CN106886655A - A kind of improvement minimal path reliability based on distribution geographical topology data determines method - Google Patents
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Abstract
Determine method the invention provides a kind of improvement minimal path reliability based on distribution geographical topology data, specific steps include：First, distribution network reliability index is obtained from GIS, and acquisition constitutes distribution topological data by the primary side component data of power distribution network；Secondly, by analyzing influence of the power supply to the minimum circuit component and bypass elements of user to user dependability respectively, minimal path matrix is created；Then, using minimal path matrix construction methods are improved, equivalent process is carried out to minimal path matrix, and carry out user dependability analysis；Afterwards, it is calculated the quantizating index of the analysis of power distribution network user dependability and systems reliability analysis.This method is done directly distribution network reliability by analyzing generalized information system topological data table and calculates, and optimizes traditional minimal path algorithm flow, reduces that actual power distribution network component kind is more, the huge influence analyzed distribution network reliability of component number.
Description
Technical field
The present invention relates to technical field of power systems, more particularly to a kind of improvement based on distribution geographical topology data is most
Path reliability determines method.
Background technology
Power distribution network is the terminal link for connecting power supply or power transmission network and user, carries and transmits to middle pressure and low pressure electric energy
The vital task of user.But, the addition of power distribution network number of users, the rapid growth of power consumption and new energy is powered energy to power distribution network
Power, power supply reliability propose requirement higher, wherein, fast and effectively ask for the actual distribution network reliability of large-scale complex and refer to
Target algorithm, will have highly important actual application value to the planning construction of power distribution network with operation.But conventional electrical distribution net
Reliability algorithm it is conventional have simulation and analytic method, simulation by assigning the corresponding fault rate of element and fault time, so
Failure is traveled through by setting simulation time afterwards, influence of the different elements failure to distribution network system reliability is calculated.The algorithm pair
There is stronger adaptability in Complicated Distribution Network, but Fault traversal is completed in complication system, then need to consume substantial amounts of emulation meter
Evaluation time；Analytic method obtains customer power supply minimal path and power supply branch road by analyzing the element associated matrix of power distribution network, and will be for
Influence of the electric branch road to user dependability is equivalent onto power supply minimal path, is calculated by the series connection of minimal path of powering and different power supplies
The calculating in parallel of minimal path, the power supply reliability for finally calculating user realizes the quick analysis of power distribution network user dependability,
But because algorithm needs inquiry system connection matrix repeatedly, and the dimension of complication system connection matrix is with the element of power distribution network
Quantitative indicator increases, and algorithm operation needs calculator memory big, and consumes substantial amounts of retrieval time so conventional electrical distribution net reliability
Property algorithm exist to calculate in actual scale complex system and have that the simulation calculation time is long, high to calculator memory requirement ask
Topic.
The content of the invention
It is an object of the invention to overcome the shortcomings of that prior art is present, there is provided a kind of based on distribution geographical topology data
Improve minimal path reliability and determine method.Improvement minimal path reliability based on distribution geographical topology data proposed by the present invention is true
Determine method, efficiently solve traditional analytic method, the calculating time tediously long problem of calculation with imitation method Complicated Distribution Network reliability.The party
Method passes through to simplify GIS topological datas, reduces element range of search using circuit communication relationship, reaches and reduces single retrieval consumption
Time；By exchanging the leading-out terminal of element anode and the numbering of lead-in wire terminal, route search flow is optimized, realize oriented inspection
Rope.The distribution network systems minimal path matrix that this method is proposed builds, minimal path matrix is equivalent, fail-safe analysis calculation process, is root
The reliability of actual complex power distribution network is analyzed according to distribution GIS topological datas, there is provided theory of algorithm and computer optimized integration.Should
Method adapts to the Complicated Distribution Network fail-safe analysis of actual generalized information system, for distribution network reliability As-Is analysis, programme
Reliability evaluation has actual application value.
The present invention is achieved through the following technical solutions.
