An insulator leakage detection system and method

Abstract

The present invention provides an insulator leakage detection system and method, which relates to the technical field of leakage detection. It includes a depth camera, which is used to collect insulator images in the daily mode or the flashover mode, transmit the insulator images to the controller and receive the instructions sent by the controller; a controller, which is used to receive the insulator images transmitted by the depth camera, judge whether insulator flashover occurs based on the insulator images, and when insulator flashover occurs, send a flashover mode instruction to the depth camera and simultaneously send an alarm signal to the remote monitoring platform; a remote monitoring platform, which is used to receive the alarm signal sent by the controller, perform alarm operations and determine the position of the flashover insulator according to the alarm signal. The present invention can efficiently and accurately monitor the insulator flashover or leakage current situation, give an alarm in time when a fault occurs for processing, facilitate the daily acquisition of the insulator state, so as to ensure that the insulator is cleaned at the optimal time.

Description

Technical Field

[0001] The present invention belongs to the technical field of leakage detection, and particularly relates to an insulator leakage detection system and method. Background Art

[0002] The statements in this part only provide background technical information related to the present invention, and do not necessarily constitute prior art.

[0003] Insulators are one of the most common electrical equipment in the power system. Dirt will deposit on the surface of insulators operating outdoors. In the dry state, the dirt has little impact on the insulation ability of the insulators, and the contaminated insulators basically do not discharge. However, the climate conditions where the insulators are wet but the dirt does not wash away are the greatest challenges faced by the contaminated insulators, such as fog, drizzle, light rain, snowmelt, dew and other weather conditions. At this time, the soluble electrolytes in the dirt absorb water and form a conductive water film, reducing the insulation performance of the insulators and increasing the probability of flashover. Since the environmental factors in a region are basically the same and the pollution accumulation of insulators is similar, once a flashover occurs on one insulator, hundreds of thousands of insulators in the same region will be on the verge of flashover. When the flashover of the insulators is serious, it will cause the substation to trip, resulting in a large-scale power outage. After the tripping phenomenon occurs, even if the switch can be reclosed, it will still affect the power consumption and cause incalculable losses. Especially with the continuous deterioration of the atmospheric environment and the increasing acidification of rainfall, large-scale pollution flashover accidents occur frequently, seriously threatening the safe operation of the power grid.

[0004] Therefore, in order to ensure the safe operation of the power grid, it is necessary to avoid large leakage currents or flashover breakdown phenomena in the insulator string. At the same time, after an insulator leakage or flashover accident occurs in the power grid or transmission line, it is related to the power consumption of many users in society. It cannot be neglected for a moment and the sense of urgency is very strong. It must be dealt with immediately to restore power supply: First, it is necessary to immediately know which line, which tower, and which string of insulators have experienced flashover in order to clean up immediately and quickly restore power transmission.

[0005] In order to avoid the substation tripping caused by insulator flashover, the method of regularly cleaning the insulators is generally adopted at present. However, the inventor found that in the prior art, the dust on the surface of high-voltage insulators can only be cleaned regularly or by observation, which has great subjectivity. It is very difficult to accurately judge the degree of dirt on the surface of the insulators, thus missing the best cleaning time and unable to ensure that the insulators are cleaned at the best cleaning time, increasing the risk of generating leakage current or flashover breakdown phenomena. For the method of regularly treating the insulators, if the interval period is too short, it will cause waste of resources and consume manpower and material resources. If the interval period is too long, it will also increase the risk of generating leakage current or flashover breakdown phenomena.

[0006] Meanwhile, in the event of a power outage caused by an insulator, it is impossible to efficiently locate the fault location, thus affecting the safe operation. Summary of the Invention

[0007] To overcome the deficiencies of the above-mentioned prior art, the present invention provides an insulator leakage detection system and method, which can efficiently and accurately monitor the flashover or leakage current of insulators, give an alarm in time when a fault occurs, and facilitate the daily acquisition of the insulator state, so as to ensure that the insulators are cleaned at the optimal time, improve the cleaning efficiency, reduce the failure rate, and save manpower and material costs.

