A medium-voltage distribution line fault detection method, system, terminal and storage medium

Abstract

The application relates to the technical field of power grid lines, in particular to a medium-voltage distribution line fault detection method and system, a terminal and a storage medium, the method comprising: judging whether a fault alarm associated with a line fault is received, if the fault alarm is received, obtaining a fault area and a fault type corresponding to the fault alarm based on the fault alarm, judging whether the fault alarm is a specified alarm based on the fault area and the fault type, and detecting the line fault based on the specified alarm if the fault alarm is the specified alarm; if the fault alarm is not the specified alarm, judging whether a sudden factor associated with the line fault exists in the fault area within a preset time range, obtaining the sudden factor if the sudden factor associated with the line fault exists, and detecting the line fault based on the sudden factor. The application helps to improve the line fault detection efficiency.

Description

Technical Field

[0001] This application relates to the field of power grid line technology, and in particular to a method, system, terminal and storage medium for detecting faults in medium-voltage power distribution lines. Background Technology

[0002] In the power grid sector, failures in medium-voltage distribution lines and equipment directly affect the normal production and daily electricity consumption of a large number of users. The failure rate of medium-voltage distribution lines has become a key indicator affecting customers' electricity experience, power supply reliability, and power supply efficiency.

[0003] In related technologies, when a medium-voltage power distribution line fails, the fault is usually diagnosed manually or based on the experience of maintenance personnel by randomly inspecting the power grid and circuit equipment in the fault area until the cause of the power distribution line fault is found.

[0004] However, the inventors believe that the methods for troubleshooting power distribution line faults in related technologies are time-consuming and labor-intensive, making it difficult to quickly and accurately find the cause of the line fault, which easily leads to low efficiency in line fault detection. Summary of the Invention

[0005] To help improve the efficiency of line fault detection, this application provides a method, system, terminal and storage medium for detecting faults in medium-voltage power distribution lines.

[0006] Firstly, this application provides a method for detecting faults in medium-voltage power distribution lines, which adopts the following technical solution: A method for detecting faults in medium-voltage power distribution lines, comprising: Determine whether a fault alarm associated with a line fault has been received; If the fault alarm is received, the fault area and fault type corresponding to the fault alarm are obtained based on the fault alarm; Based on the fault area and the fault type, determine whether the fault alarm is a specified alarm; If the fault alarm is the specified alarm, then the line fault is detected based on the specified alarm; If the fault alarm is not the designated alarm, then determine whether there are any sudden factors related to the line fault in the fault area within the preset time range; If there is a sudden factor associated with the line fault, then obtain the sudden factor; Based on the aforementioned sudden factors, the line fault is detected.

[0007] By adopting the above technical solution, when a fault alarm is received, in order to narrow the detection range, the fault area and fault type corresponding to the fault alarm are first obtained, and then it is determined whether the fault alarm is a designated alarm. If the fault alarm is a designated alarm, it means that the specific cause of the line fault and / or the specific power distribution equipment that caused the line fault is known. Therefore, the line equipment can be directly detected for fault based on the designated alarm. If the fault alarm is not a specified alarm, it indicates that the specific cause of the line fault and / or the specific power distribution equipment causing the line fault is still unclear. Therefore, it is necessary to determine whether there is a sudden factor related to the line fault in the fault area within the preset time range. If there is, it indicates that the line fault is related to the sudden factor. Therefore, the line fault can be repaired based on the sudden factor. Selecting the appropriate detection method based on different fault alarm types and specific circumstances helps to quickly and accurately detect the specific cause of the line fault and / or the specific power distribution equipment causing the line fault, which helps to save detection time and thus improve detection efficiency.

[0008] Optionally, the specific steps for determining whether the fault alarm is a specified alarm based on the fault area and the fault type include: Determine whether the faulty area meets the preset area requirements; If the fault area meets the preset area requirements, then determine whether the fault type meets the preset type requirements; If the fault type meets the preset type requirement, then the fault alarm is determined to be the specified alarm; If the fault area does not meet the preset area requirements and / or if the fault type does not meet the preset type requirements, then the fault alarm is determined to be not the specified alarm.

