Substation fault point monitoring method and device

Abstract

This application discloses a method and apparatus for monitoring fault points in a substation. The method includes: receiving a fault signal and identifying a first device that issued the fault signal; identifying a second device associated with the first device based on the substation's power grid topology, and designating both the first and second devices as fault points; for any fault point, acquiring abnormal alarm log video from the video monitoring device corresponding to the fault point, determining the fault type of the fault point based on the abnormal alarm log video, wherein the fault type includes one or more associated abnormal alarms; and acquiring a preset number of abnormal video frames from the abnormal alarm log video corresponding to each abnormal alarm type, using these frames as the fault monitoring screen for the fault point. This application solves the technical problem that control personnel cannot quickly and accurately determine the status of on-site equipment after a substation fault occurs, leading to low fault handling efficiency.

Description

Technical Field

[0001] The present application relates to the field of substation safety technology, and in particular to a substation fault point monitoring method and device. Background Art

[0002] With the popularization of unmanned substations, substation video surveillance systems have become one of the important means for control personnel to promptly and accurately determine the cause of power grid operation failures. At present, the number and distribution of cameras in the video surveillance system in substations cannot meet the daily application of control due to blind spots. With the trial operation of the substation video analysis system, it was found that the machine recognition algorithm currently used is affected by the characteristics of different video scenes in the station, and there are many false alarm problems. When the power grid fails, a large number of related fault signals often appear. Controllers often need to rely on experience and knowledge to view the video surveillance images of multiple rooms in a substation, or even multiple rooms in a multi-level substation to find abnormal phenomena, which makes it difficult to efficiently and accurately determine the cause and location of the fault.

[0003] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0004] The embodiments of the present application provide a method and device for monitoring fault points in a substation, so as to at least solve the technical problem that after a substation fault occurs, control personnel are unable to quickly and accurately determine the status of on-site equipment, resulting in low fault handling efficiency.

[0005] According to one aspect of an embodiment of the present application, a method for monitoring a fault point in a substation is provided, comprising: receiving a fault signal, and determining a first device that sends the fault signal; determining a second device associated with the first device based on a power grid topology within the substation, and determining both the first device and the second device as fault points; for any of the fault points, obtaining an abnormal alarm log video in a video monitoring device corresponding to the fault point, and determining a fault type of the fault point based on the abnormal alarm log video, wherein the fault type includes one or more associated abnormal types; obtaining a preset number of frames of abnormal video images in the abnormal alarm log video corresponding to each of the abnormal types in the fault type as a fault monitoring image of the fault point.

[0006] Optionally, a power grid topology within the substation is obtained; an upstream device and / or a downstream device connected to the first device is determined based on the power grid topology, and the upstream device and / or the downstream device is used as the second device.

[0007] Optionally, the abnormality types include at least: fire, smoke and electric arc; the abnormality alarm types include at least: a fire alarm issued when a fire is detected, a smoke alarm issued when smoke is detected, and an arc alarm issued when an electric arc is detected.

[0008] Optionally, determine the video monitoring device corresponding to the fault point, wherein the video monitoring device includes an abnormal alarm module, and the abnormal alarm module is used to issue an abnormal alarm and store an abnormal alarm log video when an abnormality is detected; obtain all the abnormal alarm log videos stored in the abnormal alarm module within a preset time period.

[0009] Optionally, all the abnormal alarm log videos stored in the abnormal alarm module within a preset time period are sorted out to determine the type of abnormal alarm that occurs and the first alarm time of each abnormal alarm, and the order of each abnormal alarm is determined based on the first alarm time; based on the type of abnormal alarm that occurs and the order of each abnormal alarm, the fault type of the fault point is determined.

[0010] Optionally, when the fire alarm appears first and the smoke alarm appears later, the fault type of the fault point is determined to be a first type of fault; when the fire alarm appears first, the smoke alarm appears later, and then the arc alarm appears, the fault type of the fault point is determined to be a second type of fault; when only the smoke alarm appears, the fault type of the fault point is determined to be a third type of fault; when the smoke alarm appears first and then the fire alarm appears, the fault type of the fault point is determined to be a fourth type of fault; when the smoke alarm appears first, the fire alarm appears later, and then the arc alarm appears, the fault type of the fault point is determined to be a fifth type of fault; when only the arc alarm appears, the fault type of the fault point is determined to be a sixth type of fault; when the arc alarm appears first, the fire alarm appears later, and then the smoke alarm appears, the fault type of the fault point is determined to be a seventh type of fault.

