A low-voltage fault diagnosis method and device, electronic equipment and storage medium

Abstract

The application discloses a low-voltage fault diagnosis method and device, electronic equipment and a storage medium, and relates to the technical field of power supply. The method comprises the following steps: when a power-off signal sent by a first power distribution terminal is received, power supply information of a plurality of target power distribution terminals in a target area where the first power distribution terminal is located is determined, the first power distribution terminal is a power distribution terminal in the target area whose device state is a power-off state, and the target power distribution terminal is a power distribution terminal in the target area which belongs to a target device type; a low-voltage distribution map of the target area is obtained; and the device type of the first power distribution terminal, the power supply information of the plurality of target power distribution terminals and the low-voltage distribution map are analyzed to obtain a low-voltage fault of the target area. The technical scheme provided by the application can automatically monitor low-voltage lines in a power distribution line, can remotely monitor the low-voltage lines and can diagnose faults of the low-voltage lines.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power supply, and in particular to a low-voltage fault diagnosis method and device, an electronic device, and a storage medium. BACKGROUND

[0002] A power supply enterprise configures a power distribution substation automation switch for a high-voltage power distribution line, and the action signal of the automation switch is included in the centralized monitoring of a dispatch center. If the high-voltage power distribution line fails and is powered off, the dispatch center can achieve timely monitoring and notify on-site personnel to immediately go to the scene for processing. However, there is currently no effective automated monitoring means for low-voltage lines.

[0003] There are many reasons for low-voltage user power failure in low-voltage lines, such as low-voltage line overload, low-voltage air switch overcurrent tripping, and user property boundary point meter box switch tripping. Currently, after a power failure occurs, the user reports the power failure message to the power supply enterprise, and the power supply enterprise determines the power failure cause and failure range by manually checking the scene. Therefore, designing a method for remotely monitoring and diagnosing low-voltage faults has become a problem that needs to be solved. SUMMARY

[0004] The present application provides a low-voltage fault diagnosis method, device, electronic device, and storage medium, which can automatically monitor low-voltage lines in a power distribution line, remotely monitor low-voltage lines, and diagnose low-voltage line faults, achieving the effect of automatically and remotely monitoring low-voltage faults.

[0005] In a first aspect, the present application provides a low-voltage fault diagnosis method, which comprises:

[0006] When receiving a power failure signal sent by a first power distribution terminal, determining power supply information of a plurality of target power distribution terminals in a target area where the first power distribution terminal is located, the first power distribution terminal being a power distribution terminal in the target area with a device state of a power failure state, and the target power distribution terminal being a power distribution terminal in the target area belonging to a target device type;

[0007] Obtaining a low-voltage distribution map of the target area;

[0008] Analyzing the device type of the first power distribution terminal, the power supply information of the plurality of target power distribution terminals, and the low-voltage distribution map to obtain a low-voltage fault of the target area.

[0009] Further, the low-voltage fault includes a low-voltage fault cause and a low-voltage fault region; and the low-voltage fault of the target area is obtained by analyzing the device type of the first power distribution terminal, the power supply information of the plurality of target power distribution terminals, and the low-voltage distribution diagram, including: when the device type is a first device type, determining whether there is at least one target power distribution terminal whose power supply information is in a power-off state in the plurality of target power distribution terminals; if not, determining that the low-voltage fault cause is that the first power distribution terminal has a tripping fault; when the device type is a second device type, determining whether the power supply information of each power distribution terminal in the plurality of target power distribution terminals is in a power-off state; if so, obtaining the switch state of the second power distribution terminal in the target area, and determining the low-voltage fault cause of the target area based on the switch state, the second power distribution terminal being a power distribution terminal in the target area whose device type is a low-voltage end switch device; if not, determining that the low-voltage fault cause is that there is a broken line fault in the low-voltage branch in the target area, and determining the low-voltage fault region of the target area based on the power supply information of the plurality of target power distribution terminals and the low-voltage distribution diagram.

[0010] Further, the low-voltage fault cause of the target area is determined based on the switch state, including: if the switch state is a tripping state, determining that the low-voltage fault cause is that the second power distribution terminal has a tripping fault; and if the switch state is a connected state, determining that the low-voltage fault cause is that there is a fault in the transformer in the target area.

[0011] Further, the low-voltage fault region of the target area is determined based on the power supply information of the plurality of target power distribution terminals and the low-voltage distribution diagram, including: determining a main trunk line and a plurality of branch lines in the low-voltage distribution diagram based on the power supply information; determining the live state of a plurality of power nodes on the main trunk line, the plurality of power nodes being nodes corresponding to the plurality of branch lines on the main trunk line, and the live state of each power node being determined by the power supply information of the target power distribution terminal included in each branch line; and analyzing the live state of the plurality of power nodes to obtain the low-voltage fault region.

[0012] Further, the energized state includes a power-off state and a power-on state; the analysis on the energized state of the plurality of power nodes to obtain the low-voltage fault area includes: determining a target power node belonging to the power-off state in the plurality of power nodes according to a preset node sequence; determining whether there is a first power node belonging to the power-on state in the power nodes after the target power node in the preset node sequence; if not, determining the low-voltage fault area as a low-voltage line path between the target power node and a second power node, the second power node being a power node after the target power node in the preset node sequence and adjacent to the target power node; if yes, determining that the low-voltage fault is caused by a missing phase fault of a low-voltage single-phase to which the target power node belongs, and determining the low-voltage fault area as a low-voltage line path between the target power node and a third power node, the third power node being a power node before the target power node in the preset node sequence and adjacent to the target power node.

