CN105425105B - Electric network fault line segment synthesized positioning method and system - Google Patents

Electric network fault line segment synthesized positioning method and system Download PDF

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Publication number
CN105425105B
CN105425105B CN201510750960.4A CN201510750960A CN105425105B CN 105425105 B CN105425105 B CN 105425105B CN 201510750960 A CN201510750960 A CN 201510750960A CN 105425105 B CN105425105 B CN 105425105B
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line segment
electric network
network fault
line
segment
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CN105425105A (en
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邢立坤
曾庆辉
李国伟
吴沃生
李新
吴树鸿
罗容波
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Foshan Power Supply Bureau of Guangdong Power Grid Corp
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Foshan Power Supply Bureau of Guangdong Power Grid Corp
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/08—Locating faults in cables, transmission lines, or networks
    • G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
    • G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
    • Y04S10/52—Outage or fault management, e.g. fault detection or location

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Locating Faults (AREA)

Abstract

The present invention relates to a kind of electric network fault synthesized positioning method and systems, processing is weighted to the line segment in various faults line segment respectively first, processing is being merged to each faulted line segment collection after weighting, and the weight of the coincidence line segment between each faulted line segment collection is added up to update the weight for overlapping line segment, and line-segment sets are weighted to obtain resultant fault.Comprehensive analysis is carried out by the various faults line segment to positioning, rather than only single faulted line segment collection is analyzed, line segment concentrates the number occurred more in each faulted line segment, its weight may be bigger, it indicates that when carrying out fault location by a variety of localization methods the line segment can be navigated to, illustrate that the possibility that the line segment is faulted line segment is larger, the weight that resultant fault weights line-segment sets middle conductor is higher, indicate that the possibility that line segment is electric network fault line segment is bigger, the larger line segment of weight selection is as electric network fault line-segment sets from resultant fault weighting line-segment sets, to obtain the higher electric network fault positioning result of precision.

Description

Electric network fault line segment synthesized positioning method and system
Technical field
The present invention relates to electric field, more particularly to a kind of electric network fault line segment synthesized positioning method and system.
Background technology
Electric power is the basis of national economy, most important for a national development, to ensure power system security Effective operation becomes the most important thing, and Modern power distribution net has the characteristics that topological relation is complicated, number of nodes is more and intensive, In actual moving process, can inevitably it be broken down due to external force destruction, extreme weather and ageing equipment etc..In failure After generation, determine that abort situation plays conclusive effect for saving the breakdown repair time as early as possible.Currently, it is commonly used in power grid Fault Locating Method have impedance method, traveling wave method, fault detector positioning, automatic Switching positioning and outlet switch positioning Deng.Wherein fault detector positioning, the positioning of automatic Switching and outlet switch positioning are the degrees of being practical in power grid at present Higher localization method.
A kind of technical solution of existing synthesis one-end fault localization method suitable for distribution network line is melted on stream The synthesis one-end fault localization method of impedance method, frequency domain method and traveling wave method is closed.It composes extraction transient state by signal margin first Primary fault distance is calculated by frequency domain method in traveling wave inherent frequency, is secondly estimated using primary fault distance and power frequency amount Transition resistance determines back wave recognition time window and reflection polarity according to primary fault distance and transition resistance estimation result, Reliable back wave identification is realized on this basis, is finally completed the one-end fault positioning of distribution network line.But the technical side Although the localization method that case is provided is promoted than only using the positioning accuracy of traveling wave method positioning, its positioning accuracy remains unchanged Frequency and sampled signal transmission characteristic by the acquisition of line voltage distribution current data are influenced.Distribution line is larger and structure is multiple Miscellaneous, the cost that oscillograph or other equipment for acquiring high frequency voltage current data are installed in each circuit is higher, it is difficult to The popularization reference for carrying out large area, if the electricity acquired using more universal SCADA system or electric energy quality monitoring system Piezoelectricity flow data, sample frequency determine that it cannot be satisfied the required precision of Distribution Network Failure positioning.
Invention content
Based on this, it is necessary to for the relatively low problem of fault location precision, provide a kind of electricity improving fault location precision Net faulted line segment synthesized positioning method and system.
A kind of electric network fault line segment synthesized positioning method, includes the following steps：
Obtain a variety of electric network fault line segment initial sets；
The faulted line segment of each electric network fault line segment initial set is weighted respectively；
Merge each electric network fault line segment initial set, and the coincidence line between each electric network fault line segment initial set The weight of section is added up to update the weight for overlapping line segment, is obtained resultant fault and is weighted line-segment sets；
The faulted line segment in line-segment sets is weighted to the resultant fault to be ranked up according to weight, obtains the resultant fault The ranking results for weighting line-segment sets choose the faulted line segment of the larger preceding preset quantity of weights in the ranking results, determine electricity Net faulted line segment collection.
The present invention also provides a kind of electric network fault line segment Positioning Systems, including：
Acquisition module, for obtaining a variety of electric network fault line segment initial sets；
Weighting block, for being weighted respectively to the faulted line segment of each electric network fault line segment initial set；
Merging module, for merging each electric network fault line segment initial set, and it is initial to each electric network fault line segment The weight of coincidence line segment between collection is added up to update the weight for overlapping line segment, is obtained resultant fault and is weighted line segment Collection；
First determining module is arranged for weighting the faulted line segment in line-segment sets to the resultant fault according to weight Sequence obtains the ranking results of the resultant fault weighting line-segment sets, chooses the larger preceding present count of weights in the ranking results The faulted line segment of amount determines electric network fault line-segment sets.
Above-mentioned electric network fault line segment synthesized positioning method and system, first respectively to a variety of electric network fault line segment initial sets Faulted line segment be weighted processing, processing is being merged to each electric network fault line segment initial set after weighting, and to each electricity The weight of coincidence line segment between net faulted line segment initial set is added up to update the weight for overlapping line segment, to obtain comprehensive event Barrier weighting line-segment sets, it is initial to a variety of electric network fault line segments of positioning by above-mentioned electric network fault synthesized positioning method and system Collection carries out comprehensive analysis, rather than only analyzes single faulted line segment initial set, and faulted line segment is initial in each faulted line segment Concentrate the number occurred more, weight may be bigger, indicates to determine when carrying out fault location by a variety of localization methods The faulted line segment is arrived in position, illustrates that the possibility that the faulted line segment is electric network fault line segment is larger, resultant fault weights event in line-segment sets The weight for hindering line segment is higher, indicates that the possibility that faulted line segment is electric network fault line segment is bigger, line-segment sets are weighted from resultant fault The larger faulted line segment of middle weight selection is as electric network fault line-segment sets, to obtain the higher electric network fault positioning knot of precision Fruit.
