CN104156534B - The objectification power network topology analysis method generated for black-start scheme - Google Patents
The objectification power network topology analysis method generated for black-start scheme Download PDFInfo
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Abstract
A kind of objectification power network topology analysis method generated for black-start scheme, performance for improving black starting-up DSS, its technical scheme is, methods described regard each plant stand in system as an object, Global Topological analysis is first carried out by elementary cell of each plant stand object, then each plant stand object is considered as a mini system, partial network topology is carried out inside plant stand object, finally integrate the topologies of two levels.The present invention regard each plant stand in system as an object, the topological process of power system is clearly divided into two levels of Global Topological and local topology, not only efficiency high, validity are good for this method, and systematicness is strong, program is realized simple, the restoration path in black starting-up can be conveniently generated, it is adaptable to the topological analysis of large-scale electrical power system.
Description
Technical field
The present invention relates to a kind of method that quickly and accurately can be analyzed power network topology, belong to transmission ＆ distribution power technology
Field.
Background technology
With the trans-regional interconnection of power system, the scale of power network is increasing, influencing each other more between each subsystem
Come stronger, may lead to stopping for large area due to protecting the incorrect operation with automatics when local system breaks down
Electrification, or even disintegrate whole power system collapse, huge loss is brought to national economy.With the expansion of system scale
Greatly, the possibility of occurrence of large-area power outage is also in increase.Therefore the recovery after research power system accident, i.e., " black starting-up "
And associated problem is significant, black starting-up decision support technique is also increasingly subject to the attention of scholar.Power network topology point
Analysis is the basis of black starting-up decision support research, and a perfect and quick topology analyzing method can greatly improve black starting-up and determine
Plan supports the performance of system.
Meanwhile, topological analysis is also the basis that electric system simulation and analysis are calculated, in operation of power networks control and analysis,
Power network topology analysis plays vital effect, can provide basic network for state estimation, Load flow calculation, crash analysis etc.
Structured data.Traditional electric power decorum topology analyzing method is that whole system is considered as into an entirety, and all in system are set
It is standby to carry out Unified number, topological analysis is then carried out, although this method simple, intuitive, is analyzed to large scale system
When efficiency is low, validity is poor.Later, the method for occurring in that hierarchical topology analysis, this method is analyzed to large scale system
When have higher efficiency, but this method systematicness is not strong, and program is realized complicated.It is therefore desirable to design one kind can quickly,
The method analyzed exactly power network topology, is electric system simulation and analysis calculating, black starting-up scheme at initial stage and rack
The generation of restoration path creates favorable conditions in restructuring procedure.
The content of the invention
It is an object of the invention to the drawback for prior art, there is provided a kind of objectification generated for black-start scheme
Power network topology analysis method, improves the performance of black starting-up DSS.
Problem of the present invention is solved with following technical proposals：
A kind of objectification power network topology analysis method generated for black-start scheme, methods described will be each in system
Plant stand first carries out Global Topological analysis, then by each plant stand pair as an object by elementary cell of each plant stand object
As being considered as a mini system, partial network topology is carried out inside plant stand object, finally the topologies of two levels are integrated,
Specifically include the following steps：
A. plant stand class data are set up：The data member of plant stand class includes various equipment, end points, the storage knot of connecting node
Structure and station in adjacency matrix, in addition to initialize first, it is secondary initialization, formed adjacency matrix, topology search with it is whole
The function of body topology interaction member "；
B. each plant stand object is initialized according to the plant stand class set up in step a first：When initializing first, according to system
Data retrieval device, end points, the number of connecting node, are the memory structure storage allocation of equipment, end points, connecting node, and root
The scale of adjacency matrix in station is dynamically determined according to the number of connecting node, if the number of connecting node is in k-th of plant standThen
Adjacency matrix A in k-th of plant stand objectkScale beAll units are " 0 " in juxtaposition matrix；
C. global adjacency matrix A is set up by elementary cell of each plant stand object：A is initially complete zero gust, is institute in system
There is plant stand Unified number, if N is the sum of plant stand in system, the scale of adjacency matrix is N × N, travel through defeated in all systems