[0013] Further, after determining that the low-voltage fault area is a low-voltage line path between the target power node and the third power node, the method further includes: receiving an input operation of a first checking result of the missing phase fault of the low-voltage single-phase by a maintenance personnel; if the first checking result is that the low-voltage single-phase has no fault, generating checking prompt information, the checking prompt information being used to prompt checking whether the low-voltage distribution diagram matches a field power three-phase diagram; receiving an input operation of a second checking result corresponding to the checking prompt information by the maintenance personnel; if the second checking result is that the low-voltage distribution diagram matches the field power three-phase diagram, generating error prompt information, the error prompt information being used to prompt that the power supply information of the plurality of target power distribution terminals has an error.

[0014] Further, before determining that the low-voltage fault is caused by the missing phase fault of the low-voltage single-phase to which the target power node belongs, the method further includes: determining whether the target power node and the first power node belong to the same phase; if not, generating the checking prompt information; if yes, determining that the low-voltage fault is caused by the missing phase fault of the low-voltage single-phase to which the target power node belongs.

[0015] In a second aspect, the present application provides a low-voltage fault diagnosis device, which comprises:

[0016] A first information determination module is configured to determine power supply information of a plurality of target power distribution terminals in a target area when receiving a power-off signal sent by a first power distribution terminal, the first power distribution terminal being a power distribution terminal in the target area with a device state of a power-off state, and the target power distribution terminal being a power distribution terminal in the target area belonging to a target device type.

[0017] a second information determining module, configured to acquire a low-voltage distribution map of the target area;

[0018] a low-voltage fault analyzing module, configured to analyze the device type of the first power distribution terminal, the power supply information of the plurality of target power distribution terminals, and the low-voltage distribution map, to obtain a low-voltage fault of the target area.

[0019] In a third aspect, the present application provides an electronic device, comprising: at least one processor; and a memory connected with the at least one processor in communication; wherein the memory stores a computer program which can be executed by the at least one processor, and the computer program is executed by the at least one processor to enable the at least one processor to execute the low-voltage fault diagnosis method according to any of the embodiments of the present application.

[0020] In a fourth aspect, the present application provides a computer readable storage medium, which stores computer instructions for enabling a processor to implement the low-voltage fault diagnosis method according to any of the embodiments of the present application when executed.

[0021] In a fifth aspect, the present application provides a computer program product comprising a computer program which, when executed by a processor, implements the low-voltage fault diagnosis method according to any of the embodiments of the present application.

[0022] To solve the defects of the prior art in the background art, the embodiments of the present application provide a low-voltage fault diagnosis method, and the execution of the method can bring the following beneficial effects: the present application designs a low-voltage fault diagnosis system, when any power distribution terminal (i.e. the first power distribution terminal) in the power distribution line is powered off, the microprocessor in the low-voltage fault diagnosis system can report a power-off signal, and then the microprocessor can acquire power supply information of a plurality of electric meters (such as electric meters) in a target area where the first power distribution terminal is located, and then analyze the low-voltage power failure of the target area in combination with a low-voltage distribution map of the target area to obtain a low-voltage fault. The present application can automatically monitor the low-voltage line in the power distribution line, can remotely monitor and diagnose faults of the low-voltage line, and can achieve the effect of automatically and remotely monitoring the low-voltage fault.

[0023] It should be noted that the computer instructions can be stored on the computer readable storage medium in whole or in part. The computer readable storage medium can be packaged together with the processor of the low-voltage fault diagnosis device, or can be packaged separately from the processor of the low-voltage fault diagnosis device, and the present application does not limit this.

[0024] The description of the second aspect, the third aspect, and the fifth aspect in the present application can refer to the detailed description of the first aspect; and the beneficial effects of the description of the second aspect, the third aspect, and the fifth aspect can refer to the beneficial effect analysis of the first aspect, which will not be repeated here.

[0025] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present application, nor to limit the scope of the present application. Other features of the present application will become apparent from the following description.

[0026] It can be understood that, before using the technical solutions disclosed in the embodiments of the present application, the type, scope of use, and use scenario of the personal information involved in the present application should be informed to the user and the authorization of the user should be obtained through appropriate means according to relevant laws and regulations. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0028] Figure 1 The first flowchart of a low-voltage fault diagnosis method provided by the embodiments of the present application;

[0029] Figure 2 The second flowchart of a low-voltage fault diagnosis method provided by the embodiments of the present application;

[0030] Figure 3 The topological diagram of a low-voltage distribution map provided by the embodiments of the present application;

[0031] Figure 4 The structural diagram of a low-voltage fault diagnosis device provided by the embodiments of the present application;

[0032] Figure 5 The block diagram of an electronic device for implementing a low-voltage fault diagnosis method according to the embodiments of the present application. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should be within the scope of protection of the present application.

