CN105425105A - Method and system for comprehensive positioning of fault line of power grid - Google Patents

Method and system for comprehensive positioning of fault line of power grid Download PDF

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Publication number
CN105425105A
CN105425105A CN201510750960.4A CN201510750960A CN105425105A CN 105425105 A CN105425105 A CN 105425105A CN 201510750960 A CN201510750960 A CN 201510750960A CN 105425105 A CN105425105 A CN 105425105A
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line segment
electric network
network fault
segment
initial set
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CN105425105B (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 invention relates to a method and system for the comprehensive positioning of a fault line of a power grid, and the method comprises the steps: firstly carrying out the weighted processing of various types of fault lines; secondly carrying out the combination of all fault line sets after weighting; thirdly carrying out the accumulation of the weights of coincided lines of all fault line sets, so as to update the weights of the coincided lines and to obtain a comprehensive fault weighted line set. The method carries out the comprehensive analysis of various types of fault lines, not just the analysis of a single fault line set. The more times a line appears in various fault line sets, the weight of the line may be larger (indicating that the line can be positioned when a plurality of positioning methods are used for fault positioning), thereby indicating that the possibility that the line is a fault line is higher. The higher weight of a line in the comprehensive fault weighted line set indicates that the higher possibility that the line is a fault line of the power grid. The line with the higher weight is selected from the comprehensive fault weighted line set as the fault line set of the power grid, thereby obtaining higher-precision fault positioning result of the power grid.

Description

Electric network fault line segment synthesized positioning method and system
Technical field
The present invention relates to electric field, particularly 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, thus ensure that power system security effectively runs and becomes the most important thing, Modern power distribution netting gear has that topological relation is complicated, number of nodes mainly with and the feature such as intensive, in actual moving process, because the reasons such as outside destroy, extreme weather and ageing equipment can break down unavoidably.After fault occurs, determine that abort situation plays conclusive effect for the saving breakdown repair time as early as possible.Current, Fault Locating Method conventional in electrical network has impedance method, traveling wave method, fault detector location, robotization switch location and outlet switch location etc.Wherein fault detector location, robotization switch location and outlet switch location are the localization methods that degree of being practical is higher in electrical network at present.
Existing a kind of technical scheme being applicable to the comprehensive one-end fault localization method of distribution network line has merged the comprehensive one-end fault localization method of impedance method, frequency domain method and traveling wave method on stream.First it extract transient state travelling wave natural frequency by signal margin spectrum, primary fault distance is calculated by frequency domain method, next utilizes primary fault distance and power frequency amount estimation transition resistance, result determination reflection wave recognition time window and reflection polarity is estimated according to primary fault distance and transition resistance, realize reliable reflection wave identification on this basis, finally complete the one-end fault location of distribution network line.But although the localization method that this technical scheme provides promotes to some extent than a positioning precision using traveling wave method to locate, its positioning precision is still by the frequency of line voltage distribution current data collection and the impact of sampled signal transport property.Larger and the complex structure of distribution line, to install higher for the cost of the oscillograph or other equipment that gather HF voltage current data at each circuit, be difficult to carry out large-area popularization quote, if utilize the electric current and voltage data that comparatively universal SCADA system or electric energy quality monitoring system gather, its sample frequency determines the accuracy requirement that it cannot meet Distribution Network Failure location.
Summary of the invention
Based on this, be necessary for the lower problem of localization of fault precision, a kind of the electric network fault line segment synthesized positioning method and the system that improve localization of fault precision are provided.
Above-mentioned electric network fault line segment synthesized positioning method and system, first respectively process is weighted to the faulted line segment of multiple electric network fault line segment initial set, merging treatment is being carried out to the first initial set of each electric network fault line segment after weighting, and the weight of the coincidence line segment of each electric network fault line segment just between initial set is carried out cumulative with the weight upgrading coincidence line segment, to obtain resultant fault weighting line-segment sets, by above-mentioned electric network fault synthesized positioning method and system, the first initial set of the multiple electric network fault line segment of location is comprehensively analyzed, instead of only the first initial set of single faulted line segment is analyzed, the number of times that faulted line segment occurs in each faulted line segment initial set is more, its weight may be larger, represent and can navigate to this faulted line segment when being carried out localization of fault by multiple localization method, illustrate this faulted line segment be electric network fault line segment may be larger, in resultant fault weighting line-segment sets, the weight of faulted line segment is higher, expression faulted line segment is that the possibility of electric network fault line segment is larger, the faulted line segment that weight selection is larger from resultant fault weighting line-segment sets is as electric network fault line-segment sets, thus obtain the higher electric network fault positioning result of precision.
Accompanying drawing explanation
Fig. 1 is a kind of process flow diagram of electric network fault line segment synthesized positioning method of embodiment;
Fig. 2 is the process flow diagram of the electric network fault line segment synthesized positioning method of another kind of embodiment;
Fig. 3 is the process flow diagram of the electric network fault line segment synthesized positioning method of another kind of embodiment;
Fig. 4 is the process flow diagram of the electric network fault line segment synthesized positioning method of another kind of embodiment;
Fig. 5 is a kind of module map of electric network fault line segment Positioning System of embodiment;
Fig. 6 is the submodule figure of the electric network fault line segment Positioning System of another kind of embodiment;
Fig. 7 is the submodule figure of the electric network fault line segment Positioning System of another kind of embodiment;
Fig. 8 is the module map of the electric network fault line segment Positioning System of another kind of embodiment.
Embodiment
Refer to Fig. 1, a kind of electric network fault line segment synthesized positioning method of embodiment is provided, comprises the steps:
S100: obtain multiple electric network fault line segment just initial set.
After grid collapses, determine that abort situation plays decisive role for the shortening breakdown repair time as early as possible, have multiple to the localization method of electric network fault, wherein, comprise the localization method of multiple localizing faults line segment, namely when grid collapses, determine the line segment that may break down.Corresponding positioning result can be obtained by each Fault Locating Method, multiple electric network fault line segment just initial set can be obtained, the set of the line segment that electric network fault line segment breaks down when just initial set refers to electric network fault, just may there is coincidence line segment between initial set in these electric network fault line segments, also may there is different faulted line segments.
S200: respectively the faulted line segment of each electric network fault line segment initial set is weighted.
The faulted line segment of each electric network fault line segment initial set obtained is to different when determining the influence degree of electric network fault result, thus need to be weighted the faulted line segment of each electric network fault line segment initial set, the weight of faulted line segment is larger, representing that this faulted line segment is to determining that the influence degree of electric network fault result is larger, is more likely electric network fault line segment.
