electronic station
Cross cable network with distribution terminal to be connected, the distribution main website is responsible for monitoring and pipe to distribution automation system information
Reason, to carry out data acquisition and monitoring to whole power distribution network, the troubleshooting in the range of whole power distribution network is completed, is provided simultaneously
Equipment control and GIS-Geographic Information System, and power distribution network professional software is provided, to realize that the operation to whole distribution network system controls；
It is described to be connected to distribution terminal and distribution main website with electronic station, to manage power distribution station end monitoring device, to the letter of distribution terminal
Number it is acquired, collects, being uploaded to distribution main website, while the instruction of distribution main website is forwarded to distribution terminal；The distribution is whole
End has remote measurement, distant completing data acquisition, the control of switching devices and the detection of failure and the identification to primary equipment
Letter, remote control, remote regulating and data message transfer function, and fault message is sent to electronic station and distribution main website.
In the above-mentioned methods, the network topological diagram is used to revise upgrade failure section decision rule, and by the judgement
The distribution system control algolithm and exception handles of rule write-in distribution main website, make the power distribution network intelligence based on topological diagram
Self-healing method is applied to handle the failure of various concentrated, voltage-type and boundary type controller switching equipment.The matching somebody with somebody based on topological diagram
Power network intelligence self-healing method can be used for instantaneity, and permanently, single-phase or multiphase various power distribution network power failures are described to be based on
The power distribution network intelligence self-healing method of topological diagram is also realizing the advanced work(of fault location, isolation, non-faulting section self-healing power transmission
Energy.
In the above-mentioned methods, in step s3, the deterministic process of fault section is：Afterbody can be detected into failure electricity
Circuit is judged to fault section between the switch of stream and all switches of next stage that are adjacent thereto and can't detect fault current.
In the above-mentioned methods, boundary type equipment can be introduced in the various controller switching equipments of the network topological diagram, matched somebody with somebody at every
Can be furnished with multiple demarcation switch or demarcation circuit breaker in electric line, to ensure that it is smooth that distribution terminal coordinates, accurate identification event
Hinder scope, reduce power failure range.
In the above-mentioned methods, the distribution terminal includes FTU, DTU and TTU, and FTU is Feeder Terminal Unit, the feeder line
Installing terminal equipment is by feeder switch, and for being monitored to feeder switch, DTU is switching station terminal equipment, the opening and closing
Institute's installing terminal equipment is used at the switching station of routine, outdoor small-sized switching station, ring main unit, Small Substation, box-type substation
To complete the data such as the position signalling of switching devices, voltage, electric current, active power, reactive power, power factor, electric flux
Collection and calculating, it is split to put row breaking-closing operating into, realize the Fault Identification to feeder switch, isolation and to non-faulting section
Restore electricity, part DTU be also equipped with protection and alternate power autocast function, TTU is distribution transformer terminals equipment, described to match somebody with somebody
Transformer terminals equipment is to monitor and record distribution transformer operating condition, according to low-pressure side three-phase voltage, current sampling data, every
Calculate primary voltage virtual value, current effective value, active power, reactive power, power factor, active energy, nothing within 1~2 minute
The operational factors such as work(electric energy.
In the above-mentioned methods, the network topological diagram obtains after carrying out topological analysis to power distribution network by distribution main website,
The topological analysis of distribution network is according to the annexation of distribution electrical equipment, and whole distribution network is regarded as what line combined with point
Network topological diagram, the topological line that whole network is then carried out according to power junctions, switch node etc. are analyzed, and topological relation is to match somebody with somebody
Electric network carries out the basis of other analyses such as state estimation, Load flow calculation, fault location, isolation and service restoration, network reconfiguration.
In order to implement the above method, present invention also offers a kind of power distribution network intelligence self-healing system based on topological diagram, it
Including distribution main website and with electronic station, the distribution main website is connected with distribution automation system and being connected with electronic station respectively
Connect, to the monitoring and management to distribution automation system information, and data acquisition and monitoring are carried out to whole power distribution network；
It is described to be connected with electronic station with distribution terminal, to manage power distribution station end monitoring device, and the signal of distribution terminal is carried out
Gather, collect, being uploaded to distribution main website, while the instruction of distribution main website is forwarded to distribution terminal；The distribution terminal to
Data acquisition, the control of switching devices and the detection of failure and identification to primary equipment is completed, there is remote measurement, remote signalling, distant
Control, remote regulating and data message transfer function, and fault message is sent to electronic station and distribution main website.