[0011] Optionally, the first abnormal alarm log video corresponding to each of the abnormal types in the fault types is determined; a preset number of frames of abnormal video images are selected from each of the first abnormal alarm log videos as the fault monitoring images of the fault point.

[0012] According to another aspect of an embodiment of the present application, a substation fault point monitoring device is also provided, including: a first determination module, used to receive a fault signal and determine a first device that sends the fault signal; a second determination module, used to determine a second device associated with the first device based on the power grid topology in the substation, and determine both the first device and the second device as fault points; a third determination module, used to obtain, for any of the fault points, an abnormal alarm log video in a video monitoring device corresponding to the fault point, and determine a fault type of the fault point based on the abnormal alarm log video, wherein the fault type includes one or more associated abnormal types; an acquisition module, used to obtain a preset number of frames of abnormal video images in the abnormal alarm log video corresponding to each of the abnormal types in the fault type as a fault monitoring image of the fault point.

[0013] According to another aspect of an embodiment of the present application, a non-volatile storage medium is also provided, wherein the non-volatile storage medium includes a stored program, wherein when the program is running, the device where the non-volatile storage medium is located is controlled to execute the above-mentioned substation fault point monitoring method.

[0014] According to another aspect of an embodiment of the present application, a processor is further provided, wherein the processor is used to run a program, wherein the above-mentioned substation fault point monitoring method is executed when the program is run.

[0015] In an embodiment of the present application, when a fault signal is received, the first device that sends the fault signal is first determined, and then the second device associated with the first device is determined based on the power grid topology in the substation, and the first device and the second device are both determined as fault points; for any fault point, the abnormal alarm log video in the video monitoring device corresponding to the fault point can be obtained, and the fault type of the fault point can be determined based on the abnormal alarm log video, wherein the fault type includes one or more associated abnormal types; then a preset number of frames of abnormal video images in the abnormal alarm log video corresponding to each abnormal type in the fault type can be obtained as the fault monitoring image of the fault point. Among them, based on the topological relationship between the equipment in the substation and the multi-level association relationship between the abnormal types in different fault types, the key frame fault images at the fault point can be quickly and efficiently located and displayed to the control personnel, thereby improving the efficiency of fault handling, and further solving the technical problem that the control personnel cannot quickly and accurately judge the status of the on-site equipment after a fault occurs in the substation, resulting in low fault handling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 It is a flow chart of a method for monitoring a fault point of a substation according to an embodiment of the present application;

[0018] Figure 2 is a schematic diagram of a power grid topology in a substation according to an embodiment of the present application;

[0019] Figure 3 is a schematic diagram of a substation fault point monitoring according to an embodiment of the present application;

[0020] Figure 4 It is a structural schematic diagram of a substation fault point monitoring device according to an embodiment of the present application. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0022] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0023] Example 1

[0024] At present, when remotely monitoring the operation of substations, the first way for control personnel is to analyze the data collected by on-site sensors. However, many fault characteristics cannot be reflected in the data. In addition to sending personnel to the site for investigation and inspection, it is difficult to obtain first-hand and intuitive information. The second way is to use manual selection and retrieval of on-site videos as the main working means to confirm the operating status of on-site equipment when a power grid failure occurs. If a large-scale power grid failure occurs, it is difficult for control personnel to accurately judge the status of on-site equipment in a short period of time, which seriously affects the fault handling process.

[0025] To solve the above problems, the embodiment of the present application provides a substation fault point monitoring method, which can be applied to the D5000 system to assist control personnel in monitoring substation fault points. Among them, D5000 is a new generation of smart grid dispatching technical support system basic platform, which adapts to the requirements of the five-level dispatching control system in the "big operation" system of the State Grid Corporation of China, and realizes the functions of "remote access, direct alarm transmission, horizontal connection, and vertical management". The D5000 system can integrate various data such as dispatching plans, water supply conditions, and meteorological changes for comprehensive analysis.