S300: merge each electric network fault line segment just initial set, and the weight of the coincidence line segment of each electric network fault line segment just between initial set is carried out cumulative with the weight upgrading coincidence line segment, obtain resultant fault weighting line-segment sets.
After the faulted line segment of each electric network fault line segment initial set is weighted, comprehensively need analyze to the first initial set of each electric network fault line segment, because each electric network fault line segment just may exist coincidence line segment between initial set, thus the first initial set of each electric network fault line segment is merged, namely union process is done, and the weight of coincidence line segment is added up, the weight after cumulative is updated to the weight that the faulted line segment after merging concentrates this coincidence line segment, obtains resultant fault weighting line-segment sets.By above-mentioned merging and weight update process, make the weight of coincidence line segment increasing, the weight of non-coincidence line segment remains unchanged.
S400: sort according to weight to the faulted line segment in resultant fault weighting line-segment sets, obtains the ranking results of resultant fault weighting line-segment sets, chooses the faulted line segment of the larger front predetermined number of weights in ranking results, determine electric network fault line-segment sets.
After to each electric network fault line segment, just initial set carries out above-mentioned merging and weight update process, the weight of the faulted line segment in resultant fault weighting line-segment sets determines, the line segment that coincidence number of times is more, its weight is larger, more can represent that this line segment is electric network fault line segment, thus the line segment in resultant fault weighting line-segment sets is sorted according to weight, weight is larger, sort more forward, expression line segment is that the possibility of electric network fault is larger, choose the line segment of the front predetermined number that weight is larger in the resultant fault weighting line-segment sets after sequence as electric network fault line-segment sets, thus electric network fault line segment aggregate can be determined, such as, choose the line segment of first 10 that in the resultant fault weighting line-segment sets after sequence, weight is larger as electric network fault line-segment sets.In the present embodiment, between the faulted line segment in the electric network fault line-segment sets determined, first place connects, then the faulted line segment in electric network fault line-segment sets is merged into a line segment.
Above-mentioned electric network fault line segment synthesized positioning method, first respectively process is weighted to the faulted line segment of multiple electric network fault line segment initial set, merging treatment is being carried out to the first initial set of each electric network fault line segment after weighting, and the weight of the coincidence line segment of each electric network fault line segment just between initial set is carried out cumulative with the weight upgrading coincidence line segment, to obtain resultant fault weighting line-segment sets, by above-mentioned electric network fault synthesized positioning method, the first initial set of the multiple electric network fault line segment of location is comprehensively analyzed, instead of only the first initial set of single faulted line segment is analyzed, the number of times that faulted line segment occurs in each faulted line segment initial set is more, its weight may be larger, represent and can navigate to this faulted line segment when being carried out localization of fault by multiple localization method, illustrate this faulted line segment be electric network fault line segment may be larger, in resultant fault weighting line-segment sets, the weight of faulted line segment is higher, expression faulted line segment is that the possibility of electric network fault line segment is larger, the faulted line segment that weight selection is larger from resultant fault weighting line-segment sets is as electric network fault line-segment sets, thus obtain the higher electric network fault positioning result of precision.
Refer to Fig. 2, wherein in an embodiment, electric network fault line segment just initial set comprises interval type electric network fault line segment just initial set and end points type electric network fault line segment just initial set.
The step S100 obtaining the first initial set of multiple electric network fault line segment comprises:
S110: position fault respectively by row ripple location, impedance location and fault detector location, acquisition and row ripple are located the first initial set of the first corresponding electric network fault line segment, locate the first initial set of the second corresponding electric network fault line segment with impedance and are located the 3rd corresponding electric network fault line segment just initial set with fault detector.
Wherein, just initial set, the first initial set of the second electric network fault line segment and the first initial set of the 3rd electric network fault line segment are interval type electric network fault line segment just initial set to the first electric network fault line segment.
S120: position fault respectively by robotization switch location and outlet switch location, acquisition and robotization switch are located the first initial set of the 4th corresponding electric network fault line segment and are located the 5th corresponding electric network fault line segment just initial set with outlet switch.
Wherein, just initial set and the first initial set of the 5th electric network fault line segment are end points type electric network fault line segment just initial set to the 4th electric network fault line segment.
During grid collapses, have many to the method that fault positions, wherein, comprise row ripple location, impedance location, fault detector location, robotization switch location and outlet switch location.The positioning result obtained by these localization methods is initialization electric network fault line segment, such as, when electric network fault being positioned by travelling wave positioning method, the positioning result finally obtained is exactly the set of initialization electric network fault line segment, corresponding electric network fault line segment just initial set is obtained by above-mentioned often kind of Fault Locating Method, each electric network fault line segment just may have coincidence line section between initial set, represent the both a kind of electric network fault line segment initial set appearance wherein of this coincidence line segment, also occurred in another kind of electric network fault line segment initial set, or represent that this coincidence line segment has occurred in multiple electric network fault line segment initial set, thus follow-up to each electric network fault line segment just initial set do comprehensive analysis, instead of only the first initial set of a kind of electric network fault line segment is analyzed.
Row ripple is located, in topological structure of electric, electrical network is made up of circuit and node, when in electrical network during certain line failure, be that starting point can produce fault traveling wave with abort situation, propagate in whole electrical network along circuit with the light velocity, installed rows ripple locating device in electrical network, when certain line failure, due to the time arrived by initial row ripple during the fault of row ripple locating device record, fault distance between trouble spot and measurement point can be measured, thus just can carry out initialization electric network fault line segment location.
For impedance location, adopt fault recorder data, according to the abort situation of the impedance variation computational scheme that fault causes, thus possible initialization electric network fault line segment can be obtained.
Fault detector is located, fault detector is generally arranged on the intelligent apparatus of indication fault current path on power network line, when power network line breaks down, be in fault detector on faulty line by automatic board turning, indicate this line segment to break down with red colored lamp, thus initialization electric network fault line segment can be obtained.
For robotization switch location and outlet switch location, by arranging switch, when the grid collapses, switch motion, know the malfunctioning node in electrical network, all branch lines after node may break down, thus it can be used as the initialization electric network fault line segment that robotization switch is located and outlet switch is located.
Refer to Fig. 3, wherein in an embodiment, merge each electric network fault line segment just initial set, and carry out the weight of the coincidence line segment of each electric network fault line segment just between initial set cumulative with the weight upgrading coincidence line segment, the step S300 obtaining resultant fault weighting line-segment sets comprises:
S310: interval type electric network fault line segment is just merged between initial set between two, and the weight of the coincidence line segment of the interval type electric network fault line segment mutually merged just between initial set is added, to upgrade the weight of the coincidence line segment of interval type electric network fault line segment just between initial set mutually merged, obtain first and merge weighting line-segment sets.
