A Plug-and-Play Method and System for Fault Indicators

Abstract

The present invention relates to a fault indicator plug-and-play method and system. A fault indicator plug-and-play method, comprising the steps of: S1, setting the access number of collection units in a collection unit, and matching the access number of the collection units; S2, the collection unit detecting the file parameters and communication status of all the collection units once at a predetermined interval; S3, determining whether the number of the file parameters is less than the access number; S4, the collection unit detecting whether the communication status of all the collection units is connected; S5, the collection unit performing an automatic access operation. In the event of a collection unit failure, this method removes the failed collection unit and installs a new collection unit according to a predetermined installation method, thereby reducing a large amount of on-site construction and debugging workload and lowering the difficulty of operation and maintenance.

Description

Technical Field

[0001] The present invention relates to the field of fault detection, and in particular to a fault indicator plug-and-play method and system. Background Art

[0002] Distribution lines are numerous and widespread, with complex environments, making them prone to faults such as single-phase grounding. Fault indicators are distributed across distribution lines and serve as sensing units, providing real-time monitoring and awareness of their operating conditions. When a distribution line fault occurs, the fault indicator in the faulty area identifies the characteristic fault current, determines the fault status, and transmits this information to the distribution automation master station. However, in areas not affected by the fault, the characteristic fault current cannot be identified, and the fault status information is not reported to the master station. Ultimately, the master station locates the fault on the distribution line based on the global fault indicator information.

[0003] The fault indicator is installed on the overhead line. Each set consists of three data acquisition units and one data collection unit. The data acquisition units are mounted on the overhead line using a clip-on current transformer. The three data acquisition units are installed on phases A, B, and C of the line, while the data collection unit is mounted on the nearest utility pole. The data acquisition units communicate with each other via micropower wireless technology, with a range of 50 meters in open air. The two fault indicators are installed on the overhead line, with the distance between them exceeding 1000 meters. During operation, a small number of data acquisition units in the fault indicator system have been damaged, resulting in malfunctions and requiring replacement. Furthermore, during installation, the data acquisition units of the two fault indicator systems may be mixed up, causing the data acquisition unit parameters stored in the data collection unit to mismatch with the actual data acquisition unit parameters, leading to communication anomalies between the indicator and the data collection unit. Traditional methods require significant labor and time to configure the parameters of the new data acquisition unit for the data collection unit, or to reconfigure the data acquisition unit parameters after a communication anomaly is detected.

[0004] Patent document ZL201811356803.5 discloses an external signal identification type fault indicator and a fault location method, including an acquisition unit installed on the line and a collection terminal connected to the acquisition unit for communication. The collection terminal is used to collect data sent by nearby acquisition units and report it to the background. The acquisition unit includes a CT power supply device for power supply, a power management module connected to the CT power supply device, an MCU, and a wireless communication module, an analog sampling module, a fault logic judgment module and an alarm respectively connected to the MCU. A ground short circuit fault location method is also disclosed, which can locate the precise fault location point. The present invention can quickly indicate the fault line and fault point, reduce the labor intensity of line patrol personnel, and shorten the fault investigation time. The connection method used is still the traditional connection method. When the acquisition unit fails and needs to be replaced, it cannot be quickly plug-and-play. The speed is slow and affects work efficiency.

[0005] Therefore, there are deficiencies in this field, and inventors are urgently needed to conduct research and development and innovation. Summary of the Invention

[0006] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a fault indicator plug-and-play method and system, which can quickly and automatically adapt to a new acquisition unit when an acquisition unit fails and needs to be replaced, and achieve plug-and-play.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A plug-and-play method for a fault indicator comprises the following steps:

[0009] S1. Setting the number of collection units to be connected in the aggregation unit and matching the collection units to the number of collection units to be connected; configuring archive parameters for all the collection units respectively, and sending the archive parameters to the aggregation unit after accessing the aggregation unit;

[0010] S2. The collection unit detects the file parameters and communication status of all the collection units once at a predetermined interval;

[0011] S3, the aggregation unit determines whether the number of the archive parameters is less than the access number, if so, executing step S5; if not, executing step S4;

[0012] S4, the aggregation unit detects whether the communication status of all the collection units is connected, if so, executes step S2; if not, determines the phase of the collection unit whose communication status is disconnected, and executes step S5;

[0013] S5, the aggregation unit performs an automatic access operation and sends a search acquisition unit command to the outside;

[0014] S6. All the collection units receive the search collection unit command and check whether their own access status is in the accessed state. If so, no command is fed back; if not, a request access command and archive parameters are sent to the outside.