[0034] It should be noted that the terms "first", "second", "target", and "original" and the like in the description and claims of the application and above drawings are used only to distinguish similar objects, and do not necessarily have to be used to describe a particular order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the application described herein can be implemented in other than the order illustrated or described herein. In addition, the terms "include", "have" and any variation thereof are intended to cover the non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0035] Figure 1 The first flowchart of the low-voltage fault diagnosis method provided by the embodiments of the application can be applied to the case of automatically monitoring and diagnosing the fault in the low-voltage line. The low-voltage fault diagnosis method provided by the embodiments of the application can be executed by the low-voltage fault diagnosis device provided by the embodiments of the application. The device can be realized by software and / or hardware, and integrated in the electronic device for executing the method. Preferably, the electronic device in the embodiments of the application can be a microprocessor in the low-voltage fault diagnosis system.

[0036] Referring to Figure 1 The method of the embodiments includes but is not limited to the following steps:

[0037] S110, when receiving the power failure signal sent by the first power distribution terminal, determining the power supply information of a plurality of target power distribution terminals in the target area where the first power distribution terminal is located.

[0038] The first power distribution terminal is a power distribution terminal in the target area with a device state of power failure, which can include a user's meter box switch, a user's electric meter, a low-voltage main switch in the low-voltage line or a low-voltage branch switch in the low-voltage line. It can be understood that the number of the first power distribution terminal can be one or at least one. The target power distribution terminal is a power distribution terminal in the target area belonging to the target device type. The application does not limit the target device type, which can be any one of a plurality of device types of the power distribution terminal in the target area. The embodiments take the user's electric meter as an example to explain the low-voltage fault diagnosis method of the application. The power supply information refers to the power supply state of the power distribution terminal in the power distribution line, which can include the power failure state and the power-on state.

[0039] In the embodiment of the present application, the power distribution line in the target area includes a plurality of power distribution terminals, and the low-voltage fault diagnosis system can perform full data collection on all power distribution terminals in the power distribution line every interval calculation period (for example, 15 minutes) to determine a first power distribution terminal in a power-off state. Due to the large number of power distribution terminals in the entire power distribution line, in order to reduce the resource pressure of the server and improve efficiency, the method of actively uploading the power-off signal can be adopted, specifically: when a single or several power distribution terminals (denoted as the first power distribution terminal) are in a power-off state, the power distribution terminal can actively upload the power-off signal to the microprocessor in the low-voltage fault diagnosis system, wherein the power-off signal can include the identification number of the area where the power distribution terminal is located. After the microprocessor receives the power-off signal sent by the first power distribution terminal, the power-off signal is analyzed to obtain the identification number of the target area corresponding to the first power distribution terminal. Then, the microprocessor performs full data collection on the power meters (i.e., target power distribution terminals) in the power distribution line of the target area to obtain the power supply information of all power meters in the target area.

[0040] Optionally, the microprocessor can also determine the number of power meters in a power-off state, and can further collect the switch states of the low-voltage main switch and the low-voltage branch switch.

[0041] S120, acquiring a low-voltage distribution map of the target area.

[0042] The low-voltage distribution map in the embodiment refers to the wiring circuit information, wire diameter information, and spatial position information of each power distribution terminal in the power distribution line. The microprocessor can acquire the low-voltage distribution map of the target area from a storage unit for storing the low-voltage distribution map or a database for maintaining the low-voltage distribution map based on the identification number of the target area.

[0043] S130, analyzing the device type of the first power distribution terminal, the power supply information of the plurality of target power distribution terminals, and the low-voltage distribution map to obtain a low-voltage fault of the target area.

[0044] The low-voltage fault includes a low-voltage fault cause and a low-voltage fault area. The device type can include a user-side switch device, a low-voltage side switch device, and an electric meter device, wherein the user-side switch device can be a meter box switch, the low-voltage side switch device can be a low-voltage main switch or a low-voltage branch switch, and the electric meter device can be a power meter.

[0045] In the embodiment of the application, when the device types of the first power distribution terminal are different, the low-voltage fault reasons causing the power outage are different. First, after the microprocessor receives the power outage signal of the first power distribution terminal, the device type sent by the first power distribution terminal needs to be determined. Then, the microprocessor can preliminarily determine at least one initial low-voltage fault reason based on the device type, such as a tripping fault of a certain power distribution terminal or a broken line fault of a certain low-voltage branch. Second, the microprocessor analyzes the power supply information of all the meters (i.e., multiple target power distribution terminals) in the target area and the low-voltage distribution map, and determines the final low-voltage fault reason and the low-voltage fault area from the at least one initial low-voltage fault reason.

[0046] The technical scheme provided by the embodiment of the application, when receiving the power outage signal sent by the first power distribution terminal, determines the power supply information of multiple target power distribution terminals in the target area where the first power distribution terminal is located; obtains a low-voltage distribution map of the target area; analyzes the device type of the first power distribution terminal, the power supply information of the multiple target power distribution terminals, and the low-voltage distribution map to obtain a low-voltage fault of the target area. The application designs a low-voltage fault diagnosis system. When a power outage occurs in any power distribution terminal (i.e., the first power distribution terminal) in the power distribution line, the microprocessor in the low-voltage fault diagnosis system can report a power outage signal to the microprocessor, and then the microprocessor obtains the power supply information of multiple meters (such as meters) in the target area where the first power distribution terminal is located, and then analyzes the low-voltage power outage of the target area in combination with the low-voltage distribution map of the target area to obtain a low-voltage fault. The application can automatically monitor the low-voltage line in the power distribution line, remotely monitor and diagnose the low-voltage line, and achieve the effect of automatically and remotely monitoring the low-voltage fault.

