Low-voltage cable branch box inspection device, method and equipment and storage medium

Abstract

The invention relates to a low-voltage cable branch box inspection device, method and equipment and a storage medium, the device comprises a data acquisition module, a man-machine interaction module and a state detection module, and the method is applied to the device and comprises the following steps: acquiring voltage data in real time; the voltage data comprises power supply side three-phase voltage data and load side three-phase voltage data; obtaining preset parameters, wherein the preset parameters comprise a power failure judgment voltage threshold value and an inspection period of each fuse; the voltage effective value of each phase of the fuse is calculated based on the voltage data, a state detection result is output based on the voltage effective values and preset parameters, event information is generated based on the state detection result, and the equipment and the medium are used for achieving the method. Compared with the prior art, by directly detecting the condition of each phase voltage detection circuit on the wire outlet side of each fuse, the fusing phase can be visually and quickly found.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power operation and maintenance management, and in particular to a low-voltage cable branch box inspection device, method, equipment and storage medium. Background Art

[0002] In the operation of the distribution network, the fuse failure of the 0.4kV cable branch box outgoing line circuit often occurs. Under this condition, it is difficult to judge from the appearance which phase of the cable branch box fuse is blown. Non-operation and maintenance personnel often cannot locate the faulty circuit in time, which prolongs the fault handling time.

[0003] The frequent occurrence of such incidents has greatly increased the work pressure of power grid operation and maintenance personnel. Failure to timely analyze and find the cause of the fault will also cause a decline in user satisfaction, thereby affecting the image of the power supply company. In response to the above problems, inspection personnel often open the cable branch box and use a multimeter to test each phase to determine the blown phase. Not only is the test process complicated and time-consuming, but if a cable branch box containing multiple fuses is encountered, work efficiency cannot be guaranteed.

[0004] Therefore, providing a simple inspection method that can shorten the inspection time and ensure the inspection efficiency is a problem that needs to be solved. Summary of the invention

[0005] The purpose of the present invention is to provide a low-voltage cable branch box inspection device, method, equipment and storage medium in order to overcome the defects of the above-mentioned prior art.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] According to a first aspect of the present invention, there is provided a low-voltage cable branch box inspection device, comprising:

[0008] Data acquisition module: This module is respectively connected to the three-phase voltage terminal on the power supply side, the neutral terminal on the power supply side and the three-phase voltage terminal on the load side of the low-voltage cable branch box, and collects voltage data including the three-phase voltage data on the power supply side and the three-phase voltage data on the load side; the load side is the outgoing line side of the fuse;

[0009] Human-computer interaction module: used to transmit the preset parameters set by the user based on the user end to the status detection module through wireless communication, and receive the event information and status detection results of the status detection module, and select whether to issue an early warning according to the status detection results. If an early warning is issued, the early warning result and event information are returned to the user end through wireless communication, otherwise the event information is returned to the user end through wireless communication; wherein the preset parameters include the power outage judgment voltage threshold and inspection cycle of each fuse; the condition for the early warning is that the status detection result is a power outage;

[0010] State detection module: acquires voltage data and preset parameters in real time, calculates the voltage effective value based on the voltage data of each phase, outputs the state detection result based on the voltage effective value and preset parameters, and generates event information based on the state detection result.

[0011] As a preferred technical solution, the power supply of the device is provided by any phase live wire and neutral end of the power supply side.

[0012] As a preferred technical solution, the number of connections between the device and the three-phase voltage terminal on the load side matches the number of outgoing lines of all fuses in the cable branch box.

[0013] As a preferred technical solution, the wireless communication method is Bluetooth communication.

[0014] According to a second aspect of the present invention, a low-voltage cable branch box inspection method is provided, the method comprising:

[0015] Collect voltage data in real time, the voltage data including three-phase voltage data on the power supply side and three-phase voltage data on the load side;

[0016] Obtaining preset parameters, wherein the preset parameters include a power outage judgment voltage threshold and an inspection cycle of each fuse;

[0017] The effective voltage value of each phase of the fuse is calculated based on the voltage data, the state detection result is output based on the effective voltage value and preset parameters, and event information is generated based on the state detection result.