[0015] S7. The aggregation unit receives the access request command and the profile parameters, sends a communication message, confirms the access, and updates the profile parameters of all the accessed collection units; the collection unit updates its own access status to accessed, and executes step S2.

[0016] Preferably, in the plug-and-play method for the fault indicator, the file parameters include: communication address, device type and phase parameters;

[0017] The equipment types include: overhead transient characteristic type, overhead external signal type, and overhead transient recording type;

[0018] The phase parameters include: phase A, phase B, and phase C.

[0019] Preferably, the plug-and-play method for the fault indicator, in step S7, comprises:

[0020] S71, determine whether the access request command and the profile parameters have been received, if so, execute step S72; otherwise, execute step S2;

[0021] S72, parsing the file information to determine whether the phase difference parameter meets the unconnected phase difference of the unconnected acquisition unit. If so, executing step S73; otherwise, executing step S5;

[0022] S73, updating the profile parameters of the disconnected collection units, and sending a confirm access command to the newly connected collection unit to change the communication state of the newly connected collection unit to the connected state;

[0023] S74: The access status of the acquisition unit is changed to connected, and step S2 is executed.

[0024] Preferably, in the fault indicator plug-and-play method, in step S73 and step S74, after the aggregation unit sets the communication status of the newly connected collection unit to the connected state, and after the access status of the collection unit is changed to connected, the indicator lights of the aggregation unit and the collection unit are simultaneously on for 5 seconds.

[0025] Preferably, in the plug-and-play method for the fault indicator, the predetermined time is 2-10 minutes.

[0026] A fault indicator plug-and-play system using the method described above includes a collection unit and a plurality of collection units;

[0027] The acquisition unit includes: a detector, an acquisition communicator, an acquisition controller and an acquisition power supply;

[0028] The detector is used to collect required detection data and transmit the detection data to the acquisition controller;

[0029] The acquisition communicator is used to send and receive signal data according to the instructions of the acquisition controller;

[0030] The acquisition controller is configured to send a request access command, archive parameters, and detection data to the collection unit via the acquisition communicator, and receive a receive search acquisition unit command sent by the collection unit via the acquisition communicator;

[0031] The acquisition power supply is used to supply power to the detector, the acquisition communicator, and the acquisition controller;

[0032] The aggregation unit includes: an aggregation communicator, an aggregation controller and an aggregation power supply;

[0033] The converged communicator is used to send and receive signal data according to the instructions of the converged controller;

[0034] The aggregation controller is used to send a command to search for a collection unit through the aggregation communicator, and receive a send request access command, archive parameters and detection data sent by the collection unit through the aggregation communicator;

[0035] The centralized power supply is used to supply power to the centralized communicator and the centralized controller.

[0036] Preferably, in the fault indicator plug-and-play system, the acquisition communicator and the aggregation communicator both adopt a radio frequency communication device or a LORA spectrum spreading device.

[0037] Preferably, the fault indicator plug-and-play system, wherein the acquisition power source is a CT power taking device, further comprising an acquisition backup power source, wherein the acquisition backup power source is a lithium battery or a supercapacitor;

[0038] The collective power source is a solar power generation device, and also includes a collective backup power source, which is a lithium battery.

[0039] Preferably, in the fault indicator plug-and-play system, the acquisition unit further comprises an acquisition setter for setting the phase parameters in the file parameters;

[0040] The aggregation unit further includes an aggregation setter, which is used to set the access quantity.