[0009] By adopting the above technical solution, it is determined whether the fault area meets the preset area requirements. If the fault area meets the preset area requirements, it is further determined whether the fault type meets the preset type requirements. Only when the fault area meets the preset area requirements and the fault type meets the preset type requirements is the fault alarm determined to be a designated alarm. If the fault area does not meet the preset area requirements and / or the fault type does not meet the preset type requirements, the fault alarm is determined to be a non-designated alarm. By determining whether the fault area and fault type meet the corresponding requirements, it is possible to determine whether the fault alarm is a designated alarm. This helps to select a line fault detection method that matches the judgment result, thereby helping to reduce detection time and improve detection efficiency.

[0010] Optionally, if there is a sudden factor associated with the line fault, the specific steps for obtaining the sudden factor include: If there are any sudden factors associated with the line fault, then obtain the historical safety information of the fault area; Based on the historical safety information, determine whether a safety incident related to the line fault has occurred in the fault area; If a safety incident related to the line fault occurs within the fault area, the safety incident will be considered as the sudden incident factor.

[0011] By adopting the above technical solution, if there is a sudden factor associated with the line fault, it indicates that the line fault is caused by or related to the sudden factor. First, obtain the historical safety information of the fault area, and then determine whether a safety accident related to the line fault has occurred in the fault area based on the historical safety information. If it has occurred, it indicates that a safety accident has occurred in the fault area, thereby causing the line fault. Therefore, the safety accident is directly regarded as the sudden factor. This sudden factor helps to quickly and accurately detect the specific location of the line fault and the specific power distribution equipment, thereby helping to improve detection efficiency.

[0012] Optionally, after determining whether a safety incident related to the line fault has occurred within the fault area based on the historical safety information, the method further includes: If no safety incident related to the line fault occurs within the fault area, then the target information of the fault area is obtained; Based on the target information, determine whether a target disaster has occurred in the fault area; If the target disaster occurs within the fault area, the target disaster will be considered as the sudden factor.

[0013] By adopting the above technical solution, if no safety accident related to the line fault occurs in the fault area, the target information of the fault area is obtained, and the target information is used to determine whether a target disaster has occurred in the fault area. If it has occurred, it indicates that a target disaster has occurred in the fault area, thereby causing a line fault. Therefore, the target disaster is directly used as a sudden factor. This sudden factor helps to quickly and accurately detect the specific location of the line fault and the specific power distribution equipment, thereby helping to improve detection efficiency.

[0014] Optionally, after determining whether there is a sudden factor associated with the line fault within the fault area within a preset time range if the fault alarm is not the designated alarm, the method further includes: If there are no sudden factors associated with the line fault, then obtain historical fault records; Based on the historical fault records, the number of faults caused by different power distribution equipment to the line is obtained; Based on a preset sorting rule, the number of faults is sorted and a fault sorting list is generated; Based on the fault ranking list and preset detection rules, the line faults are detected.

[0015] By adopting the above technical solution, if there is no sudden factor associated with the line fault, it indicates that no sudden factor has occurred in the fault area. Therefore, the line fault is not related to the sudden factor and the line fault cannot be repaired based on the sudden factor. Therefore, historical fault records are further obtained, and the number of faults caused by different power distribution equipment is obtained based on the historical fault records. The number of faults is sorted to generate a fault sorting list. According to the preset detection rules, the power distribution equipment with more faults is prioritized for fault detection. The more faults there are, the greater the probability that the power distribution equipment corresponding to those faults will cause the current line fault. Therefore, detecting line faults based on the fault ranking list helps to quickly and accurately detect the specific location of the line fault and the specific power distribution equipment, thereby improving detection efficiency.

[0016] Optionally, the specific steps for detecting the line fault based on the fault ranking list and preset detection rules include: Based on the fault ranking list, determine whether there are any equal fault counts; If there are equal numbers of the aforementioned faults, then the power distribution equipment with the same number of faults is marked as the target equipment; Obtain the device information of the target device; Based on the device information, the current usage time and rated usage time of the target device are obtained; Determine whether the current usage time exceeds the rated usage time; If the current usage time exceeds the rated usage time, the power distribution equipment will be marked as expired equipment. The line faults are detected based on the fault ranking list, the preset detection rules, and the expired equipment.

[0017] By adopting the above technical solution, the system first determines whether there are equal numbers of faults in the fault ranking list. If so, it indicates that the order of power distribution equipment cannot be selected based on the number of faults. Therefore, the system obtains the current usage time and rated usage time of the target equipment and determines whether the current usage time exceeds the rated usage time. If it does, the power distribution equipment is marked as expired equipment. Finally, according to the preset detection rules, the system prioritizes the power distribution equipment with more faults in the fault ranking list for fault detection. When the number of faults is equal, the system prioritizes the detection of expired equipment. Expired equipment is more likely to cause line faults than normal equipment. Therefore, prioritizing the detection of expired equipment helps to quickly and accurately detect the specific location of the line fault and the specific power distribution equipment, thereby improving detection efficiency.