[0026] Figure 1 It is a flowchart of an optional substation fault point monitoring method according to an embodiment of the present application. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order than here.

[0027] like Figure 1 As shown, the method at least includes steps S102-S108, wherein:

[0028] Step S102: receiving a fault signal and determining a first device that sends the fault signal.

[0029] Step S104: determining a second device associated with the first device based on the power grid topology in the substation, and determining both the first device and the second device as fault points.

[0030] Considering that in a substation, when a certain device fails, the failure is likely to be caused by its upstream device, or will cause a short circuit failure in its downstream device. Therefore, when determining the fault point, in addition to determining the first device that sends a fault signal, the second device associated with the first device can also be determined. In some optional embodiments of the present application, the power grid topology in the substation can be obtained first, and then the upstream device and / or downstream device connected to the first device can be determined based on the power grid topology, and the upstream device and / or downstream device are used as the second device, and both the first device and the second device are determined as the fault point.

[0031] by Figure 2 For example, it is an exemplary power grid topology diagram in a substation, which includes equipment No. 1, equipment No. 2, and equipment No. 3. According to the location of the faulty equipment, the fault point can be divided into the following three categories:

[0032] Category 1: There is no upstream device but there is a downstream device. For example, if device 1 fails, the fault point can be regarded as devices 1 and 2.

[0033] Category 2: There are upstream devices and downstream devices. For example, if device 2 fails, the fault point can be considered as devices 1, 2, and 3.

[0034] Category 3: There are upstream devices but no downstream devices. For example, if device No. 3 fails, the fault point can be regarded as devices No. 2 or No. 3.

[0035] Step S106: for any fault point, obtain the abnormal alarm log video in the video monitoring device corresponding to the fault point, and determine the fault type of the fault point based on the abnormal alarm log video, wherein the fault type includes one or more associated abnormal types.

[0036] Step S108, obtaining a preset number of frames of abnormal video images in the abnormal alarm log video corresponding to each abnormal type in the fault type as the fault monitoring image of the fault point.

[0037] In a substation, abnormal types usually include: fire, smoke and electric arc; correspondingly, abnormal alarm types include: fire alarm issued when fire is detected, smoke alarm issued when smoke is detected, and arc alarm issued when arc is detected. Considering that there is usually more than one abnormality when equipment fails, such as fire and electric arc are usually accompanied by smoke, in order to present a specific and accurate fault monitoring screen to the control personnel, the embodiment of the present application first divides the fault type according to the multi-level association relationship of different abnormal types:

[0038] The first type of failure: fire occurs first, then smoke;

[0039] The second type of fault: fire occurs first, then smoke, and then arc occurs;

[0040] The third type of fault: only smoke occurs;

[0041] The fourth type of fault: smoke appears first, then fire occurs;

[0042] The fifth type of fault: smoke appears first, then fire, and then arc;

[0043] The sixth type of fault: only arc occurs;

[0044] The seventh type of fault: arc occurs first, followed by fire, and then smoke;

[0045] Optionally, considering certain scenarios, such as high-voltage equipment where people are usually prohibited from approaching, an eighth type of fault can be additionally classified: detecting the approach of people.

[0046] Afterwards, the abnormal alarm log video can be obtained from the video monitoring device corresponding to the fault point, and the specific fault type of the fault point can be determined by analyzing the relationship between the abnormal types in the abnormal alarm log video.

[0047] In some optional embodiments of the present application, the video monitoring equipment corresponding to the fault point can be determined first, wherein the video monitoring equipment generally includes, for example, a camera, a digital video recorder (DVR), and a network video recorder (NVR). It should be noted that during the installation of the video monitoring equipment, different models of cameras, DVRs, and NVRs are often used according to the type of substation. Therefore, the configuration file needs to be adaptively modified during installation so that the entire video monitoring system can work normally.