[0041] Preferably, in the fault indicator plug-and-play system, both the acquisition unit and the aggregation unit include status indicator lights.

[0042] Compared with the existing technology, the present invention provides a plug-and-play method and system for fault indicators. When a collection unit fails, this method removes the failed collection unit and installs a new collection unit according to a predetermined installation method. The collection unit can be quickly and automatically connected to the aggregation unit without manual operation or configuration, which can reduce a large amount of on-site construction and debugging workload and reduce the difficulty of operation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 is a flow chart of the plug-and-play method for the fault indicator provided by the present invention;

[0044] Figure 2 This is a structural block diagram of the normal use of the fault indicator plug-and-play system provided by the present invention;

[0045] Figure 3 This is a structural block diagram of the fault indicator plug-and-play system provided by the present invention when replacing the fault collection unit;

[0046] Figure 4 This is a structural block diagram of the acquisition unit provided by the present invention;

[0047] Figure 5 This is a structural diagram of an embodiment of a collection unit provided by the present invention;

[0048] Figure 6 It is a structural block diagram of the aggregation unit provided by the present invention;

[0049] Figure 7 It is a structural diagram of an embodiment of the aggregation unit provided by the present invention. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0051] Please also refer to Figure 1-Figure 7 ,in, Figure 5 In the embodiment, the watchdog circuit, the CT power supply circuit, the battery capacitor management circuit, the disposable backup power supply, the small current wake-up circuit, the Rogowski coil sampling circuit, the electric field acquisition circuit, and the lighting circuit are all commonly used circuits in this field and are not specifically limited in the present invention; wherein, EFM32JG is the model of the acquisition controller described in this embodiment. Figure 7In the embodiment, the display, the power management circuit, USB, program download interface, clock crystal oscillator, FLASH, wind speed sensor, temperature and humidity sensor, maintenance serial port, clock circuit, power supply, radio frequency communication module, GPRS, and GPS are common devices in this field. The present invention does not make specific limitations and is only an implementation method. Among them, STM32496 is the model of the aggregation controller described in this embodiment.

[0052] The present invention provides a plug-and-play fault indicator system, comprising a collection unit 1 and a plurality of collection units 2. Generally, the collection unit 2 is used to collect relevant data of a single phase line. Therefore, the number of the collection units 2 is determined according to the number of phase lines in the detection area to be detected. For example, if a 10KV line has three phases A, B, and C, the number of the collection units 2 is three.

[0053] The acquisition unit 2 includes: a detector 21, an acquisition communicator 22, an acquisition controller 23 and an acquisition power supply 24;

[0054] The detector 21 is used to collect required detection data and transmit the detection data to the acquisition controller 23. It should be noted that the specific detection data of the detector 21 is not limited, because it is not certain whether it is for obtaining the current of the current phase or other data. In general, if it is necessary to detect the current of the line, the detection is performed by a current transformer. If it is necessary to detect other data, a corresponding detection device can be replaced, which is not limited in this embodiment. Of course, the detector 21 can have the ability to detect several types of detection data at the same time. In this case, multiple detection devices are integrated, which is not limited in this embodiment.

[0055] The acquisition communicator 22 is used to send and receive signal data according to the instructions of the acquisition controller 23. It should be noted that the communication mode of the acquisition communicator 22 in this embodiment is wireless communication; LORA spread spectrum communication or low power radio frequency communication can be used;

[0056] The acquisition controller 23 is used to send access request commands, archive parameters and detection data to the collection unit 1 through the acquisition communicator 22, and receive the reception search acquisition unit 2 command sent by the collection unit 1 through the acquisition communicator 22. The acquisition controller 23 only needs to have basic processing functions such as data forwarding and communication connection, which can be completed by a common single-chip microcomputer (integrated circuit chip) on the market.

[0057] The data acquisition power supply 24 is used to power the detector 21, the data acquisition communicator 22, and the data acquisition controller 23. It should be noted that in this embodiment, the data acquisition communicator 22 is wirelessly connected, so there is no need for a direct connection between the data acquisition unit 2 and the data collection unit 1. At the same time, both require independent power supply devices. The data acquisition power supply 24 can be powered by solar energy or a removable lithium battery.