Description of the drawings
Fig. 1 is a kind of flow chart of the electric network fault line segment synthesized positioning method of embodiment；
Fig. 2 is the flow chart of the electric network fault line segment synthesized positioning method of another embodiment；
Fig. 3 is the flow chart of the electric network fault line segment synthesized positioning method of another embodiment；
Fig. 4 is the flow chart of the electric network fault line segment synthesized positioning method of another embodiment；
Fig. 5 is a kind of module map of the electric network fault line segment Positioning System of embodiment；
Fig. 6 is the submodule block diagram of the electric network fault line segment Positioning System of another embodiment；
Fig. 7 is the submodule block diagram of the electric network fault line segment Positioning System of another embodiment；
Fig. 8 is the module map of the electric network fault line segment Positioning System of another embodiment.
Specific implementation mode
Referring to Fig. 1, providing a kind of electric network fault line segment synthesized positioning method of embodiment, include the following steps：
S100：Obtain a variety of electric network fault line segment initial sets.
After grid collapses, determine that abort situation plays decisive role for shortening the breakdown repair time as early as possible, To there are many localization methods of electric network fault, wherein include the localization method of a variety of positioning failure line segments, i.e., occur in power grid therefore When barrier, line segment that determination may break down.Corresponding positioning result can be obtained by each Fault Locating Method, you can obtained A variety of electric network fault line segment initial sets, the set for the line segment that electric network fault line segment initial set breaks down when referring to electric network fault, There may be overlap line segment between these electric network fault line segment initial sets, it is also possible to which there are different faulted line segments.
S200：The faulted line segment of each electric network fault line segment initial set is weighted respectively.
Obtain each electric network fault line segment initial set faulted line segment to determine electric network fault result influence degree when Different, to need to be weighted to the faulted line segment of each electric network fault line segment initial set, the weight of faulted line segment is got over Greatly, indicate that the faulted line segment to determining that the influence degree of electric network fault result is bigger, is more likely to be electric network fault line segment.
S300：Merge each electric network fault line segment initial set, and the coincidence line segment between each electric network fault line segment initial set Weight added up with update overlap line segment weight, obtain resultant fault weight line-segment sets.
It, need to be to initial to each electric network fault line segment after being weighted to the faulted line segment of each electric network fault line segment initial set Collection carries out comprehensive analysis, since there may be coincidence line segments between each electric network fault line segment initial set, to each electric network fault Line segment initial set merges, that is, does union processing, and the weight for overlapping line segment is added up, and the weight after adding up updates The weight of the coincidence line segment is concentrated for the faulted line segment after merging, is obtained resultant fault and is weighted line-segment sets.By above-mentioned merging with And weight update processing so that the weight for overlapping line segment is increasing, and the weight of non-coincidence line segment remains unchanged.
S400：The faulted line segment in line-segment sets is weighted to resultant fault to be ranked up according to weight, is obtained resultant fault and is added The ranking results of line-segment sets are weighed, the faulted line segment of the larger preceding preset quantity of weights in ranking results is chosen, determines electric network fault Line-segment sets.
After carrying out above-mentioned merging and weight update processing to each electric network fault line segment initial set, resultant fault weights line The weight of the faulted line segment of Duan Jizhong determines, overlaps the more line segment of number, and weight is bigger, can more indicate that the line segment is electricity Net faulted line segment is ranked up to weight the line segment in line-segment sets to resultant fault according to weight, and weight is bigger, and sequence is more leaned on Before, it indicates that the possibility that line segment is electric network fault is bigger, it is larger to choose weight in the resultant fault weighting line-segment sets after sequence The line segment of preceding preset quantity is as electric network fault line-segment sets, to can determine electric network fault line segment aggregate, for example, after choosing sequence Resultant fault weighting line-segment sets in larger preceding 10 line segments of weight as electric network fault line-segment sets.In the present embodiment, When first place connects between the faulted line segment in determining electric network fault line-segment sets, then by the faulted line segment in electric network fault line-segment sets Merge into a line segment.
Above-mentioned electric network fault line segment synthesized positioning method, first respectively to the failure of a variety of electric network fault line segment initial sets Line segment is weighted processing, is merging processing to each electric network fault line segment initial set after weighting, and to each electric network fault The weight of coincidence line segment between line segment initial set is added up to update the weight for overlapping line segment, to obtain resultant fault weighting Line-segment sets carry out comprehensive point by above-mentioned electric network fault synthesized positioning method to a variety of electric network fault line segment initial sets of positioning Analysis, rather than only single faulted line segment initial set is analyzed, time that faulted line segment occurs in each faulted line segment initial set Number is more, and weight may be bigger, indicates that when carrying out fault location by a variety of localization methods the fault wire can be navigated to Section illustrates that the possibility that the faulted line segment is electric network fault line segment is larger, and resultant fault weights the weight of faulted line segment in line-segment sets It is higher, indicate faulted line segment be electric network fault line segment possibility it is bigger, from resultant fault weight line-segment sets in weight selection compared with Big faulted line segment is as electric network fault line-segment sets, to obtain the higher electric network fault positioning result of precision.
Referring to Fig. 2, electric network fault line segment initial set includes interval type electric network fault line segment in one of the embodiments, Initial set and endpoint type electric network fault line segment initial set.
The step S100 for obtaining a variety of electric network fault line segment initial sets includes：
S110：Respectively by traveling wave positioning, impedance positioning and fault detector positioning failure is positioned, obtain with Traveling wave position corresponding first electric network fault line segment initial set, the second electric network fault line segment initial set corresponding with impedance positioning with And third electric network fault line segment initial set corresponding with fault detector positioning.
Wherein, the first electric network fault line segment initial set, the second electric network fault line segment initial set and third electric network fault line segment Initial set is interval type electric network fault line segment initial set.
S120：It is positioned respectively by automatic Switching and outlet switch positioning positions failure, obtained and automatic Switching positions corresponding 4th electric network fault line segment initial set and the 5th electric network fault line corresponding with outlet switch positioning Section initial set.
Wherein, the 4th electric network fault line segment initial set and the 5th electric network fault line segment initial set are the event of endpoint type power grid Hinder line segment initial set.
When grid collapses, there are many methods that are positioned to failure, wherein including traveling wave positioning, impedance positioning, Fault detector positioning, the positioning of automatic Switching and outlet switch positioning.The positioning result obtained by these localization methods It is initialization electric network fault line segment, for example, when being positioned to electric network fault by travelling wave positioning method, what is finally obtained determines Position result is exactly to initialize the set of electric network fault line segment, and corresponding electric network fault is obtained by each above-mentioned Fault Locating Method Line segment initial set might have coincidence line segment between each electric network fault line segment initial set, indicate the coincidence line segment both wherein one Kind electric network fault line segment initial set occurs, and also occurs in another electric network fault line segment initial set, or indicate that this is heavy Zygonema section occurs in a variety of electric network fault line segment initial sets, to subsequently do comprehensive point to each electric network fault line segment initial set Analysis, rather than only a kind of electric network fault line segment initial set is analyzed.