[0048] Usually, the video monitoring equipment includes an abnormal alarm module, which is used to issue an abnormal alarm and store the abnormal alarm log video when an abnormality is detected. For example, when a spark is detected, it is determined that a fire abnormality has occurred. At this time, a fire abnormality alarm is issued, and the video of the spark being shot is stored as a fire abnormality alarm log video. Therefore, when determining the type of fault, all abnormal alarm log videos stored in the abnormal alarm module within a preset time period can be obtained first, wherein the preset time period can specifically be the time period when the current equipment fault exists, that is, from the occurrence of the current equipment fault to the processing of the current equipment fault.

[0049] Taking into account that the same abnormal alarm may appear multiple times during an equipment failure, all abnormal alarm log videos stored in the abnormal alarm module within a preset time period can be sorted out to determine the type of abnormal alarm that occurs and the first alarm time of each abnormal alarm, and the order of each abnormal alarm is determined based on the first alarm time; then, based on the type of abnormal alarm that occurs and the order of each abnormal alarm, the fault type of the fault point is determined.

[0050] Specifically, when the fire alarm appears first and then the smoke alarm appears, the fault type of the fault point is determined to be a first type of fault; when the fire alarm appears first, then the smoke alarm appears, and then the arc alarm appears, the fault type of the fault point is determined to be a second type of fault; when only the smoke alarm appears, the fault type of the fault point is determined to be a third type of fault; when the smoke alarm appears first and then the fire alarm appears, the fault type of the fault point is determined to be a fourth type of fault; when the smoke alarm appears first, then the fire alarm appears, and then the arc alarm appears, the fault type of the fault point is determined to be a fifth type of fault; when only the arc alarm appears, the fault type of the fault point is determined to be a sixth type of fault; when the arc alarm appears first, then the fire alarm appears, and then the smoke alarm appears, the fault type of the fault point is determined to be a seventh type of fault.

[0051] After determining the fault type, determine the first abnormal alarm log video corresponding to each abnormal type in the fault type; select a preset number of frames of abnormal video images from each first abnormal alarm log video as the fault monitoring image of the fault point. For example, when it is determined that the first type of fault occurs at the second type of fault point, obtain the first fire abnormal alarm log video, smoke abnormal alarm log video and arc abnormal alarm log video in each fault point (faulty equipment and its upstream and downstream equipment) respectively, and select 3 frames of abnormal video images from each abnormal alarm log video. In this way, only 27 frames of images are needed to present a specific and accurate fault monitoring image to the control personnel, without the need for the control personnel to click to view all monitoring videos, thereby improving the efficiency of the control personnel in handling faults.

[0052] Figure 3 A schematic diagram of optional substation fault point monitoring is shown, wherein after receiving the D5000 fault signal transmitted by the faulty equipment, the fault point type is first determined, then, for each type of fault point, the fault type is determined based on the abnormal alarm log video in the abnormal alarm module of the video monitoring equipment, and finally the fault monitoring screen is selected according to the fault type.

[0053] After actual field use and verification, the monitoring system using the substation fault point monitoring method of the embodiment of the present application can accurately identify abnormal fire hazards such as arc, electric sparks, small amounts of smoke, etc. in the faulty equipment and issue abnormal alarms. At the same time, it can accurately cut specific fault monitoring images and transmit them to the information comprehensive processing platform to assist control personnel in making fault handling decisions.

[0054] In an embodiment of the present application, when a fault signal is received, the first device that sends the fault signal is first determined, and then the second device associated with the first device is determined based on the power grid topology in the substation, and the first device and the second device are both determined as fault points; for any fault point, the abnormal alarm log video in the video monitoring device corresponding to the fault point can be obtained, and the fault type of the fault point can be determined based on the abnormal alarm log video, wherein the fault type includes one or more associated abnormal types; then a preset number of frames of abnormal video images in the abnormal alarm log video corresponding to each abnormal type in the fault type can be obtained as the fault monitoring image of the fault point. Among them, based on the topological relationship between the equipment in the substation and the multi-level association relationship between the abnormal types in different fault types, the key frame fault images at the fault point can be quickly and efficiently located and displayed to the control personnel, thereby improving the efficiency of fault handling, and further solving the technical problem that the control personnel cannot quickly and accurately judge the status of the on-site equipment after a fault occurs in the substation, resulting in low fault handling efficiency.

