A method, device, storage medium and electronic equipment for cable fault alarm

Abstract

The present application relates to the technical field of power systems, and specifically provides a method, device, storage medium and electronic device for cable fault alarm, the method may include: when it is determined that the received level related to the cable is a high level, counting the number of the high level levels in at least two preset time periods; wherein the high level indicates that the level corresponding to the cable fault signal exceeds a preset value; when it is confirmed that the number of the levels in each preset time period of the at least two preset time periods is within a preset range, generating at least two cable fault alarms. Some embodiments of the present application can realize multiple alarms, improve the accuracy of cable fault alarms, and have high reliability.

Description

Technical Field

[0001] The present application relates to the technical field of power systems, and in particular to a method, device, storage medium and electronic device for cable fault alarm. Background Art

[0002] A fault indicator is a device used to indicate fault conditions in a cable system. It can detect circuit faults and indicate them quickly.

[0003] At present, fault indicators are used in unattended applications. Existing fault indicators can only make a single judgment and alarm for a fault. Moreover, traditional fault indicators inform patrol personnel whether there is a fault in the cable system by indicating whether the indicator light is on or off. When the fault indicator runs out of power, it cannot effectively alarm.

[0004] Therefore, how to provide a technical solution for a cable fault alarm method with higher reliability has become a technical problem that needs to be solved urgently. Summary of the invention

[0005] The purpose of some embodiments of the present application is to provide a method, device, storage medium and electronic device for cable fault alarm. Through the technical solutions of the embodiments of the present application, multiple fault alarms can be achieved, the effectiveness of the fault alarms can be guaranteed, and the accuracy and reliability of the cable fault alarms can be improved.

[0006] In a first aspect, some embodiments of the present application provide a method for cable fault alarm, comprising: when it is determined that a received level related to the cable is a high level, counting the number of levels of the high level within at least two preset time periods; wherein the high level indicates that the level corresponding to the cable fault signal exceeds a preset value; when it is confirmed that the number of levels in each preset time period within the at least two preset time periods is within a preset range, generating at least two cable fault alarms.

[0007] The single-chip microcomputer of some embodiments of the present application determines that the level of the received cable is a high level, counts the number of levels within a preset period, and then compares it with the preset range. When it is confirmed that it is within the preset range, it generates at least two cable fault alarms. Some embodiments of the present application solve the problem that the fault indicator in the prior art can only alarm once and cannot alarm after the battery fails due to low power, which can ensure the effectiveness of the fault alarm, realize multiple fault alarms, and improve the accuracy and reliability of the cable fault alarm.

[0008] In some embodiments, the cable-related electrical level is obtained by converting an optical signal by a photosensitive tube, and the optical signal is emitted when a sensor detects that a fault occurs in the cable.

[0009] Some embodiments of the present application can achieve accurate judgment on whether a cable is faulty by converting an optical signal of a cable fault into an electrical level.

[0010] In some embodiments, before determining that the received level related to the cable is a high level, the method further includes: receiving the level according to a preset period.

[0011] Some embodiments of the present application can achieve multiple detections by receiving electrical levels within a preset period, thereby solving the problem that the fault indicator cannot distinguish multiple fault conditions and cannot achieve multiple alarms, and effectively maintaining the stability of the cable system.

[0012] In some embodiments, when the number of alarms within the at least two preset time periods exceeds a number threshold, multiple alarms are displayed.

[0013] Some embodiments of the present application can realize multiple detections of the cable system by displaying multiple alarms when the number of alarms exceeds a threshold, which is suitable for complex fault conditions and improves alarm accuracy and reliability.

[0014] In a second aspect, some embodiments of the present application provide a device for cable fault alarm, comprising: a statistical module, for determining that when a received cable-related level is a high level, counting the number of high levels within at least two preset time periods; wherein the high level indicates that the level corresponding to the cable fault signal exceeds a preset value; an alarm module, for confirming that the number of levels in each preset time period within the at least two preset time periods is within a preset range, and generating at least two cable fault alarms.

[0015] In some embodiments, the cable-related electrical level is obtained by converting an optical signal by a photosensitive tube, and the optical signal is emitted when a sensor detects that a fault occurs in the cable.

