CN107202938B - Transmission line fault positioning and display system - Google Patents
Transmission line fault positioning and display system Download PDFInfo
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- CN107202938B CN107202938B CN201710477928.2A CN201710477928A CN107202938B CN 107202938 B CN107202938 B CN 107202938B CN 201710477928 A CN201710477928 A CN 201710477928A CN 107202938 B CN107202938 B CN 107202938B
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- 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
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- 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
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Abstract
The invention discloses power transmission line fault positioning modules, which belong to the technical field of power transmission lines and comprise a data maintenance module, a fault positioning module and an operation abstraction module, wherein the operation abstraction module maps power transmission line data imported by the data maintenance module into an electronic map to form the electronic map at least comprising high-speed rails, high-speed and important power transmission channels, the fault positioning module calculates the line length of a power transmission line fault point from a certain transformer substation through power transmission line recording data, and the operation abstraction module displays the fault point position and the environment around the fault point on the electronic map containing the power transmission line data according to the calculation result of the fault positioning module so as to help a dispatcher to quickly master the environment around the power transmission line fault point and send a dispatching instruction in time.
Description
Technical Field
The invention belongs to the technical field of power transmission lines, and particularly relates to systems capable of displaying fault positions of power transmission lines.
Background
When the power transmission line crosses over the high-speed railway, the high-speed road and other important power transmission lines, which are called as a three-span line in in the industry, the three-span line has a fault, if the fault point is in a cross-over area, the fault line can not normally operate, and the fault line can cause the shutdown of the high-speed railway, the high-speed road or other important power transmission lines and even cause important public safety accidents.
In actual work, the following defects of a regulator in the aspect of three-span line fault disposal exist, and the high-quality and high-efficiency development of emergency disposal work is seriously restricted.
, after a line fault point is difficult to accurately and quickly locate, a controller can only synthesize fault location and cross rod section distribution in a three-span line detailed ledger, roughly estimate whether the fault location is in a three-span section, and has low accuracy and long consumed time.
The -time wiring diagrams and geographical wiring diagrams used by regulators at present can only simply display the connection relation of each end of a line, and do not display the number, geographical position and path direction of towers of the line, so that the regulators directly cannot master the actual spatial layout of the line, cannot accurately define the line path area, and cannot quickly and accurately inform personnel at the location of a power transmission line with a fault to start an emergency plan and check the line with electricity.
Thirdly, the working condition of the line environment is difficult to be known accurately in real time. In the process of line operation, the system is influenced by a plurality of objective factors such as weather, road conditions, trees, buildings and the like, and the existing regulation and control technology support system cannot acquire the line operation working condition in real time, so that the effective information which can be used as the basis for judging whether a remote trial delivery condition exists after a line fault is not enough for a regulator.
And fourthly, the dynamic emergency response of the operation and maintenance department is difficult to master in real time, after an accident occurs, a regulation and control person cannot intuitively master the dynamic situation that related operation and maintenance managers reach a transformer substation and a fault point, the emergency response situation of each part cannot be mastered in real time, and related supervision, command and assessment work cannot be carried out.
Disclosure of Invention
The technical problem to be solved by the invention is to provide power transmission line fault positioning and display systems to help a dispatcher quickly master the surrounding environment of a power transmission line fault point and send out a dispatching instruction in time.
kinds of transmission line fault location and display system, including data maintenance module, fault location module and operation abstract module storing electronic map in transmission line passing area,
a user introduces power transmission line data into the operation abstraction module through the data maintenance module, and the operation abstraction module maps the power transmission line data into an electronic map to form the electronic map at least comprising high-speed rails, high-speed and important power transmission channels; the fault positioning module is used for acquiring wave recording data of the power transmission line, when the power transmission line has a fault, the fault positioning module calculates the line length from a fault point of the power transmission line to a certain transformer substation according to the acquired wave recording data, and the operation abstraction module displays the position of the fault point and the environment around the fault point on an electronic map containing the power transmission line data according to the calculation result of the fault positioning module;
the power transmission line data at least comprises power transmission line device data of the longitude and latitude positions of all transformer substations and the longitude and latitude positions of all towers.