S320: opposite end point-type electric network fault line segment just merges between initial set between two, and the weight of the coincidence line segment of the end points type electric network fault line segment mutually merged just between initial set is added, to upgrade the weight of the coincidence line segment of end points type electric network fault line segment just between initial set mutually merged, obtain second and merge weighting line-segment sets.
S330: merge the first merging weighting line-segment sets and second and merge weighting line-segment sets, and the first merging weighting line-segment sets is added with the weight of the second line segment that overlaps merged between weighting line-segment sets, to upgrade the weight that the first merging weighting line-segment sets and second merges the line segment that overlaps between weighting line-segment sets, obtain resultant fault weighting line-segment sets.
In localization of fault process, the possibility being electric network fault line segment due to the first initial set of interval type electric network fault line segment and the first initial set of end points type electric network fault line segment is different, thus respectively weighting is separated and split and merge to all types of faulted line segment collection, again all types of faulted line segment collection weighting amalgamation result is merged, be conducive to all types of faulted line segment collection amalgamation result more accurate, thus make to determine that the accuracy of electric network fault line-segment sets is better.
Particularly, interval type electric network fault line segment initial set comprises the first electric network fault line segment just initial set, the second electric network fault line segment just initial set and the 3rd electric network fault line segment just initial set, and step S310 specifically comprises:
To the first electric network fault line segment, just initial set and the first initial set of the second electric network fault line segment merge, and the weight of the overlap line segment of the first electric network fault line segment just between initial set with the first initial set of the second electric network fault line segment is added, to upgrade the weight of the overlap line segment of the first electric network fault line segment just between initial set with the first initial set of the second electric network fault line segment, obtaining portion is divided and is merged weighting line-segment sets.
Part merging weighting line-segment sets and the first initial set of the 3rd electric network fault line segment are merged, and the weight of the line segment that overlaps that part merges between weighting line-segment sets with the first initial set of the 3rd electric network fault line segment is added, divide with update section and merge weighting line-segment sets and the weight of the overlap line segment of the 3rd electric network fault line segment just between initial set, obtain first and merge weighting line-segment sets.
In localization of fault process, the first electric network fault line segment just initial set, the second electric network fault line segment just initial set and the 3rd electric network fault line segment just initial set is obtained respectively by row ripple location, impedance location and fault detector location, the faulted line segment of these three kinds of electric network fault line segment initial set is expressed as the distance range of a certain base shaft tower to another base shaft tower of power network line, or be the distance range of a certain base shaft tower to measurement point, be spatially rendered as single line segment.First, two kinds of faulty line collection are carried out union process, and the weight of coincidence line section is upgraded, divide with obtaining portion and merge weighting line-segment sets, after above-mentioned two kinds of faulted line segment set also, again part merging weighting line-segment sets and the 3rd initialization electrical network kind faulted line segment collection are merged, and upgrade weight, to obtain the first merging weighting line-segment sets.Amalgamation result and the merge order of the first initial set of above-mentioned merging first electric network fault line segment, the first initial set of the second electric network fault line segment and the first initial set of the 3rd electric network fault line segment have nothing to do, can merge by arbitrary arrangement, such as, after also can first first for the second electric network fault line segment initial set and the first initial set of the 3rd electric network fault line segment being merged, first initial set merges with the first electric network fault line segment again.
Particularly, end points type electric network fault line segment initial set comprises the 4th electric network fault line segment just initial set and the 5th electric network fault line segment just initial set, and step S320 is specially:
To the 4th electric network fault line segment, just initial set and the first initial set of the 5th electric network fault line segment merge, and the weight of the overlap line segment of the 4th electric network fault line segment just between initial set with the first initial set of the 5th electric network fault line segment is added, to upgrade the 4th electric network fault line segment just initial set and the weight of the overlap line segment of the 5th electric network fault line segment just between initial set, obtain second and merge weighting line-segment sets.
In localization of fault process, located by robotization switch and outlet switch location acquisition the 4th electric network fault line segment just initial set and the 5th electric network fault line segment just initial set respectively, all branch lines that the faulted line segment of these two kinds of electric network fault line segment initial set is expressed as after certain node in power network line topological diagram may be all abort situation, are spatially rendered as the line segment of connection.
Faulted line segment collection after merging above-mentioned two kinds merges again, and upgrades coincidence line section weight, and to obtain resultant fault weighting line-segment sets, wherein, the weight of non-coincidence line segment remains unchanged.The order of above-mentioned steps S310 and S320 can arbitrary arrangement.And order when specifically just initial set, the first initial set of the second electric network fault and the first initial set of the 3rd electrical network merge to the first electric network fault also can arbitrary arrangement.
In the present embodiment, when respectively the faulted line segment of each electric network fault line segment initial set being weighted, the weight of the faulted line segment of the first initial set of initialization first electric network fault line segment, the first initial set of the second electric network fault line segment and the 3rd electric network fault line segment initial set is 1, and the weight of the faulted line segment of the first initial set of initialization the 4th electric network fault line segment and the 5th electric network fault line segment initial set is 0.5.
In localization of fault process, first electric network fault line segment just initial set, the first initial set of the second electric network fault line segment and the first initial set of the 3rd electric network fault line segment is obtained by row ripple location, impedance location and fault detector location respectively, is the positioning result belonging to a type.4th electric network fault line segment just initial set and the first initial set of the 5th electric network fault line segment is located by robotization switch and the acquisition of outlet switch location respectively, it is the positioning result belonging to a type, the possibility being electric network fault line segment due to all types of positioning results is different, thus respectively weighting is separated and split and merge to all types of faulted line segment collection, again all types of weighting amalgamation results is merged, be conducive to all types of faulted line segment collection amalgamation results more accurate, thus make to determine that the accuracy of electric network fault line-segment sets is better.
Refer to Fig. 4, wherein in an embodiment, line segment in resultant fault weighting line-segment sets is sorted according to weight, obtain the ranking results of resultant fault weighting line-segment sets, choose the faulted line segment of the larger front predetermined number of weights in ranking results, also comprise before determining the step S400 of electric network fault line-segment sets:
S340: when discrete trouble spot having been detected, compares discrete trouble spot and resultant fault weighting line-segment sets;
S350: when discrete trouble spot is dropped on the line segment in resultant fault weighting line-segment sets, the weights of line segment corresponding with discrete trouble spot in resultant fault weighting line-segment sets are added 1.