[0008] To achieve the above object, one or more embodiments of the present invention provide the following technical solutions:

[0009] The first aspect of the present invention provides an insulator leakage detection system.

[0010] An insulator leakage detection system includes a controller, a depth camera, and a remote monitoring platform:

[0011] The depth camera is used to collect insulator images according to the daily mode or the flashover mode, transmit the insulator images to the controller, and receive the instructions sent by the controller;

[0012] The controller is used to receive the insulator images transmitted by the depth camera, judge whether insulator flashover occurs based on the insulator images, and when insulator flashover occurs, send a flashover mode instruction to the depth camera and send an alarm signal to the remote monitoring platform at the same time;

[0013] The remote monitoring platform is used to receive the alarm signal sent by the controller, perform an alarm operation, and determine the position of the flashover insulator according to the alarm signal.

[0014] Preferably, the daily mode is that the depth camera acquires insulator images according to a set photographing frequency.

[0015] Preferably, the flashover mode is that the depth camera acquires continuous insulator images within a set time period.

[0016] Preferably, it further includes a leakage current acquisition module, which is used to collect real-time leakage current data on the surface of the insulator and transmit the real-time leakage current data to the controller.

[0017] Preferably, the controller is further used to receive the real-time leakage current data transmitted by the leakage current acquisition module, compare the real-time leakage current data with a set threshold, and if the real-time leakage current data is greater than the set threshold, send an alarm signal to the remote monitoring platform.

[0018] Preferably, it further includes a temperature sensing module, which is used to obtain the real-time temperature signal of the environment where the insulator is located and transmit the real-time temperature signal to the controller.

[0019] Preferably, it further includes a humidity sensing module, which is used to obtain the real-time humidity signal of the environment where the insulator is located and transmit the real-time humidity signal to the controller.

[0020] Preferably, it further includes a remote communication module, which is used for communication between the controller and the remote monitoring platform.

[0021] Preferably, it further includes a GPS positioning module, which is used to locate the position of the insulator.

[0022] The second aspect of the present invention provides a method for detecting insulator leakage.

[0023] A method for detecting insulator leakage according to any one of claims 1-9, comprising the following steps:

[0024] The depth camera collects insulator images in the daily mode and sends the obtained insulator images to the controller;

[0025] The controller receives the insulator images sent by the depth camera, judges whether insulator flashover occurs based on the insulator images. If so, it sends a flashover mode instruction to the depth camera and sends an alarm signal to the remote monitoring platform at the same time;

[0026] The depth camera receives the flashover mode instruction sent by the controller, collects insulator images in the flashover mode, and sends the obtained insulator images to the controller;

[0027] The remote monitoring platform receives the alarm signal sent by the controller, performs an alarm operation, and determines the position of the flashover insulator according to the alarm signal.

[0028] The above one or more technical solutions have the following beneficial effects:

[0029] 1. The present invention provides a system and method for detecting insulator leakage. By taking pictures of the insulator with a depth camera, images of the daily state and flashover state of the insulator can be obtained. Based on the daily state image of the insulator, it can be determined when to clean the insulator, the best cleaning time can be judged, the cleaning efficiency is improved, and manpower is saved; based on the flashover state image of the insulator, the flashover level and fault information can be obtained, which is convenient for the subsequent processing of the power grid flashover fault and the analysis of the flashover situation.

[0030] 2. The insulator leakage detection system of the present invention is also provided with a leakage current acquisition module, so that while collecting the daily images and flashover images of the insulator, it can also collect the leakage current data on the surface of the insulator, and jointly detect and judge the state of the insulator through two methods, which is more accurate.

[0031] 3. The present invention can realize the real-time monitoring of the insulator state through a remote monitoring platform. When the insulator state is abnormal, such as when flashover occurs or the leakage current is too large, the controller will send an alarm signal to the remote monitoring platform. Combining with the GPS positioning module, the position of the faulty insulator can be obtained in time, so as to facilitate the subsequent restoration of the normal operation of the power grid.