The technical scheme of the invention is further improved in step that the data of the power transmission line device further comprises icons of all substations, names of all substations, colors of the icons of all substations, icons and colors of all towers, numbers of all towers, colors of all power transmission lines, switch numbers, protection models and configurations of all substations, rated current, types of the power transmission lines and commissioning time.
The improvement of the technical scheme of the invention is , wherein the power transmission line data further comprises power transmission line management data, and the power transmission line management data at least comprises longitude and latitude position coordinate data of each operation maintenance unit of a power supply company.
The improvement of the technical scheme of the invention is that the power transmission line management data further comprises operation and maintenance unit data of each power supply company, wherein the operation and maintenance unit data of each power supply company comprises an operation and maintenance unit name or an icon pattern, a responsibility range and a membership relation between the operation and maintenance unit and each transformer substation and each power transmission line, and the operation and maintenance unit name comprises a power transformation operation and maintenance room, a power transmission operation and inspection room, a power transformation operation and maintenance class and an administrative region company.
The technical proposal of the invention is further improved by that the operation abstract module is also provided with a scene display module which can display or hide the data of the transmission line device or the management data of the transmission line.
The technical scheme of the invention is further improved in that the data maintenance module is provided with a user name and a password, and the user logs in to verify the identity through the user name and the password.
The improvement of the technical scheme of the invention is , wherein the recording data acquired by the fault positioning module can be used for calculating the line length from the fault point of the transmission line to the substation from substations at end of the transmission line, or respectively calculating the line lengths from the fault point of the transmission line to the substation from the substations at two ends of the transmission line.
The improvement of the technical scheme of the invention is , wherein when the fault point distance is calculated from substations, the fault point position is calculated by preferentially selecting the wave recording data provided by the power side substation.
The improvement of the technical scheme of the invention is , that is, when the branch transmission lines of other substations are connected on the transmission line between two substations, the fault point position displayed in the electronic map of the operation abstraction module includes the fault point position on the branch transmission line.
The improvement of the above technical solution of the present invention is , wherein when the location of the fault point is calculated from the substations at both ends of the transmission line, the operation abstraction module displays the fault point according to the following formula,
a is Ac + K (Ac + Bc-L), B is Bc + K (Ac + Bc-L), wherein,
a: obtaining the line fault point position calculated by the recording data from the transformer substation A;
b: obtaining the line fault point position calculated by the recording data from the transformer substation B;
ac: the method comprises the steps that a recording data value of a fault point obtained from a transformer substation A and the distance from the transformer substation A is measured in kilometers;
bc: the unit is kilometer of a recording data value which is acquired from a transformer substation B and is between a fault point and the transformer substation B;
l: the total length of the transmission line between the transformer substation A and the transformer substation B is kilometer;
k: the deviation correction coefficient is 0.5.
When the wave recording data of the power transmission line is acquired from substations, the operation abstraction module displays fault points which are from the side of the substation and accord with the distance between the line fault point and the line length of the substation, the fault points are only points when the power transmission line has no branch output line, if the power transmission line is a T-shaped line with a branch power transmission line, and the distance between the fault point and the line length of the substation exceeds the contact point of the branch power transmission line, the operation abstraction module displays the fault point positions on each branch power transmission line respectively, and when a plurality of branch power transmission lines exist, a plurality of points are displayed.
When the wave recording data of the power transmission line are acquired from two substations, fault points displayed by the abstract module are operated, if the power transmission line has no branch output line, two points are displayed in an electronic map of the abstract module, the two points are possibly overlapped and have distance, if the two points are not overlapped and have fixed distance, the fault points are displayed on lines between the two points, if the power transmission line is the branch power transmission line, and the length of the fault points from the substation line exceeds the connection point of the branch power transmission line, the fault points in the electronic map of the abstract module are displayed on each power transmission line and present a plurality of points, and the fault points are respectively from the substation acquiring the wave recording data and are in accordance with the length of the line fault points from the substation line.
The technical progress achieved by the invention due to the adoption of the technical scheme is as follows:
the power transmission line fault positioning and displaying system can help a dispatcher to quickly master the conditions of roads, railways and other power transmission lines around a fault point when the power transmission line fault is found so as to send out a dispatching instruction in time.
