CN106169749A - The modeling method of related information topological analysis and system in a kind of power distribution network - Google Patents
The modeling method of related information topological analysis and system in a kind of power distribution network Download PDFInfo
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- CN106169749A CN106169749A CN201610604495.8A CN201610604495A CN106169749A CN 106169749 A CN106169749 A CN 106169749A CN 201610604495 A CN201610604495 A CN 201610604495A CN 106169749 A CN106169749 A CN 106169749A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
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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
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
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Abstract
The present invention relates to modeling method and the system of related information topological analysis in a kind of power distribution network, the method includes: 1) obtain the primary equipment in power distribution network and electrical secondary system information；2) according to primary equipment information, setting up power network topology network model, the node elements of network model includes that electromotor, bus, circuit and transformator, branch's element are switchgear；3) according to electrical secondary system information, in conjunction with described primary equipment information, setting up related information topological network model, the node elements of network model is electrical secondary system logical device, and branch's element is the relation between primary equipment and electrical secondary system logical device.The method of the present invention can simplify the distribution network system information of complexity, fast and effeciently analyzes fault message according to related information topological network, it is ensured that power system stability is run.
Description
Technical field
The present invention relates to technical field of power systems, particularly relate to building of related information topological analysis in a kind of power distribution network
Mould method and system.
Background technology
Modern power distribution systems constantly develops to high degree of flexibility, high source lotus friendly, high intelligent digitalized direction, can be again
Raw energy distributed power supply and the extensive access of electric motor car, the switching of distributed electrical source operating mode flexibly, simultaneously micro-capacitance sensor and
The alternating current-direct current power distribution network degree of depth coupling that the application of DC distribution net causes so that power distribution network becoming increasingly complex of topological structure.Tradition
The distribution protection that single power supply is powered cannot solve the new problem that Fault Identification aspect occurs, and network direction of tide is the most single
One, failed shorted sense of current can not predefine.Traditional relay protection uses off-line setting calculation mode to determine definite value, it is difficult to
Take into account susceptiveness and selective requirement, it is impossible to ensure that definite value is in optimum state all the time.This likely involves power system
Stable, affect the reliable confession of electrical network, the especially operation to power distribution network and bring many restrictions.
At present, intelligent grid realizes intelligentized it is crucial that realize data unified Modeling, it is achieved secondary device and in standing
The Unify legislation of secondary device attribute, ability and behavior, the most just can make the information sharing between different intelligent electrical equipment with mutual
Operation is possibly realized, it is achieved intellectuality truly.And existing wide area protection controls (Integrated Wide Area
Protection and Control IWAPC) system is only to combine primary equipment and electrical secondary system to analyze in power system and occur
Safety problem, data message that system processes or too much, topological structure is the most complicated.
Summary of the invention
The technical problem to be solved in the present invention is to provide the modeling method of related information topological analysis in a kind of power distribution network, uses
In solving the problem that power system network topological model analysis ability is weak.Meanwhile, present invention also offers pass in a kind of power distribution network
The modeling that connection information topology is analyzed.
For solving the problems referred to above, the present invention provides the modeling method of related information topological analysis in a kind of power distribution network, including:
1) primary equipment in power distribution network and electrical secondary system information are obtained；
2) according to primary equipment information, power network topology network model is set up, the node elements bag of power network topology network model
Including electromotor, bus, circuit and transformator, branch's element of power network topology network model is switchgear, power network topology network
The value of branch's element of model represents switchgear state；
3) according to electrical secondary system information, in conjunction with described primary equipment information, related information topological network model is set up, association
The node elements of information topology network model is electrical secondary system logical device, and branch's element of related information topological network model is
Relation between primary equipment and electrical secondary system logical device, the value of branch's element of related information topological network model represents one
Connection status between secondary device and electrical secondary system logical device.
Further, step 1) in from the configuration file SCD of distribution system, obtain the primary equipment and two in power distribution network
Subsystem information.
Further, step 2) in power network topology network model node elements possess two attributes: Type and ID, step 3)
Middle related information topological network model node element has three attributes: Type, ID and secondary device type attribute；Type attribute
In comprise electric pressure information.
Further, step 2) in the switchgear state that represents of the value of branch's element of power network topology network model be: 1
Being that physics closes, 0 is that physics divides；Step 3) in the value of branch's element of related information topological network model represent primary equipment and two
Connection status between subsystem logical device is: 1 is efficient association, and 0 is invalid association.