[0018] As a preferred technical solution, the power outage judgment voltage threshold is 1V, and the inspection cycle is 1s.

[0019] As a preferred technical solution, if the preset parameters are not obtained, the preset parameters are set to default values, wherein the default value of the power outage judgment voltage threshold is 1V, and the default value of the inspection period is 1s.

[0020] As a preferred technical solution, the method for outputting the state detection result is:

[0021] Initialize loop status;

[0022] Calculate the voltage effective value of each phase circuit of the fuse based on the voltage data, and obtain the power outage judgment voltage threshold and inspection cycle;

[0023] During the operation of the low-voltage cable branch box, the following steps are performed for each circuit cycle:

[0024] The inspection cycle is divided into multiple small cycles, the mean value of the effective voltage in each small cycle is calculated, the mean value is compared with the power outage judgment voltage threshold, and the status detection result of the small cycle is updated;

[0025] If the state detection result of each small cycle in the inspection cycle is energized, the circuit state is determined to be energized; if the state detection result of each small cycle is power off, the circuit state is determined to be power off; otherwise, the circuit state detection result does not change;

[0026] If the loop status in the inspection cycle changes compared with the loop status detection result of the previous inspection cycle, the start time of the current inspection cycle is used as the state detection result change time, and event information is output based on the loop information, loop phase position information and state detection result change time;

[0027] Enter the next inspection cycle.

[0028] According to a third aspect of the present invention, there is provided an electronic device, comprising a memory and a processor, wherein a computer program is stored in the memory, and the method described above is implemented when the processor executes the program.

[0029] According to a fourth aspect of the present invention, there is provided a computer-readable storage medium having a computer program stored thereon, wherein the program implements the method described when executed by a processor.

[0030] Compared with the prior art, the present invention detects the voltage on each phase outgoing side of the fuse in an intuitive and efficient manner, thereby detecting the blown phase in the circuit. This eliminates the need for item-by-item detection, thereby shortening the detection time and improving the detection efficiency. The detection results can also be transmitted back to the user end by wireless communication, so that the operating status of each phase circuit can be obtained without the need for inspection personnel to open the cable branch box door. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a working principle diagram of the device of the present invention;

[0032] Figure 2 is a flow chart of the method of the present invention;

[0033] Figure 3 It is a state detection flow chart of the present invention;

[0034] Figure 4 This is the initialization loop process of the present invention. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0036] Details of one or more embodiments of the present application are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent.

[0037] Example 1

[0038] This embodiment provides a low-voltage cable branch box inspection device, the power supply of which is provided by any live wire and neutral terminal of the three-phase voltage terminal on the power supply side of the cable branch box. The working principle of the device is as follows: Figure 1 As shown, including:

[0039] (1) Data acquisition module:

[0040] The module is respectively connected to the three-phase voltage terminal on the power supply side, the neutral terminal on the power supply side and the three-phase voltage terminal on the load side of the low-voltage cable branch box, wherein the load side is the outgoing line side of the fuse and the number of connections between the module and the three-phase voltage terminal on the load side matches the number of outgoing lines of all fuses.

[0041] The module collects voltage data including three-phase voltage data on the power supply side and three-phase voltage data on the load side through voltage sensors at the three-phase voltage terminal on the power supply side, the neutral terminal on the power supply side and the three-phase voltage terminal on the load side.

[0042] (2) Human-computer interaction module:

[0043] This module is used to transmit the power outage judgment voltage threshold and inspection cycle of each fuse set by the user on the user side to the status detection module via Bluetooth, and receive the event information and status detection results of the status detection module. If the status detection result is a power outage, the warning result and event information will be returned to the user side via Bluetooth, otherwise the event information will be returned to the user side via Bluetooth.

[0044] Among them, when the circuit status detection result changes from energized to power outage, the output event information includes the time when the status detection result changes, the phase position information of the circuit where the power outage occurs, and the status detection result; if the circuit status detection result remains unchanged as the power outage, the output event information includes the phase position information of the circuit where the power outage occurs, the time when the power outage occurs, and the status detection result; if the circuit status detection result remains energized, the output event information includes the status detection result; if the circuit status detection result changes from power outage to energized, the output event information includes the time when the status detection result changes and the status detection result.

