CN112083277A - Power line transmission fault detection method and system - Google Patents
Power line transmission fault detection method and system Download PDFInfo
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- CN112083277A CN112083277A CN202010851500.1A CN202010851500A CN112083277A CN 112083277 A CN112083277 A CN 112083277A CN 202010851500 A CN202010851500 A CN 202010851500A CN 112083277 A CN112083277 A CN 112083277A
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
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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
- G01R31/52—Testing for short-circuits, leakage current or ground faults
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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
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Abstract
The invention provides a method and a system for detecting transmission faults of a power line, wherein the method comprises the following steps: s1, arranging a plurality of sampling points on each power transmission line; s2, when the power line runs normally, setting each sampling point to acquire running parameters, and storing the running parameters as normal running samples in a database; s3, simulating a power line fault, setting each sampling point to acquire operation parameters, and storing the operation parameters as fault samples of corresponding types in a database; and S4, when the power transmission line has a fault, setting each sampling point to acquire real-time operation parameters, matching and comparing the real-time operation parameters with the normal operation samples and the fault samples of each type in the database, and judging the fault transmission line and the fault point. When the power transmission line is in fault, the invention realizes the quick positioning of the fault power transmission line and the fault point, avoids the heavy task of operation and maintenance personnel for searching the transmission line and improves the fault processing efficiency of the power transmission line.
Description
Technical Field
The invention belongs to the technical field of power line fault detection, and particularly relates to a power line transmission fault detection method and system.
Background
With the expansion of the power grid scale, the data volume of the power transmission line is more and more, and the transmission fault of the power line is correspondingly more and more. In the case of a huge power transmission line, not only a faulty power line needs to be found, but also a fault point of the transmission line needs to be located, so as to prepare for solving the fault of the power transmission line in the next step. The existing mode is that operation and maintenance personnel verify one by one according to experience, the time consumption is long, the error is large, and the task is heavy. How to quickly find out a fault power line and accurately locate a fault point is a problem which needs to be solved urgently at present.
Therefore, it is very necessary to provide a method and a system for detecting transmission faults of a power line to overcome the above-mentioned drawbacks in the prior art.
Disclosure of Invention
The invention provides a method and a system for detecting a transmission fault of a power line, aiming at the defect that the power transmission line in the prior art cannot quickly find out the fault power line and accurately locate a fault point when the power transmission line is in fault, and aiming at solving the technical problem.
In a first aspect, the present invention provides a method for detecting a transmission fault of a power line, including the steps of:
s1, arranging a plurality of sampling points on each power transmission line;
s2, when the power line runs normally, setting each sampling point to acquire running parameters, and storing the running parameters as normal running samples in a database;
s3, simulating a power line fault, setting each sampling point to acquire operation parameters, and storing the operation parameters as fault samples of corresponding types in a database;
and S4, when the power transmission line has a fault, setting each sampling point to acquire real-time operation parameters, matching and comparing the real-time operation parameters with the normal operation samples and the fault samples of each type in the database, and judging the fault transmission line and the fault point.
Further, the step S2 specifically includes the following steps:
s21, when the power line runs normally, setting each sampling point to collect normal running parameters, and counting the normal running parameters of each power transmission line;
and S22, storing the normal operation parameters acquired by each sampling point and the normal operation parameters of the whole power transmission line where the sampling point is located into a database as normal operation samples.
Further, the step S3 specifically includes the following steps:
s31, acquiring the fault type of the power line;
s32, sequentially simulating various types of power line faults, setting each sampling point to acquire corresponding fault operation parameters, and counting the corresponding fault operation parameters of each power transmission line;
and S33, taking the fault operation parameters collected by each sampling point and the fault operation parameters of the corresponding fault type of the whole power transmission line where the sampling point is located as fault operation samples to be stored in a database.