[0018] Optionally, after determining that the current usage time exceeds the rated usage time, the following steps are included: If the current usage time does not exceed the rated usage time, then obtain the power distribution line distribution map and population density of the fault area; Based on the power distribution line distribution map, the population density, and the preset detection rules, the line faults are detected.

[0019] By adopting the above technical solution, if the current usage time does not exceed the rated usage time, it indicates that the power distribution equipment corresponding to the same number of faults has not exceeded the rated usage time. Therefore, further obtaining the power distribution line distribution map and population density of the fault area, and prioritizing the detection of power distribution equipment and power distribution lines with high population density based on the power distribution line distribution map, helps to reduce the possibility of safety accidents caused by line faults.

[0020] Secondly, this application also discloses a medium-voltage power distribution line fault detection system, which adopts the following technical solution: A medium-voltage power distribution line fault detection system, comprising: The first judgment module is used to determine whether a fault alarm associated with a line fault has been received; If the first acquisition module receives the fault alarm, the first acquisition module is used to acquire the fault area and fault type corresponding to the fault alarm based on the fault alarm; The second judgment module is used to determine whether the fault alarm is a specified alarm based on the fault area and the fault type; The first detection module is used to detect the line fault based on the specified alarm if the fault alarm is the specified alarm. The third judgment module, if the fault alarm is not the designated alarm, is used to determine whether there are any sudden factors related to the line fault in the fault area within a preset time range; If there is a sudden factor associated with the line fault, the second acquisition module is used to acquire the sudden factor. The second detection module is used to detect the line fault based on the sudden factors.

[0021] By adopting the above technical solution, the first judgment module is used to determine whether a fault alarm associated with a line fault has been received; If the first acquisition module receives the fault alarm, the first acquisition module is used to acquire the fault area and fault type corresponding to the fault alarm based on the fault alarm; The second judgment module is used to determine whether the fault alarm is a specified alarm based on the fault area and the fault type; The first detection module is used to detect the line fault based on the specified alarm if the fault alarm is the specified alarm. The third judgment module, if the fault alarm is not the designated alarm, is used to determine whether there are any sudden factors related to the line fault in the fault area within a preset time range; If there is a sudden factor associated with the line fault, the second acquisition module is used to acquire the sudden factor. The second detection module is used to detect the line fault based on the sudden factors.

[0022] Thirdly, the computer device provided in this application adopts the following technical solution: A smart terminal includes a memory and a processor, wherein the memory stores a computer program that can run on the processor, and when the processor loads the computer program, it executes the method of the first aspect.

[0023] Fourthly, the computer-readable storage medium provided in this application adopts the following technical solution: A computer-readable storage medium storing a computer program that, when loaded by a processor, executes the method of the first aspect.

[0024] In summary, this application includes the following beneficial technical effects: Selecting the appropriate detection method based on different fault alarm types and specific circumstances helps to quickly and accurately detect the specific cause of the line fault and / or the specific power distribution equipment causing the line fault, which helps to save detection time and thus improve detection efficiency. Attached Figure Description

[0025] Figure 1 This is a main flowchart of a medium-voltage power distribution line fault detection method according to an embodiment of this application; Figure 2 This is a flowchart of steps S201 to S204; Figure 3 This is a flowchart of steps S301 to S303; Figure 4 This is a flowchart of steps S401 to S403; Figure 5 This is a flowchart of steps S501 to S504; Figure 6 This is a flowchart of steps S601 to S607; Figure 7 This is a flowchart of steps S701 to S702; Figure 8 This is a block diagram of a medium-voltage power distribution line fault detection system according to an embodiment of this application.

[0026] Explanation of reference numerals in the attached figures: 1. First judgment module; 2. First acquisition module; 3. Second judgment module; 4. First detection module; 5. Third judgment module; 6. Second acquisition module; 7. Second detection module. Detailed Implementation

[0027] In the first aspect, this application discloses a method for detecting faults in medium-voltage power distribution lines.

[0028] Reference Figure 1 A method for detecting faults in medium-voltage power distribution lines, comprising steps S101 to S107: Step S101: Determine whether a fault alarm associated with a line fault has been received.