Discrete trouble spot is expressed as discontinuous, discrete fault shaft tower, is spatially rendered as discrete point, and wherein, the positioning result obtained by lighting location is discrete point positioning result, is lightning fault point.In electric network fault type, the circuit lightning fault caused that suffers to be struck by lightning occupies larger proportion, along with the precision of lightning location system location improves constantly, and the means that lighting location also can improve as electric network fault positioning precision.
When electrical network is struck by lightning, lightning fault may be caused, detection is positioned by the lightning stroke flashover of Lightning Location Method to power network line, when lightning fault point being detected, namely discrete trouble spot is detected, discrete trouble spot and above-mentioned resultant fault weighting line-segment sets are compared, judge whether discrete trouble spot is dropped in above-mentioned resultant fault weighting line-segment sets on certain line segment, when judged result is for being, the weight of line segment corresponding with discrete trouble spot in the above-mentioned resultant fault weighting line-segment sets dropped on discrete trouble spot adds 1, further, strengthen the possibility that this line segment is electric network fault line segment.
Please continue to refer to Fig. 4, wherein in an embodiment, line segment in resultant fault weighting line-segment sets is sorted according to weight, obtain the ranking results of resultant fault weighting line-segment sets, choose the faulted line segment of the larger front predetermined number of weights in ranking results, also comprise after determining the step S400 of electric network fault line-segment sets:
S500: according to the discrete trouble spot on the line segment dropped in electric network fault line-segment sets, determine electric network fault point set.
Electric network fault line-segment sets is obtained after resultant fault weighting line-segment sets after sequence is screened, namely the line segment that some weights are told somebody what one's real intentions are is eliminated, if discrete trouble spot is also dropped on the line segment in electric network fault line-segment sets, then illustrate that this discrete trouble spot is very likely trouble spot, filtered out as electric network fault point, if discrete trouble spot is not dropped on the line segment in electric network fault line-segment sets, then this discrete trouble spot is got rid of, think that it is not electric network fault point, the positioning result of electric network fault is electric network fault line-segment sets and electric network fault point, the positioning result of electric network fault is exported, be supplied to repair personnel, repair personnel is according to positioning result, abort situation is found to rush to repair fast.
With a specific embodiment, above-mentioned electric network fault line segment synthesized positioning method is illustrated below.
First, carry out spatial weighting to the first initial set of all interval type electric network fault line segments to ask friendship, merge and staged operation, obtain the first merging weighting line-segment sets, wherein, interval type electric network fault line segment just initial set comprises the first electric network fault line segment just initial set, the second electric network fault line segment just initial set and the 3rd electric network fault line segment just initial set, but interval type electric network fault line segment just initial set is not limited to above-mentioned three kinds of electric network fault line segments just initial set, and concrete subprocess is as follows:
The weight of the single faulted line segment of initialization all interval types electric network fault line segment initial set is 1.
Carrying out space to the first initial set of the first electric network fault line segment and the first initial set of the second electric network fault line segment asks friendship to operate, coincidence line segment to be merged as independent line segment and weighted value is set to the weighted value sum of coincidence line segment, first for first electric network fault line segment initial set and the first initial set of the second electric network fault line segment are carried out space respectively with the line segment that overlaps ask difference to operate to obtain other line segments, other line segments keep weight constant, and coincidence line segment and the final forming section of other line segments merge weighting line-segment sets;
Part merging weighting line-segment sets and the first initial set of the 3rd electric network fault line segment are carried out space asks friendship to operate, coincidence line segment to be merged as independent line segment and weighted value is set to the weighted value sum of coincidence line segment, part merging weighting line-segment sets and the first initial set of the 3rd electric network fault line segment are carried out space respectively respectively with the line segment that overlaps ask difference to operate to obtain other line segments, other line segments keep weight constant, and this coincidence line segment and this other line segments finally form the first merging weighting line-segment sets.
When interval type electric network fault line segment initial set faulted line segment collection incessantly comprise above-mentioned three kinds of electric network fault line segments just initial set time, again the first merging weighting line-segment sets and the first initial set of next electric network fault line segment are merged, and upgrade weighted value, obtain the first new merging weighting line-segment sets, the first initial set of all electric network fault line segments repeats this step, until all take part in joint account.
When interval type electric network fault line segment initial set only exist an electric network fault line segment just initial set time, directly using the electric network fault line segment after this weighting just initial set export as positioning result.When interval type electric network fault line segment initial set only exist two electric network fault line segments just initial set time, carrying out space to the first initial set of two electric network fault line segments asks friendship to operate, coincidence line segment to be merged as independent line segment and weighted value is set to the weighted value sum of coincidence line segment, first for two electric network fault line segments initial set is carried out space respectively with the line segment that overlaps ask difference to operate to obtain other line segments, other line segments keep weight constant, and coincidence line segment and other line segments finally form positioning result and export.
The above-mentioned order to the just joint account of initial set of interval type electric network fault line segment initial set electric network fault line segment has nothing to do, can arbitrary arrangement.
Then, carry out spatial weighting to the first initial set of all end points type electric network fault line segments to ask friendship, merge and staged operation, obtain extreme result weighting line-segment sets, wherein, end points type electric network fault line segment just initial set comprises the 4th electric network fault line segment just initial set and the 5th electric network fault line segment just initial set, but end points type electric network fault line segment just initial set is not limited to above-mentioned two kinds of electric network fault line segments just initial set, and concrete subprocess is as follows:
The weight of the connection line segment of initialization all end points types electric network fault line segment initial set is 0.5.
Carrying out space to the first initial set of the 4th electric network fault line segment and the first initial set of the 5th electric network fault line segment asks friendship to operate, coincidence line segment to be merged as independent line segment and weighted value is the weight sum of coincidence line section, first for 4th electric network fault line segment initial set and the first initial set of the 5th electric network fault line segment are carried out space respectively with the line segment that overlaps ask difference to operate to obtain other line segments, other line segments keep weight constant, and final formation second merges weighting line-segment sets.
If there is the electric network fault line segment just initial set of more than three in end points type electric network fault line segment just initial set, then above-mentioned second merging weighting line-segment sets and the first initial set of next electric network fault line segment being carried out space asks friendship to operate, each coincidence line segment that may exist merges as independent line segment and weighted value is the weight sum of coincidence line section, second merging weighting line-segment sets and the first initial set of next electric network fault line segment are carried out space respectively respectively with each line segment that overlaps ask difference to operate to obtain other line segments, other line segments keep weight constant, the second merging weighting line-segment sets that final formation is new.The first initial set of all electric network fault line segments repeats this step, until all take part in joint account.