Further, the step S4 specifically includes the following steps:
s41, when the power transmission line is in fault, setting sampling points of each transmission line to acquire real-time operation parameters;
s42, counting real-time operation parameters of the whole transmission line;
s43, matching and comparing the real-time operation parameters of the transmission line whole with the normal operation samples and the fault operation samples of the transmission line whole in the database, and counting the fault transmission line;
s44, acquiring real-time operation parameters acquired by sampling points of the fault transmission line;
s45, matching and comparing real-time operation parameters of each sampling point of the fault transmission line with normal operation samples and fault operation samples of each sampling point of the transmission line in a database, and counting fault sampling points;
and S46, determining a fault point of the fault transmission line according to the fault sampling point.
Further, in step S2, setting each sampling point to acquire operating parameters including voltage, current and temperature;
the voltage of the sampling point of the power transmission line is collected through the voltage transformer, the current of the sampling point of the power transmission line is collected through the current transformer, and the temperature of the sampling point of the power transmission line is collected through the temperature sensor.
Further, the fault types include a ground fault, a short-circuit fault, and a disconnection fault;
in step S3, single-phase, two-phase, and three-phase ground faults, short-circuit faults, and disconnection faults are simulated.
In a second aspect, the present invention provides a power line transmission fault detection system, including:
the sampling point setting module is used for setting a plurality of sampling points on each power transmission line;
the normal operation parameter acquisition module is used for setting each sampling point to acquire operation parameters when the power line operates normally and storing the operation parameters as normal operation samples in a database;
the fault operation parameter acquisition module is used for simulating the fault of the power line, setting each sampling point to acquire operation parameters and storing the operation parameters as fault samples of corresponding types in a database;
and the fault positioning module is used for setting each sampling point to acquire real-time operation parameters when the power transmission line has a fault, and comparing the real-time operation parameters with the normal operation samples and the fault samples of various types in the database to judge the fault transmission line and the fault point.
Further, the normal operation parameter acquisition module comprises:
the normal operation parameter acquisition unit is used for setting each sampling point to acquire normal operation parameters when the power line operates normally, and counting the normal operation parameters of each power transmission line;
and the normal operation parameter storage unit is used for storing the normal operation parameters acquired by each sampling point and the normal operation parameters of the whole power transmission line where the sampling point is located into a database as normal operation samples.
Further, the fault operation parameter acquisition module comprises:
the fault type acquisition unit is used for acquiring the fault type of the power line;
the fault operation parameter acquisition unit is used for sequentially simulating various types of power line faults, setting each sampling point to acquire corresponding fault operation parameters and counting the corresponding fault operation parameters of each power transmission line;
and the fault operation parameter storage unit is used for storing the fault operation parameters acquired by each sampling point and the fault operation parameters of the corresponding fault type of the whole power transmission line where the sampling point is positioned as fault operation samples in a database.
Further, the fault localization module includes:
the real-time operation parameter acquisition unit is used for setting sampling points of each transmission line to acquire real-time operation parameters when the power transmission line has a fault;
the transmission line real-time operation parameter statistical unit is used for counting the whole real-time operation parameters of each transmission line;
the fault transmission line determining unit is used for matching and comparing the real-time operation parameters of the whole transmission lines with the normal operation samples and the fault operation samples of the whole transmission lines in the database and counting the fault transmission lines;
the real-time parameter acquisition unit of the sampling point of the fault transmission line acquires real-time operation parameters acquired by the sampling point of the fault transmission line;
the fault sampling point determining unit is used for matching and comparing the real-time operation parameters of each sampling point of the fault transmission line with the normal operation samples and the fault operation samples of each sampling point of the transmission line in the database, and counting the fault sampling points;
and the fault point positioning unit is used for determining a fault point of the fault transmission line according to the fault sampling point.
The beneficial effect of the invention is that,
according to the power line transmission fault detection method and system provided by the invention, the sample of each power line in normal operation and the sample of each power line in a simulated fault are stored, and when the power transmission line has a fault, the stored sample data can be compared with the real-time sample data, so that the fault power transmission line and the fault point can be quickly positioned, the heavy task of searching the transmission line by operation and maintenance personnel is avoided, and the fault processing efficiency of the power transmission line is improved.
In addition, the invention has reliable design principle, simple structure and very wide application prospect.
