CN107357988A - Distributed photovoltaic cluster dynamic modelling method based on IEC61850 - Google Patents
Distributed photovoltaic cluster dynamic modelling method based on IEC61850 Download PDFInfo
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F18/00—Pattern recognition
- G06F18/20—Analysing
- G06F18/23—Clustering techniques
- G06F18/231—Hierarchical techniques, i.e. dividing or merging pattern sets so as to obtain a dendrogram
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
- G06Q50/06—Electricity, gas or water supply
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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
- 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
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
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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
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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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
- Y04S10/123—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving renewable energy sources
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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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
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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
- 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
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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
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/128—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment involving the use of Internet protocol
Abstract
The invention discloses a kind of distributed photovoltaic cluster dynamic modelling method based on IEC61850, it is characterized in that, comprise the following steps：1) IEC61850 standard modelings are based on, establish distributed photovoltaic model of element；2) Louvain hierarchical clustering algorithms are based on, carrying out cluster dynamic to all photovoltaic cells in region according to different goals of regulation and control divides；3) according to distributed photovoltaic assemblage classification result, by the photovoltaic cells hierarchical information model aggregation based on IEC61850, cluster ability of regulation and control and topological structure logical node is introduced, establishes final photovoltaic cluster information model.The beneficial effect that the present invention is reached：For the present invention according to different adjusting functions, choice of dynamical participates in the distributed photovoltaic station of cluster, and combines IEC61850 characteristic, modeling is standardized to cluster, the efficient communication between cluster is completed, the stable operation of photo-voltaic power supply is realized, ensures the security management and control of distributed photovoltaic.
Description
Technical field
The present invention relates to a kind of distributed photovoltaic cluster dynamic modelling method based on IEC61850, belong to distributed intelligence
Microgrid field.
Background technology
In recent years, with global energy is in short supply, environmental pollution, climatic deterioration problem it is increasingly serious, greatly developing can be again
The raw energy is as the important energy source strategy in China.Scale distributed photovoltaic power accesses the safe and reliable fortune to following power network
Row proposes challenge, and the safety and stability of local area power network and economical operation are produced significant impact by this.Therefore, it is distributed to promote
Formula power supply further develops, and ensures the safe and stable operation of the whole network, it is necessary to effective management and control is carried out to distributed power source, support,
Service distributed power source access simultaneously, operationally take necessary technology means, operation monitoring scheduling is carried out to distributed power source.
Traditional mode is to use the mould for all distributed photovoltaics in region individually directly control by dispatching of power netwoks
Formula, the requirement to distribution scheduling system and communication is very high, and economy is poor, and control effect is general.At present only in fewer parts
Crimp realized into distributed photovoltaic can monitor, schedulable, and distribution scheduling is not yet formed specifically for distributed photovoltaic application
Special control function.
The content of the invention
To solve the deficiencies in the prior art, it is an object of the invention to provide a kind of distributed photovoltaic based on IEC61850
Cluster dynamic modelling method, with reference to IEC61850 characteristic, modeling is standardized to cluster, completed efficiently logical between cluster
Letter, realizes the stable operation of photo-voltaic power supply, ensures the security management and control of distributed photovoltaic.
In order to realize above-mentioned target, the present invention adopts the following technical scheme that：
A kind of distributed photovoltaic cluster dynamic modelling method based on IEC61850, it is characterized in that, comprise the following steps：
1) IEC61850 standard modelings are based on, abstract decomposition is carried out to distributed photovoltaic function, establishes distributed light
Lie prostrate model of element；
2) Louvain hierarchical clustering algorithms are based on, all photovoltaic cells in region are carried out according to different goals of regulation and control
Cluster dynamic divides, and by distributed photovoltaic assemblage classification is economic control cluster and emergent control collection according to different adjusting functions
Group, economic control cluster to reduce network loss, reduction adjustment cost as target, the factor of consideration including reactive voltage sensitivity, can
Capacitance-adjustable, adjustment cost, emergent control cluster operate to target with voltage security, and the factor of consideration includes active pressure sensitive
Degree, reactive voltage sensitivity, variable capacity, governing speed；
3) according to distributed photovoltaic assemblage classification result, the photovoltaic cells hierarchical information model based on IEC61850 is gathered
Close, introduce cluster ability of regulation and control and topological structure logical node, select corresponding communication service mode, establish final photovoltaic collection
Group's information model.