[0047] The low-voltage fault diagnosis method provided by the embodiment of the application is further described below, Figure 2 The second flowchart of the low-voltage fault diagnosis method provided by the embodiment of the application is shown. The embodiment of the application is optimized on the basis of the above-mentioned embodiments, and the diagnosis process of the low-voltage fault reason and the low-voltage fault area is explained in detail.

[0048] Referring to Figure 2 The method of the embodiment of the application includes but is not limited to the following steps:

[0049] S210, when the device type is the first device type, determining whether there is at least one target power distribution terminal whose power supply information is in a power outage state in the multiple target power distribution terminals.

[0050] The first device type can be a user-side switch device, for example, the user-side switch device can be a meter box switch.

[0051] In the embodiment of the present application, the microprocessor determines that the first power distribution terminal is a meter box switch, that is, there is a single user meter box switch in the target area sending a trip signal to the microprocessor, at this time, the microprocessor performs full data survey on the meters in the power distribution line of the target area (i.e., the target power distribution terminal) to determine whether there is at least one meter that has failed to supply power, that is, the power supply information of the meter is in a power-off state.

[0052] S220, if not, determining that the low-voltage fault reason is that the first power distribution terminal has a trip fault.

[0053] In the embodiment of the present application, if there is no power supply information of at least one target power distribution terminal in a power-off state, it indicates that all meters in the power distribution line of the target area are in a power-on state and none of the meters has failed to supply power, so the microprocessor can determine that the user meter box switch has a trip fault.

[0054] S230, when the device type is a second device type, determining whether the power supply information of each power distribution terminal in the plurality of target power distribution terminals is in a power-off state.

[0055] The second device type can be an electric meter type device, for example, the electric meter type device can be a meter.

[0056] In the embodiment of the present application, the microprocessor determines that the first power distribution terminal is a meter, that is, there is a certain user meter in the target area sending a power-off signal to the microprocessor, at this time, the microprocessor further needs to determine whether each meter in the power distribution line of the target area is in a power-off state.

[0057] S240, if all are in a power-off state, obtaining the switch state of a second power distribution terminal in the target area, and determining the low-voltage fault reason of the target area based on the switch state.

[0058] The second power distribution terminal is a power distribution terminal in the target area whose device type is a low-voltage end switch type device, and the low-voltage end switch type device can be a low-voltage main switch or a low-voltage branch switch.

[0059] In the embodiment of the present application, if the power supply information of each power distribution terminal is in a power-off state, it indicates that there is no normally powered meter (excluding the meter of a single user special case) in the power distribution line of the target area, so the microprocessor needs to further obtain the switch state of the low-voltage main switch or the low-voltage branch switch in the target area, and then determine the low-voltage fault reason of the target area based on the switch state.

[0060] Specifically, the low-voltage fault cause of the target area is determined based on the switch state, including: if the switch state is a tripping state, it is determined that the low-voltage fault cause is that there is a tripping fault in the second power distribution terminal, i.e., the low-voltage main switch or the low-voltage branch switch trips; if the switch state is a connected state, it is determined that the low-voltage fault cause is that there is a fault in the transformer in the target area, i.e., the entire target area is powered off due to the power failure of the transformer side in the power distribution line.

[0061] S250, if not all are powered-off states, it is determined that the low-voltage fault cause is that there is a broken line fault in the low-voltage branch line in the target area, and the low-voltage fault area of the target area is determined based on the power supply information of the plurality of target power distribution terminals and the low-voltage distribution map.

[0062] In the embodiment of the application, if the power supply information of each power distribution terminal is not all powered-off states, it indicates that there is still a normally powered electric meter in the power distribution line of the target area, so the microprocessor can determine that there is a broken line fault in the low-voltage branch line in the target area. Further, the microprocessor also needs to determine the broken line position of the low-voltage branch line, i.e., the low-voltage fault area.

[0063] Specifically, the low-voltage fault area of the target area is determined based on the power supply information of the plurality of target power distribution terminals and the low-voltage distribution map, including:

[0064] First, the main line and the plurality of branch lines are determined in the low-voltage distribution map based on the power supply information.

[0065] In the embodiment, the power distribution terminals (i.e., electric meters) in the powered-off state and the electric meters in the powered-on state can be determined based on the power supply information of the plurality of target power distribution terminals, the low-voltage branch switch to the powered-off electric meter is marked as the main line in the low-voltage distribution map, and the paths of the other powered-on electric meters to the main line are marked as branch lines, so as to determine the main line and the plurality of branch lines in the low-voltage distribution map.

[0066] Then, the power-on states of a plurality of power nodes on the main line are determined, the plurality of power nodes are nodes corresponding to the plurality of branch lines on the main line, and the power-on state of each power node is determined by the power supply information of the target power distribution terminal included in each branch line.

[0067] The connection point of the branch line and the main line in the embodiment can be recorded as a power node, and the plurality of power nodes in the low-voltage distribution diagram are respectively the nodes corresponding to the plurality of branch lines on the main line. By the power supply information of the electric meter contained in each branch line, it is determined whether the branch line is powered off, and further the live state of the power node corresponding to the branch line is determined. For example, if more than 3 / 4 of the electric meters on a branch line have power, it can be determined that the power supply information of the branch line is in a power-on state, and the live state of the power node corresponding to the branch line is in a power-on state; if more than 3 / 4 of the electric meters have no power, it can be determined that the power supply information of the branch line is in a power-off state, and the live state of the power node corresponding to the branch line is in a power-off state. In this way, false judgments caused by abnormal data of an electric meter can be avoided.