Electric line, if circuit k connection plant stand i and plant stand j, put AijAnd AjiFor " 1 "；
D. black starting-up plant stand, black starting-up unit are determined and is activated plant stand, is activated unit；
E. black starting-up plant stand and to be activated plant stand as target, breadth-first search is used to carry out overall topology point
Analysis, obtains a path set comprising plant stand object and circuit between each plant stand：
Path 1：Plant stand 1<Circuit 1>Plant stand 2<Circuit 2>……<Circuit M1>Plant stand M1+1
Path 2：Plant stand 1<Circuit 1>Plant stand 2<Circuit 2>……<Circuit M2>Plant stand M2+1
...,
Wherein<>Interior is line name；
F. secondary initialization is carried out for the plant stand object in path set based on system data information；
G. partial network topology, the station in the path that is restored are carried out using its member function successively for the plant stand on path
Interior part；
H. the result by two hierarchical topology analyses is integrated, and obtains complete topological analysis result, complete topology
The specific form of analysis result is：
Plant stand 1<Circuit 1>Plant stand 2<Circuit 2>……<Circuit M>Plant stand M+1
Plant stand 1：The →... ... of 1 → equipment of equipment 2 → equipment N1
Plant stand 2：The →... ... of 1 → equipment of equipment 2 → equipment N2
…………
Plant stand M+1:The →... ... of 1 → equipment of equipment 2 → equipment NM+1。
The above-mentioned objectification power network topology analysis method generated for black-start scheme, for the plant stand object in path set
Carry out comprising the following steps that for secondary initialization：
1. first plant stand object on acquisition approach collection；
Whether the secondary initialization flag position for 2. judging the object is true, if very to step 5.；Otherwise step is arrived 3.；
3. it is the data of the plant stand object pad device, end points and connecting node：According to system data, in stepb
The data of equipment, end points and connecting node are inserted in the data storage structure for initializing foundation first；
4. according to the adjacency matrix A in the annexation of equipment formation stationk, by the secondary initialization flag in plant stand object
It is set to "true"：The all devices in k-th of plant stand are traveled through, for there are two end equipments of two end points, the two end points necessarily divide
Connecting node i and connecting node j are not connected to, willWithSet, for there is the three terminal device of three end points, and three are held
Point respectively connected connecting node i, connecting node j and connecting node m, willWithPut
“1”；
5. next plant stand object on acquisition approach；
6. path is concentrated all plant stand objects repeat 2. -5..
The above-mentioned objectification power network topology analysis method generated for black-start scheme, it is sharp successively for the plant stand on path
Concretely comprising the following steps for partial network topology is carried out with its member function：
I, route results according to obtained by step e determine the beginning and end that local path is searched in station：It is determined that the interior office in station
During the beginning and end of portion's route searching, for black starting-up plant stand, middle plant stand, it is activated power plant and handles respectively, in black starting-up
To specify generator and wire-outgoing breaker as the beginning and end of local path search in station in plant stand, in middle plant stand,
Using lead-in circuit breaker and wire-outgoing breaker as the beginning and end of local path search in station, in power plant is activated, to enter
The beginning and end that line breaker and specified generator are searched for as local path in station；
II, utilizes factory based on adjacency matrix in the station set up in step f to the beginning and end determined in step I
The member function stood in object carries out local path search, and interior local path search of standing uses dijkstra's algorithm, and search is obtained
Station in path format the following is：The →... ... of 1 → equipment of equipment 2 → equipment N；
III, carries out I-II to all plant stand objects in route result obtained by step e.
The above-mentioned objectification power network topology analysis method generated for black-start scheme, with black starting-up plant stand in step e
It is the overall topological analysis of target progress with plant stand is activated, Depth Priority Algorithm can also be used.
The above-mentioned objectification power network topology analysis method generated for black-start scheme, in step II, carries out interior office of standing
During portion's route searching, Floyd algorithms are used.
The topological process of power system as an object, is clearly divided into the overall situation by each plant stand in system by the present invention
Two levels of topological sum local topology, not only efficiency high, validity are good for this method, and systematicness is strong, and program is realized simply, can
It is conveniently generated the restoration path in black starting-up, it is adaptable to the topological analysis of large-scale electrical power system.
Brief description of the drawings
The invention will be further described below in conjunction with the accompanying drawings.
Fig. 1 is to generate black starting-up Path Method flow chart using objectification power network topology analysis method；
Fig. 2 is the secondary initialization flowchart of plant stand object；
Fig. 3 is that plant stand object carries out partial network topology flow chart.