Traveling wave is positioned, in topological structure of electric, power grid is made of circuit and node, when certain circuit in power grid When breaking down, fault traveling wave is will produce by starting point of abort situation, is propagated in entire power grid along circuit with the light velocity, In power grid install traveling wave positioning device, when certain line failure, due to recorded by traveling wave positioning device failure when at the beginning of The time that the wave that begins reaches, fault distance between fault point and measurement point can be measured, to can be carried out initialization power grid Faulted line segment positions.
Impedance is positioned, using fault recorder data, the fault bit of circuit is calculated according to impedance variations caused by failure It sets, to can get possible initialization electric network fault line segment.
Fault detector is positioned, fault detector is typically mounted at the intelligence that fault current path is indicated on power network line Energy device, when power network line breaks down, the fault detector on faulty line indicates automatic board turning with red colored lamp The line segment breaks down, to can get initialization electric network fault line segment.
For the positioning of automatic Switching and outlet switch positioning, switched by being arranged, when the grid collapses, switch Action, knows the malfunctioning node in power grid, and all branch lines after node are likely to occur failure, thus as melting automatically Close the initialization electric network fault line segment of positioning and outlet switch positioning.
Referring to Fig. 3, merge each electric network fault line segment initial set in one of the embodiments, and to each electric network fault The weight of coincidence line segment between line segment initial set is added up to update the weight for overlapping line segment, is obtained resultant fault and is weighted line Section collection step S300 include：
S310：Merged two-by-two between interval type electric network fault line segment initial set, and the interval type to mutually merging The weight of coincidence line segment between electric network fault line segment initial set is added, to update the interval type electric network fault mutually merged The weight of coincidence line segment between line segment initial set obtains first and merges weighting line-segment sets.
S320：Merged two-by-two between the point-type electric network fault line segment initial set of opposite end, and the endpoint type to mutually merging The weight of coincidence line segment between electric network fault line segment initial set is added, to update the endpoint type electric network fault mutually merged The weight of coincidence line segment between line segment initial set obtains second and merges weighting line-segment sets.
S330：Merge the first merging weighting line-segment sets and merge weighting line-segment sets with second, and merges weighting line segment to first Collection and second merge weighting line-segment sets between the weight for overlapping line segment be added, with update first merge weighting line-segment sets and Second merges the weight of the coincidence line segment between weighting line-segment sets, obtains resultant fault and weights line-segment sets.
During fault location, since interval type electric network fault line segment initial set and endpoint type electric network fault line segment are initial It is different to integrate as the possibility of electric network fault line segment, to separately be weighted to all types of faulted line segment collection respectively and separate conjunction And then to all types of faulted line segment collection weighting amalgamation result merge, be conducive to all types of faulted line segment collection amalgamation results more Accurately, to make to determine that the accuracy of electric network fault line-segment sets is more preferable.
Specifically, interval type electric network fault line segment initial set includes the first electric network fault line segment initial set, the second power grid Faulted line segment initial set and third electric network fault line segment initial set, step S310 are specifically included：
First electric network fault line segment initial set and the second electric network fault line segment initial set are merged, and to the first power grid The weight for overlapping line segment between faulted line segment initial set and the second electric network fault line segment initial set is added, to update first The weight for overlapping line segment between electric network fault line segment initial set and the second electric network fault line segment initial set, obtaining portion division simultaneously add Weigh line-segment sets.
Merge weighting line-segment sets to part to merge with third electric network fault line segment initial set, and part is merged and is weighted The weight for overlapping line segment between line-segment sets and third electric network fault line segment initial set is added, and with update section division and is weighted The weight for overlapping line segment between line-segment sets and third electric network fault line segment initial set obtains first and merges weighting line-segment sets.
During fault location, first is obtained respectively by traveling wave positioning, impedance positioning and fault detector positioning Electric network fault line segment initial set, the second electric network fault line segment initial set and third electric network fault line segment initial set, three kinds of electricity The faulted line segment of net faulted line segment initial set is expressed as a certain base shaft tower of power network line to the distance range of another base shaft tower, Or the distance range for a certain base shaft tower to measurement point, spatially it is rendered as single line segment.First, by two kinds of faulty lines Collection carries out union processing, and is updated to the weight of coincidence line section, with obtaining portion division and line-segment sets is weighted, in above two After faulted line segment collection merges, then part is merged into weighting line-segment sets and is merged with third initialization power grid kind faulted line segment collection, And weight is updated, merge weighting line-segment sets to obtain first.Above-mentioned merging the first electric network fault line segment initial set, the event of the second power grid The amalgamation result for hindering line segment initial set and third electric network fault line segment initial set is unrelated with merging sequence, can arbitrary arrangement conjunction And for example, after also first the second electric network fault line segment initial set and third electric network fault line segment initial set can be merged again with First electric network fault line segment initial set merges.
Specifically, endpoint type electric network fault line segment initial set includes the 4th electric network fault line segment initial set and the 5th electricity Net faulted line segment initial set, step S320 are specially：
4th electric network fault line segment initial set and the 5th electric network fault line segment initial set are merged, and to the 4th power grid The weight for overlapping line segment between faulted line segment initial set and the 5th electric network fault line segment initial set is added, with update the 4th The weight for overlapping line segment between electric network fault line segment initial set and the 5th electric network fault line segment initial set obtains the second merging and adds Weigh line-segment sets.
During fault location, is positioned by automatic Switching and outlet switch positioning obtains the event of the 4th power grid respectively Hinder line segment initial set and the 5th electric network fault line segment initial set, the fault wire segment table of two kinds of electric network fault line segment initial sets It may be abort situation to be shown as all branch lines after some node in power network line topological diagram, spatially the company of being rendered as Logical line segment.
Faulted line segment collection after above two is merged merges again, and is updated to coincidence line section weight, with It obtains resultant fault and weights line-segment sets, wherein the weight of non-coincidence line segment remains unchanged.Above-mentioned steps S310's and S320 is suitable Sequence can arbitrary arrangement.And specifically to the first electric network fault initial set, the second electric network fault initial set and third power grid initial set Sequence when merging also can arbitrary arrangement.
In the present embodiment, when being weighted respectively to the faulted line segment of each electric network fault line segment initial set, initialization The event of first electric network fault line segment initial set, the second electric network fault line segment initial set and third electric network fault line segment initial set The weight for hindering line segment is 1, initializes the event of the 4th electric network fault line segment initial set and the 5th electric network fault line segment initial set The weight for hindering line segment is 0.5.