[0068] Finally, the live states of the plurality of power nodes are analyzed to obtain a low-voltage fault area.

[0069] Specifically, the live state includes a power-off state and a power-on state; the live states of the plurality of power nodes are analyzed to obtain a low-voltage fault area, including: determining, in a preset node order, a first target power node belonging to the power-off state in the plurality of power nodes; determining whether there is a first power node belonging to the power-on state in the power nodes after the target power node in the preset node order; if not, determining that the low-voltage fault area is a low-voltage line path between the target power node and a second power node, the second power node being a power node adjacent to the target power node and after the target power node in the preset node order; if so, determining that the low-voltage fault is caused by a phase failure of a low-voltage single-phase to which the target power node belongs, and determining that the low-voltage fault area is a low-voltage line path between the target power node and a third power node, the third power node being a power node adjacent to the target power node and before the target power node in the preset node order. The preset node order can be an order from a low-voltage end to a user end in the low-voltage distribution diagram.

[0070] For example, Figure 3 The low-voltage distribution diagram is a topological schematic diagram, and the main line and three power nodes (represented by circle numbers in the figure) are shown in the figure. Assuming that Figure 3 The user electric meter 2, the user electric meter 3, and the user electric meter 4 are all power-off electric meters, that is, the second power node and the third power node are both in a power-off state, and the first power node is in a power-on state. Therefore, it can be determined that the second power node is the target power node, and there is no power node belonging to the power-on state in the power nodes after the target power node. Therefore, the low-voltage fault area is a low-voltage line path between the second power node and the third power node.

[0071] For another example, assuming that Figure 3If the three power meters 4 are all off, that is, the second power node is off, and the first power node and the third power node are on, it can be determined that: the second power node is the target power node, and there is a power node belonging to the on state after the target power node. Therefore, the low-voltage fault reason is that the low-voltage single-phase to which the second power node belongs has an open-phase fault, and the low-voltage fault area is the low-voltage line path between the first power node and the second power node. Optionally, in addition to the low-voltage fault reason being that the low-voltage single-phase to which the second power node belongs has an open-phase fault, it is also possible that the low-voltage distribution diagram is incorrect or the power supply information data is incorrect. The microprocessor needs to investigate these three reasons.

[0072] In an optional embodiment, the process of investigating the three reasons is as follows: first, it is assumed that the low-voltage fault reason is that the low-voltage single-phase to which the second power node belongs has an open-phase fault. After determining that the low-voltage fault area is the low-voltage line path between the target power node and the third power node, the maintenance personnel need to perform low-voltage single-phase open-phase fault checking on the low-voltage fault area to obtain a first checking result, and input the first checking result into the low-voltage fault system. Second, the microprocessor receives the input operation of the first checking result of the maintenance personnel on the low-voltage single-phase open-phase fault; if the first checking result is that the low-voltage single-phase does not have a fault, the microprocessor determines that the low-voltage fault reason is not that the low-voltage single-phase to which the second power node belongs has an open-phase fault, and then assumes that the low-voltage distribution diagram is incorrect, for example: Figure 3 The falling point order of the branch line of the second power node and the branch line of the third power node is incorrect when drawing the low-voltage distribution diagram. At this time, the checking prompt information is generated, and the checking prompt information is used to prompt whether the low-voltage distribution diagram matches the on-site power three-phase diagram. Third, the maintenance personnel check whether the low-voltage distribution diagram matches the on-site power three-phase diagram to obtain a second checking result, and input the second checking result into the low-voltage fault system. The microprocessor receives the input operation of the second checking result corresponding to the checking prompt information by the maintenance personnel; if the second checking result is that the low-voltage distribution diagram matches the on-site power three-phase diagram, the microprocessor determines that the low-voltage distribution diagram is correct, and then determines that the power supply information data is incorrect. At this time, the error prompt information is generated, and the error prompt information is used to prompt the maintenance personnel that the power supply information of multiple target power distribution terminals has an error.

[0073] Preferably, when determining the power supply information of a branch line or the target distribution terminal, the power supply information of the branch line can be determined based on the voltage data of the electricity meter, auxiliary electrical quantity data, and multiple judgment conditions. The auxiliary electrical quantity data may include current, frequency, and switch change information. Judgment conditions may include multiple conditions such as voltage below (0.5 * rated voltage) combined with switch change signals, zero current, and frequency below (0.5 * power frequency), in order to improve the accuracy of the power supply information.

[0074] In another optional embodiment, before determining that the low-voltage fault is caused by a phase loss fault in a single low-voltage phase belonging to the target power node, the method further includes: the microprocessor obtaining the phase sequence of the outage meters in the low-voltage distribution diagram, and determining whether the target power node and the first power node belong to the same phase; if the target power node and the first power node do not belong to the same phase, or if there are outage meters in each of the three phases, the microprocessor notes the abnormal power saving on the low-voltage fault diagram, for example: in Figure 3 If the third power saving branch line has an abnormal energization information, and maintenance personnel are reminded to pay attention and correct the error in the low-voltage extension diagram, a check prompt message will be generated to indicate whether the low-voltage extension diagram matches the on-site three-phase power diagram. If the target power node and the first power node belong to the same phase, the cause of the low-voltage fault is determined to be a phase loss fault in the low-voltage single phase to which the target power node belongs.