[0032] Advantages of additional aspects of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The specification drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0034] Figure 1 It is the system structure diagram of the first embodiment.

[0035] Figure 2 It is the method flow chart of the second embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs.

[0037] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention.

[0038] In the case of no conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0039] Embodiment 1

[0040] This embodiment discloses an insulator leakage detection system.

[0041] As Figure 1 shown, an insulator leakage detection system includes a controller, a depth camera, and a remote monitoring platform:

[0042] A depth camera, which is used to collect insulator images in the daily mode or the flash mode, transmit the insulator images to the controller and receive the instructions sent by the controller;

[0043] A controller, which is used to receive the insulator images transmitted by the depth camera, judge whether insulator flashover occurs based on the insulator images, and when insulator flashover occurs, send a flash mode instruction to the depth camera and send an alarm signal to the remote monitoring platform at the same time;

[0044] A remote monitoring platform, which is used to receive the alarm signal sent by the controller, perform an alarm operation and determine the position of the flashover insulator according to the alarm signal.

[0045] In this embodiment, the alarm operation includes a flash light and a buzzer alarm device for reminding the staff.

[0046] Further, the daily mode is that the depth camera acquires insulator images according to a set photographing frequency.

[0047] By acquiring insulator images in the daily mode, it can be used as a monitoring means for the daily state of insulators, so as to obtain the pollution condition on the surface of insulators and perform insulator cleaning work at the optimal time.

[0048] Further, the flash mode is that the depth camera acquires continuous insulator images within a set time period.

[0049] When a flashover occurs, the depth camera continuously acquiring insulator images is beneficial for subsequent analysis of the flashover fault and is also convenient for classifying the flashover level.

[0050] Further, it further includes a leakage current acquisition module, which is used to acquire real-time leakage current data on the surface of the insulator and transmit the real-time leakage current data to the controller.

[0051] The leakage current acquisition module can not only acquire the daily leakage current condition of the insulator in real time, but also acquire the leakage current of the insulator under the flashover fault when a flashover occurs, so as to better analyze the flashover situation.

[0052] In this embodiment, the leakage current acquisition module includes a current collector, and the current collector is in contact with the surface of the insulator for acquiring the leakage current on the surface of the insulator; at least one current collector is set for each insulator for acquiring the leakage current on the surface of the insulator.

[0053] Further, the current collector is usually set at the bottom of the insulator, and its main function is to collect the leakage current of the insulator to the maximum extent.

[0054] Further, the controller is further configured to receive the real-time leakage current data transmitted by the leakage current acquisition module, compare the real-time leakage current data with a set threshold, and if the real-time leakage current data is greater than the set threshold, send an alarm signal to the remote monitoring platform.

[0055] Through the above leakage current acquisition module, two monitoring methods of image monitoring and leakage current monitoring for insulators are realized, so as to obtain a more accurate monitoring effect and detection accuracy.

[0056] Further, it further includes a temperature sensing module, which is used to obtain the real-time temperature signal of the environment where the insulator is located and transmit the real-time temperature signal to the controller.

[0057] Further, it further includes a humidity sensing module, which is used to obtain the real-time humidity signal of the environment where the insulator is located and transmit the real-time humidity signal to the controller.

[0058] Further, it further includes a remote communication module, which is used for communication between the controller and the remote monitoring platform.

[0059] Further, it further includes a GPS positioning module, which is used to locate the position of the insulator.

[0060] When a flashover fault occurs, or when the leakage current data is too large, the controller sends the GPS positioning information to the remote monitoring platform while sending the alarm signal to the remote monitoring platform, which is convenient for efficiently dealing with the insulators with flashover faults or leakage current faults and ensuring the safe operation of the power grid.

[0061] Embodiment 2

[0062] This embodiment discloses a method for detecting insulator leakage.