[0055] Example 2

[0056] According to an embodiment of the present application, a substation fault point monitoring device for implementing the above-mentioned substation fault point monitoring method is also provided, such as Figure 4 As shown, the device at least includes a first determination module 40, a second determination module 42, a third determination module 44 and an acquisition module 46, wherein:

[0057] The first determination module 40 is configured to receive a fault signal and determine a first device that sends the fault signal.

[0058] The second determining module 42 is configured to determine a second device associated with the first device based on the power grid topology in the substation, and determine both the first device and the second device as fault points.

[0059] Considering that in a substation, when a certain device fails, the failure is likely to be caused by its upstream device, or will cause a short circuit failure in its downstream device. Therefore, when determining the fault point, in addition to determining the first device that sends a fault signal, the second device associated with the first device can also be determined. In some optional embodiments of the present application, the power grid topology in the substation can be obtained first, and then the upstream device and / or downstream device connected to the first device can be determined based on the power grid topology, and the upstream device and / or downstream device are used as the second device, and both the first device and the second device are determined as the fault point.

[0060] The third determination module 44 is used to obtain, for any fault point, an abnormal alarm log video in a video monitoring device corresponding to the fault point, and determine the fault type of the fault point based on the abnormal alarm log video, wherein the fault type includes one or more associated abnormal types.

[0061] The acquisition module 46 is used to acquire a preset number of frames of abnormal video images in the abnormal alarm log video corresponding to each abnormal type in the fault type as the fault monitoring images of the fault point.

[0062] In a substation, abnormal types usually include: fire, smoke and electric arc; correspondingly, abnormal alarm types include: fire alarm issued when fire is detected, smoke alarm issued when smoke is detected, and arc alarm issued when arc is detected. Considering that there is usually more than one abnormality when equipment fails, such as fire and electric arc are usually accompanied by smoke, in order to present a specific and accurate fault monitoring screen to the control personnel, the embodiment of the present application first divides the fault type according to the multi-level association relationship of different abnormal types:

[0063] The first type of fault: fire occurs first, then smoke; the second type of fault: fire occurs first, then smoke, and then an arc occurs; the third type of fault: only smoke occurs; the fourth type of fault: smoke occurs first, then fire; the fifth type of fault: smoke occurs first, then fire, and then an arc occurs; the sixth type of fault: only an arc occurs; the seventh type of fault: an arc occurs first, then fire, and then smoke; optionally, considering certain scenarios, such as high-voltage equipment usually prohibits people from approaching, an additional eighth type of fault can be divided: people approaching are detected.

[0064] Afterwards, the abnormal alarm log video can be obtained from the video monitoring device corresponding to the fault point, and the specific fault type of the fault point can be determined by analyzing the relationship between the abnormal types in the abnormal alarm log video.

[0065] In some optional embodiments of the present application, the video monitoring device corresponding to the fault point can be determined first, and the video monitoring device includes an abnormal alarm module. The abnormal alarm module is used to issue an abnormal alarm and store the abnormal alarm log video when an abnormality is detected. For example, when a spark is detected, it is determined that a fire abnormality has occurred. At this time, a fire abnormality alarm is issued, and the video of the spark being shot is stored as a fire abnormality alarm log video. Therefore, when determining the type of fault, all abnormal alarm log videos stored in the preset time period in the abnormal alarm module can be obtained first, wherein the preset time period can specifically be the time period when the current equipment fault exists, that is, from the occurrence of the current equipment fault to the processing of the current equipment fault.

[0066] Taking into account that the same abnormal alarm may appear multiple times during an equipment failure, all abnormal alarm log videos stored in the abnormal alarm module within a preset time period can be sorted out to determine the type of abnormal alarm that occurs and the first alarm time of each abnormal alarm, and the order of each abnormal alarm is determined based on the first alarm time; then, based on the type of abnormal alarm that occurs and the order of each abnormal alarm, the fault type of the fault point is determined.