[0058] The aggregation unit 1 includes: an aggregation communicator 11, an aggregation controller 12 and an aggregation power supply 13; the aggregation unit 1 does not need to actively detect external data, so it does not need to have a corresponding detection device;

[0059] The aggregation communicator 11 is used to send and receive signal data according to the instructions of the aggregation controller 12; the aggregation communicator 11 is set correspondingly to the acquisition communicator 22. For example, if the acquisition communicator 22 is a low-power radio frequency communication, the aggregation communicator 11 should also be a low-power radio frequency communication;

[0060] The aggregation controller 12 is used to send commands to search for the collection unit 2 through the aggregation communicator 11, and receive the sending request access command, archive parameters and detection data sent by the collection unit 2 through the aggregation communicator 11; the functions implemented by the aggregation controller 12 and the collection controller 23 are similar and can be implemented by selecting a single-chip microcomputer;

[0061] The centralized power supply 13 is used to supply power to the centralized communicator 11 and the centralized controller 12 .

[0062] Accordingly, the present application also provides a plug-and-play method for a fault indicator of the above system, comprising the steps of:

[0063] S1. Setting the number of collection units 2 to be connected in the aggregation unit 1 and matching the collection units 2 to the number of accesses; configuring profile parameters for all the collection units 2, and sending the profile parameters to the aggregation unit 1 after accessing the aggregation unit 1; specifically, setting the number of collection units 2 to be connected in the aggregation unit 1 before each use; the access number is a fixed number of collection units 2 that the aggregation unit 1 allows to be connected during use, i.e., no more (no collection units 2 exceeding the access number can be connected) and no less (if there are fewer, automatic search and access are required; if the number of collection units 2 connected for a certain period of time still cannot reach the access number, a fault is reported to the server, requesting replacement of the corresponding collection unit 2);

[0064] S2, the collection unit 1 detects the file parameters and communication status of all the collection units 2 once at a predetermined interval; specifically, step S2 is that the collection unit 1 regularly detects whether the accessed collection units 2 are normally accessed, and the judgment criteria are whether the number of file parameters is the access number and whether the communication status is all connected;

[0065] S3. Determine whether the number of the file parameters is less than the access number. If so, execute step S5; if not, execute step S4;

[0066] S4, the aggregation unit 1 detects whether the communication status of all the collection units 2 is connected. If so, step S2 is executed; if not, the phase of the collection unit 2 whose communication status is disconnected is determined, and step S5 is executed; preferably, the communication status includes connected and disconnected; the judgment standard is a common criterion in the art, for example, sending data packets at regular intervals and detecting feedback data in real time. If there is feedback, it is connected; if there is no feedback data, it is disconnected;

[0067] S5, the aggregation unit 1 performs an automatic access operation and sends a search command to the collection unit 2;

[0068] S6. All the collection units 2 receive the search collection unit 2 command and check whether their own access status is in the accessed state. If so, no command is fed back; if not, a request access command and file parameters are sent to the outside.

[0069] S7. The aggregation unit 1 receives the access request command and the profile parameters, sends a communication message, confirms the access, and updates the profile parameters of all the accessed collection units 2; the collection unit 2 updates its own access status to accessed, and executes step S2.

[0070] As a preferred solution, in this embodiment, considering the continuous operation of the real-time acquisition unit 2 and the aggregation unit 1, the acquisition communicator and the aggregation communicator both use a radio frequency communication device or a LoRa spread spectrum device, and both use low-power radio frequency communication devices. Preferably, the microwave frequency emitted by the radio frequency communication device is 430 MHz.

[0071] As a preferred solution, in this embodiment, the acquisition power supply 24 is a CT (Current transformer) power supply device, and also includes an acquisition backup power supply, which is a lithium battery or a supercapacitor;

[0072] The collective power source 13 is a solar power generation device, and also includes a collective backup power source, which is a lithium battery.