The present invention also provides for the modeling of related information topological analysis in a kind of power distribution network, and this system includes:
1) for obtaining the primary equipment in power distribution network and the module of electrical secondary system information；
2) for according to primary equipment information, power network topology network model is set up, the node unit of power network topology network model
Element includes electromotor, bus, circuit and transformator, and branch's element of power network topology network model is switchgear, power network topology
The value of branch's element of network model represents the module of switchgear state；
3) for according to electrical secondary system information, in conjunction with described primary equipment information, related information topological network model is set up,
The node elements of related information topological network model is electrical secondary system logical device, the branch element of related information topological network model
Element is the relation between primary equipment and electrical secondary system logical device, the value table of branch's element of related information topological network model
Show the module of connection status between primary equipment and electrical secondary system logical device.
Further, module 1) in from the configuration file SCD of distribution system, obtain the primary equipment and two in power distribution network
Subsystem information.
Further, module 2) in power network topology network model node elements possess two attribute: Type and ID, module 3)
Middle related information topological network model node element has three attributes: Type, ID and secondary device type attribute；Type attribute
In comprise electric pressure information.
Further, module 2) in the switchgear state that represents of the value of branch's element of power network topology network model be: 1
Being that physics closes, 0 is that physics divides；Module 3) in the value of branch's element of related information topological network model represent primary equipment and two
Connection status between subsystem logical device is: 1 is efficient association, and 0 is invalid association.
The modeling method of related information topological analysis in a kind of power distribution network that the present invention proposes, the method is in wide area protection control
In system configuration process processed, the electrical secondary system information and one of information fusion calculation will be participated in based on IEC61850 information-modeling processes
The model interaction of secondary device information, thus obtain related information, obtains two topological networks by this topological modelling approach: electrical network
Topological network and related information topological network.Node class modeling method is used to be able to ensure that in topological network model according to equipment
Attribute information uniquely determines equipment state, secondary device and primary equipment during using branch's class modeling method to make to analyze
Between there is one-to-one relationship.The related information topological network set up by analysis can determine the calculating model of information fusion
Enclose, thus draw suitable analyzed area information according to related information in complicated distribution network topological structure, it is achieved be online
Adaptive locality protection control system information fusion is applied so that system protection controls not only have susceptiveness and has been also equipped with choosing
Selecting property.
Accompanying drawing explanation
Fig. 1 is information model incidence relation figure；
Fig. 2 is electrical network primary connection figure；
Fig. 3 is power network topology basic network figure；
Fig. 4 is power network topology session table；
Fig. 5 is related information and primary equipment relation table.
Detailed description of the invention
Below in conjunction with the accompanying drawings technical scheme is described in detail.
The basic method steps of this technical scheme is:
Step one, the primary equipment obtained in power distribution network and electrical secondary system information；
Step 2, according to primary equipment information, set up power network topology network model, the node of power network topology network model unit
Element includes electromotor, bus, circuit and transformator, and branch's element of power network topology network model is switchgear, power network topology
The value of branch's element of network model represents switchgear state；
Step 3, according to electrical secondary system information, in conjunction with described primary equipment information, set up related information topological network mould
Type, the node elements of related information topological network model is electrical secondary system logical device, dividing of related information topological network model
Zhi Yuansu is the relation between primary equipment and electrical secondary system logical device, branch's element of related information topological network model
Value represents the connection status between primary equipment and electrical secondary system logical device.
The detailed process of above steps is described below:
Step one, the primary equipment obtained in power distribution network and electrical secondary system information.
The engineering of primary equipment and electrical secondary system information model integrated configuration process in power distribution network is as it is shown in figure 1, wide area is protected
Protect control system as one cover multiple transformer stations across station system, need to support further between interior communication application and system
The modeling technique that information is mutual.The IEC 61850 standard second edition proposes, controls information model at wide area protection and carry out system collection
Need during one-tenth to use IEC 61850-90-1 specification to realize interior communication application.Therefore, information mould based on IEC 61850 standard
Type engineer applied method, the system specifications comprising the information model of primary equipment and electrical secondary system respectively is described SSD file and
Ability description ICD file imports to system, forms SCD file, therefore need in follow-up modeling process during integrated configuration
The primary equipment in power distribution network and electrical secondary system information is extracted from SCD file.