Further, the particular content of the step 1) is as follows：
11) according to the standard semantic that IEC61850 is defined by function modeling, decompose, by inheriting, deriving from or directly quote
Means obtain instantiation：
Actual distributed photovoltaic network analysis is combined based on IEC61850 standards, in IEC61850-7-4 and
Suitable distributed photovoltaic logical node and data content are chosen in IEC61850-7-420, and is handed over according to the information between them
Mutual relation arranges correct position, and each logical node represents the minimum functional unit of some that to be realized of photovoltaic system.
12) by the instantiation that same level obtains and corresponding operating polymerization, the information model of this level is formed：
According to the function and its demand of photovoltaic cells equipment, 7 logics are established in distributed photovoltaic system server and are set
It is standby, including photovoltaic electric connecting point logical device, photovoltaic cells controller logic equipment, photovoltaic generation logical device, hand over
Direct current transducer logical device, battery system logical device, physics measures logical device and photovoltaic relay protective scheme equipment, more
Individual logical device collectively constitutes the function basis of photovoltaic system；After logical device is abstract, different logical device is distributed respectively
Corresponding logical node is to realize its function；
13) by the information model of different levels and corresponding operating polymerization, obtain final information model and carry out SCL languages
Speech description, the SCL descriptions of photovoltage model include four parts：Part I is top of file, there is provided SCL version informations, photovoltaic system
System version information and configuration tool information, Part II is that messaging parameter describes, including communication subnet, the access for being connected to subnet
Point and address, Part III are data type template, describe the logical node type of instantiation, and Part IV is photovoltage model
Position and ability description, introduce the data set and its function of photovoltaic Layered information model, and photovoltaic cells are in the zone
Network topological location and ability；The photovoltaic ability includes active voltage sensibility, reactive voltage sensitivity, variable capacity, tune
Save cost, governing speed.
Further, the step 2) particular content is：
It is a corporations by each node initializing in network, calculating network corporations similarity Q values will be each in network
Distributed photovoltaic node takes out from original corporations, sequentially adds other corporations, each Q value increments is calculated, if increment is big
In 0, then the node is added to corresponding corporations, updates network Q values, if increment is less than 0, goes to next distributed photovoltaic
Node carries out same operation, until all distributed photovoltaic node iteration are complete in network, obtains final distributed photovoltaic collection
The division result of group.
Further, the calculation of the network community similarity is as follows：
Distance matrix is first asked for according to the otherness between individual, distance matrix is used to represent spatially to deposit between individual
Distance, distance far show that interindividual variation is bigger；
Distance matrix is calculated using Euclidean distance, if individual X and individual Y contain n feature, i.e. X={ x1,
x2,…,xn, Y={ y1,y2,…,yn, use αiThe importance of each feature is represented, then distance between the two can be expressed as
Distance is expressed as similarity, then above formula becomes and turned to：The scope of the value of similarity
In [0,1], represent that individual is more similar closer to 1；
Bring similarity formula intoWherein, SimijFor similarity matrix, matrix
I-th row jth, which arranges, represents i-th of individual and j-th of individual similarity, the company edge degree value sum k in node ii=∑jSimij,
The angle value sum on all even sides of network
, the company edge degree value sum k in node ii=∑jSimij, the angle value sum on all even sides of network
Further, the step 3) comprises the following steps：
Step 31) is based on cluster dynamic division result, polymerize photovoltaic unit information model：
If including n distributed photovoltaic unit in assemblage classification result altogether, n is established in cluster information model server
+ 1 logical device, including n photovoltaic cells equivalent logic equipment and 1 newly-built cluster description logic equipment；
The SCL language description of step 32) renewal cluster information model, description object include photovoltaic cells information model, divided
Ability of regulation and control, the network site based on distributed photovoltaic in cluster and the effect topology knot to cluster network of cloth photovoltaic cluster
Structure；Wherein, the ability of regulation and control of the economic control cluster is cluster internal network loss, active/Reactive-power control cost, emergent control collection
The ability of regulation and control of group is active/Reactive-power control scope；
Step 33) selects the communication service of distributed photovoltaic cluster models；
Further, the particular content of the step 33) is：
Transmit for the instruction between each distributed photovoltaic model of cluster internal, led to using GOOSE message transmission means
Letter；
Transmission for distributed photovoltaic cluster information model data, mapped using WebServices technologies, in number
According to XML is used in expression, SOAP is used on communication mechanism, WSDL is used on service describing, is used on discovery mechanism
UDDI, client program calls use the web services positioned at server after extraneous Web Services api interfaces；
For the information exchange between control centre of main website and cluster models, using communication gate conversion IEC61850 letter
Model data is ceased, 104 messages are received by ethernet communication mode, are then parsed into remote measure and communication information, and these are believed
In breath deposit real-time data base；Definition and model information in IEC61850 standards, 104 stipulations are established to IEC61850
The information model of transfer gateway, the data by the model information being parsed in real-time data base to corresponding transfer gateway model
Object properties are mapped.
