CN113376479B - Power distribution network fault detection system - Google Patents
Power distribution network fault detection system Download PDFInfo
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- CN113376479B CN113376479B CN202110711926.1A CN202110711926A CN113376479B CN 113376479 B CN113376479 B CN 113376479B CN 202110711926 A CN202110711926 A CN 202110711926A CN 113376479 B CN113376479 B CN 113376479B
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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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- 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
A power distribution network fault detection system comprises a fault indicator, a main station and a mobile terminal; the fault indicators are equidistantly arranged along a power grid line, and a fault detection module, an alarm module and a first communication module are arranged in each fault indicator; the master station comprises a second communication module, a detection area division module, a fault indicator numbering module, a fault type judgment module, a display module and a fault recording module; when a new fault is generated every time, the fault recording module searches and compares fault records in a preset time period A before the new fault is generated, whether faults still occur in the same area or not is searched, and if faults still occur in the time period A before the new fault occurs in the same area, a piece of warning information is displayed on the display module. According to the invention, the fault area of the power grid can be quickly positioned, the positioning time of the fault detection point can be gradually reduced, and the efficiency of fault detection can be continuously improved.
Description
Technical Field
The invention relates to the technical field of power distribution networks, in particular to a power distribution network fault detection system.
Background
The existence puts main energy and input in the operation and management aspect among the present power supply enterprise, and attaches attention to not enough problem to the maintenance and the detection of power supply system distribution lines, if this mistake of arbitrary continued development, causes the accumulation of power supply system distribution lines problem very easily, leads to the frequent emergence of power supply system distribution lines trouble, brings the influence for whole power supply system's safety and function.
The invention provides a power distribution network fault detection system with a Chinese patent publication No. CN106443362A, which can locate the fault reason and the fault area, reduce the time of maintenance power failure, improve the equipment utilization rate and the operation reliability, and reduce the maintenance cost, but does not pay more attention to the area with high fault rate, and after each fault occurs, the fault point needs to be searched between the fault areas, which wastes time, especially the area with high fault rate, and the fault point needs to be searched between two adjacent fault location modules, and the fault point needs to be accurately determined each time, thus being not beneficial to gradually shortening the location time of the fault detection point.
Disclosure of Invention
Objects of the invention
In order to solve the technical problems in the background art, the invention provides a power distribution network fault detection system.
(II) technical scheme
On one hand, the invention provides a power distribution network fault detection system, which comprises a fault indicator, a main station and a mobile terminal;
the fault indicators are equidistantly arranged along a power grid line, a fault detection module, an alarm module and a first communication module are arranged in the fault indicators, the fault detection module is used for detecting circuit faults, and the alarm module starts to work after the fault detection module detects the circuit faults;
the master station comprises a second communication module, a detection area division module, a fault indicator numbering module, a fault type judgment module, a display module and a fault recording module; the second communication module is in wireless communication connection with the first communication module and the mobile terminal, and the second communication module sends the content displayed by the display module to the mobile terminal; the detection region division module is used for dividing according to the installation position of the fault indicator and numbering each region; the fault indicator numbering module is used for numbering fault indicators on the power grid line; the fault type judging module is used for judging the fault type generated by the power grid line according to the information transmitted by the fault indicator; the display module is used for displaying faults generated by the power grid line and corresponding detection area numbers; the fault recording module is used for recording a previous fault area and fault time, when a new fault occurs, the fault recording module searches and compares fault records in a preset time period A before, searches whether a fault still occurs in the same area, if a fault still occurs in the previous time period A in the same area, a piece of warning information is displayed on the display module and is sent to the mobile terminal along with the fault information, the warning information is used for reminding maintenance personnel to carry a group of new fault indicators to be installed at the middle position of the area, and if the fault area reaches a preset minimum area, namely the distance between two adjacent groups of fault indicators reaches a preset minimum distance, the warning information is not generated; the mobile terminal is used for receiving the information sent by the main station.
Preferably, the types of circuit faults detected by the fault detection module include high resistance faults, short circuit faults, ground faults and power supply intermittent faults.
Preferably, the alarm mode of the alarm module comprises a red turning board display and a luminous display, the red turning board display is used for displaying when fault alarm is generated in the daytime, the red turning board and the luminous display are combined when fault alarm is generated at night, and the display board adopts a night vision reflective technology.