[0016] In some embodiments, before the statistical module, the device further includes: a receiving module; the receiving module is used to: receive the level according to a preset period.

[0017] In some embodiments, the alarm module is used to display multiple alarms when the number of alarms within the at least two preset time periods exceeds a number threshold.

[0018] In a third aspect, some embodiments of the present application provide a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, can implement the method described in any embodiment of the first aspect.

[0019] In a fourth aspect, some embodiments of the present application provide an electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor can implement a method as described in any embodiment of the first aspect when executing the program.

[0020] In a fifth aspect, some embodiments of the present application provide a computer program product, wherein the computer program product comprises a computer program, wherein the computer program, when executed by a processor, can implement the method described in any embodiment of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of some embodiments of the present application, the drawings required for use in some embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A distribution network structure diagram provided for some embodiments of the present application;

[0023] Figure 2 A system diagram of a cable fault alarm provided for some embodiments of the present application;

[0024] Figure 3 One of the flow charts of the cable fault alarm method provided in some embodiments of the present application;

[0025] Figure 4 A second flowchart of a method for cable fault alarm provided in some embodiments of the present application;

[0026] Figure 5 A block diagram of a cable fault alarm device provided in some embodiments of the present application;

[0027] Figure 6 A schematic diagram of an electronic device is provided for some embodiments of the present application. DETAILED DESCRIPTION

[0028] The technical solutions in some embodiments of the present application will be described below in conjunction with the drawings in some embodiments of the present application.

[0029] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0030] The fault indicator detects fault conditions by monitoring the parameter changes of the cable system. Under normal working conditions, the parameter values ​​of the cable system are stable. When a fault occurs, such as overload, short circuit, etc., the parameter values ​​of current, voltage, etc. will change abnormally. The fault indicator determines whether a fault has occurred by sensing these abnormal changes and takes corresponding actions to indicate these faults.

[0031] Fault indicators are mainly used for cable diagnosis to achieve the purpose of alarm. However, as a device, fault indicators themselves also have problems with accuracy, failure rate, life and performance. Existing fault judgment is basically one-time, that is, it can only diagnose a fault once and alarm once. However, since the distribution network is not a straight line, but a tree or ring network (such as Figure 1 The tree structure shown in the figure) exists. In the case of a complex distribution network, if the reclosing or even reverse load occurs, the current fault indicator cannot distinguish complex and multiple tripping situations. And because the application places of fault indicators are all unattended, it is also an important test for the life and performance of the fault indicator. In the prior art, the battery is monitored by an indicator light, and the indicator light will flash when the battery is low, but this increases power consumption, and in the case of no one on duty, it is very likely that the fault indicator will be exhausted before the inspection personnel arrive. What's more troublesome is that the traditional way of fault judgment is to use the section between the bright and dark indicators as the judgment, but the failure of the fault indicator is more likely to lead to misjudgment.

[0032] It can be seen from the above related technologies that the fault indicator in the prior art can only make a one-time judgment and a single alarm when a complex cable system fails. Moreover, when the power of the fault indicator is low, its performance fails and the fault alarm cannot be realized, and the reliability is poor.

[0033] Some embodiments of the present application are mainly adapted to the distribution network automation of smart grids. After the automation is realized, when a fault occurs in the distribution network, the power company has realized the functions of automatic reclosing, rapid dispatching and load reversal. As a result, the original traditional fault indicator technology cannot identify which alarm was reported, how many times it was reported, whether there was any false operation during the period, etc. It is obvious that the existing fault indicators cannot adapt to the automation of distribution networks and cannot realize multiple alarms. The multiple alarms and anti-interference proposed in this application are new algorithms that adapt to the era of intelligence.

[0034] In view of this, some embodiments of the present application provide a method for cable fault alarm, which is executed by a single-chip microcomputer. By analyzing the level of the received cable, when it is determined that the level belongs to a high level, the number of high levels is counted within at least two preset time periods, and then according to the number of levels and the preset range, it is determined whether to generate a cable fault alarm. Some embodiments of the present application analyze the level of the cable through a single-chip microcomputer to determine whether there is a fault and whether to generate a fault alarm. This method can solve the problem that the fault indicator can only make a one-time judgment, cannot distinguish complex and multiple tripping situations, and cannot realize multiple alarms. The embodiments of the present application can improve the accurate monitoring of cable system faults, improve the accuracy and effectiveness of fault alarms, and have high reliability.