In said system, the distribution main website is connected by cable network with electronic station, described to lead to electronic station
Cable network is crossed with distribution terminal to be connected.
In said system, the distribution terminal includes FTU, DTU and TTU, and FTU is Feeder Terminal Unit, the feeder line
Installing terminal equipment is by feeder switch, and for being monitored to feeder switch, DTU is switching station terminal equipment, the opening and closing
Institute's installing terminal equipment is used at the switching station of routine, outdoor small-sized switching station, ring main unit, Small Substation, box-type substation
To complete the data such as the position signalling of switching devices, voltage, electric current, active power, reactive power, power factor, electric flux
Collection and calculating, it is split to put row breaking-closing operating into, realize the Fault Identification to feeder switch, isolation and to non-faulting section
Restore electricity, part DTU be also equipped with protection and alternate power autocast function, TTU is distribution transformer terminals equipment, described to match somebody with somebody
Transformer terminals equipment is to monitor and record distribution transformer operating condition, according to low-pressure side three-phase voltage, current sampling data, every
Calculate primary voltage virtual value, current effective value, active power, reactive power, power factor, active energy, nothing within 1~2 minute
The operational factors such as work(electric energy.
In said system, the primary equipment include distribution network line in breaker, disconnecting switch, block switch and
Interconnection switch.
Below so that radiant type concentrates boundary molded line road as an example, the concrete application situation of the present invention is discussed in detail.
Radiant type concentrates boundary type power distribution automation to be event than main line segmented circuit, the complicated part of operation principle
Hinder the decision rule of section, because the presence of branch line, respectively end may be not only two switches to fault section, and some are probably
Three even four, so only have tripping respectively to hold all switches to isolate trouble point.Therefore in radiating tracks, failure
The criterion of section is needed to be modified by the topological relation of equipment room, and afterbody can be detected failure electricity by us herein
Circuit is sentenced between the switch of stream and all switches (these switches should all can't detect fault current) of next stage adjacent thereto
For fault section.
As shown in figure 3, CB1~4 are four transformer station 10 kV outgoing line breakers with three-step charging, (reclosing
In input state), S1~7 are block switch on seven concentrated posts of circuit 1, and F1~6 is on six boundary type posts of circuit 1
Block switch, L1~3 be respectively interconnection switch between circuit 1 and circuit 2,3,4 (category concentrated on-pole switch, it is normal in dividing position,
Switch both sides disconnecting link and closing position).From on topological relation：CB1 switchs for the first order, and S1, S4 switch for the second level, S2, S6,
S5 switchs for the third level, and S3, S7 switch for the fourth stage.
When permanent more phase faults occur for F points, only CB1, S1 two switches can detect fault current, and other switches are equal
Can't detect fault current, and S1 than CB1 will one-level rearward, so main website judge fault section be S1 and S2 adjacent thereto,
Between S6.Therefore when F points break down, CB1 trips, reclosing failure after 1s, main website startup separator processing routine after 30s, sends
S1, S2, S6 are pulled open in command remote control and locking can not close a floodgate again, isolated fault point.Then main website sends instruction and closes CB1, by S1
The non-faulting section (including branch line containing S4, S5) of leading portion recovers power transmission.Last main website successively send command remote control close L1,
L3, the non-faulting section of S2, S6 back segment is recovered into power transmission by circuit 2,4 respectively.
When permanent more phase faults occurring at F ', CB1 tripping operations, F3 is switched because detecting that electric current exceedes quick-break excessively stream definite value
Decompression separating brake immediately, CB1 successful reclosings after 1s, main website not startup separator processing routine.