A kind of improvement minimal path reliability based on distribution geographical topology data determines method, and it comprises the following steps：
(1) distribution network reliability index is obtained from generalized information system；
(2) power distribution network topological data is generated with primary side component data；
(3) minimal path method matrix N is created, and is retrieved since substation bus bar leading-out terminal；
(4) judge whether the distribution net topology has been retrieved to finish：If retrieved finished, step (6) is gone to；It is no
Then, step (5) is gone to；
(5) down search for, row or column is increased toward minimal path and topology information is added, go to step (4), continue to sentence
It is disconnected；
(6) distribution transforming to be analyzed is determined, using distribution transforming numbering as retrieval elements, retrieval contains the minimal path rectangular array of the distribution transforming,
The minimal path rectangular array is referred to as minimal path row, and other are classified as branch's row；
(7) retrieval branch row and the initiator elements of minimal path row difference, the initiator elements are referred to as branch's head elements, according to point
Branch head elements are grouped to branch, delete the element on branch's head element rows and the element under breaker row, will be remaining
Element group be referred to as branch-off element collection；
(8) judge branch-off element collection whether it is determined that finishing：If it is determined that finishing, going to step (14)；It is no
Then, step (9) is gone to；
(9) judge whether branch's head elements are on-load switch：If on-load switch, then step (10) is gone to；Otherwise, turn
To step (11)；
(10) branch head element where element integrate be equivalent to fault rate for each element failure rate sum of element collection, power failure
Recovery time is the minimal path series element of 0.5h, goes to step (8), continues to judge；
(11) judge whether branch's head elements are breaker：If breaker, then step (13) is gone to；Otherwise, go to
Step (12)；
(12) by branch head element equivalent for minimal path series element, and the branch head element where element collection delete
Branch head elements are removed, next line is defined as branch's head elements, go to step (9), continue to judge；
(13) the element collection need not carry out equivalent, go to step (8), continue to judge；
(14) one columns of structure is 2 matrix, and the matrix is cascading algorithm matrix, and two row of matrix are respectively element event
Barrier rate and single failure time.By in two required column data assignment to cascading algorithm matrix；
(15) to user search to different minimal path method matrixes carry out equivalent process, build correspondence cascading algorithm matrix,
And according to user malfunction rateUser's System average interruption durationIn formula：λ (times/year) is user's event
Barrier rate, λi(times/year) is parallel branch fault rate, and γ (hour/time) is user's System average interruption duration, γi(hour/time)
It is parallel branch element System average interruption duration.Operation cascading algorithm respectively obtains wall scroll minimal path power supply reliability index
Further, also including step (16), the equivalent result reference formula user event to different minimal path method matrixes
Barrier rateIn formula：λ1And λ2(times/year) is parallel branch fault rate, γ1And γ2(hour/time) for simultaneously
Connection bypass elements System average interruption duration；User's mean failure rate interruption durationParallel processing is carried out, is obtained
User dependability index.
Further, also system reliability is obtained by different user reliability index statistical analysis including step (17)
Property index.
Compared with prior art, the invention has the advantages that and technique effect：
The method carries out simplifying treatment to GIS topological datas, reduces the component number of retrieval component library, it is to avoid because of unit
Retrieval time is tediously long caused by number of packages mesh is excessive.Due to distribution production it is secondary turn power reguirements, in the absence of substation bus bar to
User turns for operation across what multiple interconnection switches were powered.The method is closed by extracting to exist to get in touch with the affiliated circuit of bus leading-out terminal
The circuit element of system reduces range of search as range of search, reduces algorithm retrieval time.In depth-first retrieval,
Need to confirm whether this element for retrieving occurred as retrieval result repeatedly.The method is adjusted by retrieving
Component data table lead-in wire terminal, leading-out terminal are sequentially, it is determined that the radial pattern retrieval direction from substation bus bar to user, it is ensured that single
Downstream components only occur in the retrieval result of one element, the flow of retrieval is simplified.The method stores minimum in a matrix fashion
Road topological relation, to realize that the determination of equivalent process and power distribution network theory reliability index of minimal path matrix provides basis.
Brief description of the drawings
Fig. 1 is the flow chart that the improvement minimal path reliability based on distribution geographical topology data determines method；
Fig. 2 is that the improvement minimal path reliability based on distribution geographical topology data determines minimal path matrix in method flow diagram
The detail flowchart of establishment；
Fig. 3 is that the distribution network line figure used in case is embodied.
Specific embodiment
Implementation of the invention is described further below in conjunction with accompanying drawing and example, but implementation of the invention and protection domain
Not limited to this.