The invention combines the power transmission line device data of the longitude and latitude positions of each transformer substation, the longitude and latitude positions and the trend of each tower in the power transmission line with the daily used electronic map (such as a hundred-degree map) to display the accurate positions of the power transmission line device data and the daily used electronic map, so that when a fault occurs, the geographical position of the map can be accurately used as an index to judge the conditions of roads, railways and other power transmission lines around the fault point of the power transmission line, even villages, trees, forests, rivers and ponds, thereby facilitating emergency treatment and shortening the time and the accuracy for sending the scheduling instruction. And the detailed information such as the icon, the name, the icon color, the icon and color and the number of each transformer substation, the color of the power transmission line between each transformer substation and each tower, the color of each power transmission line, even the switch number, the protection model and configuration, the rated current, the power transmission line model and the commissioning time of each transformer substation can be displayed on the map, and the materials and the cautions required during maintenance can be conveniently informed when a scheduling instruction is issued. Meanwhile, the instruction can directly reach the operation maintenance unit closest to the fault point or the operation maintenance unit which can be reached at the fastest speed, and the unit related to the fault point is informed.
The scene display module arranged in the invention can display or hide the data of the transmission line device or the management data of the transmission line, and can close irrelevant or unimportant transmission lines and towers thereof, the data maintenance module is provided with a user name and a password, only an internal user knowing the user name and the password can log in to verify the identity, and the safety of the transmission line fault positioning and display system is enhanced.
The invention can intuitively and comprehensively master the route direction of the line, overcomes the defects of times of past wiring diagrams and geographical wiring diagrams (the diagrams can only simply display the connection relation of each end of the line in an almost straight line mode and can not display the number, the geographical position and the route direction of towers of the line), can be used for directly seeing the actual spatial layout of the line by a controller, accurately defining the route area of the line and quickly and accurately informing the personnel belonging to the power transmission line with the fault to start an emergency plan and carry out live line inspection.
The method can accurately learn the working condition of the line environment in real time, can accurately see a plurality of conditions such as road conditions, trees, buildings and the like around a fault point, can acquire the operation working condition of the power transmission line in real time, can also implement and acquire the road traffic device, can judge whether the line has a remote trial delivery condition after the fault, can master the emergency response dynamic state of the operation and maintenance part in real time, and after the fault occurs, a regulation and control person can intuitively master the dynamic state of related operation and maintenance management personnel going to a transformer substation and the fault point.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic diagram of the position of a fault point of the wave-recording data of the substation from two ends of the line of the power transmission line without branches;
fig. 3 is another schematic diagram of the fault point position of the substation recorded wave data from both ends of the power transmission line without branches;
fig. 4 is a schematic diagram of the location of a fault point of a branched transmission line (T-line) (wave data measured from a substation a);
fig. 5 is another schematic diagram of the fault point location of a branched transmission line (T-line) (wave data measured from substation a).
Detailed Description
The invention relates to a power transmission line fault positioning and display system, which comprises a data maintenance module, a fault positioning module and an operation abstraction module, wherein the operation abstraction module stores an electronic map in a power transmission line passing area, the electronic map can use a free map such as a hundred-degree map and the like which can be updated in time, other electronic maps can be used, but the electronic map at least comprises important traffic lines such as high-speed rails, high-speed rails and the like, a user introduces power transmission line data into the operation abstraction module through the data maintenance module, the operation abstraction module forms a mapping relation between the power transmission line data and the electronic map, namely, the power transmission line data is mapped into the electronic map, so that the operation abstraction module forms an electronic map at least comprising high-speed rails, high-speed rails and important power transmission channels, common substations (at least power supply side substations) are internally provided with instruments capable of finding the distance between the fault points of the power transmission line and the substation, the fault positioning module is used for obtaining recorded wave data of the power transmission line generated by the instruments, when the power transmission line has a fault, the fault positioning module calculates the line length from the fault point of the power transmission line from a certain substation from the substation, namely, the substation along the distance of the power transmission line, the substation comprises a plurality of recorded wave data 351 and the electronic map for displaying the power transmission line on the power transmission line, the power transmission line comprises the electronic map, the electronic map comprises the electronic map.