When end points type electric network fault line segment initial set only exist an electric network fault line segment just initial set time, directly return the electric network fault line-segment sets after this weighting as positioning result.
The order of the above-mentioned opposite end point-type electric network fault line segment initial set electric network fault line segment just joint account of initial set has nothing to do, can arbitrary arrangement.All localization of fault results that can represent with line segment all can be expressed as interval type positioning result and end points 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, idiographic flow is as follows:
First merging weighting line-segment sets and the second merging weighting line-segment sets are carried out space asks friendship to operate, each coincidence line segment that may exist merges as independent line segment and weighted value is the weighted value sum on coincidence line road, first merging weighting line-segment sets and the second merging weighting line-segment sets are carried out space respectively with each line segment that overlaps ask difference to operate to obtain other line segments, other line segments keep weight constant, according to coincidence line segment and other line segments, obtain resultant fault weighting line-segment sets.
When there is discrete trouble spot, all off-line trouble spots and resultant fault weighting line-segment sets are compared, when discrete trouble spot in resultant fault weighting line-segment sets on certain line segment time, this circuit weighted value is added 1, upgrade the weight of resultant fault weighting line-segment sets middle conductor, preserve the incidence relation of this line segment and discrete trouble spot simultaneously.Wherein, discrete trouble spot comprises lightning fault point, but is not limited to lightning fault point, allly all can be expressed as discrete trouble spot with a localization of fault result represented.
Line segment in resultant fault weighting line-segment sets is sorted according to its weight, choose the line segment that one or more weighted value is the highest, if there is end to end situation between the line segment that multiple weighted value is the highest, then merged into a line segment, finally obtained electric network fault line-segment sets.
According to the discrete trouble spot on the line segment dropped in electric network fault line-segment sets, determine electric network fault point set.
Return and export electric network fault line-segment sets and electric network fault point set, when there is not discrete trouble spot, electric network fault point set is empty set.
When only there is the first merging weighting line-segment sets, merging weighting line-segment sets using first and exporting as electric network fault line-segment sets.
When only there is the second merging weighting line-segment sets, merging weighting line-segment sets using second and exporting as electric network fault line-segment sets.
The electric network fault synthesized positioning method that this specific embodiment provides, utilize the existing positioning result of the existing all kinds of electric network fault localization method of electrical network, when not setting up equipment, not changing its original system structure and locator meams, by carrying out spatial overlay analysis to all kinds of positioning result, thus reach the object improving electric network fault positioning precision.
Refer to Fig. 5, the present invention also provides a kind of electric network fault line segment Positioning System of embodiment, comprising:
Acquisition module 100, for obtaining multiple electric network fault line segment just initial set.
After grid collapses, determine that abort situation plays decisive role for the shortening breakdown repair time as early as possible, have multiple to the localization method of electric network fault, wherein, comprise the localization method of multiple localizing faults line segment, namely when grid collapses, determine the line segment that may break down.Corresponding positioning result can be obtained by each Fault Locating Method, multiple electric network fault line segment just initial set can be obtained, the set of the line segment that electric network fault line segment breaks down when just initial set refers to electric network fault, just may there is coincidence line segment between initial set in these electric network fault line segments, also may there is different faulted line segments.
Weighting block 200, for being weighted the faulted line segment of each electric network fault line segment initial set respectively.
The faulted line segment of each electric network fault line segment initial set obtained is to different when determining the influence degree of electric network fault result, thus need to be weighted the faulted line segment of each electric network fault line segment initial set, the weight of faulted line segment is larger, representing that this faulted line segment is to determining that the influence degree of electric network fault result is larger, is more likely electric network fault line segment.
Merge module 300, for merging each electric network fault line segment just initial set, and the weight of the coincidence line segment of each electric network fault line segment just between initial set being carried out cumulative with the weight upgrading coincidence line segment, obtaining resultant fault weighting line-segment sets.
After the faulted line segment of each electric network fault line segment initial set is weighted, comprehensively need analyze to the first initial set of each electric network fault line segment, because each electric network fault line segment just may exist coincidence line segment between initial set, thus the first initial set of each electric network fault line segment is merged, namely union process is done, and the weight of coincidence line segment is added up, the weight after cumulative is updated to the weight that the faulted line segment after merging concentrates this coincidence line segment, obtains resultant fault weighting line-segment sets.By above-mentioned merging and weight update process, make the weight of coincidence line segment increasing, the weight of non-coincidence line segment remains unchanged.
First determination module 400, for sorting according to weight to the faulted line segment in resultant fault weighting line-segment sets, obtain the ranking results of resultant fault weighting line-segment sets, choose the faulted line segment of the larger front predetermined number of weights in ranking results, determine electric network fault line-segment sets.
After to each electric network fault line segment, just initial set carries out above-mentioned merging and weight update process, the weight of the faulted line segment in resultant fault weighting line-segment sets determines, the line segment that coincidence number of times is more, its weight is larger, more can represent that this line segment is electric network fault line segment, thus the line segment in resultant fault weighting line-segment sets is sorted according to weight, weight is larger, sort more forward, expression line segment is that the possibility of electric network fault is larger, choose the line segment of the front predetermined number that weight is larger in the resultant fault weighting line-segment sets after sequence as electric network fault line-segment sets, thus electric network fault line segment aggregate can be determined, such as, choose the line segment of first 10 that in the resultant fault weighting line-segment sets after sequence, weight is larger as electric network fault line-segment sets.In the present embodiment, between the faulted line segment in the electric network fault line-segment sets determined, first place connects, then the faulted line segment in electric network fault line-segment sets is merged into a line segment.
Above-mentioned electric network fault line segment Positioning System, first respectively process is weighted to the faulted line segment of multiple electric network fault line segment initial set, merging treatment is being carried out to the first initial set of each electric network fault line segment after weighting, and the weight of the coincidence line segment of each electric network fault line segment just between initial set is carried out cumulative with the weight upgrading coincidence line segment, to obtain resultant fault weighting line-segment sets, by above-mentioned electric network fault Positioning System, the first initial set of the multiple electric network fault line segment of location is comprehensively analyzed, instead of only the first initial set of single faulted line segment is analyzed, the number of times that faulted line segment occurs in each faulted line segment initial set is more, its weight may be larger, represent and can navigate to this faulted line segment when being carried out localization of fault by multiple localization method, illustrate this faulted line segment be electric network fault line segment may be larger, in resultant fault weighting line-segment sets, the weight of faulted line segment is higher, expression faulted line segment is that the possibility of electric network fault line segment is larger, the faulted line segment that weight selection is larger from resultant fault weighting line-segment sets is as electric network fault line-segment sets, thus obtain the higher electric network fault positioning result of precision.