[0075] The technical scheme provided by the embodiment determines whether power supply information of at least one target power distribution terminal in the plurality of target power distribution terminals is in a power-off state when the device type is the first device type; if not, it is determined that the low-voltage fault reason is that the first power distribution terminal has a tripping fault; when the device type is the second device type, it is determined whether the power supply information of each power distribution terminal in the plurality of target power distribution terminals is in a power-off state; if so, the switch state of the second power distribution terminal in the target area is obtained, and the low-voltage fault reason of the target area is determined based on the switch state; if not, it is determined that the low-voltage fault reason is that a low-voltage branch line in the target area has a disconnection fault, and the low-voltage fault area of the target area is determined based on the power supply information of the plurality of target power distribution terminals and the low-voltage distribution map. When the first power distribution terminal is a meter box switch, if no meter in the power distribution line of the target area is in a power-off state, it is determined that the meter box switch of the user has a tripping fault. When the first power distribution terminal is a meter, if each meter in the power distribution line of the target area is in a power-off state, the low-voltage fault reason of the target area is determined based on the switch state of the low-voltage main switch or the low-voltage branch switch; if there is still a normally powered meter in the power distribution line of the target area, it is determined that the low-voltage branch line in the target area has a disconnection fault, and the low-voltage fault area needs to be further determined based on the power supply information and the low-voltage distribution map. The application can automatically monitor the low-voltage line in the power distribution line, remotely monitor and diagnose the low-voltage line, and achieve the effect of automatically and remotely monitoring the low-voltage fault.

[0076] Figure 4 A structural schematic diagram of a low-voltage fault diagnosis device provided by an embodiment of the application is shown in FIG. 4. Figure 4 As shown in FIG. 4, the device 400 can include:

[0077] A first information determination module 410 is configured to determine power supply information of a plurality of target power distribution terminals in a target area in which a first power distribution terminal is located when receiving a power-off signal sent by the first power distribution terminal, the first power distribution terminal being a power distribution terminal in the target area whose device state is in a power-off state, and the target power distribution terminal being a power distribution terminal in the target area that belongs to a target device type;

[0078] A second information determination module 420 is configured to obtain a low-voltage distribution map of the target area;

[0079] A low-voltage fault analysis module 430 is configured to analyze the device type of the first power distribution terminal, the power supply information of the plurality of target power distribution terminals, and the low-voltage distribution map to obtain a low-voltage fault of the target area.

[0080] In an embodiment, the low-voltage fault includes a low-voltage fault reason and a low-voltage fault area.

[0081] Further, the low-voltage fault analysis module 430 can be specifically configured to: when the device type is a first device type, determine whether power supply information of at least one target power distribution terminal in the plurality of target power distribution terminals is in a power-off state; if not, determine that the low-voltage fault reason is that the first power distribution terminal has a tripping fault; when the device type is a second device type, determine whether power supply information of each power distribution terminal in the plurality of target power distribution terminals is in a power-off state; if so, obtain a switch state of a second power distribution terminal in the target area, and determine a low-voltage fault reason of the target area based on the switch state, the second power distribution terminal being a power distribution terminal of the low-voltage end switch type in the target area; if not, determine that the low-voltage fault reason is that a low-voltage branch in the target area has a disconnection fault, and determine a low-voltage fault area of the target area based on the power supply information of the plurality of target power distribution terminals and the low-voltage distribution map.

[0082] Further, the low-voltage fault analysis module 430 can specifically include a first determination unit and a second determination unit.

[0083] The first determination unit is configured to: if the switch state is a tripping state, determine that the low-voltage fault reason is that the second power distribution terminal has a tripping fault; and if the switch state is a connected state, determine that the low-voltage fault reason is that a transformer in the target area has a fault.

[0084] The second determination unit is configured to: determine a main line and a plurality of branch lines in the low-voltage distribution map based on the power supply information; determine a power-on state of a plurality of power nodes on the main line, the plurality of power nodes being nodes corresponding to the plurality of branch lines on the main line, and the power-on state of each power node being determined by the power supply information of the target power distribution terminal included in each branch line; and analyze the power-on state of the plurality of power nodes to obtain the low-voltage fault area.

[0085] In an embodiment, the power-on state includes a power-off state and a power-on state.

[0086] Further, the second determining unit can be specifically configured to: determine a first target power node belonging to the power-off state in the plurality of power nodes according to a preset node sequence; determine whether a first power node belonging to the power-on state exists in the power nodes after the target power node in the preset node sequence; if not, determine the low-voltage fault area as a low-voltage line path between the target power node and a second power node, the second power node being a power node after the target power node in the preset node sequence and adjacent to the target power node; if yes, determine that the low-voltage fault is caused by a phase loss fault of a low-voltage single-phase to which the target power node belongs, and determine the low-voltage fault area as a low-voltage line path between the target power node and a third power node, the third power node being a power node before the target power node in the preset node sequence and adjacent to the target power node.

[0087] Further, the second determining unit can be specifically configured to: after determining that the low-voltage fault area is a low-voltage line path between the target power node and a third power node, receive an input operation of a first checking result of the repair personnel on the phase loss fault of the low-voltage single-phase; if the first checking result is that the low-voltage single-phase has no fault, generate checking prompt information, the checking prompt information being used to prompt checking whether the low-voltage distribution map matches the on-site power three-phase map; receive an input operation of a second checking result of the repair personnel on the checking prompt information; if the second checking result is that the low-voltage distribution map matches the on-site power three-phase map, generate error prompt information, the error prompt information being used to prompt that the power supply information of the plurality of target power distribution terminals has an error.