[0035] The following is combined with Figure 2 The overall composition structure of the cable fault alarm system provided by some embodiments of the present application is exemplified.

[0036] like Figure 2 As shown, some embodiments of the present application provide a system for cable fault alarm, which includes: a sensor 100, a photosensitive tube 200 and a single-chip microcomputer 300. Among them, the sensor 100 is used to monitor the cables in the cable system. When the cable fails, the sensor 100 can send a cable fault signal in the form of an optical signal. After that, the photosensitive tube 200 can convert the optical signal into an electrical signal and send the output level to the single-chip microcomputer 300. The single-chip microcomputer 300 can analyze the received level within a preset period of time to determine whether to generate a cable fault alarm. The single-chip microcomputer 300 can receive the level signal according to a preset period to achieve periodic monitoring of the cable system, record each alarm, achieve multiple alarms, and improve the accuracy and reliability of the alarm. In addition, the present application adds a Schmidt oscillation circuit to the cable fault alarm system to eliminate interference signals to improve the accuracy of the alarm.

[0037] The following is combined with Figure 3 The implementation process of the cable fault alarm performed by the single chip microcomputer 300 provided in some embodiments of the present application is exemplified.

[0038] Please see attached Figure 3 , Figure 3 A flow chart of a method for cable fault alarm is provided for some embodiments of the present application. The method for cable fault alarm may include:

[0039] S310, when it is determined that the received level related to the cable is a high level, counting the number of the high levels within at least two preset time periods; wherein the high level indicates that the level corresponding to the cable fault signal exceeds a preset value.

[0040] For example, in some embodiments of the present application, after the single-chip microcomputer 300 receives the level related to the cable sent by the photosensitive tube 200, it first determines whether the level is a high level. For example, the judgment standard of whether it is a high level is a preset value. When the level exceeds the preset value, it is considered to be a high level, otherwise it is a low level. The preset value can be set according to the actual situation of the cable system, and the embodiments of the present application are not specifically limited here. For example, the preset value can be 12V, 20V, etc.

[0041] After confirming that the level of the cable is high, the counter is turned on to start counting the number of high levels (that is, the number of levels); at the same time, the clock is turned on to start counting time, so as to count the number of high levels received within a specified period (as an example of a preset period). For example, the preset period can be 3s, 5s, etc. The preset period can be set according to the needs of the actual application scenario, and the embodiment of the present application is not specifically limited here.

[0042] In some embodiments of the present application, the cable-related electrical level is obtained by converting an optical signal by a photosensitive tube, and the optical signal is emitted when a sensor detects a cable fault.

[0043] S320, generating at least two cable fault alarms when confirming that the level quantity in each of the at least two preset time periods is within a preset range.

[0044] For example, in some embodiments of the present application, it is determined whether the number of high levels is within a preset range. If so, it is considered to be a valid alarm and a cable fault alarm is generated. By analyzing the number of high levels within multiple preset time periods, multiple fault alarms can be achieved. For example, the preset range can be 5-8, 5-10 or 10-15 levels, etc. The preset range can be set according to the needs of the actual application scenario, and the embodiments of the present application are not specifically limited here.

[0045] In some embodiments of the present application, before executing S310, the cable fault alarm method may further include: receiving the level according to a preset period.

[0046] For example, in some embodiments of the present application, the single-chip microcomputer 300 can set a dormancy period (as a specific example of a preset cycle). The single-chip microcomputer 300 can automatically wake up after the dormancy period, analyze and detect the received level, and confirm whether there is a valid alarm. For example, the single-chip microcomputer 300 automatically wakes up and works every 5s (that is, the preset period). In other words, the single-chip microcomputer 300 can perform abnormal detection on the level sent according to the preset period in the above manner, and can generate a fault alarm when a fault occurs. For example, after a cable fault alarm is generated (that is, an alarm is generated in the first cycle), the single-chip microcomputer 300 sleeps, and then detects the level again after a dormancy period ends. If the number of high levels is within the preset range, a secondary alarm is displayed (that is, an alarm is also generated in the second cycle, and the accumulation with the last time is a secondary alarm). After that, the single-chip microcomputer 300 enters the dormancy period again, and so on, to achieve continuous monitoring of the cable system, and the specific situation of the number of alarms can be displayed when a fault occurs.