Refer to Fig. 6, wherein in an embodiment, electric network fault line segment just initial set comprises interval type electric network fault line segment just initial set and end points type electric network fault line segment just initial set.Acquisition module 100 comprises:
First acquiring unit 110, for positioning fault respectively by row ripple location, impedance location and fault detector location, acquisition and row ripple are located the first initial set of the first corresponding electric network fault line segment, locate the first initial set of the second corresponding electric network fault line segment with impedance and are located the 3rd corresponding electric network fault line segment just initial set with fault detector.
Wherein, just initial set, the first initial set of the second electric network fault line segment and the first initial set of the 3rd electric network fault line segment are interval type electric network fault line segment just initial set to the first electric network fault line segment.
Second acquisition unit 120, for positioning fault respectively by robotization switch location and outlet switch location, acquisition and robotization switch are located the first initial set of the 4th corresponding electric network fault line segment and are located the 5th corresponding electric network fault line segment just initial set with outlet switch.
Wherein, just initial set, the first initial set of the 5th electric network fault line segment are end points type electric network fault line segment just initial set to the 4th electric network fault line segment.
During grid collapses, have many to the method that fault positions, wherein, comprise row ripple location, impedance location, fault detector location, robotization switch location and outlet switch location.The positioning result obtained by these localization methods is initialization electric network fault line segment, such as, when electric network fault being positioned by travelling wave positioning method, the positioning result finally obtained is exactly the set of initialization electric network fault line segment, corresponding electric network fault line segment just initial set is obtained by above-mentioned often kind of Fault Locating Method, each electric network fault line segment just may have coincidence line section between initial set, represent the both a kind of electric network fault line segment initial set appearance wherein of this coincidence line segment, also occurred in another kind of electric network fault line segment initial set, or represent that this coincidence line segment has occurred in multiple electric network fault line segment initial set, thus follow-up to each electric network fault line segment just initial set do comprehensive analysis, instead of only the first initial set of a kind of electric network fault line segment is analyzed.
For impedance location, adopt fault recorder data, according to the abort situation of the impedance variation computational scheme that fault causes, thus possible initialization electric network fault line segment can be obtained.
Fault detector is located, fault detector is generally arranged on the intelligent apparatus of indication fault current path on power network line, when power network line breaks down, be in fault detector on faulty line by automatic board turning, indicate this line segment to break down with red colored lamp, thus initialization electric network fault line segment can be obtained.
For robotization switch location and outlet switch location, by arranging switch, when the grid collapses, switch motion, know the malfunctioning node in electrical network, all branch lines after node may break down, thus it can be used as the initialization electric network fault line segment that robotization switch is located and outlet switch is located.
Refer to Fig. 7, wherein in an embodiment, merge module 300 and comprise:
First merge cells 310, for just merging between two between initial set interval type electric network fault line segment, and the weight of the coincidence line segment of the interval type electric network fault line segment mutually merged just between initial set is added, to upgrade the weight of the coincidence line segment of interval type electric network fault line segment just between initial set mutually merged, obtain first and merge weighting line-segment sets.
Second merge cells 320, just merge between two between initial set for opposite end point-type electric network fault line segment, and the weight of the coincidence line segment of the end points type electric network fault line segment mutually merged just between initial set is added, to upgrade the weight of the coincidence line segment of end points type electric network fault line segment just between initial set mutually merged, obtain second and merge weighting line-segment sets.
3rd merge cells 330, weighting line-segment sets is merged for merging the first merging weighting line-segment sets and second, and the first merging weighting line-segment sets is added with the weight of the second line segment that overlaps merged between weighting line-segment sets, to upgrade the weight that the first merging weighting line-segment sets and second merges the line segment that overlaps between weighting line-segment sets, obtain resultant fault weighting line-segment sets.
In localization of fault process, the possibility being electric network fault line segment due to the first initial set of interval type electric network fault line segment and the first initial set of end points type electric network fault line segment is different, thus respectively weighting is separated and split and merge to all types of faulted line segment collection, again all types of faulted line segment collection weighting amalgamation result is merged, be conducive to all types of faulted line segment collection amalgamation result more accurate, thus make to determine that the accuracy of electric network fault line-segment sets is better.
Particularly, interval type electric network fault line segment initial set comprises the first electric network fault line segment just initial set, second electric network fault line segment is initial set and the 3rd electric network fault line segment just initial set just, first merge cells 310 is specifically for the first electric network fault line segment, just initial set and the first initial set of the second electric network fault line segment merge, and the weight of the overlap line segment of the first electric network fault line segment just between initial set with the first initial set of the second electric network fault line segment is added, to upgrade the weight of the overlap line segment of the first electric network fault line segment just between initial set with the first initial set of the second electric network fault line segment, obtaining portion is divided and is merged weighting line-segment sets, part merging weighting line-segment sets and the first initial set of the 3rd electric network fault line segment are merged, and the weight of the line segment that overlaps that part merges between weighting line-segment sets with the first initial set of the 3rd electric network fault line segment is added, the weight of the line segment that overlaps merged between weighting line-segment sets with the first initial set of the 3rd electric network fault line segment is divided with update section, obtain first and merge weighting line-segment sets.
In localization of fault process, the first electric network fault line segment just initial set, the second electric network fault line segment just initial set and the 3rd electric network fault line segment just initial set is obtained respectively by row ripple location, impedance location and fault detector location, the faulted line segment of these three kinds of electric network fault line segment initial set is expressed as the distance range of a certain base shaft tower to another base shaft tower of power network line, or be the distance range of a certain base shaft tower to measurement point, be spatially rendered as single line segment.First, two kinds of faulty line collection are carried out union process, and the weight of coincidence line section is upgraded, divide with obtaining portion and merge weighting line-segment sets, after above-mentioned two kinds of faulted line segment set also, again part merging weighting line-segment sets and the 3rd initialization electrical network kind faulted line segment collection are merged, and upgrade weight, to obtain the first merging weighting line-segment sets.Amalgamation result and the merge order of the first initial set of above-mentioned merging first electric network fault line segment, the first initial set of the second electric network fault line segment and the first initial set of the 3rd electric network fault line segment have nothing to do, can merge by arbitrary arrangement, such as, after also can first first for the second electric network fault line segment initial set and the first initial set of the 3rd electric network fault line segment being merged, first initial set merges with the first electric network fault line segment again.