During fault location, the first electric network fault line segment initial set, the second electric network fault line segment initial set and Three electric network fault line segment initial sets are obtained by traveling wave positioning, impedance positioning and fault detector positioning respectively, are to belong to In a type of positioning result.4th electric network fault line segment initial set and the 5th electric network fault line segment initial set are logical respectively It crosses automatic Switching positioning and outlet switch positions acquisition, be to belong to a type of positioning result, due to all types of Positioning result is that the possibility of electric network fault line segment is different, to separately be weighted to all types of faulted line segment collection respectively And merging is separated, then all types of weighting amalgamation results is merged, be conducive to all types of faulted line segment collection amalgamation results It is more acurrate, to make to determine that the accuracy of electric network fault line-segment sets is more preferable.
It is carried out according to weight referring to Fig. 4, weighting the line segment in line-segment sets to resultant fault in one of the embodiments, Sequence obtains the ranking results of resultant fault weighting line-segment sets, chooses the event of the larger preceding preset quantity of weights in ranking results Hinder line segment, further includes before determining the step S400 of electric network fault line-segment sets：
S340：When having detected discrete fault point, discrete fault point is compared with resultant fault weighting line-segment sets；
S350：When discrete fault point is fallen on the line segment during resultant fault weights line-segment sets, resultant fault is weighted into line The weights of Duan Jizhong line segments corresponding with discrete fault point add 1.
Discrete fault point is expressed as discontinuous, discrete failure shaft tower, is spatially rendered as discrete point, wherein It is discrete point positioning result, as lightning fault point by the obtained positioning result of lighting location.In electric network fault type, Circuit occupies larger proportion by lightning fault caused by being struck by lightning, as the precision of lightning location system positioning is continuously improved, thunder Electricity positioning can be used as the means of electric network fault positioning accuracy raising.
When power grid is by being struck by lightning, lightning fault is may result in, the lightning stroke by Lightning Location Method to power network line Flashover carry out detection and localization detect discrete fault point when detecting lightning fault point, by discrete fault point with it is above-mentioned comprehensive It closes failure weight line-segment sets to be compared, judges whether discrete fault point falls certain line segment in above-mentioned resultant fault weights line-segment sets On, when judging result be when, by discrete fault point fall above-mentioned resultant fault weighting line-segment sets in discrete fault point pair The weight for the line segment answered adds 1, further, reinforces the possibility that the line segment is electric network fault line segment.
Please continue to refer to Fig. 4, the line segment in line-segment sets is weighted according to weight to resultant fault in one of the embodiments, It is ranked up, obtains the ranking results of resultant fault weighting line-segment sets, choose the preceding preset quantity that weights are larger in ranking results Faulted line segment, determine after the step S400 of electric network fault line-segment sets and further include：
S500：According to the discrete fault point on the line segment fallen in electric network fault line-segment sets, electric network fault point set is determined.
Electric network fault line-segment sets are obtained after being screened to the resultant fault weighting line-segment sets after sequence, that is, are eliminated The line segment that weight is told somebody what one's real intentions are illustrates the discrete fault point if discrete fault point is also fallen on the line segment in electric network fault line-segment sets It is very likely fault point, is filtered out as electric network fault point, if discrete fault point does not fall within electric network fault line-segment sets In line segment on, then the discrete fault point is excluded, it is believed that it is not electric network fault point, and the positioning result of electric network fault is power grid Faulted line segment collection and electric network fault point, the positioning result of electric network fault is exported, and is supplied to repair personnel, repair personnel is according to fixed It is repaired as a result, being quickly found out abort situation position.
Above-mentioned electric network fault line segment synthesized positioning method is illustrated with a specific embodiment below.
First, spatial weighting is carried out to all interval type electric network fault line segment initial sets and asks friendship, merging and staged operation, Obtain the first merging weighting line-segment sets, wherein interval type electric network fault line segment initial set includes that the first electric network fault line segment is initial Collection, the second electric network fault line segment initial set and third electric network fault line segment initial set, but interval type electric network fault line segment is initial Collection is not limited to above-mentioned three kinds of electric network faults line segment initial set, and specific subprocess is as follows：
The weight for initializing the single faulted line segment of all interval type electric network fault line segment initial sets is 1.
Carrying out space to the first electric network fault line segment initial set and the second electric network fault line segment initial set asks friendship to operate, and will weigh Zygonema section is incorporated as independent line segment and weighted value is set as overlapping the sum of the weighted value of line segment, and the first electric network fault line segment is initial Collection and the second electric network fault line segment initial set respectively with overlaps line segment and carries out space and ask poor operating to obtain other line segments, other lines Section keeps weight constant, and coincidence line segment ultimately forms part with other line segments and merges weighting line-segment sets；
Part is merged weighting line-segment sets asks friendship to operate with third electric network fault line segment initial set progress space, by coincidence line Section is incorporated as independent line segment and weighted value is set as overlapping the sum of the weighted value of line segment, and part is merged weighting line-segment sets and third Electric network fault line segment initial set respectively with overlap line segment carry out respectively space ask difference operation to obtain other line segments, other line segments protect It is constant to hold weight, other line segments of the coincidence line segment and this ultimately form first and merge weighting line-segment sets.
At the beginning of interval type electric network fault line segment initial set faulted line segment collection comprises more than above-mentioned three kinds of electric network fault line segments When initial set, then merge weighting line-segment sets by first and merged with next electric network fault line segment initial set, and updates weighted value, It obtains new first and merges weighting line-segment sets, repeat the step, until all electric network fault line segment initial sets have both participated in conjunction And it calculates.
When interval type electric network fault line segment initial set only exists an electric network fault line segment initial set, directly this is added Electric network fault line segment initial set after power is exported as positioning result.When interval type electric network fault line segment initial set only exists two When a electric network fault line segment initial set, space is carried out to two electric network fault line segment initial sets, friendship is asked to operate, line segment will be overlapped and closed And be set as overlapping the sum of the weighted value of line segment as independent line segment and weighted value, by two electric network fault line segment initial sets respectively with Overlapping line segment progress space asks difference operation to obtain other line segments, other line segments keep weight constant, overlap line segment and other lines Section ultimately forms positioning result output.
The sequence nothing of the above-mentioned joint account to interval type electric network fault line segment initial set electric network fault line segment initial set It closes, it can be in any permutation.
Then, spatial weighting is carried out to all endpoint type electric network fault line segment initial sets and asks friendship, merging and staged operation, Obtain extreme result weighting line-segment sets, wherein endpoint type electric network fault line segment initial set includes that the 4th electric network fault line segment is initial Collection and the 5th electric network fault line segment initial set, but endpoint type electric network fault line segment initial set is not limited to above two electric network fault Line segment initial set, specific subprocess are as follows：
The weight for initializing the connection line segment of all endpoint type electric network fault line segment initial sets is 0.5.