The transmission line device data of the invention can comprise the longitude and latitude positions of the transformer substations and the longitude and latitude positions of all the towers, as well as icons and colors of all the transformer substations, names of all the transformer substations, icons and colors of all the towers, numbers of all the towers, colors of all the transmission lines, or switch numbers, protection models and configurations, rated currents, types of the transmission lines, commissioning time and the like of all the transformer substations. The power transmission line data also comprises power transmission line management data, wherein the power transmission line management data at least comprises longitude and latitude position coordinate data of each operation maintenance unit of a power supply company; the system also comprises operation and maintenance unit data of each power supply company, wherein the operation and maintenance unit data of each power supply company comprises an operation and maintenance unit name or an icon pattern, a responsibility range and a membership relation between the operation and maintenance unit and each transformer substation and each power transmission line, and the operation and maintenance unit name comprises a power transformation operation and maintenance room, a power transmission operation and maintenance room, a power transformation operation and maintenance class and an administrative region company. The transmission line data (including transmission line device data or transmission line management data) can be imported into the operation abstraction module through the data maintenance module, and can be displayed when needed and hidden when not needed.
The data maintenance module can set a user name and a password, and the user logs in to verify the identity through the user name and the password when logging in.
The method comprises the steps that recording data obtained by a fault positioning module can be obtained from substations at ends of a power transmission line, the line length of the power transmission line from a fault point of the power transmission line to the substation is calculated from the substations, when the recording data of the power transmission line are obtained from substations, the operation abstraction module displays a fault point which is from the side of the substation and corresponds to the distance between the fault point of the power transmission line and the line length of the substation, when the distance between the fault point obtained by the recording data and the substation is calculated from substations, the recording data provided by a power supply side substation are preferentially selected to calculate the position of the fault point, if the power transmission line is a branched power transmission line (taking branched lines, namely T-shaped lines as an example), the operation abstraction module displays the position of the fault point on each branched power transmission line (shown in figure 5), and displays a plurality of points when the distance between the fault point and the substation (namely the line length) exceeds the contact of the branched power transmission line, is displayed on the power transmission line (shown in figure 4).
The invention can also calculate the line length of the fault point of the transmission line from the transformer substation at the two ends of the transmission line respectively.
When the wave recording data of the transmission line are obtained from two substations, the operation abstraction module respectively displays the fault point on the transmission line, if the transmission line has no branch output line, the electronic map of the operation abstraction module displays two points which may be overlapped or have distance, if the two points are not overlapped but have fixed distance, the fault point is indicated on line between the two points (as shown in fig. 2 and fig. 3), if the transmission line is a branch transmission line, namely the transmission line between the two substations is connected with the branch transmission line of other substations,
and when the distance between the fault point and the transformer substation line exceeds the contact point of the branch transmission line, the fault point in the electronic map of the operation abstraction module is displayed on each transmission line to present a plurality of points, wherein the fault points are points which respectively start from the transformer substation for acquiring the wave recording data and accord with the distance between the line fault point and the transformer substation line.
When the positions of the fault points are respectively calculated from the substations at the two ends of the transmission line, the operation abstraction module displays the fault points according to the following formula,
a is Ac + K (Ac + Bc-L), B is Bc + K (Ac + Bc-L), wherein,
a: obtaining the line fault point position calculated by the recording data from the transformer substation A;
b: obtaining the line fault point position calculated by the recording data from the transformer substation B;
ac: the method comprises the steps that a recording data value of a fault point obtained from a transformer substation A and the distance from the transformer substation A is measured in kilometers;
bc: the unit is kilometer of a recording data value which is acquired from a transformer substation B and is between a fault point and the transformer substation B;
l: the total length of the transmission line between the transformer substation A and the transformer substation B is kilometer;
k: the deviation correction coefficient is 0.5.
The specific mode of the fault location module in fault location may include the following modes:
in the mode , the transmission line is a two-end line, if only the side substation can provide wave recording data, the fault positioning module only judges fault point positions according to the wave recording distance measurement and dynamically displays the fault point positions.
The second mode is that as shown in fig. 4 and 5, the transmission line is a T-shaped line, at this time, the fault location module determines the fault location according to the recording data provided by the power source side substation, only fault points are displayed on the electronic map if the fault point does not exceed the wiring point, and fault points are respectively displayed on each branch behind the wiring point on the screen if the fault point exceeds the wiring point.
