CN116626540B - Method, system, terminal and storage medium for judging broken line fault interval - Google Patents
Method, system, terminal and storage medium for judging broken line fault interval Download PDFInfo
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- 238000009826 distribution Methods 0.000 claims abstract description 173
- 230000002159 abnormal effect Effects 0.000 claims abstract description 113
- 238000012216 screening Methods 0.000 claims abstract description 21
- 230000005611 electricity Effects 0.000 claims description 8
- 238000004590 computer program Methods 0.000 claims description 6
- 230000002547 anomalous effect Effects 0.000 claims 1
- 238000003745 diagnosis Methods 0.000 abstract description 2
- 230000006870 function Effects 0.000 description 11
- 238000004891 communication Methods 0.000 description 6
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Classifications
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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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/54—Testing for continuity
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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
- G01R31/085—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution lines, e.g. overhead
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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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/58—Testing of lines, cables or conductors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
Abstract
The invention relates to the technical field of distribution line fault diagnosis, and particularly provides a distribution line disconnection fault interval judging method, a system, a terminal and a storage medium, wherein the method comprises the following steps: acquiring fault bus information and acquiring electrical data of all power distribution equipment on a power distribution line carried by a fault bus; screening out abnormal data in the electrical data by comparing the abnormal data with a standard threshold value; positioning a connecting line of the power distribution equipment to which the abnormal data belong as an abnormal line; analyzing target power distribution equipment and an in-station switch on an abnormal line based on a power grid topological structure, and acquiring the distance between the target power distribution equipment and the in-station switch; and selecting node equipment from the target power distribution equipment based on the distance and the electrical data of the target power distribution equipment, and judging a line between the node equipment as a fault interval. When the invention determines the broken line fault section of the distribution line, the invention realizes the determination of the broken line fault section of the distribution line with lower cost on the premise of only using the prior equipment, thereby saving the cost of manpower and material resources.
Description
Technical Field
The invention relates to the technical field of distribution line fault diagnosis, and particularly provides a distribution line disconnection fault interval judging method, a system, a terminal and a storage medium.
Background
The distribution network is an important component of the construction of the Chinese power grid, and has the function of supplying power to each distribution station and various power loads in the city. The distribution line has wide distribution range and long total length, the operation environment is bad, the disconnection fault is very easy to occur due to lightning strike, external force action and line load overload in the actual operation process, after the disconnection fault occurs, the line voltage at the rear section of the distribution line is abnormal, a single-phase load user connected to a fault phase loses power, and a three-phase load user motor cannot operate. In addition, various ground faults are easy to occur after the wire breakage, and great harm is caused to social production and life.
The existing distribution line disconnection fault interval judging method cannot fully cope with the situation, and the requirement of rapid development of a distribution network cannot be met. For the convenience of maintenance and convenience of finding fault points, the power enterprises install various pole-mounted switches with relay protection functions at different positions of the distribution circuit, collect the electric quantity of the circuit at the position through the pole-mounted switches, input the electric quantity into the controller for calculation, and judge whether the post-stage circuit of the pole-mounted switch has faults. The mode needs to install a large number of pole-mounted switches on the power distribution line, and the pole-mounted switches can be put into operation after being debugged, so that a large amount of manpower and material resources are consumed.
At present, a method for judging the broken line fault interval of the distribution line is not provided, so that the broken line fault interval of the distribution line can be judged by using the existing device on the premise of not installing new equipment.
Disclosure of Invention
The invention provides a distribution line disconnection fault interval judging method, a system, a terminal and a storage medium for solving the technical problems.
In a first aspect, the present invention provides a method for determining a broken fault section of a distribution line, including:
acquiring fault bus information, and acquiring electrical data of all distribution equipment on a distribution line carried by a fault bus according to the fault bus information;
screening out abnormal data in the electrical data by comparing the abnormal data with a standard threshold value;
positioning a connecting line of the power distribution equipment to which the abnormal data belong as an abnormal line;
analyzing target power distribution equipment and an in-station switch on an abnormal line based on a power grid topological structure, and acquiring the distance between the target power distribution equipment and the in-station switch;
and selecting node equipment from the target power distribution equipment based on the distance and the electrical data of the target power distribution equipment, and judging a line between the node equipment as a fault interval.