Carrying out space to the 4th electric network fault line segment initial set and the 5th electric network fault line segment initial set asks friendship to operate, and will weigh Zygonema section is incorporated as the sum of the weight that independent line segment and weighted value are coincidence line section, by the 4th electric network fault line segment initial set and 5th electric network fault line segment initial set respectively with overlap line segment carry out space ask difference operation to obtain other line segments, other line segments protect It is constant to hold weight, ultimately forms the second merging weighting line-segment sets.
If endpoint type electric network fault line segment initial set, will be above-mentioned there are three or more electric network fault line segment initial sets Second merges weighting line-segment sets asks friendship to operate with next electric network fault line segment initial set progress space, it would be possible to existing each The sum of the weight that line segment is incorporated as independent line segment and weighted value is coincidence line section is overlapped, second is merged and weights line-segment sets under One electric network fault line segment initial set respectively with it is each overlap line segment carry out respectively space ask difference operation to obtain other line segments, He keeps weight constant by line segment, ultimately forms new second and merges weighting line-segment sets.The step is repeated, until all power grid events Barrier line segment initial set has both participated in joint account.
When endpoint type electric network fault line segment initial set only exists an electric network fault line segment initial set, directly returning should Electric network fault line-segment sets after weighting are as positioning result.
The sequence nothing of the joint account of above-mentioned opposite end point-type electric network fault line segment initial set electric network fault line segment initial set It closes, it can be in any permutation.It is all to be represented by interval type positioning result and end with the fault location result that line segment indicates Point-type positioning result.
Finally, merge first and merge weighting line-segment sets and the second merging weight-sets, obtain resultant fault weighting line-segment sets, tool Body flow is as follows：
Merge weighting line-segment sets by first and the second merging weighting line-segment sets carry out space and ask friendship operation, it would be possible to is existing It is each to overlap the sum of the weighted value that line segment is incorporated as independent line segment and weighted value is coincidence line road, first is merged and weights line segment Collection and the second merging weighting line-segment sets ask difference operation to obtain other line segments with each line segment progress space that overlaps respectively, other lines Section keeps weight constant, according to line segment and other line segments are overlapped, obtains resultant fault weighting line-segment sets.
When there are discrete fault point, all offline fault points and resultant fault weighting line-segment sets are compared, when from Fault point is dissipated when resultant fault weights in line-segment sets on certain line segment, which is added 1, update resultant fault weighting The weight of line-segment sets middle conductor, while preserving the incidence relation of the line segment and discrete fault point.Wherein, discrete fault point includes thunder Electric fault point, but it is not limited to lightning fault point, it is all to be represented by discrete failure with the fault location result indicated Point.
The line segment in line-segment sets is weighted to resultant fault to be ranked up according to its weight, chooses one or more weighted values most High line segment is merged into a line segment if there is a situation where end to end between the highest line segment of multiple weighted values, Finally obtain electric network fault line-segment sets.
According to the discrete fault point on the line segment fallen in electric network fault line-segment sets, electric network fault point set is determined.
It returns and exports electric network fault line-segment sets and electric network fault point set, when there is no discrete fault point, electric network fault Point set is empty set.
When only existing the first merging weighting line-segment sets, it is defeated as electric network fault line-segment sets to merge weighting line-segment sets using first Go out.
When only existing the second merging weighting line-segment sets, it is defeated as electric network fault line-segment sets to merge weighting line-segment sets using second Go out.
The electric network fault synthesized positioning method that this specific embodiment provides is positioned using the existing all kinds of electric network faults of power grid The existing positioning result of method, in the case where not adding equipment, not changing its original system structure and positioning method, by right All kinds of positioning results carry out spatial overlay analysis, to achieve the purpose that improve electric network fault positioning accuracy.
Referring to Fig. 5, the present invention also provides a kind of electric network fault line segment Positioning Systems of embodiment, including：
Acquisition module 100, for obtaining a variety of electric network fault line segment initial sets.
After grid collapses, determine that abort situation plays decisive role for shortening the breakdown repair time as early as possible, To there are many localization methods of electric network fault, wherein include the localization method of a variety of positioning failure line segments, i.e., occur in power grid therefore When barrier, line segment that determination may break down.Corresponding positioning result can be obtained by each Fault Locating Method, you can obtained A variety of electric network fault line segment initial sets, the set for the line segment that electric network fault line segment initial set breaks down when referring to electric network fault, There may be overlap line segment between these electric network fault line segment initial sets, it is also possible to which there are different faulted line segments.
Weighting block 200, for being weighted respectively to the faulted line segment of each electric network fault line segment initial set.
Obtain each electric network fault line segment initial set faulted line segment to determine electric network fault result influence degree when Different, to need to be weighted to the faulted line segment of each electric network fault line segment initial set, the weight of faulted line segment is got over Greatly, indicate that the faulted line segment to determining that the influence degree of electric network fault result is bigger, is more likely to be electric network fault line segment.
Merging module 300, for merging each electric network fault line segment initial set, and between each electric network fault line segment initial set Coincidence line segment weight added up with update overlap line segment weight, obtain resultant fault weight line-segment sets.
It, need to be to initial to each electric network fault line segment after being weighted to the faulted line segment of each electric network fault line segment initial set Collection carries out comprehensive analysis, since there may be coincidence line segments between each electric network fault line segment initial set, to each electric network fault Line segment initial set merges, that is, does union processing, and the weight for overlapping line segment is added up, and the weight after adding up updates The weight of the coincidence line segment is concentrated for the faulted line segment after merging, is obtained resultant fault and is weighted line-segment sets.By above-mentioned merging with And weight update processing so that the weight for overlapping line segment is increasing, and the weight of non-coincidence line segment remains unchanged.
First determining module 400 is ranked up for weighting the faulted line segment in line-segment sets to resultant fault according to weight, The ranking results for obtaining resultant fault weighting line-segment sets, choose the fault wire of the larger preceding preset quantity of weights in ranking results Section, determines electric network fault line-segment sets.
After carrying out above-mentioned merging and weight update processing to each electric network fault line segment initial set, resultant fault weights line The weight of the faulted line segment of Duan Jizhong determines, overlaps the more line segment of number, and weight is bigger, can more indicate that the line segment is electricity Net faulted line segment is ranked up to weight the line segment in line-segment sets to resultant fault according to weight, and weight is bigger, and sequence is more leaned on Before, it indicates that the possibility that line segment is electric network fault is bigger, it is larger to choose weight in the resultant fault weighting line-segment sets after sequence The line segment of preceding preset quantity is as electric network fault line-segment sets, to can determine electric network fault line segment aggregate, for example, after choosing sequence Resultant fault weighting line-segment sets in larger preceding 10 line segments of weight as electric network fault line-segment sets.In the present embodiment, When first place connects between the faulted line segment in determining electric network fault line-segment sets, then by the faulted line segment in electric network fault line-segment sets Merge into a line segment.