The third mode is that as shown in fig. 2 and 3, the substations at the two ends of the power transmission line can provide wave recording distance measurement, and fault wave recording data at the two ends possibly have deviation, aiming at the condition, the fault positioning module can respectively calculate fault points A and B according to the formula to obtain a line section between A and B, namely a platform judgment line fault section, wherein if Ac + Bc is L, the A and B are superposed, the A point and the B point are the same points, namely the fault point is the accurate A (B) point, which is the most ideal states, if Ac + Bc is more than L, the A point is displayed on the side close to the substation B station , the B point is displayed on the side close to the substation A station , the fault point is section between the A point and the B point, and the Ac-Bc section is included between the A-B sections;
if Ac + Bc is less than L, the point A is positioned on the side of the transformer substation A, the point B is positioned on the side of the transformer substation B, the fault point is determined as a line section between the point A and the point B, and the Ac-Bc section is still included between the A-B sections.
The data maintenance module can automatically generate a three-span line geographical wiring diagram in the scene display module after a background management system administrator account logs in a background management system and sequentially records the longitude and latitude of each transformer substation and each line tower, thereby realizing the geographical position display of cross-domain areas and path trends of the power transmission line, the automatic accurate positioning of line fault points and the three-dimensional display function of line operation environment working conditions. The system can be accessed through the computer client and the smart phone.
And after the longitude and latitude geographic coordinate data of each transformer substation and each line tower contained in a certain three-span line are imported into the background management system by the background management system, the line graph can be generated in the scene display module according to the actual geographic position. In the line graph, each transformer substation is represented by a block diagram icon, each tower of the line is represented by a dot icon, and the icon color of each transformer substation, the icon color of each tower and the line color can be automatically edited and set by a background management system manually. The name of the transformer substation and the number of the tower can be set manually. The information of the line switch number, the protection model and configuration, the rated current, the line model, the commissioning time and the like of each side transformer substation can be remarked.
After the longitude and latitude geographic coordinate data of each operation maintenance unit of the power supply company is imported into the system in the background management system, the operation maintenance unit can be displayed on a map in a graphical mode according to the actual geographic position, wherein the operation maintenance unit comprises a power transformation operation and maintenance room, a power transmission operation and inspection room, a power transformation operation and maintenance class, a county company and the like. The name of the operation and maintenance management unit, the icon style and the like can be automatically edited and set by people.
In the background management system, the responsibility ranges and the membership relations between the operation and maintenance managers and the substations and the lines can be set manually.
The method comprises the steps that a scene display module displays an administrative area graph on a full screen independently when a normal interface is used, a map picture can be zoomed freely according to a proportion, electric transmission lines of high-speed, high-speed and important transmission channels in administrative areas can be clearly displayed in each proportion graph, spatial layout and path trend of the line graph and an actual transmission line are completely , geographical position situations of all lines and all towers are clear, the situations that the lines cross railways and cross high-speed can be comprehensively mastered, line names and transformer substation names can be displayed clearly when the picture is in a normal size interface, pole tower numbers can be displayed after the picture is enlarged, remark contents can be added to each icon, the remark contents are not displayed on the graph when the remark contents are in a normal condition, a mouse is placed at the icon, the remark contents can be displayed automatically (the mouse is moved to the pole tower, information such as the number, the geographical position, the altitude, the distance from each station, the operation date and the like can be displayed when the mouse is moved to the transformer substation, information such as line switch number, protection model, rated current, line model, operation time and the like can be displayed manually, when the picture is not displayed on the transmission line, the picture 36 or the picture is displayed manually, and the picture is displayed when the picture is displayed manually is displayed on the picture is displayed on a transformer substation, or the picture is hidden, or displayed manually, and the picture is displayed when the picture is.
When a line has a fault, the fault positioning module can automatically acquire fault recording distance measurement, and automatically calculate the length of the line between two poles through the longitude and latitude of the poles, so that the fault positioning module can automatically determine the specific fault range of the line, and dynamically and distinctively display the fault range on the scene display module (the fault point can be displayed between two poles, at which geographic position and whether the fault point is located at a crossing point by using a graph, and the fault section can be displayed by using a color different from the color of the line), thereby eliminating the blindness of scheduling command, and quickly and accurately informing relevant operation and maintenance units of starting emergency response.
