Fault positioning device based on waveform analysis and positioning method thereof

Abstract

The invention provides a fault positioning device based on waveform analysis and a positioning method thereof, and belongs to the technical field of power grid fault detection, the fault positioning device comprises a fault diagnosis device and a positioner, the fault diagnosis device comprises an acquisition and collection module, a master station algorithm module and a signal sending module; the acquisition and collection module is used for studying and judging current changes and short circuit conditions and reporting remote signaling and waveforms; the master station algorithm module is used for interrogating waveforms, processing the information sent by the acquisition and collection module and carrying out topology judgment; the signal sending module is used for sending the output structure given by the master station algorithm module to an associated locator; the positioner is used for receiving the fault information and the positioning information sent by the signal sending module. According to the invention, each module in the fault diagnosis device is used for discriminating a short-circuit area, remote signaling and waveforms are collected, and fault diagnosis and topology judgment are carried out according to the waveforms, so that a worker can timely know the fault and deal with the fault, and the repair and power transmission recovery time is shortened.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of power grid fault detection, and in particular to a fault locating device and a locating method thereof based on waveform analysis. Background Art

[0002] Due to historical reasons, the development of my country's power grid has long been in a state of heavy transmission and light distribution. The development of the distribution network is a weak link, and distribution network failures are the main cause of power outages for users. However, due to the complex structure and wide distribution of the distribution network, it is difficult to locate faults, effectively operate and maintain, and optimize lines. There is an urgent need for effective fault detection and positioning methods.

[0003] At present, when monitoring transmission line faults, the more commonly used method is to use current detection technology, which can only roughly indicate the direction and section of the fault point, but cannot accurately determine the location, such as which tower or which phase. This requires manual line inspection to check the fault point, which is not only labor-intensive and time-consuming, delaying the time for emergency repairs and power restoration, but also making it difficult to achieve a good solution to power supply reliability. Summary of the invention

[0004] The present invention mainly provides a fault location device and a location method based on waveform analysis to solve the technical problems raised in the above background technology.

[0005] The technical solution adopted by the present invention to solve the above technical problems is:

[0006] A fault location device based on waveform analysis, comprising a fault diagnosis device and a locator, wherein the fault diagnosis device comprises a collection and aggregation module, a master station algorithm module, and a signal sending module;

[0007] The acquisition and collection module is used to judge the current change and short circuit situation and report the remote signal and waveform, and to judge and report the remote signal and waveform to the master station; the master station algorithm module is used to call the waveform, process the information sent by the acquisition and collection module, make topological judgment, and output the result; the signal sending module is used to send the output structure given by the master station algorithm module to the associated locator;

[0008] The locator is used to receive the fault information and positioning information sent by the signal sending module.

[0009] Furthermore, in the present invention, an overcurrent protection module is also provided inside the fault diagnosis device, and the module is used for tripping the overcurrent protection when the current in the fault area suddenly increases.

[0010] Furthermore, in the present invention, a navigation module is provided inside the locator, and the navigation module is used for navigating according to the positioning information transmitted by the signal sending module.

[0011] Furthermore, in the present invention, a speaker is provided on the top of the locator, and the speaker is mainly used to broadcast the navigation information broadcast by the navigation module.

[0012] Furthermore, in the present invention, the fault locating device also includes a carrying component, the carrying component includes an installation box, the front side and the top of the installation box are provided with installation slots adapted to the locator, the rear side of the installation box is installed with a nylon belt, and the ends of the two nylon belts are installed with nylon buckles.

[0013] Furthermore, in the present invention, a snap buckle is provided on the rear side of the installation box, and the nylon belt passes through the inside of the snap buckle.

[0014] Furthermore, in the present invention, a hollow accommodating block is provided on one side of the installation box, a telescopic shaft that passes through the installation box is installed on the outside of the accommodating block, a pull button is installed on the outer end of the telescopic shaft, a snap block is installed on the inner end of the telescopic shaft, a compression spring is sleeved on the telescopic shaft inside the accommodating block, a limiting block is installed on the telescopic shaft on the inner side of the compression spring, and a snap groove that matches the snap block is provided on one side of the locator.