Above-mentioned electric network fault line segment Positioning System, first respectively to the failure of a variety of electric network fault line segment initial sets Line segment is weighted processing, is merging processing to each electric network fault line segment initial set after weighting, and to each electric network fault The weight of coincidence line segment between line segment initial set is added up to update the weight for overlapping line segment, to obtain resultant fault weighting Line-segment sets carry out comprehensive point by above-mentioned electric network fault Positioning System to a variety of electric network fault line segment initial sets of positioning Analysis, rather than only single faulted line segment initial set is analyzed, time that faulted line segment occurs in each faulted line segment initial set Number is more, and weight may be bigger, indicates that when carrying out fault location by a variety of localization methods the fault wire can be navigated to Section illustrates that the possibility that the faulted line segment is electric network fault line segment is larger, and resultant fault weights the weight of faulted line segment in line-segment sets It is higher, indicate faulted line segment be electric network fault line segment possibility it is bigger, from resultant fault weight line-segment sets in weight selection compared with Big faulted line segment is as electric network fault line-segment sets, to obtain the higher electric network fault positioning result of precision.
Referring to Fig. 6, electric network fault line segment initial set includes interval type electric network fault line segment in one of the embodiments, Initial set and endpoint type electric network fault line segment initial set.Acquisition module 100 includes：
First acquisition unit 110, for respectively by traveling wave positioning, impedance positioning and fault detector positioning to failure It is positioned, obtains and traveling wave positions corresponding first electric network fault line segment initial set, the second power grid corresponding with impedance positioning Faulted line segment initial set and third electric network fault line segment initial set corresponding with fault detector positioning.
Wherein, the first electric network fault line segment initial set, the second electric network fault line segment initial set and third electric network fault line segment Initial set is interval type electric network fault line segment initial set.
Second acquisition unit 120, for positioned respectively by automatic Switching and outlet switch positioning to failure carry out Positioning obtains and the automatic Switching corresponding 4th electric network fault line segment initial set of positioning and corresponding with outlet switch positioning 5th electric network fault line segment initial set.
Wherein, the 4th electric network fault line segment initial set, the 5th electric network fault line segment initial set are endpoint type electric network fault Line segment initial set.
When grid collapses, there are many methods that are positioned to failure, wherein including traveling wave positioning, impedance positioning, Fault detector positioning, the positioning of automatic Switching and outlet switch positioning.The positioning result obtained by these localization methods It is initialization electric network fault line segment, for example, when being positioned to electric network fault by travelling wave positioning method, what is finally obtained determines Position result is exactly to initialize the set of electric network fault line segment, and corresponding electric network fault is obtained by each above-mentioned Fault Locating Method Line segment initial set might have coincidence line segment between each electric network fault line segment initial set, indicate the coincidence line segment both wherein one Kind electric network fault line segment initial set occurs, and also occurs in another electric network fault line segment initial set, or indicate that this is heavy Zygonema section occurs in a variety of electric network fault line segment initial sets, to subsequently do comprehensive point to each electric network fault line segment initial set Analysis, rather than only a kind of electric network fault line segment initial set is analyzed.
Impedance is positioned, using fault recorder data, the fault bit of circuit is calculated according to impedance variations caused by failure It sets, to can get possible initialization electric network fault line segment.
Fault detector is positioned, fault detector is typically mounted at the intelligence that fault current path is indicated on power network line Energy device, when power network line breaks down, the fault detector on faulty line indicates automatic board turning with red colored lamp The line segment breaks down, to can get initialization electric network fault line segment.
For the positioning of automatic Switching and outlet switch positioning, switched by being arranged, when the grid collapses, switch Action, knows the malfunctioning node in power grid, and all branch lines after node are likely to occur failure, thus as melting automatically Close the initialization electric network fault line segment of positioning and outlet switch positioning.
Referring to Fig. 7, merging module 300 includes in one of the embodiments,：
First combining unit 310, for being merged two-by-two between interval type electric network fault line segment initial set, and to phase The weight of coincidence line segment between the interval type electric network fault line segment initial set mutually merged is added, and is mutually merged with update The weight of coincidence line segment between interval type electric network fault line segment initial set obtains first and merges weighting line-segment sets.
Second combining unit 320, for being merged two-by-two between the point-type electric network fault line segment initial set of opposite end, and to phase The weight of coincidence line segment between the endpoint type electric network fault line segment initial set mutually merged is added, and is mutually merged with update The weight of coincidence line segment between endpoint type electric network fault line segment initial set obtains second and merges weighting line-segment sets.
Third combining unit 330, merges weighting line-segment sets and merges with second for merging first and weight line-segment sets, and to the One weight for overlapping line segment merged between weighting line-segment sets and the second merging weighting line-segment sets is added, and is closed with update first And the weight for overlapping line segment between line-segment sets and the second merging weighting line-segment sets is weighted, it obtains resultant fault and weights line-segment sets.
During fault location, since interval type electric network fault line segment initial set and endpoint type electric network fault line segment are initial It is different to integrate as the possibility of electric network fault line segment, to separately be weighted to all types of faulted line segment collection respectively and separate conjunction And then to all types of faulted line segment collection weighting amalgamation result merge, be conducive to all types of faulted line segment collection amalgamation results more Accurately, to make to determine that the accuracy of electric network fault line-segment sets is more preferable.
Specifically, interval type electric network fault line segment initial set includes the first electric network fault line segment initial set, the second power grid Faulted line segment initial set and third electric network fault line segment initial set, the first combining unit 310 are specifically used for the first electric network fault Line segment initial set is merged with the second electric network fault line segment initial set, and to the first electric network fault line segment initial set and the second electricity The weight of coincidence line segment between net faulted line segment initial set is added, to update the first electric network fault line segment initial set and the The weight of coincidence line segment between two electric network fault line segment initial sets, obtaining portion division simultaneously weight line-segment sets, merge to part and add Power line-segment sets are merged with third electric network fault line segment initial set, and merge weighting line-segment sets and third electric network fault to part The weight of coincidence line segment between line segment initial set is added, and with update section division and weights line-segment sets and third electric network fault The weight of coincidence line segment between line segment initial set obtains first and merges weighting line-segment sets.