In an alternative embodiment, collecting electrical data for all power distribution equipment on a power distribution line carried by a faulty bus includes:
extracting position information of a fault bus, and determining a power distribution circuit carried by the fault bus according to the position information;
and sending an instruction to an electricity acquisition system to call the electrical data of all the distribution equipment on the distribution line.
In an alternative embodiment, screening out abnormal data in the electrical data by comparing with a standard threshold value includes:
setting a voltage coefficient, and calculating the product of standard voltage and the voltage coefficient when the power distribution equipment normally operates;
calculating the sum of the standard voltage and the product to obtain the upper limit value of the standard voltage range;
calculating the difference between the standard voltage and the product to obtain the lower limit value of the standard voltage range;
and screening out the voltage exceeding the standard voltage range from the electrical data as abnormal data.
In an alternative embodiment, locating a connection line of a power distribution device to which abnormal data belongs as an abnormal line includes:
counting the quantity of abnormal data of each line;
and comparing the quantity of the abnormal data of all distribution lines carried by the fault bus, and judging the line with the largest quantity of the abnormal data as the abnormal line.
In an alternative embodiment, the method for obtaining the distance between the target power distribution device and the in-station switch based on the power grid topological structure analysis of the target power distribution device and the in-station switch on the abnormal line includes:
analyzing the position information of the in-station switch and the target power distribution equipment on the abnormal line based on the power grid topological structure;
and calculating the distance between each power distribution device and the switch in the station based on the position information.
In an alternative embodiment, selecting node devices from the target power distribution devices based on the distance and the electrical data of the target power distribution devices, and determining the line between the node devices as a fault interval, includes:
comparing the distances between all the normal transformers and the switches in the station, wherein the normal transformer with the largest distance is the target normal transformer;
comparing the distances between all transformers to which the abnormal data belong and the switches in the station, wherein the abnormal transformer with the smallest distance is the target abnormal transformer;
and judging that the line between the target normal transformer and the target abnormal transformer is a fault interval.
In a second aspect, the present invention provides a distribution line disconnection fault section determination system, including:
the electric data acquisition module is used for acquiring fault bus information and acquiring electric data of all power distribution equipment on a power distribution line carried by the fault bus according to the fault bus information;
the abnormal data screening module is used for screening abnormal data in the electrical data by comparing the abnormal data with a standard threshold value;
the abnormal line positioning module is used for positioning the connecting line of the power distribution equipment to which the abnormal data belong as an abnormal line;
the distance acquisition module is used for analyzing the target power distribution equipment and the in-station switch on the abnormal line based on the power grid topological structure and acquiring the distance between the target power distribution equipment and the in-station switch;
and the fault interval judging module is used for selecting node equipment from the target power distribution equipment based on the distance and the electrical data of the target power distribution equipment, and judging the line between the node equipment as a fault interval.
In an alternative embodiment, the electrical data acquisition module includes:
the distribution line determining unit is used for extracting the position information of the fault bus and determining the distribution line carried by the fault bus according to the position information;
and the data acquisition unit is used for sending an instruction to the electricity acquisition system and calling the electrical data of all the power distribution equipment on the power distribution line.
In an alternative embodiment, the abnormal data screening module includes:
the coefficient setting unit is used for setting a voltage coefficient and calculating the product of the standard voltage and the voltage coefficient when the power distribution equipment normally operates;
the first limit value determining unit is used for calculating the sum of the standard voltage and the product to obtain the upper limit value of the standard voltage range;
the second limit value determining unit is used for calculating the difference between the standard voltage and the product to obtain the lower limit value of the standard voltage range;
and the data screening unit is used for screening out the voltage exceeding the standard voltage range from the electrical data as abnormal data.