Step 2, for obtain related information topological network model firstly the need of analyze primary equipment on-line operation state,
Here from the configuration file SCD of distribution system, obtain the primary equipment in power distribution network, according to primary equipment information, set up electrical network
Topological network model.The node elements of power network topology network model includes electromotor, bus, circuit and transformator, power network topology
Branch's element of network model is switchgear, and the value of branch's element of power network topology network model represents switchgear state.
First the initialization procedure that power network topology network model sets up is the electrical network primary connection figure shown in analysis chart 2, examines
Consider the feasibility to application and ease for use, use the basic abstract model of node class and branch's class to set up power network topology network mould
Type.
Power network topology network node class modeling method is as follows: node elements mainly includes electromotor, bus, circuit and transformation
The primary equipments such as device.Each node elements can extract two from the IEC 61850 information model file SCD of IWAPC system
Attribute for topology model construction: Type and ID, Type attribute represents the type of equipment, is respectively designated as G, B, L, T, ID attribute list
Show the unique encodings of equipment, then node elements name uses attribute synthesis value to be named, and needs stop voltage in node elements
During grade, then Type attribute also comprises electric pressure information.In the present embodiment, bus 1 node is named as B1；In primary equipment
Transformator node need to be limited to same electric pressure, be split into multiple Transformer Winding node, transformation according to electric pressure
Device inherits the ID attribute of transformator around group node, increases the information of electric pressure, three-winding transformer in Type attribute simultaneously
It is defined as TH1, TM1 and TL1.
Power network topology network branches class modeling method is as follows: branch's element is by the connection in primary equipment with on-off action
Constitute after equipment series connection.The connection equipment with on-off action conventional in electrical network is switch (chopper) or disconnecting link, here will
These connection equipment are referred to as switchgear, i.e. branch's element of power network topology network model is switchgear.Branch's element is even
Connecing node elements and form network model, branch's element is used for isolating these node elements and representing all between two node elements
The state set of primary equipment, only has branch's element between two the most adjacent node elements, so power network topology network
Part is only responsible for processing the node elements that the protection primary equipment relevant with controlling function is corresponding.Branch's class is represented by two values
Connection status between node elements: 1 is that physics closes, and 0 is that physics divides.In the present embodiment, typical case's double bus scheme can table in detail
Annexation between timberline road, block switch and sectionalized busbar.
In power network topology network model shown in Fig. 3, transformator is abstracted into TH1, TM1 and TL1 joint respectively according to electric pressure
Point element, is connected by magnetic between three nodes of transformator；Branch's element uses CB name, and wherein, CB11 is one to be had
The special branch of two optional branches, can determine that its end-state after importing on-line operation data.Then, on-line operation topology is divided
Analysis, generates electrical network real-time topology network by real-time network state with power network topology network integration.The present embodiment sets
CB11 with B4 is connected, and draws the real-time topology network connection state table of each electric pressure as shown in Figure 4.
Step 3, for meeting the topological analysis being suitable for region related information, the scope that localization information fusion calculates, it is achieved
Line adaptive locality protection control system information fusion is applied.In IWAPC system information model integrating process, electrical secondary system
Information and primary equipment information, through information association process, produce related information.
From the configuration file SCD of distribution system, obtain electrical secondary system information, in conjunction with described primary equipment information, set up and close
Connection information topology network model, the node elements of related information topological network model is electrical secondary system logical device (Logical
Device LD), branch's element of related information topological network model is the pass between primary equipment and electrical secondary system logical device
System, the value of branch's element of related information topological network model represents the connection between primary equipment and electrical secondary system logical device
State.
Related information topological network node class modeling method is as follows: node elements is two in IEC 61850 information model
Subsystem logical device, logical device is protection and the virtual grate mode controlling function, relative with protected primary equipment
Should.Each node elements can extract from the IEC 61850 information model file SCD of IWAPC system three attribute: Type,
ID attribute and secondary device type attribute, wherein Type and ID attribute is to inherit by protection equipment in power network topology network model
In Type and ID attribute, secondary device type attribute, as an option attribute, is used for distinguishing single primary equipment corresponding
Different Logic equipment, assist in identifying secondary information source.