This computational methods first, obtains distribution network reliability index, and obtain by the primary side of power distribution network from GIS
Component data constitutes distribution topological data；Secondly, by analyzing power supply to minimum circuit component and the branch road unit of user respectively
Influence of the part to user dependability, creates minimal path matrix；Then, using minimal path matrix construction methods are improved, to minimal path
Matrix carries out equivalent process, and carries out user dependability analysis；Afterwards, it is calculated the analysis of power distribution network user dependability and is
The quantizating index of system fail-safe analysis.This method is done directly distribution network reliability meter by analyzing generalized information system topological data table
Calculate, optimize traditional minimal path algorithm flow, reduce that actual power distribution network component kind is more, component number is huge can to power distribution network
By the influence of property analysis
The FB(flow block) of this computational methods is as shown in Figure 1.This computational methods provides one and realizes case, but this method in detail
This case is not limited only to, its detailed step is as follows：
The first step, distribution network reliability index is obtained from generalized information system, and the basic reliability index of acquisition is fault rate
λ (times/year), System average interruption duration γ (hour/time), annual interruption duration U (hour).
Second step, with primary side component data generate power distribution network topological data, and according to city, area, office, institute, stand, line, unit
The structure packet storage of part.
3rd step, builds minimal path matrix N：
1. extract the affiliated feeder line of bus leading-out terminal to be analyzed and there is the feeder line of communication relationship with the feeder line, build zone bit
Part tables of data.
2. minimal path seek footpath using bus leading-out terminal to be analyzed as retrieval starting point, using zone components tables of data as retrieval model
Enclose.
3. algorithm enters units and retrieves successively according to the direction of bus leading-out terminal to distribution transforming, and search key is last layer unit
Part leading-out terminal, range of search is the going out of zone components tables of data element, lead-in wire terminal.
4. in retrieval, if the element leading-out terminal of search key correspondence retrieval result, then replace the element and go out, enter line
End position.If retrieval result has k element to connect, show that downstream direction there are k bar branch roads, prostatitis (the first row to one's own profession) tax will be worked as
It is worth to k-1 blank column below, and is inserting the element number for retrieving when prostatitis and new assignment row successively.As Fig. 3 is produced
In minimal path matrix N, when algorithm is retrieved to element 5, the 3rd row is now corresponded to, retrieval result there are 2 elements：Element 6 and 8, by unit
The column of part 5 (i.e. secondary series) assignment is arranged to the 3rd of blank, and element 6 is inserted into fourth line secondary series, and element 8 inserts the 4th
Row the 3rd is arranged.
5. retrieval downwards, up to that cannot retrieve new element, generates minimal path matrix successively
The each row of matrix represent the supply path with bus 1 as starting point.Such as the 6th row are as starting point, respectively with bus 1
By breaker 2, trolley line 5, breaker 6, trolley line 7, breaker 14, disconnecting switch 15, trolley line 16, with distribution transforming 17 for eventually
The supply path of point.
4th step, is grouped and cancellation treatment to minimal path matrix N：
1. distribution transforming to be analyzed is determined, using distribution transforming numbering as retrieval elements, retrieval contains the minimal path matrix of the distribution transforming.It is minimum
Minimal path row are classified as containing distribution transforming numbering in the matrix of road, other are classified as branch's row.
2. arranged by retrieving branch and recognize branch's head elements with the initiator elements of minimal path row difference, branch arrange according to dividing
Branch head element numbers are grouped.
3. pair each group of branches row, delete the element on each row branch head element rows, delete under breaker row
Element, takes the set of pieces union as branch-off element collection, forms following matrix：
Due to distribution transforming to be analyzed 17 in minimal path matrix the 6th row, therefore the 6th is classified as minimal path row, as above A portions of figure
Point, other are classified as treats equivalent row, is grouped according to the difference with minimal path row branch head elements according to equivalent row, and branch
Layer elements on first element, layer elements are deleted under branch's inner breaker and breaker, obtain B, tetra- parts of C, D, E.
5th step, equivalent process is carried out to matrix, and the influence by branch road to customer power supply is in the way of equivalence element most
Embodied on path：
1. pair different branch-off element collection do following treatment according to branch's head element differences：If branch's head elements are short-circuiting device,
Then the branch-off element collection need not carry out equivalent；If branch's head elements are on-load switch, the element collection is equivalent to fault rate and is
Element integrate each element failure rate sum, the service restoration time as 0.5h minimal path series element；If branch's original paper is other yuan
Part, the element of branch's original paper collection is equivalent to the series element of minimal path successively.