In an alternative embodiment, the abnormal line locating module includes:
an abnormal data statistics unit for counting the number of abnormal data of each line;
and the abnormal data quantity comparison unit is used for comparing the quantity of abnormal data of all distribution lines carried by the fault bus and judging the line with the largest quantity of abnormal data as an abnormal line.
In an alternative embodiment, the distance acquisition module includes:
the position information acquisition unit is used for analyzing the position information of the in-station switch and the target power distribution equipment on the line based on the power grid topological structure;
and a node distance calculating unit for calculating the distance between each distribution equipment and the switch in the station based on the position information.
In an alternative embodiment, the failure interval determination module includes:
the first distance comparison unit is used for comparing the distances between all the normal transformers and the switches in the station, and the normal transformer with the largest distance is the target normal transformer;
the second distance comparison unit is used for comparing the distances between all transformers to which the abnormal data belong and the switches in the station, and the abnormal transformer with the smallest distance is the target abnormal transformer;
and the fault interval determining unit is used for determining that the line between the target normal transformer and the target abnormal transformer is a fault interval.
In a third aspect, a terminal is provided, including:
a processor, a memory, wherein,
the memory is used for storing a computer program,
the processor is configured to call and run the computer program from the memory, so that the terminal performs the method of the terminal as described above.
In a fourth aspect, there is provided a computer storage medium having instructions stored therein which, when run on a computer, cause the computer to perform the method of the above aspects.
The method, the system, the terminal and the storage medium for judging the broken line fault section of the distribution line have the advantages that when the broken line fault section of the distribution line is judged and processed, on the premise that existing equipment is only utilized and a new device is not added, the method is lower in cost and more convenient to implement, the broken line fault section of the distribution line with low cost is judged to be possible, the cost of manpower and material resources is saved, and especially when the distribution line length is increased and the structure is more complex at present, the line inspection efficiency of the broken line fault of the distribution line is greatly improved.
In addition, the invention has reliable design principle, simple structure and very wide application prospect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a schematic flow chart of a method of one embodiment of the invention.
Fig. 2 is another schematic flow chart of a method of one embodiment of the invention.
FIG. 3 is a schematic block diagram of a system of one embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The following explains key terms appearing in the present invention.
DMS (Distribution Management System) distribution automation management system is a comprehensive automation system which meets the modern management requirements of distribution networks. The system comprises a basic platform and a plurality of relatively independent application subsystems running on the basic platform, wherein the basic platform can provide basic services such as a database system, information transmission, a man-machine interface, a real-time environment and interfaces with other systems besides basic hardware and operating system kernels.
The distribution line disconnection fault interval judging method provided by the embodiment of the invention is executed by the computer equipment, and correspondingly, the distribution line disconnection fault interval judging system operates in the computer equipment.
FIG. 1 is a schematic flow chart of a method of one embodiment of the invention. The execution body of fig. 1 may be a distribution line disconnection fault section determination system. The order of the steps in the flow chart may be changed and some may be omitted according to different needs.
As shown in fig. 1, the method includes:
step 110, obtaining fault bus information, and collecting electrical data of all power distribution equipment on a power distribution line carried by a fault bus according to the fault bus information;
step 120, screening out abnormal data in the electrical data by comparing the abnormal data with a standard threshold;
step 130, positioning the connection line of the power distribution equipment to which the abnormal data belong as an abnormal line;
and 140, analyzing the target power distribution equipment and the in-station switch on the abnormal line based on the power grid topological structure, and acquiring the distance between the target power distribution equipment and the in-station switch.
And step 150, selecting node equipment from the target power distribution equipment based on the distance and the electrical data of the target power distribution equipment, and judging the line between the node equipment as a fault interval.
In order to facilitate understanding of the present invention, the principle of the method for determining a broken line fault section of a distribution line according to the present invention is used to further describe the method for determining a broken line fault section of a distribution line according to the present invention in combination with a process for determining a broken line fault section of a distribution line in an embodiment.