Therefore, compared with the prior art, the invention has prominent substantive features and remarkable progress, and the beneficial effects of the implementation are also obvious.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a first schematic flow chart of the method of the present invention;
FIG. 2 is a second schematic flow chart of the method of the present invention;
FIG. 3 is a schematic diagram of the system of the present invention;
figure 1-sample point setting module; 2-a normal operation parameter acquisition module; 2.1-normal operation parameter acquisition unit; 2.2-normal operation parameter storage unit; 3-a fault operation parameter acquisition module; 3.1-a fault type acquisition unit; 3.2-a fault operation parameter acquisition unit; 3.3-a failure operation parameter saving unit; 4-fault location module; 4.1-real-time operation parameter acquisition unit; 4.2-transmission line real-time operation parameter statistical unit; 4.3-faulty transmission line determination unit; 4.4-real-time parameter acquisition unit of sampling point of the transmission line of trouble; 4.5-a failure sampling point determining unit; 4.6-fault positioning unit.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
as shown in fig. 1, the present invention provides a method for detecting a transmission fault of a power line, comprising the following steps:
s1, arranging a plurality of sampling points on each power transmission line;
s2, when the power line runs normally, setting each sampling point to acquire running parameters, and storing the running parameters as normal running samples in a database;
s3, simulating a power line fault, setting each sampling point to acquire operation parameters, and storing the operation parameters as fault samples of corresponding types in a database;
and S4, when the power transmission line has a fault, setting each sampling point to acquire real-time operation parameters, matching and comparing the real-time operation parameters with the normal operation samples and the fault samples of each type in the database, and judging the fault transmission line and the fault point.
Example 2:
as shown in fig. 2, the present invention provides a method for detecting a transmission fault of a power line, comprising the following steps:
s1, arranging a plurality of sampling points on each power transmission line;
s2, when the power line runs normally, setting each sampling point to acquire running parameters, and storing the running parameters as normal running samples in a database; the method comprises the following specific steps:
s21, when the power line runs normally, setting each sampling point to collect normal running parameters, and counting the normal running parameters of each power transmission line;
s22, storing the normal operation parameters acquired by each sampling point and the normal operation parameters of the whole power transmission line where the sampling point is located into a database as normal operation samples;
s3, simulating a power line fault, setting each sampling point to acquire operation parameters, and storing the operation parameters as fault samples of corresponding types in a database; the method comprises the following specific steps:
s31, acquiring the fault type of the power line;
s32, sequentially simulating various types of power line faults, setting each sampling point to acquire corresponding fault operation parameters, and counting the corresponding fault operation parameters of each power transmission line;
s33, taking the fault operation parameters collected by each sampling point and the fault operation parameters of the corresponding fault type of the whole power transmission line where the sampling point is located as fault operation samples to be stored in a database;
s4, when the power transmission line is in fault, setting each sampling point to acquire real-time operation parameters, matching and comparing the real-time operation parameters with normal operation samples and fault samples of various types in a database, and judging the fault transmission line and fault points; the method comprises the following specific steps:
s41, when the power transmission line is in fault, setting sampling points of each transmission line to acquire real-time operation parameters;
s42, counting real-time operation parameters of the whole transmission line;
s43, matching and comparing the real-time operation parameters of the transmission line whole with the normal operation samples and the fault operation samples of the transmission line whole in the database, and counting the fault transmission line;
s44, acquiring real-time operation parameters acquired by sampling points of the fault transmission line;
s45, matching and comparing real-time operation parameters of each sampling point of the fault transmission line with normal operation samples and fault operation samples of each sampling point of the transmission line in a database, and counting fault sampling points;
and S46, determining a fault point of the fault transmission line according to the fault sampling point.