[0029] Specifically, in this embodiment, when a fault occurs in the power distribution line, the medium-voltage power distribution line fault detection system will issue a fault alarm associated with the line fault. The fault alarm is the alarm issued by the system after a line fault occurs.

[0030] If no fault alarm is received, no action is taken.

[0031] Step S102: If a fault alarm is received, obtain the fault area and fault type corresponding to the fault alarm based on the fault alarm.

[0032] Specifically, in this embodiment, the fault alarm includes the fault area where the fault occurred and the fault type. Therefore, the fault area and fault type can be directly obtained from the fault alarm. The fault area is the approximate area where the line fault occurs, and the fault type is the type of line fault. In this embodiment, the fault type may include grounding, instantaneous fault, and overcurrent, etc.

[0033] For example, when a power distribution line in a county experiences a line fault, the system issues a fault alarm. The alarm includes information such as which township in the county the fault occurred in, and whether the fault was caused by a trip or equipment damage.

[0034] Step S103: Based on the fault area and fault type, determine whether the fault alarm is a specified alarm.

[0035] Specifically, in this embodiment, a designated alarm is a fault alarm that clearly indicates the specific location and cause of the line fault. For example, if a fault alarm clearly indicates the specific location, specific power distribution equipment, and specific cause of the line fault, then the fault alarm is called a designated alarm.

[0036] Step S104: If the fault alarm is a specified alarm, then detect the line fault based on the specified alarm.

[0037] Specifically, in this embodiment, if the fault alarm is a designated alarm, the line fault can be detected quickly and accurately based on the content of the designated alarm, thereby helping to improve detection efficiency.

[0038] Step S105: If the fault alarm is not a specified alarm, determine whether there are any sudden factors related to the line fault in the fault area within the preset time range.

[0039] Specifically, in this embodiment, sudden factors refer to sudden factors that directly cause or indirectly trigger line faults, including natural factors and human factors, etc.; the preset time range can be within 1 hour or other time ranges.

[0040] In this embodiment, the medium-voltage power distribution line fault detection system is connected to network data. Therefore, it can use the Internet to know whether there are any sudden factors related to the line fault in the fault area within a preset time range. Alternatively, by setting up multiple camera devices in the power distribution line area and identifying the video images captured by the camera devices, it can be determined whether there are any sudden factors related to the line fault in the fault area within a preset time range.

[0041] Step S106: If there is a sudden factor associated with the line fault, then obtain the sudden factor.

[0042] Step S107: Detect line faults based on sudden factors.

[0043] Specifically, in this embodiment, based on the sudden factor, we go directly to the location where the sudden factor occurred and repair the line fault according to the scope of the impact caused by the sudden factor.

[0044] The medium-voltage power distribution line fault detection method provided in this embodiment, when receiving a fault alarm, first obtains the fault area and fault type corresponding to the fault alarm in order to narrow the detection range, and then determines whether the fault alarm is a designated alarm. If the fault alarm is a designated alarm, it means that the specific cause of the line fault and / or the specific power distribution equipment that caused the line fault is known. Therefore, the fault detection of the line equipment can be performed directly according to the designated alarm.

[0045] If the fault alarm is not a designated alarm, it indicates that the specific cause of the line fault and / or the specific power distribution equipment causing the line fault is still unclear. Therefore, it is necessary to determine whether there is a sudden factor related to the line fault in the fault area within the preset time range. If there is, it indicates that the line fault is related to the sudden factor. Therefore, the line fault can be repaired based on the sudden factor.

[0046] Selecting the appropriate detection method based on different fault alarm types and specific circumstances helps to quickly and accurately detect the specific cause of the line fault and / or the specific power distribution equipment causing the line fault, which helps to save detection time and thus improve detection efficiency.

[0047] Reference Figure 2 In one embodiment of this example, step S103, which determines whether a fault alarm is a specified alarm based on the fault area and fault type, includes steps S201 to S204: Step S201: Determine whether the fault area meets the preset area requirements.

[0048] Specifically, in this embodiment, the preset area requirement is a requirement that is pre-set and stored in the medium-voltage power distribution line fault detection system to determine whether a fault alarm can be used as a designated alarm area requirement. In this embodiment, the preset area requirement can be that the fault area is specific to a cabinet in a certain power distribution room or that the fault area is specific to the mileage range of the power distribution line and the mileage range does not exceed 100 meters. In this embodiment, the power distribution mileage is set along the power distribution line starting from the main power distribution station. For example, the power distribution mileage of power distribution room A is K5+125, that is, power distribution room A is located 5125 meters away from the main power distribution station along the power distribution line.