The beneficial effect that the present invention is reached：For the present invention according to different adjusting functions, choice of dynamical participates in point of cluster
Cloth photovoltaic station, and IEC61850 characteristic is combined, modeling is standardized to cluster, completes the efficient communication between cluster,
The stable operation of photo-voltaic power supply is realized, ensures the security management and control of distributed photovoltaic.
Brief description of the drawings
Fig. 1 is the information model hierarchical structure figure based on IEC61850；
Fig. 2 is photovoltaic transformer substation system logical node layout；
Fig. 3 is photovoltaic transformer substation system server and logical device modeling figure；
Fig. 4 is the distributed photovoltaic cluster dynamic division flow chart based on corporations；
Fig. 5 is the network topology structure isoboles of distributed photovoltaic assemblage classification；
Fig. 6 is 104 stipulations to the flow path switches of IEC 61850.
Fig. 7 is distributed photovoltaic cluster models schematic diagram.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following examples are only used for clearly illustrating the present invention
Technical scheme, and can not be limited the scope of the invention with this.
It is right due to the conventionally employed pattern for all distributed photovoltaics in region individually directly control by dispatching of power netwoks
The requirement of distribution scheduling system and communication is very high, and economy is poor, and control effect is general, therefore introduces distributed photovoltaic collection team control
Scheme processed.
A kind of distributed photovoltaic cluster dynamic modelling method based on IEC61850 involved in the present invention, including following step
Suddenly：
1) IEC61850 standard modelings are based on, abstract decomposition is carried out to distributed photovoltaic function, establishes distributed light
Lie prostrate model of element.
During the information model based on IEC 61850 is built, the standard semantic that is defined first according to IEC61850
By function modeling, decompose, specific example is obtained by the means such as inheriting, deriving from or directly quote；Secondly same level is obtained
The instantiation arrived and corresponding operation (service) polymerization, form the information model of this level；Finally by the information of different levels
Model and corresponding operating polymerization, obtain final information model and carry out SCL language descriptions.Specific distributed photovoltaic modeling
Step is as follows：
11) according to the standard semantic that IEC61850 is defined by function modeling, decompose, by inheriting, deriving from or directly quote
Means obtain instantiation：
Actual distributed photovoltaic network analysis is combined based on IEC61850 standards, in IEC61850-7-4 and
Suitable distributed photovoltaic logical node and data content are chosen in IEC61850-7-420, and is handed over according to the information between them
Mutual relation arranges correct position, and each logical node represents the minimum functional unit of some that to be realized of photovoltaic system.
12) by the instantiation that same level obtains and corresponding operating polymerization, the information model of this level is formed：
According to the function and its demand of photovoltaic cells equipment, 7 logics are established in distributed photovoltaic system server and are set
It is standby, including photovoltaic electric connecting point logical device, photovoltaic cells controller logic equipment, photovoltaic generation logical device, hand over
Direct current transducer logical device, battery system logical device, physics measures logical device and photovoltaic relay protective scheme equipment, more
Individual logical device collectively constitutes the function basis of photovoltaic system；After logical device is abstract, different logical device is distributed respectively
Corresponding logical node is to realize its function.
13) by the information model of different levels and corresponding operating polymerization, obtain final information model and carry out SCL languages
Speech description, the SCL descriptions of photovoltage model include four parts：Part I is top of file, there is provided SCL version informations, photovoltaic system
System version information and configuration tool information, Part II is that messaging parameter describes, including communication subnet, the access for being connected to subnet
Point and address, Part III are data type template, describe the logical node type of instantiation, and Part IV is photovoltage model
Position and ability description, introduce the data set and its function of photovoltaic Layered information model, and photovoltaic cells are in the zone
Network topological location and ability；The photovoltaic ability includes active voltage sensibility, reactive voltage sensitivity, variable capacity, tune
Save cost, governing speed.