Specifically, referring to fig. 2, the method for determining the broken fault section of the distribution line includes:
s1, acquiring fault bus information, and acquiring electrical data of all power distribution equipment on a power distribution line carried by a fault bus according to the fault bus information.
Extracting position information of a fault bus, and determining a power distribution circuit carried by the fault bus according to the position information; and sending an instruction to an electricity acquisition system to call the electrical data of all the distribution equipment on the distribution line.
For example, whether a section of bus fails or not can be judged by the existing distribution network broken line fault identification method or zero sequence quantity monitoring method based on negative sequence voltage and current characteristics, the judgment of the bus faults is continuously carried out, and specific judgment of a distribution line fault section carried by the bus is carried out after the bus faults are detected.
In the determination of the fault section, a distribution line disconnection fault section judging system firstly acquires position information of a fault bus, and judges that a distribution line carried by the fault bus comprises a line a, a line b, a line c and a line … according to the position information; the judging system sends an instruction to the electricity acquisition system to acquire electric data (such as voltage) of the power distribution equipment (such as a transformer) on the target line acquired by the electricity acquisition system, wherein the electric data is measured by the electric energy meter with a communication function.
S2, comparing the electrical data with a standard threshold value to screen out abnormal data in the electrical data.
Setting a voltage coefficient, and calculating the product of standard voltage and the voltage coefficient when the power distribution equipment normally operates; calculating the sum of the standard voltage and the product to obtain the upper limit value of the standard voltage range; calculating the difference between the standard voltage and the product to obtain the lower limit value of the standard voltage range; and screening out the voltage exceeding the standard voltage range from the electrical data as abnormal data.
For example, the obtained voltage data is screened, a voltage coefficient is set first, and standard voltage during normal operation of the power distribution equipment is calculated. If the voltage coefficient is set to be 0.1, the normal operation standard voltage of the distribution transformer in the 10kV distribution line is 6kV, the voltage value is calculated, the sum of the standard voltage and the product is 6.6kV which is the upper limit value of the standard voltage range, the subtraction of the standard voltage and the product is the lower limit value of the standard voltage range, and the voltage data exceeding the range are screened to be abnormal data.
S3, positioning the connection line of the power distribution equipment to which the abnormal data belong as an abnormal line.
Counting the quantity of abnormal data of each line; and comparing the quantity of the abnormal data of all distribution lines carried by the fault bus, and judging the line with the largest quantity of the abnormal data as the abnormal line.
For example, the abnormal data amounts on the distribution lines a, b, c … carried by the fault bus are counted and compared, and if the abnormal voltage data of one line b is the largest, the line b is judged to be the fault line, and the other lines are normal lines.
S4, analyzing the target power distribution equipment and the in-station switch on the abnormal line based on the power grid topological structure, and acquiring the distance between the target power distribution equipment and the in-station switch.
Analyzing the position information of the in-station switch and the target power distribution equipment on the line based on a power grid topological structure; and calculating the distance between each power distribution device and the switch in the station based on the position information.
For example, the position of the line b is a fault line, the position information of the in-station switch and the distribution equipment on the line b is analyzed, and the distance between each distribution equipment and the in-station switch is calculated according to the position information.
And S5, selecting node equipment from the target power distribution equipment based on the distance and the electrical data of the target power distribution equipment, and judging the line between the node equipment as a fault interval.
Comparing the distances between all the normal transformers and the switches in the station, wherein the normal transformer with the largest distance is the target normal transformer; comparing the distances between all transformers to which the abnormal data belong and the switches in the station, wherein the abnormal transformer with the smallest distance is the target abnormal transformer; and judging that the line between the target normal transformer and the target abnormal transformer is a fault interval.
For example, the calculated distances are compared with the electrical data of the distribution transformers to find the normal distribution transformer β1 farthest from the switch in the station and the abnormal distribution transformer β2 closest to the switch in the station, and the disconnection interval is determined to be between β1 and β2.