[0049] Step S202: If the fault area meets the preset area requirements, then determine whether the fault type meets the preset type requirements.

[0050] Specifically, in this embodiment, the preset type requirement is pre-set and stored in the medium-voltage power distribution line fault detection system to determine whether the fault alarm can be used as the type requirement of the specified alarm. In this embodiment, the preset type requirement can be specific to a certain power distribution equipment such as instantaneous tripping or overcurrent.

[0051] Step S203: If the fault type meets the preset type requirements, the fault alarm is determined to be a specified alarm.

[0052] Specifically, in this embodiment, a fault alarm is determined to be a designated alarm only if the fault area meets the preset area requirements and the fault type meets the preset type requirements.

[0053] Step S204: If the fault area does not meet the preset area requirements and / or if the fault type does not meet the preset type requirements, then the fault alarm is determined to be a non-specified alarm.

[0054] Specifically, in this embodiment, if any one or two of the fault areas or fault types do not meet the corresponding requirements, the fault alarm is determined to be a non-designated alarm.

[0055] The medium-voltage power distribution line fault detection method provided in this embodiment determines whether the fault area meets the preset area requirements. If the fault area meets the preset area requirements, it further determines whether the fault type meets the preset type requirements. Only when the fault area meets the preset area requirements and the fault type meets the preset type requirements is the fault alarm determined to be a designated alarm. If the fault area does not meet the preset area requirements and / or the fault type does not meet the preset type requirements, the fault alarm is determined to be a non-designated alarm.

[0056] By determining whether the fault area and fault type meet the corresponding requirements, it is possible to determine whether the fault alarm is a designated alarm. This helps to select a line fault detection method that matches the judgment result, thereby reducing detection time and improving detection efficiency.

[0057] Reference Figure 3 In one embodiment of this example, if there is a sudden factor associated with a line fault in step S106, the specific steps for obtaining the sudden factor include steps S301 to S303: Step S301: If there is a sudden factor associated with the line fault, obtain the historical safety information of the fault area.

[0058] Specifically, in this embodiment, historical safety information refers to information on safety accidents caused by human error within a preset time range, such as a car or airplane hitting a power distribution line, or a kite string getting tangled in a power distribution box while flying a kite, causing a power distribution line fault.

[0059] Step S302: Based on historical safety information, determine whether a safety incident related to the line fault has occurred within the fault area.

[0060] Specifically, in this embodiment, historical security information corresponds to security incidents, that is, each piece of historical security information corresponds to one security incident.

[0061] Step S303: If a safety incident related to the line fault occurs in the fault area, the safety incident shall be treated as an emergency factor.

[0062] The medium-voltage power distribution line fault detection method provided in this embodiment indicates that if there is a sudden factor associated with the line fault, it means that the line fault is caused by or related to the sudden factor. First, historical safety information of the fault area is obtained, and the historical safety information is used to determine whether a safety accident associated with the line fault has occurred in the fault area. If it has occurred, it means that a safety accident has occurred in the fault area, thereby causing the line fault. Therefore, the safety accident is directly used as the sudden factor. The sudden factor helps to quickly and accurately detect the specific location of the line fault and the specific power distribution equipment, thereby helping to improve detection efficiency.

[0063] Reference Figure 4 In one embodiment of this example, step S302, which determines whether a safety incident related to a line fault has occurred within the fault area based on historical safety information, includes steps S401 to S403: Step S401: If no safety incident related to the line fault has occurred in the fault area, then obtain the target information of the fault area.

[0064] Specifically, in this embodiment, the target information is the information of the target disaster, which includes natural disasters such as lightning, floods, earthquakes, and tsunamis.

[0065] Step S402: Based on the target information, determine whether a target disaster has occurred in the fault area.

[0066] Specifically, in this embodiment, it can be determined whether a target disaster has occurred based on the target information.

[0067] Step S403: If a target disaster occurs within the fault area, the target disaster will be treated as an emergency factor.

[0068] Specifically, in this embodiment, if no target disaster occurs within the fault area, the current step ends.

