Power distribution switch equipment state monitoring method, system, equipment and storage medium

Abstract

The embodiment of the invention provides a power distribution switch equipment state monitoring method, system and equipment and a storage medium, and the method comprises the steps that an intelligent terminal issues a pre-generated operation request to an intelligent operation rod, and after the intelligent operation rod completes the authentication of target equipment based on the operation request, the intelligent operation rod enters a to-be-operated mode, and the intelligent terminal sends authentication completion information to the intelligent terminal, the intelligent terminal sends an operation sequence to the intelligent operation rod based on the authentication completion information, the intelligent operation rod performs operation based on the operation sequence and transmits operation information back to the distribution equipment through the intelligent terminal, and the distribution equipment updates the distribution network topological graph based on the operation information. According to the method, through anti-misoperation closed-loop control, real-time image and real-time synchronization, standardized process execution and intelligent operation and maintenance management, the crossing of distribution network dispatching from artificial blind regulation to intelligent accurate regulation is realized, the automation coverage rate of a distribution switch is improved, and the accuracy and efficiency of dispatching decision are improved.

Description

Technical Field

[0001] The present application relates to the technical field of power distribution networks, and in particular to a method, system, device and storage medium for monitoring the status of power distribution switchgear. Background Art

[0002] Distribution switch automation technology is an important part of modern power grid management. It uses sensors, communication technology and intelligent control algorithms to achieve remote monitoring and automatic control of switchgear in distribution networks. Related technologies include remote terminal units (RTUs), smart meters, supervisory control and data acquisition (SCADA) systems, and smart grid platforms based on cloud computing and big data. These technologies together form the cornerstone of distribution network automation management and provide strong support for the safe and efficient operation of power grids.

[0003] Although the automation technology of distribution switches has made significant progress, there are still some shortcomings in practical applications. At present, many distribution network dispatching systems still face the problem of low automation coverage, resulting in most equipment still being in a blind adjustment state. This means that dispatchers need to rely on manual settings to switch the status of equipment, which is not only inefficient but also prone to operational errors. In addition, since the dispatch drawings are inconsistent with the actual situation on site, dispatchers may face the risk of inaccurate information when making decisions, which threatens the safe operation of the power grid.

[0004] In summary, how to improve the automation coverage of distribution switches and improve the accuracy and efficiency of dispatching decisions is a technical problem that needs to be solved urgently in this field. Summary of the invention

[0005] The embodiments of the present application provide a distribution switch device status monitoring method, system, device and storage medium to solve the problem of how to improve the automation coverage of distribution switches and improve the accuracy and efficiency of scheduling decisions.

[0006] In a first aspect, an embodiment of the present application provides a method for monitoring the state of a distribution switchgear, which is applied to a distribution network dispatching system, wherein the distribution network dispatching system includes a distribution device, an intelligent operation stick, and an intelligent terminal, wherein the distribution device is communicatively connected to the intelligent terminal, and the intelligent terminal is communicatively connected to the intelligent operation stick; the method includes:

[0007] The smart terminal sends a pre-generated operation request to the smart operation stick, wherein the operation request includes a code, location information, and status information of the target device;

[0008] After the smart operation stick completes authentication of the target device based on the operation request, the smart operation stick enters a standby mode and sends authentication completion information to the smart terminal;

[0009] The smart terminal sends an operation sequence to the smart operation stick based on the authentication completion information, wherein the operation sequence includes the operation parameters and target state information of the target device;

[0010] The smart operating stick operates based on the operation sequence and transmits the operation information back to the blending device through the smart terminal;

[0011] The deployment device updates the distribution network topology map based on the operation information.

[0012] In a possible implementation, the method further includes:

[0013] The smart operation stick performs identity authentication on the target device based on the code of the target device and the status information;

[0014] The smart operation stick performs location authentication on the target device based on the location information of the target device.

[0015] In a possible implementation, the method further includes:

[0016] In response to a user operation, the dispatching device generates a scheduling task and sends the scheduling task to the intelligent terminal, wherein the scheduling task includes a code of at least one target device, target state information of each target device, and an operation sequence;

[0017] The intelligent terminal generates an operation request corresponding to each target device and an operation sequence corresponding to each target device based on the scheduling task.

[0018] In a possible implementation, the smart operating stick operates based on the operation sequence, including:

[0019] The intelligent operating stick controls the torque sensor and the gyroscope to work according to the operating parameters to generate a torque value and a rotation angle;

[0020] The smart operating stick determines that the operation is completed based on the torque value, the rotation angle, the target state information, and a preset in-place standard.

[0021] In a possible implementation manner, if the target state information is closing, the in-place standard includes: the torque value is greater than a closing torque threshold and the rotation angle is within a closing angle threshold interval;

[0022] If the target state information is opening, the in-place standard includes: the torque value is greater than the opening torque threshold and the rotation angle is within the opening angle threshold interval;

[0023] If the target state information is grounding, the in-place standard includes: the torque value is greater than a grounding torque threshold and the rotation angle is within a grounding angle threshold interval.