Related information topological network branch class modeling method is as follows: branch's element is electrical network primary equipment and electrical secondary system is patrolled
Relation between the equipment of collecting, represents that in power network topology network model, protected primary equipment is joined in related information topological network
With the effectiveness of information fusion calculation, i.e. set up between related information topological network and power network topology network set up effectively connect
Connect.Branch's element is carried out the relation between expression information by two values: 1 is efficient association, and 0 is onrelevant relation.
In IWAPC system, the application of information fusion technology is it is generally required to the intermediate object program obtaining each element protection is come real
Now specific Algorithm Analysis, these intermediate object programs, such as impedance and direction, are that the protected object extracted from electric parameters is the most special
Levy component.Therefore, for strengthening the information fusion technology adaptive ability to real-time grid, related information topological network model is set up
It it is exactly the effective connection status needing to find out between related information and real-time grid topological network.The present embodiment is through IEC
61850 information model system integration processes, can derive the related information shown in Fig. 5 and primary equipment relation table, wherein associate
Information topology node elements is LD set contained by virtual secondary equipment in electrical secondary system.Associate when the branch value of branch's element is 1
Information correspondence primary equipment is effective.The LD that node elements is corresponding mostly mates one by one with protection.
The target of IWAPC system information topological analysis based on IEC 61850 is to provide the most certainly for information fusion technology
The input data set adapting to operation of power networks closes, and determines target device associated region network the most online, calculates related information
Range of fusion.
In the present embodiment, it is to arrange and branch into capable principle according to node, the power network topology connection status shown in Fig. 4 is led
Go out to be converted into matrix A, then the topological network matrix B of the associated region electrical network of a certain electric pressure of transformator is calculated as follows:
The power network topology nodes element choosing the representative of certain primary equipment is initial association point, selects in initial matrix B0
Interior joint element is 1, and other node elements are 0.As a example by TH1, initial matrix B0 is:
B0=[0,0,0,0,0,0,0,0,0,0,0,1,0,0]
Institute connecting element set C1 is:
C1=B0*A=[0,0,0,1,1,0,0,0,0,0,0,0]
Then, the power network topology network B 1 calculating this electric pressure is:
B1=C1*AT=[0,0,1,1,0,0,0,0,0,0,0,1,0,0]
Using B1 as the value of new initial matrix B0, repeat above-mentioned calculating process.Until B1 is equal to and B0.Now, B1 is i.e.
Real-time grid topological network matrix B for transformator TH1 side.
Related information shown in Fig. 5 is derived with primary equipment relation and is converted into matrix A ', use the calculating that formula is above-mentioned
Mode, may finally export related information matrix B ':
B '=[1,1,1,1,1,0,0,0,1,1,1,1,0,0]
In like manner, the real-time grid topological network matrix of other electric pressures in Fig. 3 can be calculated, open up for related information
Flutter analytical calculation.
Multi-source information can be realized by data center's platform of IWAPC system to share, can solve such as bus protection 4 He
This many LD of tranformer protection 1 belong to the situation of a secondary device.Being set by protection of most of Fig. 5 interior joint elements correlation
For directly hitting the node elements set shown in Fig. 4.But there is also such as the situation of PCB12 node elements, it is right to protect
As if belong to the switchgear of branch's part.By identifying device attribute and row matrix column element relationship maps, PCB12 node
Branch corresponding to element, through matrix calculus, finally can navigate in the node set shown in Fig. 4.
The embodiment of the present invention additionally provides the modeling of related information topological analysis in a kind of power distribution network.This system bag
Include:
1) for obtaining the primary equipment in power distribution network and the module of electrical secondary system information；
2) for according to primary equipment information, power network topology network model is set up, the node unit of power network topology network model
Element includes electromotor, bus, circuit and transformator, and branch's element of power network topology network model is switchgear, power network topology
The value of branch's element of network model represents the module of switchgear state；
3) for according to electrical secondary system information, in conjunction with described primary equipment information, related information topological network model is set up,
The node elements of related information topological network model is electrical secondary system logical device, the branch element of related information topological network model
Element is the relation between primary equipment and electrical secondary system logical device, the value table of branch's element of related information topological network model
Show the module of connection status between primary equipment and electrical secondary system logical device.
Above-mentioned module is by realizing the functional module that each step of the method is set up in system, a kind of basis
In one of the above power distribution network, the modeling method of related information topological analysis is programmed, and the software corresponding with the method step enters
Journey, in controller.Therefore, for modules, the most no longer describe in detail.