[0069] The medium-voltage power distribution line fault detection method provided in this embodiment obtains target information of the fault area if no safety accident related to the line fault occurs in the fault area, and determines whether a target disaster has occurred in the fault area based on the target information. If it has occurred, it indicates that a target disaster has occurred in the fault area, thereby causing a line fault. Therefore, the target disaster is directly used as a sudden factor. This sudden factor helps to quickly and accurately detect the specific location of the line fault and the specific power distribution equipment, thereby helping to improve detection efficiency.

[0070] Reference Figure 5 In one embodiment of this example, if there is a sudden factor associated with a line fault in step S106, then after obtaining the sudden factor, steps S501 to S504 are further included: Step S501: If there are no sudden factors associated with the line fault, then obtain the historical fault records.

[0071] Specifically, in this embodiment, the historical fault record is all records of line faults that occurred on the power distribution line within a preset time range. In this embodiment, the preset time range can be one year or other time ranges, or it can be the time range from the time the power distribution line was put into use to the present.

[0072] In this embodiment, each line fault is stored in a designated database in the medium-voltage power distribution line fault detection system, so historical fault records can be directly retrieved from the database.

[0073] Step S502: Based on historical fault records, obtain the number of line faults caused by different power distribution equipment.

[0074] Specifically, in this embodiment, the number of faults refers to the number of times different power distribution equipment causes line faults. For example, if transformer A causes line faults 10 times, then the number of faults corresponding to transformer A is 10.

[0075] Step S503: Based on the preset sorting rules, sort the number of failures and generate a failure sorting list.

[0076] Specifically, in this embodiment, the fault sorting list is a sorting list generated after sorting the number of faults according to a preset sorting rule. The preset sorting rule is a sorting rule set in advance. In this embodiment, the faults are arranged in descending order of the number of faults.

[0077] Step S504: Detect line faults based on the fault sorting list and preset detection rules.

[0078] Specifically, in this embodiment, according to the preset detection rules, the power distribution equipment with the most faults in the fault ranking list is prioritized for fault detection. The preset detection rules are that the power distribution equipment corresponding to the number of faults in the fault ranking list is detected in turn.

[0079] The medium-voltage power distribution line fault detection method provided in this embodiment indicates that no sudden factors have occurred in the fault area if there are no sudden factors associated with the line fault. Therefore, the line fault is not related to the sudden factors and the line fault cannot be repaired based on the sudden factors. Therefore, historical fault records are further obtained, and the number of faults caused by different power distribution equipment is obtained based on the historical fault records. The number of faults is sorted to generate a fault sorting list. According to the preset detection rules, the power distribution equipment with a higher number of faults is prioritized for fault detection.

[0080] The more faults there are, the greater the probability that the power distribution equipment corresponding to those faults will cause the current line fault. Therefore, detecting line faults based on the fault ranking list helps to quickly and accurately detect the specific location of the line fault and the specific power distribution equipment, thereby improving detection efficiency.

[0081] Reference Figure 6 In one embodiment of this example, step S504, which detects line faults based on a fault ranking list and preset detection rules, includes steps S601 to S607: Step S601: Based on the fault sorting list, determine whether there are equal fault counts.

[0082] Step S602: If there are equal numbers of faults, mark the power distribution equipment with equal numbers of faults as the target equipment.

[0083] Specifically, in this embodiment, the target device is the power distribution equipment with the same number of failures.

[0084] If there are no equal numbers of faults, the fault detection will be performed on the power distribution equipment with the most faults according to the preset detection rules.

[0085] Step S603: Obtain device information of the target device.

[0086] Specifically, in this embodiment, the equipment information includes the production time and rated usage time of the power distribution equipment.

[0087] Step S604: Based on the device information, obtain the current usage time and rated usage time of the target device.

[0088] Specifically, in this embodiment, the current usage duration is the length of time from the production time of the power distribution equipment to the current time. For example, if the production time of transformer A is January 1, 2015, and the current time is January 1, 2023, then the current usage duration is 8 years; the rated usage duration is the maximum safe usage duration allowed for the power distribution equipment.

[0089] Step S605: Determine whether the current usage time exceeds the rated usage time.

[0090] Step S606: If the current usage time exceeds the rated usage time, mark the power distribution equipment as expired equipment.

[0091] Specifically, in this embodiment, expired equipment refers to power distribution equipment whose current usage time exceeds the rated usage time.

[0092] If the current usage time has not exceeded the rated usage time, no operation will be performed.

[0093] Step S607: Detect line faults based on the fault sorting list, preset detection rules, and expired equipment.