[0024] In the second aspect, an embodiment of the present application provides a distribution network dispatching system, comprising: a distribution and dispatching device, a smart operating stick, and a smart terminal, the distribution and dispatching device and the smart terminal are communicatively connected, and the smart terminal and the smart operating stick are communicatively connected, for implementing the distribution switch equipment status monitoring method described in any one of the first aspects.

[0025] In a third aspect, an embodiment of the present application provides an intelligent operating stick, including: an operating handle, an intelligent operating stick device body, and a replaceable operating head assembly; used to implement the method of the intelligent operating stick side in the distribution switchgear state monitoring method described in any one of the first aspects;

[0026] Two insulating balls are connected at both ends of the operating handle via threads;

[0027] The operating handle is connected to the intelligent operating stick device body through one end of the connecting rod;

[0028] The other end of the connecting rod is connected to the replaceable operating head assembly.

[0029] In a possible implementation, the intelligent operation stick device body includes a torque sensor and a 6-axis gyroscope;

[0030] The torque sensor is used to detect torque changes during the operation of the smart operating stick;

[0031] The 6-axis gyroscope is used to detect the cumulative rotation angle of the smart operating stick during operation.

[0032] In a possible implementation, the smart operating stick device body further includes an identity component;

[0033] The identity component is used to authenticate and verify the location of the target device.

[0034] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the first aspect above and / or various possible implementations of the first aspect.

[0035] In a fifth aspect, an embodiment of the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the above first aspect and / or various possible implementation methods of the first aspect.

[0036] The distribution switchgear status monitoring method, system, device and storage medium provided in the embodiment of the present application, the intelligent terminal sends the pre-generated operation request to the intelligent operation stick, after the intelligent operation stick completes the authentication of the target device based on the operation request, the intelligent operation stick enters the waiting mode and sends the authentication completion information to the intelligent terminal, the intelligent terminal sends the operation sequence to the intelligent operation stick based on the authentication completion information, the intelligent operation stick operates based on the operation sequence, and transmits the operation information back to the dispatching device through the intelligent terminal, and the dispatching device updates the distribution network topology map based on the operation information. The above method realizes the leap from "manual blind adjustment" to "intelligent and precise control" in distribution network dispatching through anti-misoperation closed-loop control, real-time synchronization of map and reality, standardized process execution and intelligent operation and maintenance management, improves the automation coverage of distribution switches, and improves the accuracy and efficiency of dispatching decisions. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0038] Figure 1 Schematic diagram of the process of the distribution switch equipment status monitoring method provided in this application Figure 1 ;

[0039] Figure 2 Schematic diagram of the process of the distribution switch equipment status monitoring method provided in this application Figure 2 ;

[0040] Figure 3 Schematic diagram of the process of the distribution switch equipment status monitoring method provided in this application Figure 3 ;

[0041] Figure 4 Schematic diagram of the process of the distribution switch equipment status monitoring method provided in this application Figure 4 ;

[0042] Figure 5 The architecture diagram of the distribution network dispatching system provided for this application;

[0043] Figure 6 A schematic diagram of the operating handle provided for this application;

[0044] Figure 7 A schematic diagram of the structure of a replaceable operating head assembly provided in this application;

[0045] Figure 8 Schematic diagram of the torque sensor bridge provided for this application;

[0046] Fig. 9 The internal structure circuit diagram of the torque sensor provided for this application;

[0047] Fig.10 Schematic diagram of the 6-axis gyroscope structure provided in this application.

[0048] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0049] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0050] Distribution switch automation technology is an important part of modern power grid management. It uses sensors, communication technology and intelligent control algorithms to realize remote monitoring and automatic control of switchgear in distribution networks. Related technologies include remote terminal units (RTUs), smart meters, supervisory control and data acquisition systems (SCADA), and smart grid platforms based on cloud computing and big data. Together, these technologies form the cornerstone of distribution network automation management and provide strong support for the safe and efficient operation of power grids. Although distribution switch automation technology has made significant progress, there are still some shortcomings in practical applications. At present, many distribution network dispatching systems still face the problem of low automation coverage, resulting in most equipment still in a blind adjustment state. This means that dispatchers need to rely on manual positioning to convert equipment status, which is not only inefficient but also prone to operational errors. In addition, since the dispatching drawings are inconsistent with the actual situation on site, dispatchers may face the risk of inaccurate information when making decisions, which threatens the safe operation of the power grid.

[0051] In view of the above problems, the present application provides a distribution switch equipment status monitoring method, system, equipment and storage medium, which improves the distribution switch automation coverage rate and improves the accuracy and efficiency of dispatching decisions. Specifically, the low distribution switch automation coverage rate makes the distribution network dispatching only realize the status monitoring of some equipment. Most of the equipment in the distribution and dispatching management are still in a blind adjustment state. The equipment status can only be changed by manual setting of the dispatching. There are often situations such as forgetting to set, forgetting to restore or long-term delayed setting, and it is impossible to make the dispatching drawings consistent with the actual situation on site. Seriously endanger the safe operation of the power grid. In view of these problems, the inventor studied whether it is possible to develop an intelligent operation stick based on RFID electronic tags and coding libraries. The intelligent operation stick supports communication and interaction with the intelligent terminal. The intelligent operation stick operates in sequence according to the operation sequence issued by the intelligent terminal. After the operating device reaches the target state, the intelligent operation stick senses the state and returns the operation information to the intelligent terminal, effectively preventing on-site misoperation. At the same time, the quasi-real-time position information of related switches, knife switches and ground knives is uploaded to provide technical support for the equipment status monitoring of the distribution network dispatching. Based on this, the scheme of the present application is proposed.