Using power distribution network intelligence self-healing method of the present invention based on topological diagram, of the invention and existing Distribution Automation Technology
Compare, upgraded fault section decision rule by topological graph, power distribution automation is adapted to complicated distribution line and (radiate
Formula multidrop line circuit) needs.Boundary type equipment is added in model, and is allowed to smoothly coordinate with main line equipment, if boundary
Switch back segment breaks down and can cut off rapidly, and it is safe for operation to avoid having influence on main line, reduces fault outage scope and failure is patrolled
Scope is looked into, power distribution rush-repair efficiency and power supply reliability and the scope of application of electrical power distribution automatization system is improved, improves power distribution network
Intelligence degree.
The invention provides one kind can handle all kinds failure (instantaneity, permanent single-phase earthing or more phase faults)
Distribution network automated technology, and (concentrated, voltage-type, boundary type) correctly cooperation between various equipment, accurate failure can be ensured
Scope, smoothly realize self-healing.
In addition, the application of the present invention is not limited to technique, mechanism, the system of the specific embodiment described in specification
Make, material composition, means, method and step., will be easy as one of ordinary skill in the art from the disclosure
Ground understands, for current technique that is existing or will developing later, mechanism, manufacture, material composition, means, method or
Step, the knot that wherein they perform the method being substantially the same with the corresponding embodiment of the invention described or acquisition is substantially the same
Fruit, they can be applied according to the present invention.Therefore, appended claims of the present invention are intended to these techniques, mechanism, system
Make, material composition, means, method or step are included in its protection domain.
Claims (10)
1. a kind of power distribution network intelligence self-healing method based on topological diagram, it is characterized in that, comprise the following steps：
Step S1, the foundation of network topological diagram：Established with electronic station according to the order of distribution main website in distribution automation system
Each circuit and breaker in each circuit, disconnecting switch, block switch, the network of interconnection switch and other controller switching equipments are opened up
Flutter figure；
Step S2, the classification of distribution network line：According to the network topological diagram, the distribution main website is by distribution automation system
In breaker, disconnecting switch, block switch and interconnection switch in each circuit be classified according to topological relation, divide successively from top to bottom
For multiple-pole switch；
Step S3, the judgement of fault section：When circuit or Distribution Network Equipment break down, by matching somebody with somebody in distribution automation system
Electric terminals detect fault current, and distribution main website judges the fault section of minimum zone according to the level relation in topological relation；
Step S4, the processing of failure：The distribution main website startup separator processing routine, isolated fault point, non-faulting section close
Interconnection switch restores electricity.
2. a kind of power distribution network intelligence self-healing method based on topological diagram according to claim 1, it is characterized in that, the distribution
Main website is connected by cable network with electronic station, described to be connected with electronic station by cable network with distribution terminal, institute
The responsible monitoring and management to distribution automation system information of distribution main website is stated, to carry out data acquisition to whole power distribution network
And monitoring, the troubleshooting in the range of whole power distribution network is completed, while equipment control and GIS-Geographic Information System are provided, and provide and match somebody with somebody
Power network professional software, to realize that the operation to whole distribution network system controls；It is described to be connected to distribution terminal with electronic station and match somebody with somebody
Electric main website, to manage power distribution station end monitoring device, the signal of distribution terminal is acquired, collect, is uploaded to distribution main website,
The instruction of distribution main website is forwarded to distribution terminal simultaneously；The distribution terminal to complete data acquisition to primary equipment,
The control of switching devices and the detection of failure and identification, there is remote measurement, remote signalling, remote control, remote regulating and data message transfer function,
And fault message is sent to electronic station and distribution main website.
3. a kind of power distribution network intelligence self-healing method based on topological diagram according to claim 1, it is characterized in that, the network
Topological diagram is used to revise upgrade failure section decision rule, and the decision rule is write to the distribution system control of distribution main website
Algorithm and exception handles.
4. a kind of power distribution network intelligence self-healing method based on topological diagram according to claim 1, it is characterized in that, in step S3
In, the deterministic process of fault section is：By afterbody can detect fault current switch and it is adjacent thereto and detection not
Fault section is judged to circuit between all switches of next stage of fault current.