Embodiment
Referring to Fig. 1, objectification topology analyzing method proposed by the present invention comprises the following steps：
Step 1：Set up plant stand class.Comprising adjacent in various equipment, end points, the memory structure of connecting node and station in plant stand class
The data members such as matrix are connect, also has and initializes first, secondary initialization, formation adjacency matrix, topology search and overall topology are handed over
Mutually wait member function.Wherein the storage of adjacency matrix can be realized using Dynamic Two-dimensional array；
Step 2：Plant stand class according to being set up in step 1 initializes each plant stand object first.When initializing first, according to
System data obtains equipment, end points, the number of connecting node, is the memory structure storage allocation of equipment, end points, connecting node,
And the scale of adjacency matrix in station is dynamically determined according to the number of connecting node, if the number of connecting node is in k-th of plant standThe then adjacency matrix A in k-th of plant stand objectkScale beIn juxtaposition matrix all units be " 0 ", without
Data are wherein inserted, data etc. is inserted and is operated in completion in secondary initialization, the purpose for the arrangement is that needed for reducing initialization
Time, improve efficiency.
Step 3：Global adjacency matrix A is set up by elementary cell of each plant stand object.A is initially complete zero gust, is system
Interior all plant stand Unified numbers, be according to the specific rules that plant stand object and transmission line information set up global adjacency matrix：If N
For the sum of plant stand in system, the scale of adjacency matrix is N × N, that is, sets up N × N two-dimensional array, and wherein N is to be
The sum of plant stand in system, travels through all circuits, if circuit k is connected to plant stand i and plant stand j, by AijAnd AjiSet；
Step 4：Determine black starting-up plant stand, black starting-up unit and be activated plant stand, be activated unit.According to actual power train
The need in black starting-up recovery process of uniting, determine black starting-up plant stand, black starting-up unit and be activated plant stand, be activated unit, its
Middle black starting-up plant stand is generally the plant stand for having the plant stand of self-startup ability or the ability that restored electricity, and is activated plant stand and is treated for dead electricity
The plant stand of reply；
Step 5：Using black starting-up plant stand and it is activated plant stand for target and carries out overall topological analysis, obtains between each plant stand only bag
The path set of object containing plant stand and circuit.According to the black starting-up plant stand determined in the adjacency matrix and step 4 set up in step 3,
It is activated plant stand and carries out route searching, so as to obtain the path set in black starting-up path, when carrying out overall topological analysis, uses range
First search algorithm or Depth Priority Algorithm.Breadth-first search be since black starting-up plant stand, by layer successively to
Outer search, before being scanned for next layer of any node, it is necessary to all nodes of this layer have been searched for, according to power system
7 layers of search, i.e. black starting-up plant stand are carried out with the specific requirement of black-start scheme and are activated the plant stand number between plant stand on path
No more than 7, it is considered as the path that plant stand number is more than 7 and is not present；Depth Priority Algorithm is opened from black starting-up plant stand
Begin, searched for down always by a paths, until searching the ending for being activated plant stand or searching a paths, according to electricity
Search depth is set to 7 by the specific requirement of Force system and black-start scheme, i.e., for black starting-up plant stand and be activated factory between plant stand
Path of the number of standing more than 7, which is considered as, to be not present.Two methods can obtain black starting-up plant stand and be activated plant stand between path
Collection, i.e., all process plant stand numbers are not more than all paths of 7, and different places are：Use a BFS
Algorithm can obtain path set, and can obtain path set using multiple Depth Priority Algorithm.
Obtain the specific form in path as follows：
Path 1：Plant stand 1<Circuit 1>Plant stand 2<Circuit 2>……<Circuit M1>Plant stand M1+1
Path 2：Plant stand 1<Circuit 1>Plant stand 2<Circuit 2>……<Circuit M2>Plant stand M2+1
...,
Wherein<>Interior is line name；
Step 6：Based on system data information secondary initialization is carried out for the plant stand object in path set；Fig. 2 is
The flow chart of the secondary initialization of plant stand object, the secondary initialization of plant stand object comprises the following steps：
Step 61：First plant stand object on acquisition approach collection；
Step 62：Whether the secondary initialization flag position for judging the object is true, if really arriving step 65；Otherwise step is arrived
63；
Step 63：For the plant stand object pad device, end points, the data such as connecting node.According to system data, in step 2
In initialize equipment is inserted in the data storage structure of foundation first, end points, the data such as connecting node；
Step 64：According to adjacency matrix in the annexation of equipment formation station.By the secondary initialization mark in plant stand object
Will position is "true".Adjacency matrix A in standingkSet up in step 2, wherein k represents that the plant stand is k-th of plant stand, forms Ak
When, specific method is：
The all devices in k-th of plant stand are traveled through, for the single-ended equipment of only one of which end points, the starting point in path are only used as
Or terminal, the annexation of network is not influenceed, so need not consider single-ended equipment when setting up adjacency matrix；For there is two end points
Two end equipments, the two end points necessarily respectively connected connecting node i and connecting node j, willWithSet, for having
The three terminal device of three end points, and three end points respectively connected connecting node i, connecting node j and connecting node m, willWithSet；
Step 65：Next plant stand object on acquisition approach；
Step 66：62-65 are repeated until last plant stand object to collecting all plant stand objects in path.