[0052] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0053] Figure 1 Schematic diagram of the process of the distribution switch equipment status monitoring method provided in this application Figure 1 ,like Figure 1 As shown, the method is applied to a distribution network dispatching system, the distribution network dispatching system includes a dispatching device, an intelligent operation stick, and an intelligent terminal, the dispatching device is communicatively connected to the intelligent terminal, and the intelligent terminal is communicatively connected to the intelligent operation stick, then the method specifically includes:

[0054] S101: The smart terminal sends a pre-generated operation request to the smart operation stick.

[0055] In this step, in order to achieve accurate scheduling of the device, before operating the target device, the pre-generated operation request is sent to the smart operation stick through the smart terminal, wherein the operation request includes the code, location information and status information of the target device.

[0056] Specifically, the code of the target device is the unique identifier of the template device, which is bound to the RFID tag to ensure accurate matching of the operation object. The location information is the location of the template device, which can help users quickly find the template device. The status information is the current status of the target device, for example, whether the target device is currently closed, open or grounded.

[0057] Optionally, the operation request is sent to the smart operation stick using a communication protocol, such as MQTT over TLS, and transmitted through a private network APN or a power wireless private network to ensure low latency (<100ms) and high reliability. The national SM4 algorithm can also be used to encrypt the operation request content to prevent man-in-the-middle attacks. Alternatively, it can be sent to the smart operation stick wirelessly, wired, or via Bluetooth.

[0058] S102: After the smart operating stick completes authentication of the target device based on the operation request, the smart operating stick enters a standby mode and sends authentication completion information to the smart terminal.

[0059] In this step, after receiving the operation request, the smart operation stick verifies the target device based on the information in the operation request, and after the authentication is completed, generates authentication completion information and feeds it back to the smart terminal. At this time, the smart operation stick enters the standby mode.

[0060] Optionally, after completing the authentication of the target device, the smart operating stick automatically releases the mechanical lock and activates the sensor module to enter the standby mode.

[0061] S103: The smart terminal sends an operation sequence to the smart operating stick based on the authentication completion information.

[0062] In this step, after the smart terminal receives the authentication completion information sent by the smart operation stick, it means that the authentication of the target device is completed and the operation can be performed. Therefore, the smart terminal generates an operation sequence for the target device according to the scheduling task of the deployment device. The operation sequence includes the operation parameters and target status information of the target device.

[0063] Specifically, the scheduling task sent by the dispatching device received by the smart terminal includes the target device to be operated, which can be one target device or multiple target devices. However, for precise operation, the operations are usually performed one device at a time in sequence. After the smart operation stick completes the authentication of the target device, the smart terminal device generates an operation sequence based on the scheduling task and sends it to the smart operation stick.

[0064] S104: The smart operating stick operates based on the operation sequence and transmits the operation information back to the dispensing device through the smart terminal.

[0065] In this step, after receiving the operation sequence sent by the smart terminal, the smart operating stick performs equipment operation based on the operation sequence, and sends the operation information back to the smart terminal after the operation is completed. The smart terminal displays the operation information on the interface, and after manual inspection, the operation information is sent back to the dispensing equipment.

[0066] Specifically, the intelligent operating stick controls the torque sensor and the gyroscope to work according to the operating parameters, generates a torque value and a rotation angle, and determines whether the operation is completed based on the torque value, the rotation angle, the target state information, and the pre-set in-place standard.

[0067] For example, the dispatching equipment issues a dispatching task: "Disconnect switch No. 1 of ring main unit A and close switch No. 2". After receiving the task, the handheld smart terminal generates a specific operation sequence:

[0068] Step 1: Operate the device code SW-A-1, the target state is "open", the torque threshold is 120N·m, and the rotation angle range is 270°±5°.

[0069] Step 2: Operate the device code ES-A-2, the target state is "CLOSE", the torque threshold is 80N·m, and the rotation angle range is 90°±3°.

[0070] After the smart operating stick completes the authentication of the device coded SW-A-1, the smart terminal sends the operation sequence of the device to the smart operating stick. The operation sequence includes the target state of "open", the torque threshold of 120N·m, and the rotation angle range of 270°±5°. Then the smart operating stick operates according to the operation sequence. After the operation is completed, the smart terminal device receives the operation information sent back by the smart operating stick and continues to instruct the smart operating stick to authenticate the device in step 2. After the authentication is completed, continue the above operation to instruct the smart operating stick to operate until the dispatching device sends the dispatching task. The smart terminal will return the operation information corresponding to the dispatching task to the dispatching device.

[0071] S105: The dispatching device updates the distribution network topology map based on the operation information.