[0094] The medium-voltage power distribution line fault detection method provided in this embodiment first determines whether there are equal fault counts in the fault ranking list. If so, it indicates that the order of power distribution equipment cannot be selected based on the fault count. Therefore, the current usage time and rated usage time of the target equipment are obtained, and it is determined whether the current usage time exceeds the rated usage time. If it does, the power distribution equipment is marked as expired equipment. Finally, according to preset detection rules, fault detection is performed on power distribution equipment with more fault counts in the fault ranking list first. When the fault counts are equal, fault detection is performed on expired equipment first. Expired equipment is more likely to cause line faults than normal equipment. Therefore, prioritizing fault detection on expired equipment helps to quickly and accurately detect the specific location of the line fault and the specific power distribution equipment, thereby improving detection efficiency.

[0095] Reference Figure 7 In one embodiment of this example, after determining whether the current usage time exceeds the rated usage time in step S605, steps S701 to S702 are further included: Step S701: If the current usage time has not exceeded the rated usage time, obtain the power distribution line distribution map and population density of the fault area.

[0096] Specifically, in this embodiment, the power distribution line distribution map is the distribution layout map of the power distribution lines, and the population concentration level is the population density. In this embodiment, the power distribution line distribution map of the entire area is stored in the medium-voltage power distribution line fault detection system in advance, so the power distribution line distribution map of the fault area can be directly retrieved from the medium-voltage power distribution line fault detection system. When constructing power distribution lines, the population concentration situation near the lines is investigated in advance, and the investigation results are stored in the medium-voltage power distribution line fault detection system, so the population concentration level can be retrieved from the medium-voltage power distribution line fault detection system.

[0097] Step S702: Detect line faults based on the power distribution line distribution map, population density, and preset detection rules.

[0098] The medium-voltage power distribution line fault detection method provided in this embodiment indicates that if the current usage time has not exceeded the rated usage time, it means that the power distribution equipment corresponding to the same number of faults has not exceeded the rated usage time. Therefore, it is necessary to further obtain the power distribution line distribution map and population density of the fault area. Based on the power distribution line distribution map, priority should be given to detecting power distribution equipment and power distribution lines with high population density, which helps to reduce the possibility of safety accidents caused by line faults.

[0099] Secondly, this application also discloses a medium-voltage power distribution line fault detection system.

[0100] Reference Figure 8 A medium-voltage power distribution line fault detection system, comprising: The first judgment module 1 is used to determine whether a fault alarm associated with a line fault has been received; If a fault alarm is received, the first acquisition module 2 is used to acquire the fault area and fault type corresponding to the fault alarm based on the fault alarm. The second judgment module 3 is used to determine whether the fault alarm is a specified alarm based on the fault area and fault type; If the fault alarm is a specified alarm, the first detection module 4 is used to detect line faults based on the specified alarm. The third judgment module 5 is used to determine whether there are any sudden factors related to the line fault within the fault area within the preset time range if the fault alarm is not a specified alarm. If there is a sudden factor associated with a line fault, the second acquisition module 6 is used to acquire the sudden factor. The second detection module 7 is used to detect line faults based on sudden factors.

[0101] Thirdly, this application discloses a smart terminal, including a memory and a processor. The memory stores a computer program that can run on the processor. When the processor loads the computer program, it executes a medium-voltage power distribution line fault detection method according to the above embodiment.

[0102] Fourthly, embodiments of this application disclose a computer-readable storage medium, wherein a computer program is stored in the computer-readable storage medium, and when the computer program is loaded by a processor, it executes a medium-voltage power distribution line fault detection method according to the above embodiments.

[0103] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A method for detecting faults in medium-voltage power distribution lines, characterized in that, include: Determine whether a fault alarm associated with a line fault has been received; If the fault alarm is received, the fault area and fault type corresponding to the fault alarm are obtained based on the fault alarm; Based on the fault area and the fault type, determine whether the fault alarm is a specified alarm; If the fault alarm is the specified alarm, then the line fault is detected based on the specified alarm; If the fault alarm is not the designated alarm, then determine whether there are any sudden factors related to the line fault in the fault area within the preset time range; If there is a sudden factor associated with the line fault, then obtain the sudden factor; Based on the aforementioned sudden factors, the line fault is detected; If there are no sudden factors associated with the line fault, then obtain historical fault records; Based on the historical fault records, the number of faults caused by different power distribution equipment to the line is obtained; Based on a preset sorting rule, the number of faults is sorted and a fault sorting list is generated; Based on the fault ranking list and preset detection rules, the line faults are detected; The specific steps for detecting line faults based on the fault ranking list and preset detection rules include: Based on the fault ranking list, determine whether there are any equal fault counts; If there are equal numbers of the aforementioned faults, then the power distribution equipment with the same number of faults is marked as the target equipment; Obtain the device information of the target device; Based on the device information, the current usage time and rated usage time of the target device are obtained; Determine whether the current usage time exceeds the rated usage time; If the current usage time exceeds the rated usage time, the power distribution equipment will be marked as expired equipment. The line faults are detected based on the fault ranking list, the preset detection rules, and the expired equipment. If the current usage time does not exceed the rated usage time, then obtain the power distribution line distribution map and population density of the fault area; Based on the power distribution line distribution map, the population density, and the preset detection rules, the line faults are detected.