Claims (8)
1. the modeling method of related information topological analysis in a power distribution network, it is characterised in that the method includes:
1) primary equipment in power distribution network and electrical secondary system information are obtained；
2) according to primary equipment information, setting up power network topology network model, the node elements of power network topology network model includes sending out
Motor, bus, circuit and transformator, branch's element of power network topology network model is switchgear, power network topology network model
The value of branch's element represent switchgear state；
3) according to electrical secondary system information, in conjunction with described primary equipment information, related information topological network model, related information are set up
The node elements of topological network model is electrical secondary system logical device, and branch's element of related information topological network model is once
Relation between equipment and electrical secondary system logical device, the value of branch's element of related information topological network model represents and once sets
Connection status between standby and electrical secondary system logical device.
The modeling method of related information topological analysis in a kind of power distribution network the most according to claim 1, it is characterised in that step
Rapid 1) from the configuration file SCD of distribution system, obtain the primary equipment in power distribution network and electrical secondary system information in.
The modeling method of related information topological analysis in a kind of power distribution network the most according to claim 1, it is characterised in that step
Rapid 2) in, power network topology network model node elements possesses two attributes: Type and ID, step 3) in related information topological network
Model node element has three attributes: Type, ID and secondary device type attribute；Type attribute comprises electric pressure letter
Breath.
The modeling method of related information topological analysis in a kind of power distribution network the most according to claim 1, it is characterised in that step
Rapid 2) the switchgear state that in, the value of branch's element of power network topology network model represents is: 1 is that physics closes, and 0 is that physics divides；
Step 3) in the value of branch's element of related information topological network model represent between primary equipment and electrical secondary system logical device
Connection status be: 1 is efficient association, and 0 is invalid association.
5. the modeling of related information topological analysis in a power distribution network, it is characterised in that this system includes:
1) for obtaining the primary equipment in power distribution network and the module of electrical secondary system information；
2) for according to primary equipment information, power network topology network model is set up, the node elements bag of power network topology network model
Including electromotor, bus, circuit and transformator, branch's element of power network topology network model is switchgear, power network topology network
The value of branch's element of model represents the module of switchgear state；
3) for according to electrical secondary system information, in conjunction with described primary equipment information, related information topological network model is set up, association
The node elements of information topology network model is electrical secondary system logical device, and branch's element of related information topological network model is
Relation between primary equipment and electrical secondary system logical device, the value of branch's element of related information topological network model represents one
The module of the connection status between secondary device and electrical secondary system logical device.
The modeling of related information topological analysis in a kind of power distribution network the most according to claim 5, it is characterised in that mould
Block 1) in from the configuration file SCD of distribution system, obtain the primary equipment in power distribution network and electrical secondary system information.
The modeling of related information topological analysis in a kind of power distribution network the most according to claim 5, it is characterised in that mould
Block 2) in power network topology network model node elements possess two attribute: Type and ID, module 3) in related information topological network
Model node element has three attributes: Type, ID and secondary device type attribute；Type attribute comprises electric pressure letter
Breath.
The modeling of related information topological analysis in a kind of power distribution network the most according to claim 5, it is characterised in that mould
Block 2) in the switchgear state that represents of the value of branch's element of power network topology network model be: 1 is that physics closes, and 0 is that physics divides；
Module 3) in the value of branch's element of related information topological network model represent between primary equipment and electrical secondary system logical device
Connection status be: 1 is efficient association, and 0 is invalid association.
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| CN107749620A (en) * | 2017-10-13 | 2018-03-02 | 国网河北能源技术服务有限公司 | A kind of method of service restoration containing distributed power distribution network |
| CN110879913A (en) * | 2019-07-04 | 2020-03-13 | 中国电力科学研究院有限公司 | Heterogeneous grid topology mapping method for offline and online data of power grid |
| CN111695231A (en) * | 2020-04-01 | 2020-09-22 | 华南理工大学 | Practical reliability analysis method for complex power distribution network information physical system |
| CN113051694A (en) * | 2021-03-26 | 2021-06-29 | 南京南瑞信息通信科技有限公司 | Power grid topology modeling method based on graph theory |
| CN113488996A (en) * | 2021-07-02 | 2021-10-08 | 国网湖北省电力有限公司电力科学研究院 | Power distribution network protogram modeling method based on distributed parallel graph computing framework |
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