2. pair equivalent rear minimal path matrix is processed, build columns be 2 cascading algorithm matrix, by element failure rate,
Two row of the single failure time assignment to correspondence cascading algorithm matrix.Generate following matrix：
In formula：λi(times/year) is parallel branch fault rate；γi(hour/time) continue for parallel branch element averagely has a power failure
Time.6th step, to user search to different minimal path matrixes carry out equivalent process, build correspondence cascading algorithm matrix, and
According to formulaOperation cascading algorithm respectively obtains wall scroll minimal path power supply reliability index.
7th step, to the equivalent result reference formula of different minimal path matrixes
Parallel processing is carried out, user dependability index is obtained.λ in formula1And λ2(times/year) is parallel branch fault rate, γ1And γ2It is (small
When/time) it is parallel branch element System average interruption duration
8th step, Reliability Index is obtained by different user reliability index statistical analysis.
Claims (3)
1. a kind of improvement minimal path reliability based on distribution geographical topology data determines method, it is characterised in that including following step
Suddenly：
(1) distribution network reliability index is obtained from generalized information system；
(2) power distribution network topological data is generated with primary side component data；
(3) minimal path method matrix N is created, and is retrieved since substation bus bar leading-out terminal；
(4) judge whether the distribution net topology has been retrieved to finish：If retrieved finished, step (6) is gone to；Otherwise,
Go to step (5)；
(5) down search for, row or column is increased toward minimal path and topology information is added, go to step (4), continue to judge；
(6) distribution transforming to be analyzed is determined, using distribution transforming numbering as retrieval elements, retrieval contains the minimal path rectangular array of the distribution transforming, and this is most
Path rectangular array is referred to as minimal path row, and other are classified as branch's row；
(7) initiator elements of retrieval branch row and minimal path row difference, the initiator elements are referred to as branch's head elements, first according to branch
Element is grouped to branch, the element on branch's head element rows and the element under breaker row is deleted, by remaining unit
Part group is referred to as branch-off element collection；
(8) judge branch-off element collection whether it is determined that finishing：If it is determined that finishing, going to step (14)；Otherwise, turn
To step (9)；
(9) judge whether branch's head elements are on-load switch：If on-load switch, then step (10) is gone to；Otherwise, step is gone to
Suddenly (11)；
(10) element where branch head elements integrates that to be equivalent to fault rate be each element failure rate sum of element collection, service restoration
Time is the minimal path series element of 0.5h, goes to step (8), continues to judge；
(11) judge whether branch's head elements are breaker：If breaker, then step (13) is gone to；Otherwise, step is gone to
(12)；
(12) by branch head element equivalent for minimal path series element, and the branch head element where element collection leave out this
Branch's head elements, branch's head elements are defined as by next line, go to step (9), continue to judge；
(13) the element collection need not carry out equivalent, go to step (8), continue to judge；
(14) one columns of structure is 2 matrix, and the matrix is cascading algorithm matrix, and two row of matrix are respectively element failure rate
With the single failure time, by two required column data assignment to cascading algorithm matrix；
(15) to user search to different minimal path method matrixes carry out equivalent process, build correspondence cascading algorithm matrix, and press
According to user malfunction rateUser's System average interruption durationIn formula：λ is user malfunction rate, and unit is
Times/year；λiBe parallel branch fault rate, unit for times/year；γ is user's System average interruption duration, γiIt is parallel branch unit
Part System average interruption duration, unit be hour/time；Operation cascading algorithm respectively obtains wall scroll minimal path power supply reliability and refers to
Mark.
2. a kind of improvement minimal path reliability based on distribution geographical topology data determines method according to claim 1, its
It is characterised by also including step (16), to the equivalent result reference formula user malfunction rate of different minimal path method matrixes In formula：λ1And λ2Be parallel branch fault rate, unit for times/year；γ1And γ2For parallel branch element is flat
Equal interruption duration, unit be hour/time；User's mean failure rate interruption durationParallel processing is carried out, is obtained
To user dependability index.
3. a kind of improvement minimal path reliability based on distribution geographical topology data determines method according to claim 2, its
It is characterised by also including step (17), Reliability Index is obtained by different user reliability index statistical analysis.
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Application publication date: 20170623 |