[0015] Furthermore, in the present invention, the buckle block is a wedge structure with an inclined surface at the top.

[0016] Further, in the present invention, the positioning method used by any of the above-mentioned fault positioning devices based on waveform analysis comprises the following steps:

[0017] Step 1: When a short circuit occurs, the overcurrent protection module in the fault diagnosis device trips the area for protection;

[0018] Step 2: The collection and aggregation module makes local judgments based on the sudden change current, fault duration, and whether the line is out of power, and reports the remote signal and waveform;

[0019] Step 3: The master station algorithm module uses the fault diagnosis algorithm based on the CNN model to make topology judgments and output the results;

[0020] Step 4: Send the output result to the locator through the signal sending module.

[0021] Furthermore, the present invention further comprises the following steps:

[0022] Step 5: After the locator receives the fault location information transmitted by the signal sending module, the navigation module of the locator will formulate a navigation route and broadcast the route through the speaker.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention uses the acquisition and collection module, the master station algorithm module, the signal transmission module, and the overcurrent protection module in the fault diagnosis device to identify the short-circuit area, collect remote signals and waveforms, and then perform fault diagnosis and topology judgment based on the waveforms, so that the staff can know in time to deal with it, reducing the time for emergency repair and power restoration;

[0025] At the same time, the carrying component can facilitate the carrying of the locator, so that the staff can carry the locator outside and use it in time, and quickly lock the fault area through the navigation module in the locator, so that the staff can rush to deal with it in time and improve work efficiency.

[0026] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the fault location device of the present invention;

[0028] Figure 2 It is a schematic diagram of a fault location device module of the present invention;

[0029] Figure 3 It is a schematic diagram of the structure of the positioner and the carrying assembly of the present invention;

[0030] Figure 4 It is a schematic diagram of the structure of the installation box of the present invention;

[0031] Figure 5 It is a schematic diagram of the structure of the positioner of the present invention;

[0032] Figure 6 It is a schematic cross-sectional view of the installation box structure of the present invention.

[0033] In the figure: 10, fault diagnosis device; 20, locator; 21, speaker; 22, buckle slot; 30, collection and aggregation module; 40, master station algorithm module; 50, signal sending module; 60, overcurrent protection module; 70, carrying component; 71, installation box; 72, nylon belt; 73, nylon buckle; 74, return buckle; 75, accommodation block; 76, pull button; 77, telescopic shaft; 78, buckle block; 79, compression spring; 710, limit block; 711, installation notch. DETAILED DESCRIPTION

[0034] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0035] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0037] For examples, please refer to the attached Figure 1-6 , a fault location device based on waveform analysis, including a fault diagnosis device 10 and a locator 20, wherein the fault diagnosis device 10 includes a collection module 30, a master station algorithm module 40, and a signal sending module 50;

[0038] The acquisition and collection module 30 is used to judge the current change and short circuit situation and report the remote signal and waveform, and to report the judgment, remote signal and waveform to the master station; the master station algorithm module 40 is used to call the waveform, process the information sent by the acquisition and collection module 30, make a topological judgment, and output the result; the signal sending module 50 is used to send the output structure given by the master station algorithm module 40 to the associated locator 20;

[0039] The locator 20 is used to receive the fault information and positioning information sent by the signal sending module 50 .

[0040] For details, please refer to the attached Figure 2 , the fault diagnosis device 10 is also provided with an overcurrent protection module 60, which is used for the sudden increase of current in the fault area and the overcurrent protection tripping;

[0041] It should be noted that, in the present embodiment, the common causes of short circuit failure are: 1. Short circuit caused by thermal aging of equipment or line insulation; 2. Short circuit caused by foreign objects, mainly birds roosting or other conductive foreign objects falling on the power supply line for various reasons, causing short circuit; 3. Due to weather reasons and lightning strikes, the voltage is extremely high and the instantaneous current is very large. When the power supply line is struck by lightning, the phase-to-phase distance and the insulation line of the power supply line cannot withstand it, causing phase-to-phase arc short circuit or insulation breakdown to the ground, which leads to short circuit; 4. Different phases are grounded at different positions on the same line, causing the two phases to be connected through the ground, resulting in a short circuit between the two phases. The overcurrent protection module 60 can quickly trip after a short circuit to protect the device.