[0072] In this step, after receiving the returned operation information, the dispatching device updates the distribution network topology map based on the operation information.

[0073] Optionally, the smart operation stick sends data to the smart terminal via Bluetooth / LoRa. The smart terminal uploads the data to the dispatching equipment via 4G / 5G or the power private network.

[0074] After receiving the returned operation information, the distribution network equipment checks whether the equipment exists and matches the current task. Verify whether the operation complies with the grid safety rules (for example, the upper switch must be disconnected before closing the ground switch). Confirm that the operation time is within the scheduling window (for example, unplanned power outages are not allowed). Digital signatures (such as the SM2 algorithm) can also be used to verify data integrity and operator identity.

[0075] If an attempt is made to close a ground switch that has not been disconnected from the upper switch, the system will refuse to update the topology map and send an alarm to the handheld terminal: "Illegal operation: Ground switch closing conditions are not met."

[0076] After the verification is completed, the dispatching device updates the database, for example, updates the target device status from "closed" (CLOSE) to "open" (OPEN), and records the operation log.

[0077] Exemplarily, based on the grid connection relationship, the system automatically analyzes the affected areas:

[0078] Open switch SW-01-A → Downstream line (such as line L1) is de-energized. Use breadth-first search (BFS) to mark all devices directly or indirectly connected to SW-01-A as "de-energized area".

[0079] Downstream equipment: transformer T1, load nodes N1~N5.

[0080] Power supply path: The original path is "power supply → SW-01-A → L1 → T1 → N1~N5". The path is interrupted after disconnection.

[0081] If the operation causes the power flow to change, the system triggers the power flow calculation engine to update parameters such as voltage and current to prevent overload.

[0082] Topology map dynamic update:

[0083] Icon Change: The icon of SW-01-A changes from a green closed state to a red open state and displays a lightning symbol.

[0084] Area marking: The downstream line L1 and the connected equipment (T1, N1~N5) are displayed in gray shadow and marked as "power outage area".

[0085] Topological wiring: The L1 line changes from a solid line (powered on) to a dashed line (powered off).

[0086] A prompt pops up on the dispatch interface: "SW-01-A has been disconnected, and 5 downstream load nodes have lost power."

[0087] Automatically generate a recovery plan: The system recommends closing the tie switch SW-TIE-02 to transfer the load to the backup power source.

[0088] Voice announcement: The dispatch room announced, "Please note that the L1 line has lost power and a power transfer plan needs to be initiated."

[0089] If the switch SW-01-A of the ring main unit A trips due to a fault, the intelligent operating stick performs the opening operation, the system updates the topology map and guides the restoration of power supply.

[0090] Detailed process:

[0091] Operation execution: The smart operation stick disconnects SW-01-A and returns data after verification.

[0092] Topology Update:

[0093] The SW-01-A icon turns red and the downstream line L1 is marked as outage.

[0094] The system detects that the tie switch SW-TIE-02 is in the open state and automatically calculates the power transfer path.

[0095] Restoring power:

[0096] The dispatcher clicks the "Close" button of SW-TIE-02 and sends instructions to the smart operating stick.

[0097] The smart operating stick closes SW-TIE-02, and the topology map is updated: L1 resumes power supply, and the gray area turns to normal color.

[0098] Log records: All operation records are stored in the database, including failure time, recovery measures and operator information.

[0099] The distribution switch equipment status monitoring method provided in the embodiment of the present application is that the intelligent terminal sends the pre-generated operation request to the intelligent operation stick. After the intelligent operation stick completes the authentication of the target device based on the operation request, the intelligent operation stick enters the waiting mode and sends the authentication completion information to the intelligent terminal. The intelligent terminal sends the operation sequence to the intelligent operation stick based on the authentication completion information. The intelligent operation stick operates based on the operation sequence and transmits the operation information back to the dispatching equipment through the intelligent terminal. The dispatching equipment updates the distribution network topology map based on the operation information. The above method realizes the leap from "manual blind adjustment" to "intelligent and precise control" in distribution network dispatching through anti-misoperation closed-loop control, real-time synchronization of graph and reality, standardized process execution and intelligent operation and maintenance management, improves the automation coverage of distribution switches, and improves the accuracy and efficiency of dispatching decisions.

[0100] Figure 2 Schematic diagram of the process of the distribution switch equipment status monitoring method provided in this application Figure 2 ,like Figure 2 As shown, based on the above embodiment, the method further includes:

[0101] S201: The smart operating stick performs identity authentication on the target device based on the code and status information of the target device.

[0102] S202: The smart operating stick performs location authentication on the target device based on the location information of the target device.

[0103] Each target device (such as a switch or ground knife) has a unique RFID tag built in, which stores the device code (such as SW-01-A-2023) and is synchronized with the code library of the dispatching device. The code library records information such as device type, specifications, and historical operation records. After the smart operation stick receives the operation sequence sent by the smart terminal, it scans the target device and reads the code in the tag through the RFID reader / writer module. The smart operation stick compares the read code with the target code issued by the task, and passes if they are consistent.

[0104] Optionally, if the device code is not in the task list or code library, the operating stick triggers an alarm (such as flashing red light, vibration), and locks the operating authority.