In some embodiments, the distribution line break fault interval determination system 300 may include a plurality of functional modules comprised of computer program segments. The computer program of each program segment in the distribution line disconnection fault section determination system 300 may be stored in a memory of a computer device and executed by at least one processor to perform the functions of distribution line disconnection fault section determination (described in detail with reference to fig. 1).
In this embodiment, the distribution line disconnection fault section determination system 300 may be divided into a plurality of functional modules according to the functions performed by the system, as shown in fig. 3. The functional module may include: the system comprises an electrical data acquisition module 310, an abnormal data screening module 320, an abnormal line locating module 330, a distance acquisition module 340 and a fault interval judging module 350. The module referred to in the present invention refers to a series of computer program segments capable of being executed by at least one processor and of performing a fixed function, stored in a memory. In the present embodiment, the functions of the respective modules will be described in detail in the following embodiments.
The electrical data acquisition module 310 is configured to acquire fault bus information, and acquire electrical data of all power distribution devices on a power distribution line carried by a fault bus according to the fault bus information;
the abnormal data screening module 320 is configured to screen abnormal data in the electrical data by comparing the abnormal data with a standard threshold;
an abnormal line locating module 330, configured to locate a connection line of the power distribution device to which the abnormal data belongs as an abnormal line;
the distance obtaining module 340 is configured to analyze the target power distribution device and the in-station switch on the abnormal line based on the power grid topology structure, and obtain the distance between the target power distribution device and the in-station switch;
the fault section determining module 350 is configured to select node devices from the target power distribution devices based on the distance and the electrical data of the target power distribution devices, and determine a line between the node devices as a fault section.
Optionally, as an embodiment of the present invention, the electrical data acquisition module includes:
the distribution line determining unit is used for extracting the position information of the fault bus and determining the distribution line carried by the fault bus according to the position information;
and the data acquisition unit is used for sending an instruction to the electricity acquisition system and calling the electrical data of all the power distribution equipment on the power distribution line.
Optionally, as an embodiment of the present invention, the abnormal data screening module includes:
the coefficient setting unit is used for setting a voltage coefficient and calculating the product of the standard voltage and the voltage coefficient when the power distribution equipment normally operates;
the first limit value determining unit is used for calculating the sum of the standard voltage and the product to obtain the upper limit value of the standard voltage range;
the second limit value determining unit is used for calculating the difference between the standard voltage and the product to obtain the lower limit value of the standard voltage range;
and the data screening unit is used for screening out the voltage exceeding the standard voltage range from the electrical data as abnormal data.
Optionally, as an embodiment of the present invention, the abnormal line locating module includes:
an abnormal data statistics unit for counting the number of abnormal data of each line;
and the abnormal data quantity comparison unit is used for comparing the quantity of abnormal data of all distribution lines carried by the fault bus and judging the line with the largest quantity of abnormal data as an abnormal line.
Optionally, as an embodiment of the present invention, the distance acquisition module includes:
the position information acquisition unit is used for analyzing the position information of the in-station switch and the target power distribution equipment on the line based on the power grid topological structure;
and a node distance calculating unit for calculating the distance between each distribution equipment and the switch in the station based on the position information.
Optionally, as an embodiment of the present invention, the fault interval determination module includes:
the first distance comparison unit is used for comparing the distances between all the normal transformers and the switches in the station, and the normal transformer with the largest distance is the target normal transformer;
the second distance comparison unit is used for comparing the distances between all transformers to which the abnormal data belong and the switches in the station, and the abnormal transformer with the smallest distance is the target abnormal transformer;
and the fault interval determining unit is used for determining that the line between the target normal transformer and the target abnormal transformer is a fault interval.
Fig. 4 is a schematic structural diagram of a terminal 400 according to an embodiment of the present invention, where the terminal 400 may be used to execute the method for determining a disconnection fault interval of a distribution line according to the embodiment of the present invention.