Preferably, the display module further displays a graphical display of the location of the fault occurrence.
Preferably, the fault indicator numbering module carries out numbering according to the installation sequence of the fault indicators, the numbering is a digital number, and the first digit of each fault indicator number is the number of the power grid line.
Preferably, the warning information displayed on the display module after the fault recording module compares the fault records in the time period a is "the area repeatedly has faults in the time period a, please carry a new set of fault indicators to be installed at the middle position of the area".
Preferably, the mobile terminal is a mobile phone or a notebook computer.
On the other hand, the invention provides a detection method of the power distribution network fault detection system, which comprises the following steps: s1, arranging a plurality of groups of fault indicators at equal intervals along a power grid line, establishing wireless connection between the fault indicators and a main station, and transmitting circuit change information to the main station by the fault indicators in real time; s2, the main station numbers the fault indicators in sequence according to the installation time, and the main station numbers the area between every two adjacent fault indicators as a detection area; s3, when a fault occurs in a certain area, the alarm modules of the fault indicators before the fault point start to work, and the alarm modules of the fault indicators after the fault point do not work; s4, after receiving the abnormal signal of the fault indicator, the main station judges the type of the fault and positions the fault to the area generating the fault, the positioning method of the fault area is that the fault type and the fault area are displayed by the display module of the main station and the displayed information is sent to the mobile terminal, and the last red card point is positioned between the first non-red card point and the second non-red card point; s5, the fault recording module searches and compares fault records in a preset time period A before the fault records are compared, and searches whether faults still occur in the same area, if faults still occur in the time period A before the fault records occur in the same area, a piece of warning information is displayed on the display module and is sent to the mobile terminal along with the fault information; and S6, the mobile terminal receives the information and then timely goes to a fault area for detection and maintenance, if the received information contains warning information, maintenance personnel carry a group of new fault indicators to the fault area, install the new fault indicators at the middle position of the fault area, and then establish wireless connection with the main station. And S7, numbering the newly installed fault indicators by the master station, and dividing the detection area again.
The technical scheme of the invention has the following beneficial technical effects: the fault area of the power grid can be rapidly positioned, for the same area, if faults occur twice or more in a set time period, a group of new fault indicators are additionally arranged at the middle position of the fault area when maintenance personnel go to maintain each time, the fault finding area in a high fault rate is reduced by half by utilizing the bisection method, the positioning time of fault detection points can be gradually reduced, and the fault detection efficiency is convenient to continuously improve.
Drawings
Fig. 1 is a schematic structural diagram of a power distribution network fault detection system according to the present invention.
Fig. 2 is a flowchart of a detection method of the power distribution network fault detection system according to the present invention.
Fig. 3 and fig. 4 show two display contents of the display module in the power distribution network fault detection system according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
As shown in fig. 1-4, in one aspect, the present invention provides a power distribution network fault detection system, which includes a fault indicator, a master station, and a mobile terminal;
the fault indicators are equidistantly arranged along a power grid line, a fault detection module, an alarm module and a first communication module are arranged in the fault indicators, the fault detection module is used for detecting circuit faults, and the alarm module starts to work after the fault detection module detects the circuit faults;
the master station comprises a second communication module, a detection area division module, a fault indicator numbering module, a fault type judgment module, a display module and a fault recording module; the second communication module is in wireless communication connection with the first communication module and the mobile terminal, and the second communication module sends the content displayed by the display module to the mobile terminal; the detection region division module is used for dividing according to the installation position of the fault indicator and numbering each region; the fault indicator numbering module is used for numbering fault indicators on the power grid line; the fault type judging module is used for judging the fault type generated by the power grid line according to the information transmitted by the fault indicator; the display module is used for displaying faults generated by the power grid line and corresponding detection area numbers; the fault recording module is used for recording a previous fault area and fault time, when a new fault occurs, the fault recording module searches and compares fault records in a preset time period A before, searches whether a fault still occurs in the same area, if a fault still occurs in the previous time period A in the same area, a piece of warning information is displayed on the display module and is sent to the mobile terminal along with the fault information, the warning information is used for reminding maintenance personnel to carry a group of new fault indicators to be installed at the middle position of the area, and if the fault area reaches a preset minimum area, namely the distance between two adjacent groups of fault indicators reaches a preset minimum distance, the warning information is not generated; the mobile terminal is used for receiving the information sent by the main station.