[0045] (3) Status detection module:

[0046] This module is used to obtain voltage data and preset parameters in real time, calculate the voltage effective value based on the voltage data of each phase, output the status detection result based on the voltage effective value and preset parameters, and generate event information based on the status detection result.

[0047] Example 2

[0048] This embodiment provides an inspection method for the inspection device provided in Embodiment 1, and its process is as follows: Figure 2 As shown, it includes the following steps:

[0049] S1. Real-time acquisition of voltage data including three-phase voltage data on the power supply side and three-phase voltage data on the load side.

[0050] S2. Obtain the preset power outage judgment voltage threshold and inspection cycle of each fuse, wherein the power outage judgment voltage threshold of each fuse is set to 1V, and the inspection cycle is set to 1s; if the preset power outage judgment voltage threshold and inspection cycle of each fuse are not obtained, obtain the default value, wherein the default value of the power outage judgment voltage threshold is 1V, and the default value of the inspection cycle is 1s.

[0051] S3, output status detection results, the process is as follows Figure 3 The detailed steps are as follows:

[0052] S31, initialization loop state, the flow of this part is as follows Figure 4 As shown, the loop refers to any phase of the fuse output line.

[0053] S32, calculating the effective value of the voltage of each phase of the fuse based on the voltage data, obtaining a power outage judgment voltage threshold of 1V and an inspection cycle of 1s;

[0054] S33. During the operation of the low-voltage cable branch box, the following steps are performed for each loop cycle:

[0055] S331, divide the inspection cycle into 10 small cycles, each small cycle is 100ms long, calculate the average of the effective value of the voltage in each small cycle, compare the average with the power outage judgment voltage threshold, and update the status detection result of the small cycle.

[0056] S332. If the status detection result of each small cycle in the inspection cycle is energized, the circuit state is determined to be energized; if the status detection result of each small cycle is power off, the circuit state is determined to be power off; otherwise, the circuit state detection result does not change.

[0057] S333. If the loop status in the inspection cycle changes compared with the loop status detection result of the previous inspection cycle, the start time of the current inspection cycle is used as the status detection result change time, and event information is output according to the loop phase position information and the status detection result change time.

[0058] S334, enter the next inspection cycle.

[0059] The present embodiment also provides an electronic device, including a central processing unit (CPU), which can perform various appropriate actions and processes according to computer program instructions stored in a read-only memory (ROM) or computer program instructions loaded from a storage unit into a random access memory (RAM). In the RAM, various programs and data required for device operation can also be stored. The CPU, ROM, and RAM are connected to each other via a bus. An input / output (I / O) interface is also connected to the bus.

[0060] Multiple components in the device are connected to the I / O interface, including: input units, such as keyboards, mice, etc.; output units, such as various types of displays, speakers, etc.; storage units, such as disks, optical disks, etc.; and communication units, such as network cards, modems, wireless communication transceivers, etc. The communication unit allows the device to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunication networks.

[0061] The processing unit performs the various methods and processes described above, such as methods S1 to S3. For example, in some embodiments, methods S1 to S3 may be implemented as a computer software program, which is tangibly contained in a machine-readable medium, such as a storage unit. In some embodiments, part or all of the computer program may be loaded and / or installed on the device via a ROM and / or a communication unit. When the computer program is loaded into the RAM and executed by the CPU, one or more steps of methods S1 to S3 described above may be performed. Alternatively, in other embodiments, the CPU may be configured to execute methods S1 to S3 in any other appropriate manner (e.g., by means of firmware).

[0062] The functions described above herein may be performed at least in part by one or more hardware logic components. For example, without limitation, exemplary types of hardware logic components that may be used include: field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), complex programmable logic devices (CPLDs), and the like.

[0063] The program code for implementing the method of the present invention can be written in any combination of one or more programming languages. These program codes can be provided to a processor or controller of a general-purpose computer, a special-purpose computer or other programmable data processing device, so that the program code, when executed by the processor or controller, enables the functions / operations specified in the flow chart and / or block diagram to be implemented. The program code can be executed entirely on the machine, partially on the machine, partially on the machine as a stand-alone software package and partially on a remote machine, or entirely on a remote machine or server.