[0105] For example, the operation task requires disconnecting switch SW-01-A, but the adjacent switch SW-01-B is mistakenly scanned on site. If the code comparison fails, the smart operation stick is locked and prompts "device does not match" to prevent misoperation.

[0106] When the target device is installed, its latitude and longitude coordinates (such as 30.123°N, 120.456°E) are recorded through surveying and stored in the main station GIS system. The smart operation stick has a built-in GPS / Beidou dual-mode positioning module to obtain the current position in real time (accuracy ±1~5 meters). Indoors or in blocked areas, switch to Bluetooth beacon or UWB positioning (accuracy ±0.1 meter). The smart operation stick compares the real-time positioning coordinates with the preset coordinates of the target device, allowing an error range (such as ±10 meters). If it exceeds the range, it is determined to be an abnormal position. Combined with the device topology, verify whether the current position conforms to the operation logic (for example: the ground knife position should be located downstream of the switch).

[0107] Optionally, if the GPS signal is weak, the stick can assist in positioning via Bluetooth beacons or visual recognition (such as QR codes).

[0108] In the power distribution switchgear state monitoring method provided in the embodiment of the present application, the smart operating stick performs identity authentication on the target device based on the coding and state information of the target device, and the smart operating stick performs location authentication on the target device based on the location information of the target device. The above method realizes accurate prevention of misoperation, eliminates confusion of equipment, and improves the dispatching efficiency.

[0109] Figure 3 Schematic diagram of the process of the distribution switch equipment status monitoring method provided in this application Figure 3 ,like Figure 3 As shown, based on the above embodiment, the method further includes:

[0110] S301: In response to a user operation, the dispatching device generates a scheduling task and sends the scheduling task to the smart terminal.

[0111] S302: The intelligent terminal generates an operation request corresponding to each target device and an operation sequence corresponding to each target device based on the scheduling task.

[0112] The dispatcher performs operations (such as planned power outage and fault isolation) on the dispatching equipment interface to trigger the generation of dispatching tasks. For example, the dispatcher selects the "Planned Power Outage" function and specifies the target area as "Ring Main Unit A". The dispatching equipment analyzes the equipment connection relationship in the target area based on the power grid topology model. For example, the ring main unit A contains switch SW-01-A and ground switch ES-01-B. The dispatching equipment confirms the logical relationship between the switch and the ground switch (for example, the ground switch can only be closed after the switch is disconnected). The dispatching equipment verifies whether the operation complies with the "five-prevention" logic. For example, if the switch SW-01-A is not disconnected, the ground switch ES-01-B is prohibited from being closed. The dispatching equipment encapsulates information such as operation steps, equipment list, and target status into dispatching tasks. For example, a task is generated: "Disconnect SW-01-A and close ES-01-B". The dispatching equipment sends the task to the smart terminal of the on-site operation and maintenance personnel through a power-specific protocol (such as IEC 60870-5-104) or a general protocol (such as MQTT over TLS).

[0113] Optionally, the dispatching equipment can use the national secret SM4 algorithm to encrypt the task data to ensure transmission security. After receiving the task, the intelligent terminal verifies the digital signature (SM2) and the timeliness of the task. For example, the terminal checks whether the task is within the validity period (for example, the current time is 14:30, the task is valid). The task is stored in the local database of the terminal and supports offline mode. For example, in a mountainous area with no signal, the terminal can still load the task.

[0114] The intelligent terminal generates an operation request for each target device based on the scheduled task. For example:

[0115] Device code binding: Obtain the unique identifier of the target device (such as SW-01-A-2023) from the device code library.

[0116] Parameter adaptation: Set operating parameters based on equipment type and historical data (e.g. lower the torque threshold of old equipment by 10%).

[0117] Safety check: Verify whether the operation request meets the scheduling task requirements (such as prohibiting closing a live switch).

[0118] The state monitoring method of the power distribution switchgear provided in the embodiment of the present application, in response to the user operation, the dispatching device generates a scheduling task, and sends the scheduling task to the intelligent terminal, and the intelligent terminal generates an operation request corresponding to each target device and an operation sequence corresponding to each target device based on the scheduling task. The above method improves the scheduling efficiency and improves the ability to prevent misoperation.

[0119] Figure 4Schematic diagram of the process of the distribution switch equipment status monitoring method provided in this application Figure 4 ,like Figure 4 As shown, based on the above embodiment, step S104 specifically includes:

[0120] S401: The intelligent operating stick controls the torque sensor and the gyroscope to work according to the operating parameters to generate a torque value and a rotation angle.

[0121] S402: The intelligent operating stick determines that the operation is completed based on the torque value, the rotation angle, the target state information, and the pre-set in-place standard.

[0122] After receiving the operation sequence sent by the smart terminal, the smart operation stick controls the sensor to work based on the operation parameters and target state information in the operation sequence, wherein the sensor includes a torque sensor and a gyroscope.