[0063] As Figure 2 shown, a detection method based on the insulator leakage detection system described in Embodiment 1 includes the following steps:

[0064] The depth camera collects insulator images in the daily mode and sends the obtained insulator images to the controller;

[0065] The controller receives the insulator images sent by the depth camera, judges whether insulator flashover occurs based on the insulator images. If so, it sends a flashover mode instruction to the depth camera and sends an alarm signal to the remote monitoring platform at the same time;

[0066] The depth camera receives the flashover mode instruction sent by the controller, collects insulator images in the flashover mode, and sends the obtained insulator images to the controller;

[0067] The remote monitoring platform receives the alarm signal sent by the controller, performs the alarm operation, and determines the position of the flashover insulator according to the alarm signal.

[0068] Those skilled in the art should understand that the above-mentioned modules or steps of the present invention can be implemented by a general-purpose computer device. Optionally, they can be implemented by program codes executable by a computing device. Thus, they can be stored in a storage device and executed by the computing device, or they can be separately fabricated into individual integrated circuit modules, or multiple modules or steps among them can be fabricated into a single integrated circuit module to be implemented. The present invention is not limited to any specific combination of hardware and software.

[0069] Although the specific implementation manners of the present invention are described above in conjunction with the accompanying drawings, it is not a limitation on the protection scope of the present invention. Those skilled in the art should understand that based on the technical solution of the present invention, various modifications or deformations that can be made by those skilled in the art without creative efforts are still within the protection scope of the present invention.

Claims

1. An insulator leakage detection system, characterized in that, it includes a controller, a depth camera and a remote monitoring platform: The depth camera is used to collect insulator images in the daily mode or the flashover mode, transmit the insulator images to the controller and receive instructions sent by the controller; the daily mode is: the depth camera obtains insulator images according to the set photographing frequency; by obtaining insulator images through the daily mode, as a monitoring means for the daily state of the insulator, the pollution condition on the surface of the insulator can be obtained, and the insulator cleaning work can be carried out at the optimal time; the flashover mode is: the depth camera obtains continuous insulator images within a set time period; The controller is used to receive the insulator images transmitted by the depth camera, judge whether insulator flashover occurs based on the insulator images, and when insulator flashover occurs, send a flashover mode instruction to the depth camera and send an alarm signal to the remote monitoring platform at the same time; The remote monitoring platform is used to receive the alarm signal sent by the controller, perform an alarm operation and determine the position of the flashover insulator according to the alarm signal.

2. The insulator leakage detection system according to claim 1, characterized in that, it further includes a leakage current acquisition module, which is used to collect real-time leakage current data on the surface of the insulator and transmit the real-time leakage current data to the controller.

3. The insulator leakage detection system according to claim 2, characterized in that, the controller is further used to receive the real-time leakage current data transmitted by the leakage current acquisition module, compare the real-time leakage current data with a set threshold, and if the real-time leakage current data is greater than the set threshold, send an alarm signal to the remote monitoring platform.

4. The insulator leakage detection system according to claim 1, characterized in that, it further includes a temperature sensing module, which is used to obtain the real-time temperature signal of the environment where the insulator is located and transmit the real-time temperature signal to the controller.

5. The insulator leakage detection system according to claim 1, characterized in that, it further includes a humidity sensing module, which is used to obtain the real-time humidity signal of the environment where the insulator is located and transmit the real-time humidity signal to the controller.

6. The insulator leakage detection system according to claim 1, characterized in that, it further includes a remote communication module, which is used for communication between the controller and the remote monitoring platform.

7. The insulator leakage detection system according to claim 1, characterized in that, it further includes a GPS positioning module, which is used to locate the position of the insulator.

8. An insulator leakage detection method, applied to the insulator leakage detection system according to any one of claims 1-7, characterized in that: it includes the following steps: The depth camera collects insulator images according to the daily mode and sends the obtained insulator images to the controller; The controller receives the insulator images sent by the depth camera, judges whether insulator flashover occurs based on the insulator images, and if so, sends a flashover mode instruction to the depth camera and sends an alarm signal to the remote monitoring platform at the same time; The depth camera receives the flashover mode instruction sent by the controller, collects insulator images according to the flashover mode and sends the obtained insulator images to the controller; The remote monitoring platform receives the alarm signal sent by the controller, performs the alarm operation, and determines the position of the flashover insulator according to the alarm signal.

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