The terminal 400 may include: processor 410, memory 420, and communication module 430. The components may communicate via one or more buses, and it will be appreciated by those skilled in the art that the configuration of the server as shown in the drawings is not limiting of the invention, as it may be a bus-like structure, a star-like structure, or include more or fewer components than shown, or may be a combination of certain components or a different arrangement of components.
The memory 420 may be used to store instructions for execution by the processor 410, and the memory 420 may be implemented by any type of volatile or nonvolatile memory terminal or combination thereof, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk. The execution of the instructions in memory 420, when executed by processor 410, enables terminal 400 to perform some or all of the steps in the method embodiments described below.
The processor 410 is a control center of the storage terminal, connects various parts of the entire electronic terminal using various interfaces and lines, and performs various functions of the electronic terminal and/or processes data by running or executing software programs and/or modules stored in the memory 420, and invoking data stored in the memory. The processor may be comprised of an integrated circuit (Integrated Circuit, simply referred to as an IC), for example, a single packaged IC, or may be comprised of a plurality of packaged ICs connected to the same function or different functions. For example, the processor 410 may include only a central processing unit (Central Processing Unit, simply CPU). In the embodiment of the invention, the CPU can be a single operation core or can comprise multiple operation cores.
And a communication module 430, configured to establish a communication channel, so that the storage terminal can communicate with other terminals. Receiving user data sent by other terminals or sending the user data to other terminals.
The present invention also provides a computer storage medium in which a program may be stored, which program may include some or all of the steps in the embodiments provided by the present invention when executed. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), a random-access memory (random access memory, RAM), or the like.
Therefore, when the invention judges and processes the broken line fault section of the distribution line, the invention has a method with lower cost and more convenient implementation mode on the premise of only using the existing equipment and not adding a new device, thereby enabling the judgment of the broken line fault section of the distribution line with low cost to be possible and saving the cost of manpower and material resources. The technical effects achieved by this embodiment may be referred to above, and will not be described herein.
It will be apparent to those skilled in the art that the techniques of embodiments of the present invention may be implemented in software plus a necessary general purpose hardware platform. Based on such understanding, the technical solution in the embodiments of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium such as a U-disc, a mobile hard disc, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk or an optical disk, etc. various media capable of storing program codes, including several instructions for causing a computer terminal (which may be a personal computer, a server, or a second terminal, a network terminal, etc.) to execute all or part of the steps of the method described in the embodiments of the present invention.
The same or similar parts between the various embodiments in this specification are referred to each other. In particular, for the terminal embodiment, since it is substantially similar to the method embodiment, the description is relatively simple, and reference should be made to the description in the method embodiment for relevant points.
In the several embodiments provided by the present invention, it should be understood that the disclosed systems and methods may be implemented in other ways. For example, the system embodiments described above are merely illustrative, e.g., the division of the modules is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple modules or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with respect to each other may be through some interface, indirect coupling or communication connection of systems or modules, electrical, mechanical, or other form.
The modules described as separate components may or may not be physically separate, and components shown as modules may or may not be physical modules, i.e., may be located in one place, or may be distributed over a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional module in each embodiment of the present invention may be integrated into one processing module, or each module may exist alone physically, or two or more modules may be integrated into one module.