[0067] Specifically, when the fire alarm appears first and then the smoke alarm appears, the fault type of the fault point is determined to be a first type of fault; when the fire alarm appears first, then the smoke alarm appears, and then the arc alarm appears, the fault type of the fault point is determined to be a second type of fault; when only the smoke alarm appears, the fault type of the fault point is determined to be a third type of fault; when the smoke alarm appears first and then the fire alarm appears, the fault type of the fault point is determined to be a fourth type of fault; when the smoke alarm appears first, then the fire alarm appears, and then the arc alarm appears, the fault type of the fault point is determined to be a fifth type of fault; when only the arc alarm appears, the fault type of the fault point is determined to be a sixth type of fault; when the arc alarm appears first, then the fire alarm appears, and then the smoke alarm appears, the fault type of the fault point is determined to be a seventh type of fault.

[0068] After determining the fault type, determine the first abnormal alarm log video corresponding to each abnormal type in the fault type; select a preset number of frames of abnormal video images from each first abnormal alarm log video as the fault monitoring image of the fault point. For example, when it is determined that the first type of fault occurs at the second type of fault point, obtain the first fire abnormal alarm log video, smoke abnormal alarm log video and arc abnormal alarm log video in each fault point (faulty equipment and its upstream and downstream equipment) respectively, and select 3 frames of abnormal video images from each abnormal alarm log video. In this way, only 27 frames of images are needed to present a specific and accurate fault monitoring image to the control personnel, without the need for the control personnel to click to view all monitoring videos, thereby improving the efficiency of the control personnel in handling faults.

[0069] It should be noted that each module in the substation fault point monitoring device in the embodiment of the present application corresponds one by one to each implementation step of the substation fault point monitoring method in Example 1. Since a detailed description has been given in Example 1, some details not reflected in this embodiment can be referred to Example 1, and will not be repeated here.

[0070] Example 3

[0071] According to an embodiment of the present application, a non-volatile storage medium is also provided, which includes a stored program, wherein when the program is running, the device where the non-volatile storage medium is located is controlled to execute the substation fault point monitoring method in Example 1.

[0072] According to an embodiment of the present application, a processor is also provided, which is used to run a program, wherein the substation fault point monitoring method in Example 1 is executed when the program is running.

[0073] Specifically, the following steps are executed when the program is running: receiving a fault signal and determining the first device that sends the fault signal; determining the second device associated with the first device based on the power grid topology in the substation, and determining both the first device and the second device as fault points; for any fault point, obtaining the abnormal alarm log video in the video monitoring device corresponding to the fault point, and determining the fault type of the fault point based on the abnormal alarm log video, wherein the fault type includes one or more associated abnormal types; obtaining a preset number of frames of abnormal video images in the abnormal alarm log video corresponding to each abnormal type in the fault type as the fault monitoring image of the fault point.

[0074] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0075] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0076] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0077] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed over multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0078] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0079] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art or all or part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of each embodiment method of the present application. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, disk or optical disk, etc. Various media that can store program codes.

[0080] The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A method for monitoring a fault point in a substation, characterized in that: include: receiving a fault signal and determining a first device that sends the fault signal; Determine a second device associated with the first device based on the power grid topology in the substation, and determine both the first device and the second device as fault points; For any of the fault points, obtain an abnormal alarm log video in a video monitoring device corresponding to the fault point, and determine the fault type of the fault point based on the abnormal alarm log video, wherein the fault type includes one or more associated abnormal types, and the abnormal type includes at least: fire, smoke and electric arc; Obtaining a preset number of frames of abnormal video images in the abnormal alarm log video corresponding to each of the abnormal types in the fault type as the fault monitoring images of the fault point; Among them, determining the fault type of the fault point based on the abnormal alarm log video includes: determining the relationship between the abnormal types according to the abnormal alarm log video, and determining the fault type of the fault point according to the relationship between the abnormal types, wherein the first type of fault is fire first and then smoke, the second type of fault is fire first, then smoke, and then arc, the third type of fault is only smoke, the fourth type of fault is smoke first and then fire, the fifth type of fault is smoke first, then fire, and then arc, the sixth type of fault is only arc, and the seventh type of fault is arc first, then fire, and then smoke.

2. The method according to claim 1, characterized in that Determining a second device associated with the first device based on a power grid topology in the substation includes: Acquire the power grid topology in the substation; An upstream device and / or a downstream device connected to the first device is determined based on the power grid topology, and the upstream device and / or the downstream device is used as the second device.