2) Louvain hierarchical clustering algorithms are based on, all photovoltaic cells in region are carried out according to different goals of regulation and control
Cluster dynamic divides, and by distributed photovoltaic assemblage classification is economic control cluster and emergent control collection according to different adjusting functions
Group, economic control cluster to reduce network loss, reduction adjustment cost as target, the factor of consideration including reactive voltage sensitivity, can
Capacitance-adjustable, adjustment cost, emergent control cluster operate to target with voltage security, and the factor of consideration includes active pressure sensitive
Degree, reactive voltage sensitivity, variable capacity, governing speed.
In order to describe the similitude between distributed photovoltaic individual, it is necessary to similarity matrix between establishing individual, it
Value shows more greatly more similar between individual.It is relatively difficult due to directly asking for similarity matrix, so first according to the difference between individual
The opposite sex asks for distance matrix, and distance matrix is used to represent that spatially existing distance, distance far to show individual between individual
Between difference it is bigger.Distance matrix is calculated using Euclidean distance, if individual X and individual Y contain n feature, i.e. X=
{x1,x2,…,xn, Y={ y1,y2,…,yn, use αiThe importance of each feature is represented, then distance between the two can be with table
It is shown as
Distance is expressed as similarity, then above formula becomes and turned to：
The scope of the value of similarity represents that individual is more similar in [0,1], closer 1.
The node each distributed power source in subregion being equivalent in network, the similarity before distributed power source are
Company's edge degree value of network.Exemplified by dividing economic control cluster, economic control cluster be to reduce adjustment cost as target, so
Reactive voltage sensitivity, idle variable capacity and regulation of the distributed power source to pilot bus are considered when establishing similarity matrix
Cost, i.e. distributed power source include 3 features, sensitivity S enq, variable capacity Qadj, adjustment cost Cost.
In order to overcome the bit indicator of different characteristic different, standardization is carried out to characteristic value before calculating.By Senq, Qadj、
Cost substitutes into formula distance matrix：
Wherein, MiThe method of operation of distributed power source is represented, if Mi=Mj, then δ (Mi,Mj)=1, it is otherwise δ (Mi,Mj)
=0.
Bring similarity formula into and ask for similarity matrix, as network connects edge degree value.Utilize the analysis of complex network community
Method carries out the assemblage classification of distributed power source, and the finger for weighing network community structure is above all utilized in corporations' analysis method
Mark Q values judge whether division result is optimal, and the computational methods of the Q values of distributed power source cluster are：
Wherein, SimijFor similarity matrix, i.e. network connects edge degree value, ki=∑jSimij, represent company's edge degree in node i
It is worth sum；Represent the angle value sum on all even sides of network.
Q values based on complex network community, cluster dynamic is carried out using Louvain hierarchical clustering algorithms and divided.By network
In each node initializing be a corporations, calculating network Q values, by each distributed photovoltaic node in network from original society
Taken out in group, sequentially add other corporations, calculate each Q value increments, if increment is more than 0, by corresponding to node addition
Corporations, update network Q values, if increment is less than 0, next distributed photovoltaic node progress same operation gone to, until net
All distributed photovoltaic node iteration are complete in network, obtain the division result of final distributed photovoltaic cluster.
3) the distributed photovoltaic cluster models based on IEC61850 are built：
According to distributed photovoltaic assemblage classification result, by the photovoltaic cells hierarchical information model aggregation based on IEC61850,
Cluster ability of regulation and control and topological structure logical node are introduced, corresponding communication service mode is selected, establishes final photovoltaic cluster
Information model
Step 31) is based on cluster dynamic division result, polymerize photovoltaic unit information model：
If including n distributed photovoltaic unit in assemblage classification result altogether, n is established in cluster information model server
+ 1 logical device, including n photovoltaic cells equivalent logic equipment and 1 newly-built cluster description logic equipment.
Each included in cluster, which is independently distributed formula photovoltaic cells, can be equivalent to a logical device, when cluster needs
To when wherein certain distributed photovoltaic regulates and controls, that is, calling the photovoltaic logical device to realize corresponding function.An in addition, newly-built collection
Group's infologic equipment, DMIN being named as, inside includes two logical nodes of LLN0 and LPHD, wherein, LLN0 statement clusters
The specific ability of regulation and control of shared information, the i.e. cluster, the ability of regulation and control of economic control cluster are cluster internal network loss, active/nothing
Work(adjustment cost, the ability of regulation and control of emergent control cluster is active/Reactive-power control scope, and LPHD states the physical message of cluster,
I.e. the cluster includes the network topology equivalent structure of distributed photovoltaic.