[0123] The smart operating stick replaces the operating head that is adapted to the target device, inserts it into the operating hole and triggers the mechanical lock. The operation and maintenance personnel shake the operating stick according to the standard action, and the torque sensor and gyroscope start working. When the operating stick is shaken, the strain gauge bridge detects the torque change and outputs a voltage signal proportional to the torque (such as 1.7mV / V). The signal is amplified by an amplifier (such as INA-826) and converted into a torque value (such as 115N·m). The gyroscope records the cumulative rotation angle (such as 268°) and posture (such as tilt angle 5°) of the operating stick. If the posture is abnormal (such as tilt angle >10°), an alarm is triggered to prompt that the operation is not standardized. The real-time torque curve must match the preset standard curve (such as the "peak mode" that rises first and then falls) by ≥95%. The cumulative rotation angle must be within the preset range (such as 265°~275°). The device state after operation must be consistent with the target state (such as "open" or "closed").

[0124] If the torque and angle data meet the in-place standard, it will be marked as "operation successful". If the torque exceeds the standard (such as 130N·m), the overload protection will be triggered, the operation will be stopped immediately and an alarm will be issued. If the angle does not meet the standard (such as 260°), it will be prompted as "not in place" and you will be required to re-operate.

[0125] Optionally, if the target state information is closing, the in-place standard includes: the torque value is greater than the closing torque threshold and the rotation angle is within the closing angle threshold interval;

[0126] If the target state information is opening, the in-place standard includes: the torque value is greater than the opening torque threshold and the rotation angle is within the opening angle threshold range;

[0127] If the target state information is grounding, the in-place standard includes: the torque value is greater than the grounding torque threshold and the rotation angle is within the grounding angle threshold interval.

[0128] It should be noted that the above-mentioned in-place standard can be set according to the actual situation of the target device, and the embodiments of the present application do not make any specific limitation.

[0129] The distribution switchgear status monitoring method provided in the embodiment of the present application, the intelligent operating stick controls the torque sensor and the gyroscope according to the operating parameters to generate the torque value and the rotation angle. The intelligent operating stick determines the completion of the operation based on the torque value, the rotation angle and the target state information and the pre-set in-place standard. The above method realizes the precise control and in-place judgment of the equipment operation through the dual verification of the torque sensor and the 6-axis gyroscope, and solves the problems of reliance on experience, large errors and low efficiency in traditional manual operation. This solution improves the accuracy, safety and efficiency of distribution network equipment operation to a new level, and provides core technical support for the digital transformation of smart grids.

[0130] Figure 5 The architecture diagram of the distribution network dispatching system provided for this application is as follows: Figure 5 As shown, the system includes a dispensing device, an intelligent operation stick, and an intelligent terminal, wherein the dispensing device and the intelligent terminal are in communication connection, and the intelligent terminal and the intelligent operation stick are in communication connection. Figure 5 The central dispatching SCADA system and the multi-dimensional operation feedback system are collectively referred to as the dispatching equipment, which can also be called the distribution network dispatching background master station system.

[0131] Among them, the dispatching equipment and smart terminals are connected through a wide area network (such as 4G / 5G or a dedicated power network) to support remote task issuance and status feedback.

[0132] Smart terminal and smart operation stick: connected through near-field communication (such as Bluetooth or Wi-Fi Direct), supporting on-site operation command transmission and data interaction.

[0133] For example, deployment equipment → intelligent terminal:

[0134] Protocol: Use power-specific protocols (such as IEC 60870-5-104) or general protocols (such as MQTT over TLS).

[0135] Channel: Ensure the security and reliability of data transmission through APN private network or VPN tunnel.

[0136] Smart terminal → Smart operation stick:

[0137] Protocol: Uses low-power Bluetooth (BLE 5.0) or Wi-Fi Direct, supporting high bandwidth and low latency.

[0138] Channel: point-to-point direct connection to avoid interference from intermediate nodes.

[0139] The communication process between the dispatching equipment and the intelligent terminal includes:

[0140] Task distribution:

[0141] Task generation: The dispatching device generates scheduling tasks based on user operations (such as "disconnect switch SW-01-A").

[0142] Encrypted transmission: Use national encryption SM4 to encrypt task data and verify identity through digital signature (SM2).

[0143] Terminal reception: After receiving the task, the intelligent terminal verifies the signature and task timeliness, and caches it in the local database.

[0144] Status return:

[0145] Data packaging: The intelligent terminal encrypts the operation results (such as "switch SW-01-A is opened successfully") and then uploads them.

[0146] Master station processing: After the dispatching device receives the data, it updates the topology map and records the operation log.

[0147] Communication process between smart terminal and smart operation stick:

[0148] Instructions issued:

[0149] Operation sequence generation: The intelligent terminal generates an operation sequence based on the scheduling task (such as "Step 1: Disconnect switch SW-01-A").

[0150] Encrypted transmission: Use AES-256 to encrypt command data and verify integrity through CRC32.

[0151] Operation stick reception: After receiving the command, the smart operation stick verifies the data and returns a confirmation signal (ACK).

[0152] Data return:

[0153] Operation result generation: After the smart operation stick completes the operation, the result data (such as "torque 115N·m, angle 268°") is generated.