[0088] Further, the second determining unit can be specifically configured to: before determining that the low-voltage fault is caused by a phase loss fault of a low-voltage single-phase to which the target power node belongs, determine whether the target power node and the first power node belong to the same phase; if not, generate the checking prompt information; if yes, determine that the low-voltage fault is caused by a phase loss fault of a low-voltage single-phase to which the target power node belongs.

[0089] The low-voltage fault diagnosis apparatus provided by the embodiment can be applied to the low-voltage fault diagnosis method provided by any of the above embodiments, and has corresponding functions and beneficial effects.

[0090] Figure 5is a block diagram of an electronic device to implement a low-voltage fault diagnosis method according to an embodiment of the present application. The electronic device 10 is intended to represent various forms of digital computers, such as laptops, desktops, tablets, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The electronic device can also represent various forms of mobile devices, such as personal digital assistants, cellular telephones, smartphones, wearable devices (e.g., headsets, glasses, watches, etc.), and other similar computing devices. The components shown here, their connections and relationships, and their functions, are meant to be examples only, and are not meant to limit implementations of the present application described and / or claimed in this document.

[0091] As shown in Figure 5 The electronic device 10 includes at least one processor 11, and a memory, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., connected to the at least one processor 11 in communication, where the memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes according to the computer programs stored in the read-only memory (ROM) 12 or loaded into the random access memory (RAM) 13 from the storage unit 18. In the RAM 13, various programs and data required for the operation of the electronic device 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0092] Various components in the electronic device 10 are connected to the I / O interface 15, including an input unit 16, such as a keyboard, a mouse, etc., an output unit 17, such as various types of displays, speakers, etc., a storage unit 18, such as a magnetic disk, an optical disk, etc., and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information / data with other devices through a computer network, such as the Internet, and / or various telecommunications networks.

[0093] The processor 11 can be various general and / or special-purpose processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 performs various methods and processes described above, such as the low-voltage fault diagnosis method.

[0094] In some embodiments, the diagnostic method of low voltage fault can be implemented as a computer program tangibly embodied in a computer readable storage medium, e.g., storage unit 18. In some embodiments, portions or all of the computer program can be loaded and / or installed onto electronic device 10 via, e.g., ROM 12 and / or communication unit 19. When the computer program is loaded onto RAM 13 and executed by processor 11, one or more of the steps of the diagnostic method of low voltage fault described above can be performed. Alternatively, in other embodiments, processor 11 can be configured to perform the diagnostic method of low voltage fault by other means, e.g., with the aid of firmware.

[0095] Various implementations of the systems and techniques described above can be realized in digital electronic circuitry, integrated circuitry, a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on a chip (SOC), a programmable logic device (PLD), a computer hardware, firmware, software, and / or combinations thereof. These various implementations can include implementation in one or more computer programs that are executable and / or interpretable on a programmable system including at least one programmable processor, which can be special or general purpose, coupled to receive data and instructions from, and to transmit data and instructions to, a storage system, at least one input device, and at least one output device.

[0096] Computer programs used to implement the methods of the present application can be written in any combination of one or more programming languages. These computer programs can be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the computer program, when executed by the processor, implements the functions / acts specified in the flowcharts and / or block diagrams. The computer program can be executed entirely on a machine, partially on a machine, partially on a machine as part of a standalone software package, partially on a machine and partially on a remote machine or entirely on a remote machine or server.

[0097] In the context of this application, a computer readable storage medium can be a tangible medium that can contain or store computer programs for use by or in connection with an instruction execution system, apparatus, or device. Computer readable storage media can include, but are not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. Alternatively, a computer readable storage medium can be a machine readable signal medium. More specific examples of the machine readable storage medium will include a one or more lines of a electrical connection, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0098] To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user and a keyboard and a pointing device (e.g., a mouse or a trackball) by which the user can provide input to the electronic device. Other kinds of devices can be used to provide for interaction with a user as well; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form, including acoustic, speech, or tactile input.

[0099] The systems and techniques described here can be implemented in a computing system that includes a back end component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front end component (e.g., a user computer having a graphical user interface or a Web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such back end, middleware, or front end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include a local area network (LAN), a wide area network (WAN), blockchain networks, and the Internet.

[0100] The computing system can include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system, to solve the defects of large management difficulty and weak business scalability in traditional physical host and VPS service.

[0101] Note that the above merely describes preferred embodiments of the present application and the principles of the technology applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and that various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the present application. For example, those skilled in the art can use the various forms of processes shown above to reorder, add or delete steps; can perform the steps described in the present application in parallel, sequentially or in different order, as long as the desired results of the technical solutions of the present application can be achieved, which is not limited herein.

[0102] The above detailed description does not constitute a limitation on the scope of protection of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A diagnostic method of low voltage fault, characterized in that, The method comprises: When receiving a power-off signal sent by a first power distribution terminal, determining power supply information of a plurality of target power distribution terminals in a target area where the first power distribution terminal is located, the first power distribution terminal being a power distribution terminal in the target area whose device state is a power-off state, and the target power distribution terminal being a power distribution terminal in the target area that belongs to a target device type; Obtaining a low-voltage distribution map of the target area; Analyzing the device type of the first power distribution terminal, the power supply information of the plurality of target power distribution terminals, and the low-voltage distribution map to obtain a low-voltage fault of the target area.