The SCL language description of step 32) renewal cluster information model, description object include photovoltaic cells information model, divided
Ability of regulation and control, the network site based on distributed photovoltaic in cluster and the effect topology knot to cluster network of cloth photovoltaic cluster
Structure；Wherein, the ability of regulation and control of the economic control cluster is cluster internal network loss, active/Reactive-power control cost, emergent control collection
The ability of regulation and control of group is active/Reactive-power control scope；
Step 33) selects the communication service of distributed photovoltaic cluster models；
Transmit for the instruction between each distributed photovoltaic model of cluster internal, led to using GOOSE message transmission means
Letter.
Transmission for distributed photovoltaic cluster information model data, due to general to requirement of real-time, use
WebServices technologies are mapped, and are used XML (extensible markup language) in data expression, are used on communication mechanism
SOAP (Simple Object Access Protocol), WSDL (web service description language) is used on service describing, is used on discovery mechanism
UDDI (universal description, discovery and integrated), client program calls make after extraneous Web Services api interfaces
With the web services positioned at server.
For the information exchange between control centre of main website and cluster models, using communication gate conversion IEC61850 letter
Model data is ceased, 104 messages are received by ethernet communication mode, are then parsed into remote measure and communication information, and these are believed
In breath deposit real-time data base；Definition and model information in IEC61850 standards, 104 stipulations are established to IEC61850
The information model of transfer gateway, the data by the model information being parsed in real-time data base to corresponding transfer gateway model
Object properties are mapped.
The present invention participates in the distributed photovoltaic station of cluster according to different adjusting functions, choice of dynamical, and combines
IEC61850 characteristic, modeling is standardized to cluster, completes the efficient communication between cluster, realize the stable fortune of photo-voltaic power supply
OK, the security management and control of distributed photovoltaic is ensured.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, some improvement and deformation can also be made, these are improved and deformation
Also it should be regarded as protection scope of the present invention.
Claims (6)
1. a kind of distributed photovoltaic cluster dynamic modelling method based on IEC61850, it is characterized in that, comprise the following steps：
1) IEC61850 standard modelings are based on, abstract decomposition is carried out to distributed photovoltaic function, establishes distributed photovoltaic list
Meta-model；
2) Louvain hierarchical clustering algorithms are based on, cluster is carried out to all photovoltaic cells in region according to different goals of regulation and control
Dynamic divides, and by distributed photovoltaic assemblage classification is economic control cluster and emergent control cluster according to different adjusting functions,
For economic control cluster to reduce network loss, reduction adjustment cost as target, the factor of consideration includes reactive voltage sensitivity, Adjustable Capacity
Amount, adjustment cost, emergent control cluster operate to target with voltage security, and the factor of consideration includes active voltage sensibility, nothing
Work(voltage sensibility, variable capacity, governing speed；
3) according to distributed photovoltaic assemblage classification result, the photovoltaic cells hierarchical information model aggregation based on IEC61850 draws
Enter cluster ability of regulation and control and topological structure logical node, select corresponding communication service mode, establish final photovoltaic cluster letter
Cease model.
2. a kind of distributed photovoltaic cluster dynamic modelling method based on IEC61850 according to claim 1, its feature
It is that the particular content of the step 1) is as follows：
11) according to the standard semantic that IEC61850 is defined by function modeling, decompose, by inheriting, deriving from or directly quoting means
Obtain instantiation：
Actual distributed photovoltaic network analysis is combined based on IEC61850 standards, in IEC61850-7-4 and IEC61850-7-
Suitable distributed photovoltaic logical node and data content are chosen in 420, and according to the information exchange relation arrangement between them
Correct position, each logical node represent the minimum functional unit of some that to be realized of photovoltaic system.