[0073] Specifically, in actual applications, the acquisition device is installed on the detection phase line, so the acquisition device can be a preferred power supply scheme. The acquisition power supply 24 is a CT power supply device, and the acquisition backup power supply is used when the CT power supply device fails or the grid line is out of power; the collection unit 1 is an independent unit, so it requires an independent power supply. The CT power supply device can be any commonly used one in the field and is not specifically limited. At the same time, the lithium batteries in the acquisition backup power supply and the collection backup power supply are both rechargeable lithium batteries, which are used for temporary power supply when the acquisition power supply 24 and the collection power supply 13 cannot supply power. When the acquisition power supply 24 and the collection power supply 13 can supply power normally, the backup lithium battery can be charged. The supercapacitor refers to a new type of energy storage device between a traditional capacitor and a rechargeable battery. It has the characteristics of fast charging and discharging of a capacitor and the energy storage characteristics of a battery.

[0074] As a preferred solution, in this embodiment, the file parameters include: communication address, device type and phase parameters;

[0075] The equipment types include: overhead transient characteristic type, overhead external signal type, and overhead transient recording type;

[0076] The phase parameters include: phase A, phase B, and phase C.

[0077] As a preferred solution, in this embodiment, the acquisition unit 2 also includes a setter for setting the phase parameters in the profile parameters. It should be noted that the specific form of the setter is not limited, as long as it can achieve the corresponding function; it can be mechanical, push-button, or other known technologies that can achieve the same function. Similarly, the aggregation unit 1 should have a setting module for setting the number of accesses.

[0078] As a preferred solution, in this embodiment, step S7 includes:

[0079] S71, determine whether the access request command and the profile parameters have been received, if so, execute step S72; otherwise, execute step S2;

[0080] S72, parsing the file information to determine whether the phase difference parameter meets the unconnected phase difference where the unconnected acquisition unit 2 is located. If so, executing step S73; otherwise, executing step S5;

[0081] S73, updating the profile parameters of the disconnected collection unit 2, and sending a confirmation access command to the newly connected collection unit 2 to change the communication state of the newly connected collection unit 2 to the connected state;

[0082] S74: The access status of the acquisition unit 2 is changed to connected, and step S2 is executed.

[0083] Specifically, when the collection unit 2 is connected to the aggregation unit 1, bidirectional confirmation is required before the connection is finally established, thereby ensuring the accuracy of the device connection.

[0084] As a preferred solution, in this embodiment, both the collection unit 2 and the aggregation unit 1 include status indicator lights.

[0085] As a preferred solution, in this embodiment, in step S73 and step S74, after the aggregation unit 1 sets the communication status of the newly connected collection unit 2 to the connected state, and after the access status of the collection unit 2 is changed to connected, the indicator lights of the aggregation unit 1 and the collection unit 2 are simultaneously on for 5 seconds.

[0086] As a preferred solution, in this embodiment, considering that the system provided by the present invention is mainly used to transmit the detected data to the server through the collection unit 1, and the collection unit 2 and the collection unit 1 need to be connected in real time, the connection status between the two needs to be detected at intervals of the predetermined time. Preferably, the predetermined time is 2-10 minutes.

[0087] As a preferred solution, in this embodiment, in step S4, when there are multiple collection units 2 whose communication status is disconnected, multiple collection units 2 are automatically connected simultaneously. The "multiple" herein refers to a specific number of collection units 2 selected within the scannable range that is less than or equal to the number of collection units to be connected. Of course, if the aggregation unit 1 needs to connect to multiple collection units 2, they can also be connected sequentially according to the plug-and-play method for fault indicators provided by the present invention.