The system can automatically record the response starting time of each operation and maintenance management part (taking vehicle starting as standard), automatically count the response in-place time after manual connection with the platform, and provide check data for monitoring and monitoring work after emergency.
Claims (1)
1, kinds of transmission line fault location and display system, which is characterized in that it comprises data maintenance module, fault location module and operation abstract module storing electronic map in transmission line transit area,
a user introduces power transmission line data into the operation abstraction module through the data maintenance module, and the operation abstraction module maps the power transmission line data into an electronic map to form the electronic map at least comprising high-speed rails, high-speed and important power transmission channels; the fault positioning module is used for acquiring wave recording data of the power transmission line, when the power transmission line has a fault, the fault positioning module calculates the line length from a fault point of the power transmission line to a certain transformer substation according to the acquired wave recording data, and the operation abstraction module displays the position of the fault point and the environment around the fault point on an electronic map containing the power transmission line data according to the calculation result of the fault positioning module;
the power transmission line data at least comprises power transmission line device data of the longitude and latitude positions of all transformer substations and the longitude and latitude positions of all towers;
the power transmission line device data further comprises icons of all transformer substations, names of all transformer substations, colors of the icons of all the transformer substations, icons and colors of all the towers, numbers of all the towers, colors of all the power transmission lines, switch numbers, protection models and configurations of all the transformer substations, rated currents, models of the power transmission lines and commissioning time;
the power transmission line data also comprises power transmission line management data, wherein the power transmission line management data at least comprises longitude and latitude position coordinate data of each operation maintenance unit of a power supply company;
the operation abstraction module is also provided with a scene display module which can display or hide the data of the power transmission line device or the management data of the power transmission line;
when the recording data is acquired by the fault positioning module, the line length from the fault point of the transmission line to the substation can be calculated from substations at the end of the transmission line, and the line lengths from the fault points of the transmission line to the substation can also be calculated from the substations at the two ends of the transmission line respectively;
when the positions of the fault points are respectively calculated from the substations at the two ends of the transmission line, the operation abstraction module displays the fault points according to the following formula,
a = Ac + K (Ac + Bc-L), B = Bc + K (Ac + Bc-L), wherein,
a: obtaining the line fault point position calculated by the recording data from the transformer substation A;
b: obtaining the line fault point position calculated by the recording data from the transformer substation B;
ac: the method comprises the steps that a recording data value of a fault point obtained from a transformer substation A and the distance from the transformer substation A is measured in kilometers;
bc: the unit is kilometer of a recording data value which is acquired from a transformer substation B and is between a fault point and the transformer substation B;
l: the total length of the transmission line between the transformer substation A and the transformer substation B is kilometer;
k: the deviation correction coefficient is 0.5;
the power transmission line management data further comprises operation maintenance unit data of each power supply company, wherein the operation maintenance unit data of each power supply company comprises an operation maintenance unit name or an icon pattern, a responsibility range and a membership relation between the operation maintenance unit and each transformer substation and each power transmission line, and the operation maintenance unit name comprises a power transformation operation and maintenance room, a power transmission operation and maintenance room, a power transformation operation and maintenance class and an administrative region company;
the data maintenance module is provided with a user name and a password, and a user logs in to verify the identity through the user name and the password;
when the fault point distance is calculated from substations, the fault point position is calculated by preferentially selecting the recording data provided by the power supply side substation;
when the power transmission line between the two substations is connected with the branch power transmission line of other substations, the fault point position displayed in the electronic map of the operation abstraction module comprises the fault point position on the branch power transmission line.
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| CN201710477928.2A CN107202938B (en) | 2017-06-22 | 2017-06-22 | Transmission line fault positioning and display system |
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| CN108735028B (en) * | 2018-06-04 | 2020-08-11 | 浙江大学 | Complete diagnosis system and method for wiring fault of electric circuit |
| CN111736036B (en) * | 2020-07-01 | 2022-09-09 | 广东电网有限责任公司 | Fault location system and method for power transmission line |
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