Step 7：Partial network topology is carried out using its member function successively for the plant stand on path, be restored path
Station in part, Fig. 3 is that plant stand object carries out partial network topology flow chart, and plant stand object is carried out under partial network topology includes
Row step：
Step 71：The beginning and end that local path is searched in station is determined according to step 5 gained route result.It is determined that station
During the beginning and end of interior local path search, for black starting-up plant stand, middle plant stand, it is activated power plant and handles respectively, black
Start to specify generator and wire-outgoing breaker as the beginning and end of local path search in station in plant stand, in middle plant stand
In, using lead-in circuit breaker and wire-outgoing breaker as the beginning and end of local path search in station, in power plant is activated, with
The beginning and end that lead-in circuit breaker and specified generator are searched for as local path in station, wherein lead-in circuit breaker and outlet breaks
Road device is determined as the path obtained by overall topology；
Step 72：In the station set up in step 6 based on adjacency matrix, to the beginning and end profit determined in step 71
Local path search is carried out with the member function in plant stand object.The route searching of the part needs not search for outbound path collection, only
The shortest path between beginning and end need to be searched out, interior local path search of standing carries out shortest path using dijkstra's algorithm
Search, dijkstra's algorithm is mainly characterized by centered on starting point outwards extending layer by layer, untill expanding to terminal, the party
Method can draw a shortest path between start node and destination node, i.e., the beginning and end equipment room determined in step 71
Shortest path.Black starting-up decision support system based on the objectification power network topology analysis method generated by black-start scheme
When system is together with other power system Integrated Simulations, other shortest path information in plant stand may be also needed to, at this moment, stand interior
Local path search can use Floyd algorithms to carry out Shortest Path Searching, this method it is main the characteristics of be adjoining in figure
Obtained in matrix with the method on insertion summitIndividual matrix,For the number of connecting node in k-th of plant stand.Last square
The shortest path between all nodes, i.e. shortest path between all devices are contained in battle array, the use of this method can be plant stand
Interior other analyses about shortest path provide convenient.
Path format in obtained station is searched for the following is：The →... ... of 1 → equipment of equipment 2 → equipment N；
Step 73：71-72 are carried out to all plant stand objects in step 5 gained route result；
Step 8：The result of two hierarchical topology analyses is integrated, complete topological analysis result is obtained.By each
Route result in standing is with the connection in Global Topological analysis path result, you can obtain detailed restoration path, completely
The specific form of topological analysis result be：
Plant stand 1<Circuit 1>Plant stand 2<Circuit 2>……<Circuit M>Plant stand M+1
Plant stand 1：The →... ... of 1 → equipment of equipment 2 → equipment N1→ circuit 1
Plant stand 2：The →... ... of 1 → equipment of circuit, 1 → equipment 2 → equipment N2→ circuit 2
…………
Plant stand M+1:Circuit M → the →... ... of 1 → equipment of equipment 2 → equipment NM+1。
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention should not limit to
In this, any one skilled in the art according to the invention discloses core technology, the change that can make or replace
Change, should all be included within the scope of the present invention.