[0154] Encrypted transmission: The result data is encrypted using AES-256 and the integrity is verified using CRC32.

[0155] Terminal reception: After receiving the data, the intelligent terminal verifies and displays the operation results.

[0156] The embodiment of the present application also provides an intelligent operating stick, including an operating handle, an intelligent operating stick device body and a replaceable operating head assembly. Figure 6The operating handle diagram provided for this application shows that the smart operating stick contains three unit components, namely the smart operating stick device body, the operating head assembly and the operating handle. The operating handle is based on the pure mechanical operating stick used on site and is required to conform to the usage habits of on-site operation and maintenance personnel. Figure 6 As shown, two insulating balls are connected at both ends of the operating handle by threads, the operating handle is connected to the intelligent operating rod device body through one end of the connecting rod, and the other end of the connecting rod is connected to the replaceable operating head assembly.

[0157] Figure 7 A schematic diagram of the replaceable operating head assembly structure provided in this application, such as Figure 7 As shown in the figure, in order to improve the overall versatility to a greater extent, the operating head assembly is designed to be detachable. Before operating different equipment, the operator should first replace the operating head to be used. At the same time, an operating head assembly is compatible with the equipment operating holes of different types of ring network cabinets as much as possible.

[0158] Optionally, the smart operating stick device body includes a torque sensor and a 6-axis gyroscope, wherein the torque sensor is used to detect torque changes during the operation of the smart operating stick; and the 6-axis gyroscope is used to detect the cumulative rotation angle during the operation of the smart operating stick.

[0159] The core function of the intelligent operating stick is the torque sensor detection technology, which is mainly used to detect the torque changes during the operation of switches and grounding switches, etc., as a basis for analyzing whether the equipment is properly operated. The torque sensor is a resistance strain gauge structure with an internal bridge. Figure 8 Schematic diagram of the torque sensor bridge provided for this application, Fig. 9 The internal structure circuit diagram of the torque sensor provided for this application is as follows: Figure 8 As shown, U i is the excitation voltage (power supply), U 0 is the output voltage. When no torque is detected, the bridge is in a balanced state, U 0 When there is a positive or reverse torque, the resistor will deform slightly, U 0 Outputs a positive or negative voltage that is linearly related to the torque.

[0160] For example, the maximum torque sensor that can be used is 150N.M, and the full-scale output voltage is 1.7mV / V. The sensor output voltage is a differential voltage that can be positive or negative, and needs to be amplified by a suitable amplifier. The smart operating stick uses TI's INA-826, which has the following performance advantages: ① variable gain; ② small temperature drift and zero drift; ③ small noise coefficient and low static power consumption. Its internal structure is as follows Fig. 9 shown.

[0161] In addition to torque sensor detection, in order to improve the reliability of operation process detection, without changing the original operating habits, the smart operating stick also adds a function for detecting the cumulative rotation angle during the entire operation process after unlocking and inserting the operating stick into the latch, which also serves as a basis for analyzing whether the equipment operation is in place.

[0162] Based on the data collected from on-site inspections and surveys, it is known that the switch pins that need to be operated are parallel to the ground, that is, when the handle turns the switch, it will rotate perpendicular to the ground. The smart operating stick uses a 6-axis gyroscope (3-axis acceleration + 3-axis gyroscope) detection technology to detect the rotation angle.

[0163] For example, the 6-axis gyroscope uses the MPU-6500. Fig.10 The schematic diagram of the 6-axis gyroscope structure provided for this application is as follows: Fig.10 As shown, ① Digital output X, Y and Z axis angular rate sensors (gyroscopes), with user-programmable full-scale ranges of ±250, ±500, ±1000 and ±2000° / sec, and integrated 16-bit ADC;

[0164] ②Digital output X, Y and Z axis accelerometers with ±2g, ±4g, ±8g and ±16g programmable full-scale ranges and integrated 16-bit ADC.

[0165] ③Internal digital motion processing (DMP) engine supports advanced motion processing and low-power features such as gesture recognition using programmable interrupts;

[0166] ④In addition to angular rate, the device can also optionally output angular position (angle).

[0167] The smart operating stick integrates torque sensor + 6-axis gyroscope detection, and adopts double verification to check whether the equipment's opening and closing operations are in place. At the same time, it refers to the maximum force allowed by manual operation of GB 1985-2014 High-voltage AC disconnectors and earthing switches as the detection parameter of the smart operating stick, draws a unique torque curve when the switch is opened, closed, and grounded, and then formulates the in-place standard based on the curve.

[0168] Optionally, the design of the intelligent operating stick device fully studies the balance between performance, volume, weight, and power consumption. Combined with actual operation scenarios and functional analysis, the core components such as charging, voice, and sensors are compactly arranged, and the integrated design of locking components, communication components, and operating heads is integrated to achieve the miniaturization and light weight of the device, which can meet the operation of multiple types of ring network cabinets and multiple types of switch / grounding knife switch operating holes. At the same time, the use of advanced low-power chip technology, intelligent sleep mechanism, and intelligent charging and discharging management strategy has achieved efficient operation of the device in a low-power state. Combined with the differences in the types of ring network cabinets on site, the operating holes of different equipment are different. If a corresponding operating head is designed for each operating hole one by one, the overall weight and volume are large, which is not suitable for operators to carry. Therefore, a replaceable operating head assembly is designed.