Example 3:
as shown in fig. 3, the present invention provides a power line transmission fault detection system, including:
the sampling point setting module 1 is used for setting a plurality of sampling points on each power transmission line;
the normal operation parameter acquisition module 2 is used for setting each sampling point to acquire operation parameters when the power line operates normally, and storing the operation parameters as normal operation samples in a database; the normal operation parameter acquisition module 2 includes:
the normal operation parameter acquisition unit 2.1 is used for setting each sampling point to acquire normal operation parameters when the power line operates normally, and counting the normal operation parameters of each power transmission line;
the normal operation parameter storage unit 2.2 is used for storing the normal operation parameters acquired by each sampling point and the normal operation parameters of the whole power transmission line where the sampling point is located into a database as normal operation samples;
the fault operation parameter acquisition module 3 is used for simulating the fault of the power line, setting each sampling point to acquire operation parameters, and storing the operation parameters as fault samples of corresponding types in a database; the fault operation parameter acquisition module 3 includes:
a fault type obtaining unit 3.1, configured to obtain a power line fault type;
the fault operation parameter acquisition unit 3.2 is used for sequentially simulating various types of power line faults, setting each sampling point to acquire corresponding fault operation parameters, and counting the corresponding fault operation parameters of each power transmission line;
the fault operation parameter storage unit 3.3 is used for storing the fault operation parameters acquired by each sampling point and the fault operation parameters of the corresponding fault type of the whole power transmission line where the fault operation parameters are located as fault operation samples in a database;
the fault positioning module 4 is used for setting each sampling point to acquire real-time operation parameters when the power transmission line has a fault, matching and comparing the real-time operation parameters with normal operation samples and fault samples of various types in the database, and judging a fault transmission line and a fault point; the fault localization module 4 includes:
the real-time operation parameter acquisition unit 4.1 is used for setting sampling points of each transmission line to acquire real-time operation parameters when the power transmission line has a fault;
a transmission line real-time operation parameter statistical unit 4.2 for counting the real-time operation parameters of the whole transmission lines;
the fault transmission line determining unit 4.3 is used for matching and comparing the real-time operation parameters of the whole transmission lines with the normal operation samples and the fault operation samples of the whole transmission lines in the database, and counting the fault transmission lines;
a real-time parameter acquisition unit 4.4 for acquiring real-time operation parameters acquired by the sampling point of the fault transmission line;
the fault sampling point determining unit 4.5 is used for matching and comparing the real-time operation parameters of each sampling point of the fault transmission line with the normal operation samples and the fault operation samples of each sampling point of the transmission line in the database, and counting the fault sampling points;
and the fault point positioning unit 4.6 is used for determining a fault point of the fault transmission line according to the fault sampling point.
Although the present invention has been described in detail by referring to the drawings in connection with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions are within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A power line transmission fault detection method is characterized by comprising the following steps:
s1, arranging a plurality of sampling points on each power transmission line;
s2, when the power line runs normally, setting each sampling point to acquire running parameters, and storing the running parameters as normal running samples in a database;
s3, simulating a power line fault, setting each sampling point to acquire operation parameters, and storing the operation parameters as fault samples of corresponding types in a database;
and S4, when the power transmission line has a fault, setting each sampling point to acquire real-time operation parameters, matching and comparing the real-time operation parameters with the normal operation samples and the fault samples of each type in the database, and judging the fault transmission line and the fault point.
2. The power line transmission fault detection method according to claim 1, wherein the step S2 includes the following steps:
s21, when the power line runs normally, setting each sampling point to collect normal running parameters, and counting the normal running parameters of each power transmission line;
and S22, storing the normal operation parameters acquired by each sampling point and the normal operation parameters of the whole power transmission line where the sampling point is located into a database as normal operation samples.
3. The power line transmission fault detection method according to claim 2, wherein the step S3 includes the following steps:
s31, acquiring the fault type of the power line;
s32, sequentially simulating various types of power line faults, setting each sampling point to acquire corresponding fault operation parameters, and counting the corresponding fault operation parameters of each power transmission line;
and S33, taking the fault operation parameters collected by each sampling point and the fault operation parameters of the corresponding fault type of the whole power transmission line where the sampling point is located as fault operation samples to be stored in a database.