3. The method according to claim 1, characterized in that The abnormal alarm types include at least: a fire alarm issued when a fire is detected, a smoke alarm issued when smoke is detected, and an arc alarm issued when an arc is detected.

4. The method according to claim 3, characterized in that Obtaining the abnormal alarm log video in the video monitoring device corresponding to the fault point, including: Determine the video monitoring device corresponding to the fault point, wherein the video monitoring device includes an abnormal alarm module, and the abnormal alarm module is used to issue an abnormal alarm when an abnormality is detected and store an abnormal alarm log video; Obtain all the abnormal alarm log videos stored in the abnormal alarm module within a preset time period.

5. The method according to claim 4, characterized in that Determining the fault type of the fault point based on the abnormal alarm log video includes: Arrange all the abnormal alarm log videos stored in the abnormal alarm module within a preset time period, determine the type of abnormal alarm that occurs and the first alarm time of each abnormal alarm, and determine the order of each abnormal alarm based on the first alarm time; Based on the type of the abnormal alarm that occurs and the order of each abnormal alarm, the fault type of the fault point is determined.

6. The method according to claim 5, characterized in that Determining the fault type of the fault point based on the type of the abnormal alarm that occurs and the order of each abnormal alarm includes: When the fire alarm occurs first and the smoke alarm occurs later, determining that the fault type of the fault point is a first type of fault; When the fire alarm occurs first, the smoke alarm occurs later, and the arc alarm occurs later, determining that the fault type of the fault point is a second type fault; When only the smoke alarm occurs, determining that the fault type of the fault point is a third type fault; When the smoke alarm occurs first and the fire alarm occurs later, determining that the fault type of the fault point is a fourth type of fault; When the smoke alarm appears first, the fire alarm appears later, and the arc alarm appears later, determining that the fault type of the fault point is a fifth type fault; When only the arc alarm occurs, determining that the fault type of the fault point is a sixth type fault; When the arc alarm appears first, the fire alarm appears later, and the smoke alarm appears later, it is determined that the fault type of the fault point is a seventh type fault.

7. The method according to claim 5, characterized in that Obtaining a preset number of frames of abnormal video images in the abnormal alarm log video corresponding to each of the abnormal types in the fault type as the fault monitoring images of the fault point, including: Determine the first abnormal alarm log video corresponding to each abnormal type in the fault type; A preset number of frames of abnormal video images are selected from each of the first abnormal alarm log videos as fault monitoring images of the fault point.

8. A substation fault point monitoring device, characterized in that: include: A first determination module, configured to receive a fault signal and determine a first device that sends the fault signal; A second determination module, configured to determine a second device associated with the first device based on a power grid topology in the substation, and determine both the first device and the second device as fault points; A third determination module is used to obtain, for any of the fault points, an abnormal alarm log video in a video monitoring device corresponding to the fault point, and determine a fault type of the fault point based on the abnormal alarm log video, wherein the fault type includes one or more associated abnormal types, wherein the abnormal type includes at least: fire, smoke and electric arc; An acquisition module, used for acquiring a preset number of frames of abnormal video images in the abnormal alarm log video corresponding to each of the abnormal types in the fault type as the fault monitoring images of the fault point; Among them, determining the fault type of the fault point based on the abnormal alarm log video includes: determining the relationship between the abnormal types according to the abnormal alarm log video, and determining the fault type of the fault point according to the relationship between the abnormal types, wherein the first type of fault is fire first and then smoke, the second type of fault is fire first, then smoke, and then arc, the third type of fault is only smoke, the fourth type of fault is smoke first and then fire, the fifth type of fault is smoke first, then fire, and then arc, the sixth type of fault is only arc, and the seventh type of fault is arc first, then fire, and then smoke.

9. A non-volatile storage medium, characterized in that: The non-volatile storage medium includes a stored program, wherein when the program is running, the device where the non-volatile storage medium is located is controlled to execute the substation fault point monitoring method according to any one of claims 1 to 7.

10. A processor, characterized in that: The processor is used to run a program, wherein the program, when running, executes the substation fault point monitoring method according to any one of claims 1 to 7.

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