During fault location, first is obtained respectively by traveling wave positioning, impedance positioning and fault detector positioning Electric network fault line segment initial set, the second electric network fault line segment initial set and third electric network fault line segment initial set, three kinds of electricity The faulted line segment of net faulted line segment initial set is expressed as a certain base shaft tower of power network line to the distance range of another base shaft tower, Or the distance range for a certain base shaft tower to measurement point, spatially it is rendered as single line segment.First, by two kinds of faulty lines Collection carries out union processing, and is updated to the weight of coincidence line section, with obtaining portion division and line-segment sets is weighted, in above two After faulted line segment collection merges, then part is merged into weighting line-segment sets and is merged with third initialization power grid kind faulted line segment collection, And weight is updated, merge weighting line-segment sets to obtain first.Above-mentioned merging the first electric network fault line segment initial set, the event of the second power grid The amalgamation result for hindering line segment initial set and third electric network fault line segment initial set is unrelated with merging sequence, can arbitrary arrangement conjunction And for example, after also first the second electric network fault line segment initial set and third electric network fault line segment initial set can be merged again with First electric network fault line segment initial set merges.
Specifically, endpoint type electric network fault line segment initial set includes the 4th electric network fault line segment initial set and the 5th electricity Net faulted line segment initial set, the second combining unit 320 are specifically used for the 4th electric network fault line segment initial set and the event of the 5th power grid Barrier line segment initial set merges, and between the 4th electric network fault line segment initial set and the 5th electric network fault line segment initial set The weight for overlapping line segment is added, with update the 4th electric network fault line segment initial set and the 5th electric network fault line segment initial set it Between coincidence line segment weight, obtain second merge weighting line-segment sets.
During fault location, is positioned by automatic Switching and outlet switch positioning obtains the event of the 4th power grid respectively Hinder line segment initial set and the 5th electric network fault line segment initial set, the fault wire segment table of two kinds of electric network fault line segment initial sets It may be abort situation to be shown as all branch lines after some node in power network line topological diagram, spatially the company of being rendered as Logical line segment.
Faulted line segment collection after above two is merged merges again, and is updated to coincidence line section weight, with It obtains resultant fault and weights line-segment sets, wherein the weight of non-coincidence line segment remains unchanged.Above-mentioned first combining unit 310 and The merging sequence of second combining unit 320 can arbitrary arrangement.And first combining unit 310 it is specifically initial to the first electric network fault Sequence when collection, the second electric network fault initial set and third power grid initial set merge also can arbitrary arrangement.
In the present embodiment, when being weighted respectively to the faulted line segment of each electric network fault line segment initial set, initialization The event of first electric network fault line segment initial set, the second electric network fault line segment initial set and third electric network fault line segment initial set The weight for hindering line segment is 1, initializes the event of the 4th electric network fault line segment initial set and the 5th electric network fault line segment initial set The weight for hindering line segment is 0.5.
During fault location, the first electric network fault line segment initial set, the second electric network fault line segment initial set and Three electric network fault line segment initial sets are obtained by traveling wave positioning, impedance positioning and fault detector positioning respectively, are to belong to In a type of positioning result.4th electric network fault line segment initial set and the 5th electric network fault line segment initial set are logical respectively It crosses automatic Switching positioning and outlet switch positions acquisition, be to belong to a type of positioning result, due to all types of Positioning result is that the possibility of electric network fault line segment is different, to separately be weighted to all types of faulted line segment collection respectively And merging is separated, then all types of weighting amalgamation results is merged, be conducive to all types of faulted line segment collection amalgamation results It is more acurrate, to make to determine that the accuracy of electric network fault line-segment sets is more preferable.
Referring to Fig. 8, above-mentioned electric network fault line segment Positioning System further includes in one of the embodiments,：
Comparison module 340, for when having detected discrete fault point, discrete fault point and resultant fault to be weighted line segment Collection is compared.
Computing module 350, for that when discrete fault point is fallen on the line segment during resultant fault weights line-segment sets, will integrate The weights of line segment corresponding with discrete fault point add 1 in failure weight line-segment sets.
Discrete fault point is expressed as discontinuous, discrete failure shaft tower, is spatially rendered as discrete point, wherein It is discrete point positioning result, as lightning fault point by the obtained positioning result of lighting location.In electric network fault type, Circuit occupies larger proportion by lightning fault caused by being struck by lightning, as the precision of lightning location system positioning is continuously improved, thunder Electricity positioning can be used as the means of electric network fault positioning accuracy raising.
When power grid is by being struck by lightning, lightning fault is may result in, when detecting lightning fault point, that is, is detected discrete Discrete fault point is compared with above-mentioned resultant fault weighting line-segment sets, judges whether discrete fault point falls upper by fault point State in resultant fault weighting line-segment sets on certain line segment, when judging result is to be, by discrete fault point fall it is above-mentioned comprehensive therefore The weight of line segment corresponding with discrete fault point adds 1 in barrier weighting line-segment sets, and further, it is electric network fault line segment to reinforce the line segment Possibility.
Please continue to refer to Fig. 8, above-mentioned electric network fault line segment Positioning System further includes in one of the embodiments,：
Second determining module 500, for according to the discrete fault point on the line segment in electric network fault line-segment sets is fallen, determining Electric network fault point set.
Electric network fault line-segment sets are obtained after being screened to the resultant fault weighting line-segment sets after sequence, that is, are eliminated The line segment that weight is told somebody what one's real intentions are illustrates the discrete fault point if discrete fault point is also fallen on the line segment in electric network fault line-segment sets It is very likely fault point, is filtered out as electric network fault point, if discrete fault point does not fall within electric network fault line-segment sets In line segment on, then the discrete fault point is excluded, it is believed that it is not electric network fault point, and the positioning result of electric network fault is power grid Faulted line segment collection and electric network fault point, the positioning result of electric network fault is exported, and is supplied to repair personnel, repair personnel is according to fixed It is repaired as a result, being quickly found out abort situation position.
Each technical characteristic of above example can be combined arbitrarily, to keep description succinct, not to above-described embodiment In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance Shield is all considered to be the range of this specification record.
Only several embodiments of the present invention are expressed for above example, the description thereof is more specific and detailed, but can not Therefore it is construed as limiting the scope of the patent.It should be pointed out that for those of ordinary skill in the art, Under the premise of not departing from present inventive concept, various modifications and improvements can be made, these are all within the scope of protection of the present invention. Therefore, the protection domain of patent of the present invention should be determined by the appended claims.