5. a kind of power distribution network intelligence self-healing method based on topological diagram according to claim 1, it is characterized in that, the distribution
Terminal includes FTU, DTU and TTU, and FTU is Feeder Terminal Unit, and the Feeder Terminal Unit is arranged on by feeder switch, is used for
Feeder switch is monitored, DTU is switching station terminal equipment, the switching station terminal equipment be arranged on conventional switching station,
Outdoor small-sized switching station, ring main unit, Small Substation, at box-type substation, to complete the position signalling of switching devices, electricity
The collection and calculating of pressure, electric current, active power, reactive power, power factor and electric energy data, it is split to put row divide-shut brake behaviour into
Make, realize the Fault Identification to feeder switch, isolation and non-faulting section is restored electricity, part DTU be also equipped with protection and
The function of alternate power autocast, TTU are distribution transformer terminals equipment, and the distribution transformer terminals equipment becomes to monitor and record distribution
Depressor operating condition, according to low-pressure side three-phase voltage, current sampling data, primary voltage virtual value, electricity were calculated every 1~2 minute
Flow virtual value, active power, reactive power, power factor, active energy and reactive energy operational factor.
6. a kind of power distribution network intelligence self-healing method based on topological diagram according to claim 1, it is characterized in that, the network
Topological diagram obtains after carrying out topological analysis to power distribution network by distribution main website, and the topological analysis of distribution network is according to distribution electricity
The annexation of gas element, whole distribution network is regarded as the network topological diagram that line combines with point, then according to power junctions and
The topological line analysis that node carries out whole network is switched, topological relation is that distribution network carries out state estimation, Load flow calculation, event
Barrier positioning, isolation and service restoration and the basis of network reconfiguration analysis.
7. a kind of power distribution network intelligence self-healing system based on topological diagram, it is characterized in that, including distribution main website and with electronic station, it is described
Distribution main website is connected with distribution automation system and being connected with electronic station respectively, to distribution automation system information
Monitoring and management, and data acquisition and monitoring are carried out to whole power distribution network；It is described to be connected with electronic station with distribution terminal,
To manage power distribution station end monitoring device, and the signal of distribution terminal is acquired, collects, be uploaded to distribution main website, simultaneously
The instruction of distribution main website is forwarded to distribution terminal；The distribution terminal is completing data acquisition to primary equipment, split
The control of equipment and the detection and identification of failure are closed, there is remote measurement, remote signalling, remote control, remote regulating and data message transfer function, and will
Fault message is sent to electronic station and distribution main website.
8. a kind of power distribution network intelligence self-healing system based on topological diagram according to claim 7, it is characterized in that, the distribution
Main website is connected by cable network with electronic station, described to be connected with electronic station by cable network with distribution terminal.
9. a kind of power distribution network intelligence self-healing system based on topological diagram according to claim 7, it is characterized in that, the distribution
Terminal includes FTU, DTU and TTU, and FTU is Feeder Terminal Unit, and the Feeder Terminal Unit is arranged on by feeder switch, is used for
Feeder switch is monitored, DTU is switching station terminal equipment, the switching station terminal equipment be arranged on conventional switching station,
Outdoor small-sized switching station, ring main unit, Small Substation, at box-type substation, to complete the position signalling of switching devices, electricity
The collection and calculating of pressure, electric current, active power, reactive power, power factor and electric energy data, it is split to put row divide-shut brake behaviour into
Make, realize the Fault Identification to feeder switch, isolation and non-faulting section is restored electricity, part DTU be also equipped with protection and
The function of alternate power autocast, TTU are distribution transformer terminals equipment, and the distribution transformer terminals equipment becomes to monitor and record distribution
Depressor operating condition, according to low-pressure side three-phase voltage, current sampling data, primary voltage virtual value, electricity were calculated every 1~2 minute
Flow virtual value, active power, reactive power, power factor, active energy and reactive energy operational factor.
10. a kind of power distribution network intelligence self-healing system based on topological diagram according to claim 7, it is characterized in that, described one
Secondary device includes breaker, disconnecting switch, block switch and the interconnection switch in distribution network line.
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| CN117277592A (en) * | 2023-11-21 | 2023-12-22 | 西安晟昕科技股份有限公司 | Protection switching method for monitoring high-voltage circuit signals |
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