Particularly, end points type electric network fault line segment initial set comprises the 4th electric network fault line segment just initial set and the 5th electric network fault line segment just initial set, second merge cells 320 is specifically for the 4th electric network fault line segment, just initial set and the first initial set of the 5th electric network fault line segment merge, and the weight of the overlap line segment of the 4th electric network fault line segment just between initial set with the first initial set of the 5th electric network fault line segment is added, to upgrade the 4th electric network fault line segment just initial set and the weight of the overlap line segment of the 5th electric network fault line segment just between initial set, obtain second and merge weighting line-segment sets.
In localization of fault process, located by robotization switch and outlet switch location acquisition the 4th electric network fault line segment just initial set and the 5th electric network fault line segment just initial set respectively, all branch lines that the faulted line segment of these two kinds of electric network fault line segment initial set is expressed as after certain node in power network line topological diagram may be all abort situation, are spatially rendered as the line segment of connection.
Faulted line segment collection after merging above-mentioned two kinds merges again, and upgrades coincidence line section weight, and to obtain resultant fault weighting line-segment sets, wherein, the weight of non-coincidence line segment remains unchanged.The merge order of above-mentioned first merge cells 310 and the second merge cells 320 can arbitrary arrangement.And the first merge cells 310 specifically also can arbitrary arrangement to order when initial set, the first initial set of the second electric network fault and the first initial set of the 3rd electrical network merge at the beginning of the first electric network fault.
In the present embodiment, when respectively the faulted line segment of each electric network fault line segment initial set being weighted, the weight of the faulted line segment of the first initial set of initialization first electric network fault line segment, the first initial set of the second electric network fault line segment and the 3rd electric network fault line segment initial set is 1, and the weight of the faulted line segment of the first initial set of initialization the 4th electric network fault line segment and the 5th electric network fault line segment initial set is 0.5.
In localization of fault process, first electric network fault line segment just initial set, the first initial set of the second electric network fault line segment and the first initial set of the 3rd electric network fault line segment is obtained by row ripple location, impedance location and fault detector location respectively, is the positioning result belonging to a type.4th electric network fault line segment just initial set and the first initial set of the 5th electric network fault line segment is located by robotization switch and the acquisition of outlet switch location respectively, it is the positioning result belonging to a type, the possibility being electric network fault line segment due to all types of positioning results is different, thus respectively weighting is separated and split and merge to all types of faulted line segment collection, again all types of weighting amalgamation results is merged, be conducive to all types of faulted line segment collection amalgamation results more accurate, thus make to determine that the accuracy of electric network fault line-segment sets is better.
Refer to Fig. 8, wherein in an embodiment, above-mentioned electric network fault line segment Positioning System also comprises:
Comparison module 340, for when discrete trouble spot having been detected, has compared discrete trouble spot and resultant fault weighting line-segment sets.
The weights of line segment corresponding with discrete trouble spot in resultant fault weighting line-segment sets, during for dropping on when discrete trouble spot on the line segment in resultant fault weighting line-segment sets, are added 1 by computing module 350.
Discrete trouble spot is expressed as discontinuous, discrete fault shaft tower, is spatially rendered as discrete point, and wherein, the positioning result obtained by lighting location is discrete point positioning result, is lightning fault point.In electric network fault type, the circuit lightning fault caused that suffers to be struck by lightning occupies larger proportion, along with the precision of lightning location system location improves constantly, and the means that lighting location also can improve as electric network fault positioning precision.
When electrical network is struck by lightning, lightning fault may be caused, when lightning fault point being detected, namely discrete trouble spot is detected, discrete trouble spot and above-mentioned resultant fault weighting line-segment sets are compared, judge whether discrete trouble spot is dropped in above-mentioned resultant fault weighting line-segment sets on certain line segment, when judged result is for being, the weight of line segment corresponding with discrete trouble spot in the above-mentioned resultant fault weighting line-segment sets dropped on discrete trouble spot adds 1, further, the possibility that this line segment is electric network fault line segment is strengthened.
Please continue to refer to Fig. 8, wherein in an embodiment, above-mentioned electric network fault line segment Positioning System also comprises:
Second determination module 500, for according to the discrete trouble spot on the line segment dropped in electric network fault line-segment sets, determines electric network fault point set.
Electric network fault line-segment sets is obtained after resultant fault weighting line-segment sets after sequence is screened, namely the line segment that some weights are told somebody what one's real intentions are is eliminated, if discrete trouble spot is also dropped on the line segment in electric network fault line-segment sets, then illustrate that this discrete trouble spot is very likely trouble spot, filtered out as electric network fault point, if discrete trouble spot is not dropped on the line segment in electric network fault line-segment sets, then this discrete trouble spot is got rid of, think that it is not electric network fault point, the positioning result of electric network fault is electric network fault line-segment sets and electric network fault point, the positioning result of electric network fault is exported, be supplied to repair personnel, repair personnel is according to positioning result, abort situation is found to rush to repair fast.
Each technical characteristic of above embodiment can combine arbitrarily, for making description succinct, all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this instructions is recorded.
Above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be construed as limiting the scope of the patent.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.

Claims (10)

1. an electric network fault line segment synthesized positioning method, is characterized in that, comprises the following steps:
Obtain multiple electric network fault line segment just initial set;
Respectively the faulted line segment of each described electric network fault line segment initial set is weighted;
Merge each described electric network fault line segment just initial set, and the weight of the coincidence line segment of each described electric network fault line segment just between initial set is carried out cumulative with the weight upgrading described coincidence line segment, obtain resultant fault weighting line-segment sets;
Faulted line segment in described resultant fault weighting line-segment sets is sorted according to weight, obtains the ranking results of described resultant fault weighting line-segment sets, choose the faulted line segment of the larger front predetermined number of weights in described ranking results, determine electric network fault line-segment sets.
2. electric network fault line segment synthesized positioning method according to claim 1, is characterized in that, the step of the first initial set of the multiple electric network fault line segment of described acquisition comprises:
Described electric network fault line segment just initial set comprises interval type electric network fault line segment just initial set and end points type electric network fault line segment just initial set;
Respectively by row ripple location, impedance location and fault detector location, fault is positioned, acquisition and described row ripple are located the first initial set of the first corresponding electric network fault line segment, locate the first initial set of the second corresponding electric network fault line segment with described impedance and are located the 3rd corresponding electric network fault line segment just initial set with described fault detector, and described first electric network fault line segment just initial set, the first initial set of described second electric network fault line segment and the first initial set of described 3rd electric network fault line segment is the first initial set of interval type electric network fault line segment;
Respectively by robotization switch location and outlet switch location, fault is positioned, acquisition and described robotization switch are located the first initial set of the 4th corresponding electric network fault line segment and are located the 5th corresponding electric network fault line segment just initial set with described outlet switch, and described 4th electric network fault line segment just initial set and the first initial set of described 5th electric network fault line segment is the first initial set of end points type electric network fault line segment.