In the invention, a plurality of groups of fault indicators are equidistantly arranged along a power grid line, the fault indicators are wirelessly connected with a main station, the fault indicators transmit circuit change information to the main station in real time, the main station numbers the fault indicators according to installation time, the main station numbers an area between every two adjacent fault indicators to be used as a detection area, when a fault occurs in a certain area, an alarm module of the fault indicator before the fault point starts working, an alarm module of the fault indicator after the fault point does not work, the main station judges the type of the fault and positions the fault to the area generating the fault after receiving an abnormal signal of the fault indicator, the positioning method of the fault area is that the fault type and the fault area are displayed by a display module of the main station and the displayed information is transmitted to a mobile terminal, the fault recording module searches and compares fault records in a set time period A before searching and comparing, whether faults still occur in the same area or not is searched, if faults still occur in the time period A before the same area, a piece of warning information is displayed on the display module and is sent to the mobile terminal along with the fault information, the mobile terminal receives the information and then timely goes to the fault area to detect and maintain, and if the received information contains the warning information, maintenance personnel carry a group of new fault indicators to go to the fault area and install the new fault indicators at the middle position of the fault area. According to the invention, the fault area of the power grid can be rapidly positioned, and for the same area, if two or more faults occur within a set time period, a group of new fault indicators are additionally arranged at the middle position of the fault area when maintenance personnel go to maintain each time, the fault finding area within a high fault rate is halved by utilizing the bisection method, the positioning time of fault detection points can be gradually reduced, and the efficiency of fault detection can be continuously improved.
In an alternative embodiment, the types of circuit faults detected by the fault detection module include high resistance faults, short circuit faults, ground faults and power supply intermittent faults; the fault detection content is comprehensive.
In an optional embodiment, the alarm mode of the alarm module comprises a red turning board display and a luminous display, the red turning board display is used for displaying when a fault alarm is generated in the daytime, the red turning board and the luminous display are combined when the fault alarm is generated at night, and the display board adopts a night vision reflective technology; can the on-the-spot instruction, the maintenance personal of being convenient for is on-the-spot to look over.
In an alternative embodiment, the display module further displays a graphical display of the location of the fault occurrence; and maintenance personnel can conveniently and visually judge the fault area.
In an optional embodiment, the fault indicator numbering module carries out numbering according to the installation sequence of the fault indicators, the numbering is a digital number, and the first bit of the numbering of each fault indicator is the numbering of the power grid line; for example, a fault indicator is numbered (1), where (1) is the grid line number and 1 represents the fault indicator installed first on the line.
In an optional embodiment, the warning information displayed on the display module after the fault recording module compares the fault records in the time period a is that "the area repeatedly has faults in the time period a, please the maintenance personnel to carry a group of new fault indicators to be installed at the middle position of the area"; the warning information is clear.
In an optional embodiment, the mobile terminal is a mobile phone or a notebook computer; the portability is improved.
On the other hand, the detection method of the power distribution network fault detection system provided by the invention comprises the following steps:
s1, arranging a plurality of groups of fault indicators at equal intervals along a power grid line, establishing wireless connection between the fault indicators and a main station, and transmitting circuit change information to the main station by the fault indicators in real time;
s2, the main station numbers the fault indicators in sequence according to the installation time, and the main station numbers the area between every two adjacent fault indicators as a detection area;
s3, when a fault occurs in a certain area, the alarm modules of the fault indicators before the fault point start to work, and the alarm modules of the fault indicators after the fault point do not work;
s4, after receiving the abnormal signal of the fault indicator, the main station judges the type of the fault and positions the fault to the area generating the fault, the positioning method of the fault area is that the fault type and the fault area are displayed by the display module of the main station and the displayed information is sent to the mobile terminal, and the last red card point is positioned between the first non-red card point and the second non-red card point;
s5, the fault recording module searches and compares the fault records in the set time period A before searching and comparing, searches whether faults still occur in the same area, if faults still occur in the time period A before in the same area, a piece of warning information is displayed on the display module and is sent to the mobile terminal along with the fault information;
and S6, the mobile terminal receives the information and then timely goes to a fault area for detection and maintenance, if the received information contains warning information, maintenance personnel carry a group of new fault indicators to the fault area, install the new fault indicators at the middle position of the fault area, and then establish wireless connection with the main station.