2. The diagnostic method of low voltage fault according to claim 1, characterized in that, The low-voltage fault comprises a low-voltage fault cause and a low-voltage fault area; analyzing the device type of the first power distribution terminal, the power supply information of the plurality of target power distribution terminals, and the low-voltage distribution map to obtain the low-voltage fault of the target area comprises: When the device type is a first device type, determining whether there is at least one target power distribution terminal in the plurality of target power distribution terminals whose power supply information is in a power-off state; If not, determining that the low-voltage fault cause is a trip fault of the first power distribution terminal; When the device type is a second device type, determining whether the power supply information of each power distribution terminal in the plurality of target power distribution terminals is in a power-off state; If so, obtaining a switch state of a second power distribution terminal in the target area, and determining a low-voltage fault cause of the target area based on the switch state, the second power distribution terminal being a power distribution terminal in the target area whose device type is a low-voltage end switch type device; If not, determining that the low-voltage fault cause is a broken line fault of a low-voltage branch in the target area, and determining a low-voltage fault area of the target area based on the power supply information of the plurality of target power distribution terminals and the low-voltage distribution map.

3. The diagnostic method of low voltage fault according to claim 2, characterized in that, Determining the low-voltage fault cause of the target area based on the switch state comprises: If the switch state is a trip state, determining that the low-voltage fault cause is a trip fault of the second power distribution terminal; If the switch state is a connected state, determining that the low-voltage fault cause is a transformer fault in the target area.

4. The diagnostic method of low voltage fault according to claim 2, characterized in that, Determining the low-voltage fault area of the target area based on the power supply information of the plurality of target power distribution terminals and the low-voltage distribution map comprises: Based on the power supply information, a main trunk line and a plurality of branch lines are determined in the low-voltage distribution map; Determining live states of a plurality of power nodes on the main trunk line, the plurality of power nodes being nodes corresponding to the plurality of branch lines on the main trunk line, and the live state of each power node being determined by the power supply information of the target power distribution terminal included in each branch line; Analyzing the live states of the plurality of power nodes to obtain the low-voltage fault area.

5. The diagnostic method of low voltage fault according to claim 4, characterized in that, The live state comprises a power-off state and a power-on state; analyzing the live states of the plurality of power nodes to obtain the low-voltage fault area comprises: According to a preset node order, a first target power node belonging to the power-off state in the plurality of power nodes is determined; determining whether a first power node belonging to the energized state exists in the power nodes behind the target power node in the preset node sequence; if not, determining that the low-voltage fault region is a low-voltage line path between the target power node and a second power node, the second power node being a power node behind the target power node in the preset node sequence and adjacent to the target power node; if yes, determining that the low-voltage fault is caused by an open-phase fault of a low-voltage single-phase to which the target power node belongs, and determining that the low-voltage fault region is a low-voltage line path between the target power node and a third power node, the third power node being a power node before the target power node in the preset node sequence and adjacent to the target power node.

6. The diagnostic method of low voltage fault according to claim 5, characterized in that, After determining that the low-voltage fault region is a low-voltage line path between the target power node and the third power node, the method further comprises: receiving an input operation of a first checking result of the open-phase fault of the low-voltage single-phase by a maintenance personnel; if the first checking result is that the low-voltage single-phase is not faulty, generating a checking prompt information, the checking prompt information being used to prompt a check on whether the low-voltage layout is matched with a field power three-phase diagram; receiving an input operation of a second checking result corresponding to the checking prompt information by the maintenance personnel; if the second checking result is that the low-voltage layout is matched with the field power three-phase diagram, generating an error prompt information, the error prompt information being used to prompt that the power supply information of the plurality of target power distribution terminals is erroneous.

7. The diagnostic method of low voltage fault according to claim 6, characterized in that, Before determining that the low-voltage fault is caused by the open-phase fault of the low-voltage single-phase to which the target power node belongs, the method further comprises: determining whether the target power node and the first power node belong to the same phase; if not, generating the checking prompt information; if yes, determining that the low-voltage fault is caused by the open-phase fault of the low-voltage single-phase to which the target power node belongs.

8. A diagnostic device for low voltage faults, characterized in that The apparatus comprises: a first information determination module configured to determine power supply information of a plurality of target power distribution terminals in a target area when receiving a power-off signal sent by a first power distribution terminal, the first power distribution terminal being a power distribution terminal in the target area with a device state of a power-off state, and the target power distribution terminal being a power distribution terminal in the target area belonging to a target device type; a second information determination module configured to acquire a low-voltage layout of the target area; a low-voltage fault analysis module configured to analyze the device type of the first power distribution terminal, the power supply information of the plurality of target power distribution terminals, and the low-voltage layout to obtain a low-voltage fault of the target area.

9. An electronic device, comprising: The electronic device comprises: at least one processor; and a memory connected with the at least one processor in communication; wherein the memory stores a computer program executed by the at least one processor, and the computer program is executed by the at least one processor to enable the at least one processor to execute the low-voltage fault diagnosis method in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that, when executed by a processor, implement the method for diagnosing low-voltage faults as described in any one of claims 1 to 7.

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