[0047] In some embodiments of the present application, the cable fault alarm method may further include: when the number of alarms within the at least two preset time periods exceeds a number threshold, displaying multiple alarms.

[0048] For example, in some embodiments of the present application, during the process of the single-chip microcomputer 300 detecting the cable fault in the above manner, if it exceeds three times (as a specific example of the number threshold, for example, the occurrence of a fault, the reclosing test, and the switching test), multiple alarms are directly displayed. The inspection personnel can take corresponding measures in time according to the displayed alarm situation to maintain the stability of the cable system.

[0049] The following is combined with Figure 4 The specific process of cable fault alarm provided by some embodiments of the present application is exemplified.

[0050] Please see attached Figure 4 , Figure 4 A flow chart of a cable fault alarm method provided for some embodiments of the present application.

[0051] The above process is explained below as an example.

[0052] S401, the sensor detects the cable and sends a cable fault signal in the form of an optical signal when a fault occurs.

[0053] S402, the photosensitive tube converts the optical signal into an electrical signal and inputs the electrical level to the single chip microcomputer.

[0054] S403, the single chip microcomputer receives the electrical level.

[0055] S404, the single chip microcomputer determines whether the level is a high level, if so, executes S405, otherwise returns to S403.

[0056] S405, the microcontroller starts the counter and clock.

[0057] S406, the single chip microcomputer counts the number of high level levels within a preset time period.

[0058] S407, determining whether the level quantity is within a preset range, if so, executing S408, otherwise executing S403.

[0059] S408, the single chip microcomputer generates a cable fault alarm, i=i+1, and displays the i-th alarm.

[0060] The initial value of i is 0.

[0061] S409, determine whether i is greater than 2, if so, execute S411, otherwise execute S410.

[0062] S410, the microcontroller goes into sleep mode, wakes up automatically after sleep mode is completed, and returns to S403.

[0063] S411, the microcontroller displays multiple alarms.

[0064] It should be understood that after displaying multiple alarms, the microcontroller can also enter a sleep period in the same manner as before.

[0065] It should be noted that the specific implementation process of S401 to S411 can refer to the method embodiment provided above, and in order to avoid repetition, the detailed description is appropriately omitted here.

[0066] It can be seen from some of the embodiments of the present application described above that the present application analyzes the number of alarms and eliminates some interference with the Schmidt circuit, thereby making the interpretation of cable faults more accurate and more reliable; through the permanent self-check of the fault indicator, the operation and maintenance personnel can intuitively grasp the operating status of the equipment.

[0067] Please refer to Figure 5 , Figure 5 The following is a block diagram of the components of the cable fault alarm device provided by some embodiments of the present application. It should be understood that the cable fault alarm device corresponds to the above method embodiment and can execute the various steps involved in the above method embodiment. The specific functions of the cable fault alarm device can be found in the above description. To avoid repetition, the detailed description is appropriately omitted here.

[0068] Figure 5The cable fault alarm device includes at least one software function module that can be stored in a memory in the form of software or firmware or solidified in the cable fault alarm device, and the cable fault alarm device includes: a statistical module 510, which is used to determine that when the received cable-related level is a high level, count the number of high levels in at least two preset time periods; wherein the high level indicates that the level corresponding to the cable fault signal exceeds a preset value; an alarm module 520, which is used to confirm that the number of levels in each preset time period of the at least two preset time periods is within a preset range, and generate at least two cable fault alarms.

[0069] In some embodiments of the present application, the cable-related electrical level is obtained by converting an optical signal by a photosensitive tube, and the optical signal is emitted when a sensor detects that a fault occurs in the cable.

[0070] In some embodiments of the present application, before the statistical module 510, the cable fault alarm device further includes: a receiving module (not shown in the figure); the receiving module is used to: receive the level according to a preset period.