[0088] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present invention, and all these changes or substitutions should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A plug-and-play method for a fault indicator, characterized in that: Including steps: S1. Setting the number of collection units to be connected in the aggregation unit and matching the collection units to the number of collection units to be connected; configuring archive parameters for all the collection units respectively, and sending the archive parameters to the aggregation unit after accessing the aggregation unit; S2. The collection unit detects the file parameters and communication status of all the collection units once at a predetermined interval; S3, the aggregation unit determines whether the number of the archive parameters is less than the access number, if so, executing step S5; if not, executing step S4; S4, the aggregation unit detects whether the communication status of all the collection units is connected, if so, executes step S2; if not, determines the phase of the collection unit whose communication status is disconnected, and executes step S5; S5, the aggregation unit performs an automatic access operation and sends a search acquisition unit command to the outside; S6. All the collection units receive the search collection unit command and check whether their own access status is in the accessed state. If so, no command is fed back; if not, a request access command and archive parameters are sent to the outside. S7. The aggregation unit receives the access request command and the profile parameters, sends a communication message, confirms the access, and updates the profile parameters of all the accessed collection units; the collection unit updates its own access status to accessed, and executes step S2.

2. The plug-and-play method for a fault indicator according to claim 1, characterized in that: The file parameters include: communication address, device type and phase parameters; The equipment types include: overhead transient characteristic type, overhead external signal type, and overhead transient recording type; The phase parameters include: phase A, phase B, and phase C.

3. The plug-and-play method for a fault indicator according to claim 2, characterized in that: The step S7 includes: S71, determine whether the access request command and the profile parameters have been received, if so, execute step S72; otherwise, execute step S2; S72, analyzing the file parameters to determine whether the phase parameters meet the unconnected phase where the unconnected acquisition unit is located. If so, executing step S73; otherwise, executing step S5; S73: updating the profile parameters of the disconnected collection units and sending a confirmation access command to the newly connected collection unit to change the communication state of the newly connected collection unit to the connected state; S74: The access status of the acquisition unit is changed to connected, and step S2 is executed.

4. The plug-and-play method for a fault indicator according to claim 3, characterized in that: In step S73 and step S74, after the aggregation unit sets the communication status of the newly connected collection unit to the connected state, and after the access status of the collection unit is changed to connected, the indicator lights of the aggregation unit and the collection unit are simultaneously on for 5 seconds.

5. The plug-and-play method for a fault indicator according to claim 1, characterized in that: The predetermined time is 2-10 minutes.

6. A fault indicator plug-and-play system using the method according to any one of claims 1 to 5, characterized in that: It includes a collection unit and several collection units; The acquisition unit includes: a detector, an acquisition communicator, an acquisition controller and an acquisition power supply; The detector is used to collect required detection data and transmit the detection data to the acquisition controller; The acquisition communicator is used to send and receive signal data according to the instructions of the acquisition controller; The acquisition controller is configured to send a request access command, archive parameters, and detection data to the collection unit via the acquisition communicator, and receive a receive search acquisition unit command sent by the collection unit via the acquisition communicator; The acquisition power supply is used to supply power to the detector, the acquisition communicator, and the acquisition controller; The aggregation unit includes: an aggregation communicator, an aggregation controller and an aggregation power supply; The converged communicator is used to send and receive signal data according to the instructions of the converged controller; The aggregation controller is used to send a command to search for a collection unit through the aggregation communicator, and receive a send request access command, archive parameters and detection data sent by the collection unit through the aggregation communicator; The centralized power supply is used to supply power to the centralized communicator and the centralized controller.

7. The fault indicator plug-and-play system according to claim 6, characterized in that: The collecting communicator and the gathering communicator both adopt a radio frequency communication device or a LORA spectrum spreading device.

8. The fault indicator plug-and-play system according to claim 6, characterized in that: The acquisition power supply is a CT power supply device, and also includes an acquisition backup power supply, which is a lithium battery or a super capacitor; The collective power source is a solar power generation device, and also includes a collective backup power source, which is a lithium battery.

9. The fault indicator plug-and-play system according to claim 6, characterized in that: The acquisition unit further includes an acquisition setter for setting phase parameters in the file parameters; The aggregation unit further includes an aggregation setter, which is used to set the access quantity.

10. The fault indicator plug-and-play system according to claim 6, characterized in that: The collection unit and the aggregation unit both include status indicator lights.

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