3. electric network fault line segment synthesized positioning method according to claim 1 and 2, it is characterized in that, the each described electric network fault line segment of described merging is initial set just, and the weight of the coincidence line segment of each described electric network fault line segment just between initial set is carried out cumulative with the weight upgrading described coincidence line segment, the step obtaining resultant fault weighting line-segment sets comprises:
Described electric network fault line segment just initial set comprises interval type electric network fault line segment just initial set and end points type electric network fault line segment just initial set;
Described interval type electric network fault line segment is just merged between initial set between two, and the weight of the coincidence line segment of the described interval type electric network fault line segment mutually merged just between initial set is added, to upgrade the weight of the coincidence line segment of interval type electric network fault line segment just between initial set of described mutual merging, obtain first and merge weighting line-segment sets;
Described end points type electric network fault line segment is just merged between initial set between two, and the weight of the coincidence line segment of the described end points type electric network fault line segment mutually merged just between initial set is added, to upgrade the weight of the coincidence line segment of end points type electric network fault line segment just between initial set of described mutual merging, obtain second and merge weighting line-segment sets;
Merge described first merging weighting line-segment sets and described second and merge weighting line-segment sets, and described first merging weighting line-segment sets is added with the weight of the described second line segment that overlaps merged between weighting line-segment sets, to upgrade the weight that described first merging weighting line-segment sets and described second merges the line segment that overlaps between weighting line-segment sets, obtain described resultant fault weighting line-segment sets.
4. electric network fault line segment synthesized positioning method according to claim 1, it is characterized in that, described line segment in described resultant fault weighting line-segment sets to be sorted according to weight, obtain the ranking results of described resultant fault weighting line-segment sets, choose the faulted line segment of the larger front predetermined number of weights in described ranking results, also comprise before determining the step of electric network fault line-segment sets:
When discrete trouble spot having been detected, described discrete trouble spot and described resultant fault weighting line-segment sets are compared;
When described discrete trouble spot is dropped on the line segment in described resultant fault weighting line-segment sets, the weights of the described line segment corresponding with described discrete trouble spot in described resultant fault weighting line-segment sets are added 1.
5. electric network fault line segment synthesized positioning method according to claim 4, it is characterized in that, described line segment in described resultant fault weighting line-segment sets to be sorted according to weight, obtain the ranking results of described resultant fault weighting line-segment sets, choose the faulted line segment of the larger front predetermined number of weights in described ranking results, also comprise after determining the step of electric network fault line-segment sets:
According to the described discrete trouble spot on the line segment dropped in described electric network fault line-segment sets, determine electric network fault point set.
6. an electric network fault line segment Positioning System, is characterized in that, comprising:
Acquisition module, for obtaining multiple electric network fault line segment just initial set;
Weighting block, for being weighted the faulted line segment of each described electric network fault line segment initial set respectively;
Merge module, for merging each described electric network fault line segment just initial set, and the weight of the coincidence line segment of each described electric network fault line segment just between initial set being carried out cumulative with the weight upgrading described coincidence line segment, obtaining resultant fault weighting line-segment sets;
First determination module, for sorting according to weight to the faulted line segment in described resultant fault weighting line-segment sets, obtain the ranking results of described resultant fault weighting line-segment sets, choose the faulted line segment of the larger front predetermined number of weights in described ranking results, determine electric network fault line-segment sets.
7. electric network fault line segment Positioning System according to claim 6, is characterized in that, described electric network fault line segment just initial set comprises interval type electric network fault line segment just initial set and end points type electric network fault line segment just initial set;
Described acquisition module comprises:
First acquiring unit, for positioning fault respectively by row ripple location, impedance location and fault detector location, acquisition and described row ripple are located the first initial set of the first corresponding electric network fault line segment, locate the first initial set of the second corresponding electric network fault line segment with described impedance and are located the 3rd corresponding electric network fault line segment just initial set with described fault detector, and described first electric network fault line segment just initial set, the first initial set of described second electric network fault line segment and the first initial set of described 3rd electric network fault line segment is the first initial set of interval type electric network fault line segment;
Second acquisition unit, for positioning fault respectively by robotization switch location and outlet switch location, acquisition and described robotization switch are located the first initial set of the 4th corresponding electric network fault line segment and are located the 5th corresponding electric network fault line segment just initial set with described outlet switch, and described 4th electric network fault line segment just initial set, the first initial set of described 5th electric network fault line segment is the first initial set of end points type electric network fault line segment.
8. the electric network fault line segment Positioning System according to claim 6 or 7, is characterized in that, described electric network fault line segment just initial set comprises interval type electric network fault line segment just initial set and end points type electric network fault line segment just initial set;
Described merging module comprises:
First merge cells, for just merging between two between initial set described interval type electric network fault line segment, and the weight of the coincidence line segment of the described interval type electric network fault line segment mutually merged just between initial set is added, to upgrade the weight of the coincidence line segment of interval type electric network fault line segment just between initial set of described mutual merging, obtain first and merge weighting line-segment sets;
Second merge cells, for just merging between two between initial set described end points type electric network fault line segment, and the weight of the coincidence line segment of the described end points type electric network fault line segment mutually merged just between initial set is added, to upgrade the weight of the coincidence line segment of end points type electric network fault line segment just between initial set of described mutual merging, obtain second and merge weighting line-segment sets;
3rd merge cells, weighting line-segment sets is merged for merging described first merging weighting line-segment sets and described second, and described first merging weighting line-segment sets is added with the weight of the described second line segment that overlaps merged between weighting line-segment sets, to upgrade the weight that described first merging weighting line-segment sets and described second merges the line segment that overlaps between weighting line-segment sets, obtain described resultant fault weighting line-segment sets.
9. electric network fault line segment Positioning System according to claim 6, is characterized in that, also comprise:
Comparison module, for when discrete trouble spot having been detected, has compared described discrete trouble spot and described resultant fault weighting line-segment sets;
The weights of described line segment corresponding with described discrete trouble spot in described resultant fault weighting line-segment sets, during for dropping on when described discrete trouble spot on the line segment in described resultant fault weighting line-segment sets, are added 1 by computing module.
10. electric network fault line segment Positioning System according to claim 9, is characterized in that, also comprise:
Second determination module, for according to the described discrete trouble spot on the line segment dropped in described electric network fault line-segment sets, determines electric network fault point set.
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