[0071] In some embodiments of the present application, the alarm module 520 is used to: display multiple alarms when the number of alarms within the at least two preset time periods exceeds a number threshold.

[0072] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the device described above can refer to the corresponding process in the aforementioned method, and will not be described in detail here.

[0073] Some embodiments of the present application further provide a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, can implement the operations of the method corresponding to any of the above methods provided in the above embodiments.

[0074] Some embodiments of the present application further provide a computer program product, which includes a computer program, wherein when the computer program is executed by a processor, it can implement the operations corresponding to any of the above methods provided in the above embodiments.

[0075] like Figure 6 As shown, some embodiments of the present application provide an electronic device 600, which includes: a memory 610, a processor 620, and a computer program stored in the memory 610 and executable on the processor 620, wherein the processor 620 can implement a method as described in any of the above embodiments when reading the program from the memory 610 through a bus 630 and executing the program.

[0076] Processor 620 can process digital signals and can include various computing structures, such as complex instruction set computer structure, reduced instruction set computer structure, or a structure that implements a combination of multiple instruction sets. In some examples, processor 620 can be a microprocessor.

[0077] The memory 610 may be used to store instructions executed by the processor 620 or data related to the execution of instructions. These instructions and / or data may include codes for implementing some or all functions of one or more modules described in the embodiments of the present application. The processor 620 of the disclosed embodiment may be used to execute instructions in the memory 610 to implement the method shown above. The memory 610 includes a dynamic random access memory, a static random access memory, a flash memory, an optical memory, or other memory known to those skilled in the art.

[0078] The above description is only an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0079] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0080] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. A method for cable fault alarm, characterized in that: The method is applicable to the field of distribution network automation of smart grids. In the method, a Schmidt oscillation circuit is added to the cable fault system to eliminate interference signals. The method includes: When it is determined that the received level related to the cable is a high level, the number of the high levels is counted within at least two preset time periods; wherein the high level indicates that the level corresponding to the cable fault signal exceeds a preset value; When it is confirmed that the level quantity in each preset time period in the at least two preset time periods is within a preset range, at least two cable fault alarms are generated; the number of cable fault alarms is obtained by accumulation; the fault causes of the cable fault alarms are not necessarily the same.

2. The method according to claim 1, characterized in that The cable-related electrical level is obtained by converting an optical signal through a photosensitive tube, and the optical signal is emitted when a sensor detects that a fault has occurred in the cable.

3. The method according to claim 1 or 2, characterized in that Before determining that the received level related to the cable is a high level, the method further includes: The level is received according to a preset period.

4. The method according to claim 1 or 2, characterized in that: The method further includes: displaying multiple alarms when the number of alarms within the at least two preset time periods exceeds a number threshold.

5. A cable fault alarm device, characterized in that: The device is used to execute the method according to claim 1, and the device is applicable to the field of distribution network automation of smart grids. The device eliminates interference signals by adding a Schmidt oscillation circuit in the cable fault system. The device includes: A statistical module, for determining that the received level related to the cable is a high level, and counting the number of the high level in at least two preset time periods; wherein the high level indicates that the level corresponding to the cable fault signal exceeds a preset value; The alarm module is used to confirm that the level quantity in each preset time period of the at least two preset time periods is within a preset range, and generate at least two cable fault alarms; the number of cable fault alarms is obtained by accumulation; the fault causes of the cable fault alarms are not necessarily the same.

6. The device according to claim 5, characterized in that The cable-related electrical level is obtained by converting an optical signal through a photosensitive tube, and the optical signal is emitted when a sensor detects that a fault has occurred in the cable.

7. The device according to claim 5 or 6, characterized in that Before the statistical module, the device further includes: a receiving module; the receiving module is used to: The level is received according to a preset period.

8. The device according to claim 7, characterized in that The alarm module is used for: When the number of alarms within the at least two preset time periods exceeds a number threshold, multiple alarms are displayed.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, wherein the computer program executes the method according to any one of claims 1 to 4 when executed by a processor.

10. An electronic device, characterized in that: The method comprises a memory, a processor, and a computer program stored in the memory and running on the processor, wherein the computer program executes the method according to any one of claims 1 to 4 when being run by the processor.

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