Claims (8)

1. a kind of electric network fault line segment synthesized positioning method, which is characterized in that include the following steps：
Obtain a variety of electric network fault line segment initial sets；
The faulted line segment of each electric network fault line segment initial set is weighted respectively；
Merge each electric network fault line segment initial set, and the coincidence line segment between each electric network fault line segment initial set Weight is added up to update the weight for overlapping line segment, is obtained resultant fault and is weighted line-segment sets；
The faulted line segment in line-segment sets is weighted to the resultant fault to be ranked up according to weight, obtains the resultant fault weighting The ranking results of line-segment sets choose the faulted line segment of the larger preceding preset quantity of weights in the ranking results, determine power grid event Hinder line-segment sets；
Wherein, described to merge each electric network fault line segment initial set, and between each electric network fault line segment initial set The weight for overlapping line segment is added up to update the weight for overlapping line segment, is obtained the step of resultant fault weights line-segment sets and is wrapped It includes：
At the beginning of the electric network fault line segment initial set includes interval type electric network fault line segment initial set and endpoint type electric network fault line segment Initial set；
Merged two-by-two between the interval type electric network fault line segment initial set, and the electricity of the interval type to mutually merging The weight of coincidence line segment between net faulted line segment initial set is added, to update the interval type power grid event mutually merged The weight for hindering the coincidence line segment between line segment initial set obtains first and merges weighting line-segment sets；
Merged two-by-two between the endpoint type electric network fault line segment initial set, and the electricity of the endpoint type to mutually merging The weight of coincidence line segment between net faulted line segment initial set is added, to update the endpoint type power grid event mutually merged The weight for hindering the coincidence line segment between line segment initial set obtains second and merges weighting line-segment sets；
Merge the first merging weighting line-segment sets and merge weighting line-segment sets with described second, and merges weighting line to described first Second weight for merging the coincidence line segment between weighting line-segment sets described in Duan Jiyu is added, and is added with updating first merging The weight for overlapping line segment between line-segment sets and the second merging weighting line-segment sets is weighed, the resultant fault weighting line segment is obtained Collection.
2. electric network fault line segment synthesized positioning method according to claim 1, which is characterized in that described to obtain a variety of power grids The step of faulted line segment initial set includes：
Failure is positioned by traveling wave positioning, impedance positioning and fault detector positioning respectively, is obtained and the traveling wave Position corresponding first electric network fault line segment initial set, the second electric network fault line segment initial set corresponding with impedance positioning with And third electric network fault line segment initial set corresponding with fault detector positioning, the first electric network fault line segment are initial Collection, the second electric network fault line segment initial set and the third electric network fault line segment initial set are interval type electric network fault line Section initial set；
It is positioned respectively by automatic Switching and outlet switch positioning positions failure, obtained and the automatic Switching Position corresponding 4th electric network fault line segment initial set and the 5th electric network fault line segment corresponding with outlet switch positioning Initial set, the 4th electric network fault line segment initial set and the 5th electric network fault line segment initial set are endpoint type power grid Faulted line segment initial set.
3. electric network fault line segment synthesized positioning method according to claim 1, which is characterized in that described to the comprehensive event Line segment in barrier weighting line-segment sets is ranked up according to weight, obtains the ranking results of the resultant fault weighting line-segment sets, choosing The faulted line segment for taking the preceding preset quantity that weights are larger in the ranking results, before the step of determining electric network fault line-segment sets also Including：
When having detected discrete fault point, the discrete fault point is compared with resultant fault weighting line-segment sets；
When the discrete fault point is fallen on the line segment during the resultant fault weights line-segment sets, the resultant fault is weighted The weights of the line segment corresponding with the discrete fault point in line-segment sets add 1.
4. electric network fault line segment synthesized positioning method according to claim 3, which is characterized in that described to the comprehensive event Line segment in barrier weighting line-segment sets is ranked up according to weight, obtains the ranking results of the resultant fault weighting line-segment sets, choosing The faulted line segment for taking the preceding preset quantity that weights are larger in the ranking results, after the step of determining electric network fault line-segment sets also Including：
According to the discrete fault point on the line segment fallen in the electric network fault line-segment sets, electric network fault point set is determined.
5. a kind of electric network fault line segment Positioning System, which is characterized in that including：
Acquisition module, for obtaining a variety of electric network fault line segment initial sets；
Weighting block, for being weighted respectively to the faulted line segment of each electric network fault line segment initial set；
Merging module, for merging each electric network fault line segment initial set, and to each electric network fault line segment initial set it Between coincidence line segment weight added up with update it is described overlap line segment weight, obtain resultant fault weight line-segment sets；
First determining module is ranked up according to weight for weighting the faulted line segment in line-segment sets to the resultant fault, obtains The ranking results for obtaining the resultant fault weighting line-segment sets, choose the event of the larger preceding preset quantity of weights in the ranking results Hinder line segment, determines electric network fault line-segment sets；
Wherein, the electric network fault line segment initial set includes interval type electric network fault line segment initial set and endpoint type electric network fault line Section initial set；
The merging module includes：
First combining unit, for being merged two-by-two between the interval type electric network fault line segment initial set, and to mutual The weight of coincidence line segment between the interval type electric network fault line segment initial set merged is added, described mutual to update The weight of coincidence line segment between combined interval type electric network fault line segment initial set obtains first and merges weighting line-segment sets；
Second combining unit, for being merged two-by-two between the endpoint type electric network fault line segment initial set, and to mutual The weight of coincidence line segment between the endpoint type electric network fault line segment initial set merged is added, described mutual to update The weight of coincidence line segment between combined endpoint type electric network fault line segment initial set obtains second and merges weighting line-segment sets；
Third combining unit merges weighting line-segment sets for merging the first merging weighting line-segment sets with described second, and right Described first weight for overlapping line segment merged between weighting line-segment sets and the second merging weighting line-segment sets is added, with It updates described first and merges the weight for overlapping line segment weighted between line-segment sets and the second merging weighting line-segment sets, obtain institute State resultant fault weighting line-segment sets.
6. electric network fault line segment Positioning System according to claim 5, which is characterized in that
The acquisition module includes：
First acquisition unit, for being determined respectively failure by traveling wave positioning, impedance positioning and fault detector positioning Position, obtains and the traveling wave positions corresponding first electric network fault line segment initial set, the second electricity corresponding with impedance positioning Net faulted line segment initial set and third electric network fault line segment initial set corresponding with fault detector positioning, described first Electric network fault line segment initial set, the second electric network fault line segment initial set and the third electric network fault line segment initial set are Interval type electric network fault line segment initial set；
Second acquisition unit, for positioned respectively by automatic Switching and outlet switch positioning failure is positioned, obtain Take with the automatic Switching position corresponding 4th electric network fault line segment initial set and with outlet switch positioning it is corresponding The 5th electric network fault line segment initial set, the 4th electric network fault line segment initial set, the 5th electric network fault line segment are initial Collection is endpoint type electric network fault line segment initial set.
7. electric network fault line segment Positioning System according to claim 5, which is characterized in that further include：
Comparison module, for when having detected discrete fault point, the discrete fault point and the resultant fault to be weighted line Section collection is compared；
Computing module, for when the discrete fault point fall the resultant fault weight line-segment sets in line segment on when, by institute The weights for stating the line segment corresponding with the discrete fault point in resultant fault weighting line-segment sets add 1.
8. electric network fault line segment Positioning System according to claim 7, which is characterized in that further included：
Second determining module falls the discrete fault point on the line segment in the electric network fault line-segment sets, really for basis Determine electric network fault point set.
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