[0064] In the context of the present invention, a machine-readable medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or equipment. A machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or equipment, or any suitable combination of the foregoing. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, 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 disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0065] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of various equivalent modifications or substitutions within the technical scope disclosed by the present invention, and these modifications or substitutions should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A low voltage cable branch box inspection device, characterized in that: include: Data acquisition module: This module is respectively connected to the three-phase voltage terminal on the power supply side, the neutral terminal on the power supply side and the three-phase voltage terminal on the load side of the low-voltage cable branch box, and collects voltage data including the three-phase voltage data on the power supply side and the three-phase voltage data on the load side; the load side is the outgoing line side of the fuse; Human-computer interaction module: used to transmit the preset parameters set by the user based on the user end to the status detection module through wireless communication, and receive the event information and status detection results of the status detection module, and select whether to issue an early warning according to the status detection results. If an early warning is issued, the early warning result and event information are returned to the user end through wireless communication, otherwise the event information is returned to the user end through wireless communication; wherein the preset parameters include the power outage judgment voltage threshold and inspection cycle of each fuse; the condition for the early warning is that the status detection result is a power outage; State detection module: acquires voltage data and preset parameters in real time, calculates the voltage effective value based on the voltage data of each phase, outputs the state detection result based on the voltage effective value and preset parameters, and generates event information based on the state detection result.

2. A low-voltage cable branch box inspection device according to claim 1, characterized in that: The power supply of the device is provided by any phase live wire and the neutral end of the power supply side.

3. A low-voltage cable branch box inspection device according to claim 1, characterized in that: The number of connections between the device and the three-phase voltage terminal on the load side matches the number of outgoing lines of all fuses in the cable branch box.

4. A low-voltage cable branch box inspection device according to claim 1, characterized in that: The wireless communication method is Bluetooth communication.

5. A low voltage cable branch box inspection method, characterized in that: The method includes: Collect voltage data in real time, the voltage data including three-phase voltage data on the power supply side and three-phase voltage data on the load side; Obtaining preset parameters, wherein the preset parameters include a power outage judgment voltage threshold and an inspection cycle of each fuse; The effective voltage value of each phase of the fuse is calculated based on the voltage data, the state detection result is output based on the effective voltage value and preset parameters, and event information is generated based on the state detection result.

6. A low-voltage cable branch box inspection method according to claim 5, characterized in that: The power outage judgment voltage threshold is 1V, and the inspection cycle is 1s.

7. A low-voltage cable branch box inspection method according to claim 5, characterized in that: If the preset parameters are not obtained, the preset parameters are set to default values, wherein the default value of the power outage judgment voltage threshold is 1V, and the default value of the inspection period is 1s.

8. A low-voltage cable branch box inspection method according to claim 5, characterized in that: The method of outputting the state detection result is: Initialize loop status; Calculate the effective value of the voltage of each phase circuit of the fuse based on the voltage data, and obtain the voltage threshold and inspection cycle for power outage judgment; During the operation of the low-voltage cable branch box, perform the following steps for each circuit cycle: The inspection cycle is divided into multiple small cycles, the mean value of the effective voltage in each small cycle is calculated, the mean value is compared with the power outage judgment voltage threshold, and the status detection result of the small cycle is updated; If the state detection result of each small cycle in the inspection cycle is energized, the circuit state is determined to be energized; if the state detection result of each small cycle is power off, the circuit state is determined to be power off; otherwise, the circuit state detection result does not change; If the loop status in the inspection cycle changes compared with the loop status detection result of the previous inspection cycle, the start time of the current inspection cycle is used as the state detection result change time, and event information is output based on the loop information, loop phase position information and state detection result change time; Enter the next inspection cycle.

9. An electronic device comprising a memory and a processor, wherein a computer program is stored in the memory, wherein: When the processor executes the program, the method according to any one of claims 5 to 8 is implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the method according to any one of claims 5 to 8 is implemented.

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