12) by the instantiation that same level obtains and corresponding operating polymerization, the information model of this level is formed：
According to the function and its demand of photovoltaic cells equipment, 7 logical device are established in distributed photovoltaic system server, its
Include photovoltaic electric connecting point logical device, photovoltaic cells controller logic equipment, photovoltaic generation logical device, alternating current-direct current turn
Parallel operation logical device, battery system logical device, physics measure logical device and photovoltaic relay protective scheme equipment, multiple logics
Equipment collectively constitutes the function basis of photovoltaic system；After logical device is abstract, different logical device is distributed respectively corresponding
Logical node is to realize its function；
13) by the information model of different levels and corresponding operating polymerization, obtain final information model and carry out SCL language retouching
State, the SCL descriptions of photovoltage model include four parts：Part I is top of file, there is provided SCL version informations, photovoltaic system version
This information and configuration tool information, Part II be messaging parameter description, including communication subnet, be connected to subnet accessing points and
Address, Part III are data type template, describe the logical node type of instantiation, and Part IV is the position of photovoltage model
With ability description, the data set and its function of photovoltaic Layered information model, and the network of photovoltaic cells in the zone are introduced
Topology location and ability；The photovoltaic ability includes active voltage sensibility, reactive voltage sensitivity, variable capacity, is adjusted to
Originally, governing speed.
3. a kind of distributed photovoltaic cluster dynamic modelling method based on IEC61850 according to claim 1, its feature
It is that the step 2) particular content is：
It is a corporations by each node initializing in network, calculating network corporations similarity Q values, will be each distributed in network
Formula photovoltaic node takes out from original corporations, sequentially adds other corporations, calculates each Q value increments, if increment is more than 0,
The node is then added to corresponding corporations, updates network Q values, if increment is less than 0, goes to next distributed photovoltaic node
Same operation is carried out, until all distributed photovoltaic node iteration are complete in network, obtains final distributed photovoltaic cluster
Division result.
4. a kind of distributed photovoltaic cluster dynamic modelling method based on IEC61850 according to claim 3, its feature
It is that the calculation of the network community similarity is as follows：
Distance matrix is first asked for according to the otherness between individual, distance matrix is used to representing spatially existing between individual
Distance, distance far show that interindividual variation is bigger；
Distance matrix is calculated using Euclidean distance, if individual X and individual Y contain n feature, i.e. X={ x1,x2,…,
xn, Y={ y1,y2,…,yn, use αiThe importance of each feature is represented, then distance between the two can be expressed as
Distance is expressed as similarity, then above formula becomes and turned to：The scope of the value of similarity [0,
1], represent that individual is more similar closer to 1；
Bring similarity formula intoWherein, SimijFor similarity matrix, the i-th row of matrix
Jth, which arranges, represents i-th of individual and j-th of individual similarity, the company edge degree value sum k in node ii=∑jSimij, network institute
There is the angle value sum on even side
5. a kind of distributed photovoltaic cluster dynamic modelling method based on IEC61850 according to claim 1, its feature
It is that the step 3) comprises the following steps：
Step 31) is based on cluster dynamic division result, polymerize photovoltaic unit information model：
If including n distributed photovoltaic unit in assemblage classification result altogether, n+1 are established in cluster information model server
Logical device, including n photovoltaic cells equivalent logic equipment and 1 newly-built cluster description logic equipment；
The SCL language description of step 32) renewal cluster information model, description object include photovoltaic cells information model, distribution
The ability of regulation and control of photovoltaic cluster, the network site based on distributed photovoltaic in cluster and the effect topological structure to cluster network；Its
In, the ability of regulation and control of the economic control cluster is cluster internal network loss, active/Reactive-power control cost, emergent control cluster
Ability of regulation and control is active/Reactive-power control scope；
Step 33) selects the communication service of distributed photovoltaic cluster models.
6. a kind of distributed photovoltaic cluster dynamic modelling method based on IEC61850 according to claim 5, its feature
It is that the particular content of the step 33) is：
Transmit for the instruction between each distributed photovoltaic model of cluster internal, communicated using GOOSE message transmission means；
Transmission for distributed photovoltaic cluster information model data, mapped using WebServices technologies, in tables of data
Show and use XML, SOAP is used on communication mechanism, WSDL is used on service describing, UDDI is used on discovery mechanism, visitor
The routine call of family end uses the web services positioned at server after extraneous Web Services api interfaces；
For the information exchange between control centre of main website and cluster models, using communication gate conversion IEC61850 information mould
Type data, 104 messages are received by ethernet communication mode, are then parsed into remote measure and communication information, and these information are deposited
Enter in real-time data base；Definition and model information in IEC61850 standards, establish 104 stipulations and changed to IEC61850
The information model of gateway, the data object by the model information being parsed in real-time data base to corresponding transfer gateway model
Attribute is mapped.
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