2. The method for detecting faults in medium-voltage power distribution lines according to claim 1, characterized in that, The specific steps for determining whether the fault alarm is a specified alarm based on the fault area and the fault type include: Determine whether the faulty area meets the preset area requirements; If the fault area meets the preset area requirements, then determine whether the fault type meets the preset type requirements; If the fault type meets the preset type requirement, then the fault alarm is determined to be the specified alarm; If the fault area does not meet the preset area requirements and / or if the fault type does not meet the preset type requirements, then the fault alarm is determined to be not the specified alarm.

3. The method for detecting faults in medium-voltage power distribution lines according to claim 1, characterized in that, If there is a sudden factor associated with the line fault, the specific steps for obtaining the sudden factor include: If there are any sudden factors associated with the line fault, then obtain the historical safety information of the fault area; Based on the historical safety information, determine whether a safety incident related to the line fault has occurred in the fault area; If a safety incident related to the line fault occurs within the fault area, the safety incident will be considered as the sudden incident factor.

4. The method for detecting faults in medium-voltage power distribution lines according to claim 3, characterized in that, After determining whether a safety incident related to the line fault has occurred within the fault area based on the historical safety information, the method further includes: If no safety incident related to the line fault occurs within the fault area, then the target information of the fault area is obtained; Based on the target information, determine whether a target disaster has occurred within the fault area; If the target disaster occurs within the fault area, the target disaster will be considered as the sudden factor.

5. A fault detection system for medium-voltage power distribution lines, characterized in that, include: The first judgment module (1) is used to determine whether a fault alarm associated with a line fault has been received; If the first acquisition module (2) receives the fault alarm, the first acquisition module (2) is used to acquire the fault area and fault type corresponding to the fault alarm based on the fault alarm; The second judgment module (3) is used to determine whether the fault alarm is a specified alarm based on the fault area and the fault type; The first detection module (4) is used to detect the line fault based on the specified alarm if the fault alarm is the specified alarm. The third judgment module (5) is used to determine whether there are any sudden factors related to the line fault in the fault area within a preset time range if the fault alarm is not the specified alarm. If there is a sudden factor associated with the line fault, the second acquisition module (6) is used to acquire the sudden factor. The second detection module (7) is used to detect the line fault based on the sudden factors; If there are no sudden factors associated with the line fault, then obtain historical fault records; Based on the historical fault records, the number of faults caused by different power distribution equipment to the line is obtained; Based on a preset sorting rule, the number of faults is sorted and a fault sorting list is generated; Based on the fault ranking list and preset detection rules, the line faults are detected; The specific steps for detecting line faults based on the fault ranking list and preset detection rules include: Based on the fault ranking list, determine whether there are any equal fault counts; If there are equal numbers of the aforementioned faults, then the power distribution equipment with the same number of faults is marked as the target equipment; Obtain the device information of the target device; Based on the device information, the current usage time and rated usage time of the target device are obtained; Determine whether the current usage time exceeds the rated usage time; If the current usage time exceeds the rated usage time, the power distribution equipment will be marked as expired equipment. The line faults are detected based on the fault ranking list, the preset detection rules, and the expired equipment. If the current usage time does not exceed the rated usage time, then obtain the power distribution line distribution map and population density of the fault area; Based on the power distribution line distribution map, the population density, and the preset detection rules, the line faults are detected.

6. A smart terminal, comprising a memory and a processor, characterized in that, The memory is used to store computer programs that can run on the processor, and when the processor loads the computer program, it executes the method of any one of claims 1 to 4.

7. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is loaded by the processor, it executes the method of any one of claims 1 to 4.

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