Although the present invention has been described in detail by way of preferred embodiments with reference to the accompanying drawings, the present invention is not limited thereto. Various equivalent modifications and substitutions may be made in the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and it is intended that all such modifications and substitutions be within the scope of the present invention/be within the scope of the present invention as defined by the appended claims. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The utility model provides a distribution line broken line fault interval decision method which is characterized in that the method comprises the following steps:
acquiring fault bus information, and acquiring electrical data of all distribution equipment on a distribution line carried by a fault bus according to the fault bus information;
screening out abnormal data in the electrical data by comparing the abnormal data with a standard threshold value;
positioning a connecting line of the power distribution equipment to which the abnormal data belong as an abnormal line;
analyzing target power distribution equipment and an in-station switch on an abnormal line based on a power grid topological structure, and acquiring the distance between the target power distribution equipment and the in-station switch;
selecting node equipment from the target power distribution equipment based on the distance and the electrical data of the target power distribution equipment, and judging a line between the node equipment as a fault interval, wherein the method comprises the following steps:
comparing the distances between all the normal transformers and the switches in the station, wherein the normal transformer with the largest distance is the target normal transformer;
comparing the distances between all transformers to which the abnormal data belong and the switches in the station, wherein the abnormal transformer with the smallest distance is the target abnormal transformer;
and judging that the line between the target normal transformer and the target abnormal transformer is a fault interval.
2. The method of claim 1, wherein collecting electrical data for all power distribution equipment on a power distribution line carried by the faulty bus comprises:
extracting position information of a fault bus, and determining a power distribution circuit carried by the fault bus according to the position information;
and sending an instruction to an electricity acquisition system to call the electrical data of all the distribution equipment on the distribution line.
3. The method of claim 1, wherein screening out anomalous data in the electrical data by comparing to a standard threshold comprises:
setting a voltage coefficient, and calculating the product of standard voltage and the voltage coefficient when the power distribution equipment normally operates;
calculating the sum of the standard voltage and the product to obtain the upper limit value of the standard voltage range;
calculating the difference between the standard voltage and the product to obtain the lower limit value of the standard voltage range;
and screening out the voltage exceeding the standard voltage range from the electrical data as abnormal data.
4. The method according to claim 1, wherein locating the connection line of the power distribution equipment to which the abnormal data belongs as an abnormal line includes:
counting the quantity of abnormal data of each line;
and comparing the quantity of the abnormal data of all distribution lines carried by the fault bus, and judging the line with the largest quantity of the abnormal data as the abnormal line.
5. The method of claim 1, wherein resolving the target power distribution device and the in-station switch on the anomaly line based on the grid topology, obtaining the distance of the target power distribution device from the in-station switch, comprises:
analyzing the position information of the in-station switch and the target power distribution equipment on the abnormal line based on the power grid topological structure;
and calculating the distance between each power distribution device and the switch in the station based on the position information.
6. A distribution line disconnection fault section determination system for executing the distribution line disconnection fault section determination method of claims 1 to 5, characterized by comprising:
the electric data acquisition module is used for acquiring fault bus information and acquiring electric data of all power distribution equipment on a power distribution line carried by the fault bus according to the fault bus information;
the abnormal data screening module is used for screening abnormal data in the electrical data by comparing the abnormal data with a standard threshold value;
the abnormal line positioning module is used for positioning the connecting line of the power distribution equipment to which the abnormal data belong as an abnormal line;
the distance acquisition module is used for analyzing the target power distribution equipment and the in-station switch on the abnormal line based on the power grid topological structure and acquiring the distance between the target power distribution equipment and the in-station switch;
and the fault interval judging module is used for selecting node equipment from the target power distribution equipment based on the distance and the electrical data of the target power distribution equipment, and judging the line between the node equipment as a fault interval.
7. The system of claim 6, wherein the electrical data acquisition module comprises:
the distribution line determining unit is used for extracting the position information of the fault bus and determining the distribution line carried by the fault bus according to the position information;
and the data acquisition unit is used for sending an instruction to the electricity acquisition system and calling the electrical data of all the power distribution equipment on the power distribution line.
8. A terminal, comprising:
the memory is used for storing the electrical data acquired by the distribution line disconnection fault interval judgment system;
a processor for implementing the steps of the distribution line disconnection fault section determination system method according to any one of claims 1-5 when executing the distribution line disconnection fault section determination program.
9. A computer readable storage medium storing a computer program, wherein the readable storage medium stores thereon a distribution line disconnection fault section determination program, which when executed by a processor, implements the steps of the distribution line disconnection fault section determination method according to any of claims 1-5.
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