4. The power line transmission fault detection method according to claim 1, wherein the step S4 includes the following steps:
s41, when the power transmission line is in fault, setting sampling points of each transmission line to acquire real-time operation parameters;
s42, counting real-time operation parameters of the whole transmission line;
s43, matching and comparing the real-time operation parameters of the transmission line whole with the normal operation samples and the fault operation samples of the transmission line whole in the database, and counting the fault transmission line;
s44, acquiring real-time operation parameters acquired by sampling points of the fault transmission line;
s45, matching and comparing real-time operation parameters of each sampling point of the fault transmission line with normal operation samples and fault operation samples of each sampling point of the transmission line in a database, and counting fault sampling points;
and S46, determining a fault point of the fault transmission line according to the fault sampling point.
5. The power line transmission fault detection method of claim 1, wherein in step S2, each sampling point is set to collect operating parameters including voltage, current and temperature;
the voltage of the sampling point of the power transmission line is collected through the voltage transformer, the current of the sampling point of the power transmission line is collected through the current transformer, and the temperature of the sampling point of the power transmission line is collected through the temperature sensor.
6. The power line transmission fault detection method according to claim 1, wherein the fault types include a ground fault, a short-circuit fault, and a disconnection fault;
in step S3, single-phase, two-phase, and three-phase ground faults, short-circuit faults, and disconnection faults are simulated.
7. An electric power line transmission fault detection system, characterized by comprising:
the sampling point setting module (1) is used for setting a plurality of sampling points on each power transmission line;
the normal operation parameter acquisition module (2) is used for setting each sampling point to acquire operation parameters when the power line operates normally, and storing the operation parameters as normal operation samples in a database;
the fault operation parameter acquisition module (3) is used for simulating the fault of the power line, setting each sampling point to acquire operation parameters, and storing the operation parameters as fault samples of corresponding types in a database;
and the fault positioning module (4) is used for setting each sampling point to acquire real-time operation parameters when the power transmission line has a fault, and comparing the real-time operation parameters with the normal operation samples and the fault samples of various types in the database to judge the fault transmission line and the fault point.
8. The power line transmission fault detection system of claim 7, wherein the normal operation parameter acquisition module (2) comprises:
the normal operation parameter acquisition unit (2.1) is used for setting each sampling point to acquire normal operation parameters when the power line operates normally, and counting the normal operation parameters of each power transmission line;
and the normal operation parameter storage unit (2.2) is used for storing the normal operation parameters acquired by each sampling point and the normal operation parameters of the whole power transmission line where the sampling point is located into a database as normal operation samples.
9. The power line transmission fault detection system of claim 7, wherein the fault operation parameter acquisition module (3) comprises:
a fault type acquisition unit (3.1) for acquiring a power line fault type;
the fault operation parameter acquisition unit (3.2) is used for sequentially simulating various types of power line faults, setting each sampling point to acquire corresponding fault operation parameters and counting the corresponding fault operation parameters of each power transmission line;
and the fault operation parameter storage unit (3.3) is used for storing the fault operation parameters acquired by each sampling point and the fault operation parameters of the corresponding fault type of the whole power transmission line where the sampling point is positioned as fault operation samples in a database.
10. An electric power line transmission fault detection system as claimed in claim 7, characterized in that the fault localization module (4) comprises:
the real-time operation parameter acquisition unit (4.1) is used for setting sampling points of each transmission line to acquire real-time operation parameters when the power transmission line has a fault;
a transmission line real-time operation parameter statistical unit (4.2) for counting the real-time operation parameters of the whole transmission lines;
the fault transmission line determining unit (4.3) is used for matching and comparing the real-time operation parameters of the whole transmission lines with the normal operation samples and the fault operation samples of the whole transmission lines in the database and counting the fault transmission lines;
the real-time parameter acquisition unit (4.4) of the sampling point of the fault transmission line acquires real-time operation parameters acquired by the sampling point of the fault transmission line;
the fault sampling point determining unit (4.5) is used for matching and comparing the real-time operation parameters of each sampling point of the fault transmission line with the normal operation samples and the fault operation samples of each sampling point of the transmission line in the database, and counting the fault sampling points;
and the fault point positioning unit (4.6) is used for determining a fault point of the fault transmission line according to the fault sampling point.
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| CN116381419B (en) * | 2023-06-05 | 2023-11-07 | 中国南方电网有限责任公司超高压输电公司广州局 | Transmission line fault processing method, device, computer equipment and storage medium |
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