Claims (5)
1. a kind of objectification power network topology analysis method generated for black-start scheme, it is characterized in that, methods described is by system
Interior each plant stand first carries out Global Topological analysis as an object by elementary cell of each plant stand object, then will be every
Individual plant stand object is considered as a mini system, and partial network topology is carried out inside plant stand object, finally by the topology of two levels
As a result integrate, methods described comprises the following steps：
A. plant stand class is set up：The data member of plant stand class includes various equipment, end points, the memory structure of connecting node, Yi Jizhan
Interior adjacency matrix, in addition to initialize first, secondary initialization, the adjacency matrix formed, topology search are handed over overall topology
The function of mutual member "；
B. each plant stand object is initialized according to the plant stand class set up in step a first：When initializing first, according to system data
Equipment, end points, the number of connecting node are obtained, is the memory structure storage allocation of equipment, end points, connecting node, and according to even
The number for connecing node is dynamically determined the scale of adjacency matrix in station, if the number of connecting node is in k-th of plant standThen kth
Adjacency matrix A in individual plant stand objectkScale beAll units are " 0 " in juxtaposition matrix；
C. global adjacency matrix A is set up by elementary cell of each plant stand object：A is initially complete zero gust, is all factories in system
Stand Unified number, if N is the sum of plant stand in system, the scale of adjacency matrix is N × N, travel through power transmission line in all systems
Road, if circuit k connection plant stand i and plant stand j, put AijAnd AjiFor " 1 "；
D. black starting-up plant stand, black starting-up unit are determined and is activated plant stand, is activated unit；
E. black starting-up plant stand and to be activated plant stand as target, overall topological analysis is carried out using breadth-first search, is obtained
Obtain a path set comprising plant stand object and circuit between each plant stand：
Path 1：Plant stand 1<Circuit 1>Plant stand 2<Circuit 2>……<Circuit M1>Plant stand M1+1
Path 2：Plant stand 1<Circuit 1>Plant stand 2<Circuit 2>……<Circuit M2>Plant stand M2+1
……
Wherein<>Interior is line name；
F. secondary initialization is carried out for the plant stand object in path set based on system data information；
G. carried out successively using its member function inside partial network topology, the station in the path that is restored for the plant stand on path
Point；
H. the result by two hierarchical topology analyses is integrated, and obtains complete topological analysis result, complete topological analysis
As a result specific form is：
Plant stand 1<Circuit 1>Plant stand 2<Circuit 2>……<Circuit M>Plant stand M+1
Plant stand 1：The →... ... of 1 → equipment of equipment 2 → equipment N1
Plant stand 2：The →... ... of 1 → equipment of equipment 2 → equipment N2
…………
Plant stand M+1:The →... ... of 1 → equipment of equipment 2 → equipment NM+1。
2. the objectification power network topology analysis method according to claim 1 generated for black-start scheme, it is characterized in that,
Comprising the following steps that for secondary initialization is carried out for the plant stand object in path set：
1. first plant stand object on acquisition approach collection；
Whether the secondary initialization flag position for 2. judging the object is true, if very to step 5.；Otherwise step is arrived 3.；
3. it is the data of the plant stand object pad device, end points and connecting node：According to system data, in stepb first
Initialize the data that equipment, end points and connecting node are inserted in the data storage structure set up；
4. according to the adjacency matrix A in the annexation of equipment formation stationk, the secondary initialization flag in plant stand object is set to
"true"：The all devices in k-th of plant stand are traveled through, for there are two end equipments of two end points, the two end points necessarily connect respectively
Then connecting node i and connecting node j, is incited somebody to actionWithSet, for there is the three terminal device of three end points, and three end points divide
Connecting node i, connecting node j and connecting node m are not connected to, willWithSet；
5. next plant stand object on acquisition approach；
6. path is concentrated all plant stand objects repeat 2. -5..
3. the objectification power network topology analysis method according to claim 1 or 2 generated for black-start scheme, its feature
It is to carry out concretely comprising the following steps for partial network topology using its member function successively for the plant stand on path：
I, route results according to obtained by step e determine the beginning and end that local path is searched in station：It is determined that in station local road
During the beginning and end of path search, for black starting-up plant stand, middle plant stand, it is activated power plant and handles respectively, in black starting-up plant stand
In to specify generator and wire-outgoing breaker as the beginning and end of local path search in station, in middle plant stand, to enter
The beginning and end that line breaker and wire-outgoing breaker are searched for as local path in station, it is disconnected with inlet wire in power plant is activated
The beginning and end that road device and specified generator are searched for as local path in station；
II, utilizes plant stand pair based on adjacency matrix in the station set up in step f to the beginning and end determined in step I
As interior member function progress local path search, interior local path search of standing uses dijkstra's algorithm, searches for obtained station
Interior path format the following is：The →... ... of 1 → equipment of equipment 2 → equipment N；
III, carries out I-II to all plant stand objects in route result obtained by step e.
4. the objectification power network topology analysis method according to claim 3 generated for black-start scheme, it is characterized in that,
In step e using black starting-up plant stand and be activated plant stand for target carry out entirety topological analysis, depth-first can also be used to search
Rope algorithm.
5. the objectification power network topology analysis method according to claim 4 generated for black-start scheme, it is characterized in that,
In step II, progress stand the search of interior local path when, Floyd algorithms can also be used.
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