[0042] For details, please refer to the attached Figure 5 The locator 20 is provided with a navigation module inside, and the navigation module is used to navigate according to the positioning information transmitted by the signal sending module 50;

[0043] It should be noted that, in this embodiment, the navigation module can quickly plan a path from the locator 20 to the fault location, so that the staff can quickly rush to the fault point for maintenance.

[0044] For details, please refer to the attached Figure 5 A speaker 21 is provided on the top of the locator 20, and the speaker 21 is mainly used to broadcast the navigation information broadcast by the navigation module;

[0045] It should be noted that, in this embodiment, the speaker 21 can help the staff know the navigation route, so that the staff can reach the fault location according to the voice prompt without watching the locator 20, which increases the convenience.

[0046] For details, please refer to the attached Figure 5 The fault locating device further comprises a carrying assembly 70, wherein the carrying assembly 70 comprises an installation box 71, wherein the front side and the top of the installation box 71 are provided with installation slots 711 adapted to the locator 20, and a nylon belt 72 is installed at the rear side of the installation box 71, and nylon buckles 73 are installed at the ends of the two nylon belts 72;

[0047] It should be noted that in this embodiment, when the staff goes to the fault location, they can insert the locator 20 into the installation slot 711 of the installation box 71, and then tie the nylon belt 72 around the waist, so as to facilitate the external carrying of the locator 20 and to facilitate the access to the locator 20 for checking at any time.

[0048] For details, please refer to the attached Figure 4 A snap buckle 74 is provided on the rear side of the installation box 71, and the nylon belt 72 passes through the snap buckle 74;

[0049] It should be noted that, in this embodiment, the nylon belt 72 and the installation box 71 are detachable, so as to facilitate the replacement of accessories.

[0050] For details, please refer to the attached Figure 6A hollow accommodation block 75 is provided on one side of the installation box 71, a telescopic shaft 77 penetrating into the installation box 71 is installed on the outside of the accommodation block 75, a pull button 76 is installed on the outer end of the telescopic shaft 77, a buckle block 78 is installed on the inner end of the telescopic shaft 77, a compression spring 79 is sleeved on the telescopic shaft 77 inside the accommodation block 75, a limiting block 710 is installed on the telescopic shaft 77 on the inner side of the compression spring 79, and a buckle groove 22 adapted to the buckle block 78 is provided on one side of the positioner 20;

[0051] It should be noted that, in this embodiment, after the locator 20 is inserted into the installation box 71, the snap block 78 will pop out from the snap groove 22, thereby fixing the locator 20 to prevent the locator 20 from popping out from the installation box 71 when the staff moves, thereby increasing stability. When the locator 20 needs to be removed, it is only necessary to pull the pull button 76 from the outside to allow the telescopic shaft 77 to drive the snap block 78 to be retracted, and then slide the locator 20 upwards, which is simple and convenient.

[0052] For details, please refer to the attached Figure 6 , the buckle block 78 is a wedge structure with an inclined surface at the top;

[0053] It should be noted that, in this embodiment, the snap block 78 with an inclined top can facilitate the insertion of the locator 20, and the snap block 78 will not block the locator 20. The snap block 78 will pop out only when the locator 20 is fully inserted, thereby increasing practicality.

[0054] For details, please refer to the attached Figure 2 , the positioning method used by any of the above-mentioned fault positioning devices based on waveform analysis comprises the following steps:

[0055] Step 1: When a short circuit occurs, the overcurrent protection module 60 in the fault diagnosis device 10 performs trip protection on the area;

[0056] Step 2: The collection and collection module 30 performs local analysis based on the sudden change current, fault duration, and whether the line is out of power, and reports the remote signal and waveform;

[0057] Step 3: The master station algorithm module 40 performs topology judgment and outputs the result through a fault diagnosis algorithm based on a CNN model;

[0058] Step 4: Send the output result to the locator 20 via the signal sending module 50 .