[0169] The present application also provides a computer program product, including a computer program, which implements the above method when executed by a processor.

[0170] The present application also provides a computer-readable storage medium, in which computer-executable instructions are stored. When a processor executes the computer-executable instructions, the above method is implemented.

[0171] The above-mentioned readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk. The readable storage medium can be any available medium that can be accessed by a general or special-purpose computer.

[0172] An exemplary readable storage medium is coupled to a processor so that the processor can read information from the readable storage medium and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can be located in an application specific integrated circuit (Application Specific Integrated Circuits, referred to as: ASIC). Of course, the processor and the readable storage medium can also exist in the device as discrete components.

[0173] The division of units is only a logical function division, and there may be other divisions in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interface, device or unit, which can be electrical, mechanical or other forms.

[0174] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0175] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0176] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0177] Those skilled in the art can understand that all or part of the steps of implementing the above-mentioned method embodiments can be completed by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the steps of the above-mentioned method embodiments are executed; and the aforementioned storage medium includes: ROM, RAM, disk or optical disk and other media that can store program codes.

[0178] Finally, it should be noted that those skilled in the art will readily conceive of other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses or adaptations of the present invention, which follow the general principles of the present invention and include common knowledge or customary technical means in the art not disclosed by the present invention, are not limited to the precise structure described above and shown in the drawings, and may be modified and changed in various ways without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A method for monitoring the state of a power distribution switch device, characterized in that: Applied to a distribution network dispatching system, the distribution network dispatching system includes a dispatching device, an intelligent operation stick, and an intelligent terminal, the dispatching device is communicatively connected to the intelligent terminal, and the intelligent terminal is communicatively connected to the intelligent operation stick; the method includes: The smart terminal sends a pre-generated operation request to the smart operation stick, wherein the operation request includes a code, location information, and status information of the target device; After the smart operation stick completes authentication of the target device based on the operation request, the smart operation stick enters a standby mode and sends authentication completion information to the smart terminal; The smart terminal sends an operation sequence to the smart operation stick based on the authentication completion information, wherein the operation sequence includes the operation parameters and target state information of the target device; The smart operating stick operates based on the operation sequence and transmits the operation information back to the blending device through the smart terminal; The deployment device updates the distribution network topology map based on the operation information.

2. The method according to claim 1, characterized in that The method further comprises: The smart operation stick performs identity authentication on the target device based on the code of the target device and the status information; The smart operation stick performs location authentication on the target device based on the location information of the target device.

3. The method according to claim 1, characterized in that The method further comprises: In response to a user operation, the dispatching device generates a scheduling task and sends the scheduling task to the intelligent terminal, wherein the scheduling task includes a code of at least one target device, target state information of each target device, and an operation sequence; The intelligent terminal generates an operation request corresponding to each target device and an operation sequence corresponding to each target device based on the scheduling task.

4. The method according to claim 1, characterized in that: The intelligent operation stick operates based on the operation sequence, including: The intelligent operating stick controls the torque sensor and the gyroscope to work according to the operating parameters to generate a torque value and a rotation angle; The smart operating stick determines that the operation is completed based on the torque value, the rotation angle, the target state information, and a preset in-place standard.

5. The method according to claim 4, characterized in that If the target state information is closing, the in-place standard includes: the torque value is greater than the closing torque threshold and the rotation angle is within the closing angle threshold interval; If the target state information is opening, the in-place standard includes: the torque value is greater than the opening torque threshold and the rotation angle is within the opening angle threshold interval; If the target state information is grounding, the in-place standard includes: the torque value is greater than a grounding torque threshold and the rotation angle is within a grounding angle threshold interval.

6. A distribution network dispatching system, characterized in that: include: It includes a distribution device, an intelligent operating stick, and a smart terminal. The distribution device and the smart terminal are communicatively connected, and the smart terminal and the smart operating stick are communicatively connected, and are used to implement the distribution switch equipment status monitoring method as described in any one of claims 1 to 5.

7. A smart operating stick, characterized in that: include: Operating handle, intelligent operating rod device body and replaceable operating head assembly; A method for implementing the intelligent operating rod side of the distribution switchgear state monitoring method according to any one of claims 1 to 5; Two insulating balls are connected at both ends of the operating handle via threads; The operating handle is connected to the intelligent operating stick device body through one end of the connecting rod; The other end of the connecting rod is connected to the replaceable operating head assembly.

8. The intelligent operating stick according to claim 7, characterized in that: The intelligent operation stick device body includes a torque sensor and a 6-axis gyroscope; The torque sensor is used to detect torque changes during the operation of the smart operating stick; The 6-axis gyroscope is used to detect the cumulative rotation angle of the smart operating stick during operation.

9. The intelligent operating stick according to claim 7, characterized in that: The smart operation stick device body also includes an identity component; The identity component is used to authenticate and verify the location of the target device.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the distribution switchgear status monitoring method according to any one of claims 1 to 5.

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