And S7, numbering the newly installed fault indicators by the master station, and dividing the detection area again.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (8)
1. A power distribution network fault detection system is characterized by comprising a fault indicator, a main station and a mobile terminal;
the fault indicators are arranged in groups at equal intervals along a power grid line, a fault detection module, an alarm module and a first communication module are arranged in the fault indicators, the fault detection module is used for detecting circuit faults, and the alarm module starts to work after the fault detection module detects the circuit faults;
the master station comprises a second communication module, a detection area division module, a fault indicator numbering module, a fault type judgment module, a display module and a fault recording module; the second communication module is in wireless communication connection with the first communication module and the mobile terminal, and the second communication module sends the content displayed by the display module to the mobile terminal; the detection region division module is used for dividing according to the installation position of the fault indicator and numbering each region; the fault indicator numbering module is used for numbering fault indicators on the power grid line; the fault type judging module is used for judging the fault type generated by the power grid line according to the information transmitted by the fault indicator; the display module is used for displaying faults generated by the power grid line and corresponding detection area numbers; the fault recording module is used for recording a previous fault area and fault time, when a new fault occurs, the fault recording module searches and compares fault records in a preset time period A before, searches whether a fault still occurs in the same area, if a fault still occurs in the previous time period A in the same area, a piece of warning information is displayed on the display module and is sent to the mobile terminal along with the fault information, the warning information is used for reminding maintenance personnel to carry a group of new fault indicators to be installed at the middle position of the area, and if the fault area reaches a preset minimum area, namely the distance between two adjacent groups of fault indicators reaches a preset minimum distance, the warning information is not generated; the mobile terminal is used for receiving the information sent by the main station.
2. The power distribution network fault detection system of claim 1, wherein the types of circuit faults detected by the fault detection module include high resistance faults, short circuit faults, ground faults, and intermittent power supply faults.
3. The system of claim 1, wherein the alarm mode of the alarm module comprises a flipper display and a light emitting display, the flipper display is used for displaying when a fault alarm occurs in the daytime, the flipper display is used for displaying when a fault alarm occurs in the nighttime, the flipper display and the light emitting display are combined, and the display board adopts a night vision reflective technology.
4. The power distribution network fault detection system of claim 1, wherein the display module further displays a graphical display of a location of occurrence of the fault.
5. The power distribution network fault detection system of claim 1, wherein the fault indicator numbering modules are numbered according to the installation sequence of the fault indicators, the numbering is a digital number, and the first digit of each fault indicator number is the number of the grid line.
6. The system according to claim 1, wherein the warning information displayed on the display module after the fault recording module compares the fault records in the time period a is "the area repeatedly has faults in the time period a, please the maintenance personnel to carry a new set of fault indicators to install in the middle of the area".
7. The system of claim 1, wherein the mobile terminal is a mobile phone or a laptop.
8. A method of detection of a system for fault detection in an electric distribution network according to any of claims 1-7, characterized in that it comprises the following steps:
s1, arranging a plurality of groups of fault indicators at equal intervals along a power grid line, establishing wireless connection between the fault indicators and a main station, and transmitting circuit change information to the main station by the fault indicators in real time;
s2, the master station numbers the fault indicators according to the installation time, and the master station numbers the area between every two adjacent fault indicators as a detection area;
s3, when a fault occurs in a certain area, the alarm modules of the fault indicators before the fault point start to work, and the alarm modules of the fault indicators after the fault point do not work;
s4, after receiving the abnormal signal of the fault indicator, the main station judges the type of the fault and positions the fault to the area generating the fault, the positioning method of the fault area is that the fault type and the fault area are displayed by the display module of the main station and the displayed information is sent to the mobile terminal, and the last red card point is positioned between the first non-red card point and the second non-red card point;
s5, the fault recording module searches and compares fault records in a preset time period A before the fault records are compared, and searches whether faults still occur in the same area, if faults still occur in the time period A before the fault records occur in the same area, a piece of warning information is displayed on the display module and is sent to the mobile terminal along with the fault information;
s6, the mobile terminal receives the information and then timely goes to a fault area for detection and maintenance, if the received information contains warning information, maintenance personnel carry a group of new fault indicators to the fault area and install the new fault indicators at the middle position of the fault area, and then the new fault indicators are wirelessly connected with the main station;
and S7, numbering the newly installed fault indicators by the master station, and dividing the detection area again.
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