[0059] Step 5: After the locator 20 receives the fault location information transmitted by the signal sending module 50, the navigation module of the locator 20 will plan a navigation route and broadcast the route through the speaker 21;

[0060] It should be noted that, in this embodiment, the collection and aggregation module 30 will first identify the short-circuit area, distinguish the short-circuit type in the area, and collect the telesignals and waveforms to upload to the main station. The main station algorithm module 40 will then perform fault diagnosis and topology judgment based on the telesignals and waveforms, and finally send the obtained results to the locator 20. The short-circuit fault calculation is clear, which is convenient for the staff to know in time and go to deal with it, reducing the time for emergency repairs and power restoration, and improving the reliability of power supply, while greatly reducing the number of fault line patrol personnel.

[0061] The above is an exemplary description of the present invention in combination with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A fault location device based on waveform analysis, comprising a fault diagnosis device (10) and a locator (20), characterized in that: The fault diagnosis device (10) comprises a data collection module (30), a master station algorithm module (40), and a signal sending module (50); The acquisition and collection module (30) is used to analyze and judge the current change and short circuit situation and report the remote signal and waveform, and to analyze and judge, report the remote signal and waveform to the master station; the master station algorithm module (40) is used to call for waveform measurement, process the information sent by the acquisition and collection module (30), perform topology judgment, and output the result; the signal sending module (50) is used to send the output structure given by the master station algorithm module (40) to the associated locator (20); The locator (20) is used to receive fault information and positioning information sent by the signal sending module (50).

2. A fault location device based on waveform analysis according to claim 1, characterized in that: An overcurrent protection module (60) is also provided inside the fault diagnosis device (10), and is used to perform overcurrent protection tripping when a current surge occurs in a fault area.

3. A fault location device based on waveform analysis according to claim 1, characterized in that: A navigation module is arranged inside the locator (20), and the navigation module is used to perform navigation according to the positioning information transmitted by the signal sending module (50).

4. A fault location device based on waveform analysis according to claim 3, characterized in that: A speaker (21) is arranged on the top of the locator (20), and the speaker (21) is mainly used to broadcast the navigation information broadcast by the navigation module.

5. A fault location device based on waveform analysis according to claim 1, characterized in that: The fault locating device also includes a carrying assembly (70), the carrying assembly (70) includes a mounting box (71), the front side and top of the mounting box (71) are provided with mounting slots (711) adapted to the locator (20), the rear side of the mounting box (71) is provided with a nylon belt (72), and the ends of the two nylon belts (72) are provided with nylon buckles (73).

6. A fault location device based on waveform analysis according to claim 5, characterized in that: A snap buckle (74) is provided on the rear side of the installation box (71), and the nylon belt (72) passes through the inside of the snap buckle (74).

7. A fault location device based on waveform analysis according to claim 5, characterized in that: A hollow accommodating block (75) is provided on one side of the installation box (71), a telescopic shaft (77) penetrating into the installation box (71) is installed on the outside of the accommodating block (75), a pull button (76) is installed on the outer end of the telescopic shaft (77), a buckle block (78) is installed on the inner end of the telescopic shaft (77), a compression spring (79) is sleeved on the telescopic shaft (77) inside the accommodating block (75), a limiting block (710) is installed on the telescopic shaft (77) on the inner side of the compression spring (79), and a buckle groove (22) adapted to the buckle block (78) is provided on one side of the positioner (20).

8. A fault location device based on waveform analysis according to claim 7, characterized in that: The buckle block (78) is a wedge structure with an inclined surface at the top.

9. The positioning method used by any one of the waveform analysis-based fault positioning devices according to claims 1 to 8, characterized in that: The following steps are involved: Step 1: When a short circuit occurs, the overcurrent protection module (60) in the fault diagnosis device (10) performs tripping protection on the area; Step 2: The data collection module (30) performs local analysis based on the sudden change current, fault duration, and whether the line is out of power, and reports the remote signal and waveform; Step 3: The master station algorithm module (40) performs topology judgment and outputs the result through a fault diagnosis algorithm based on a CNN model; Step 4: Send the output result to the locator (20) through the signal sending module (50).

10. The positioning method used by the fault positioning device based on waveform analysis according to claim 9, characterized in that: The following steps are also included: Step 5: After the locator (20) receives the fault location information transmitted by the signal sending module (50), the navigation module of the locator (20) will formulate a navigation route and broadcast the route through a speaker.

Images