Intelligent remote control device and method for secondary equipment of transformer substation

Abstract

The invention relates to the field of substations, in particular to an intelligent remote control device and method for substation secondary equipment. Comprising a control box matched with the existing switch equipment, and the control box is installed between the switch equipment and a screen panel; the micro motor is arranged in the control box and is used for providing operation kinetic energy and driving a rotating shaft of the switch equipment to rotate to a preset position; the intelligent sensing module is arranged in the control box and is used for detecting the gear state of the switch equipment to obtain a state feedback signal; the control unit is arranged in the control box, the control unit is connected with the micro motor and the intelligent sensing module, and the control unit is used for receiving a remote control command, controlling the micro motor to operate the switch equipment according to the remote control command and receiving a state feedback signal of the intelligent sensing module at the same time; the communication module is connected with the control unit and used for enabling the control unit to communicate with a remote control system. According to the invention, the remote control operation is efficient, the operation risk is low, the state monitoring is accurate, and the adaptability with existing equipment is high.

Description

Technical Field

[0001] The present invention relates to the field of substations, and in particular to an intelligent remote control device and method for secondary equipment of a substation. Background Art

[0002] In traditional substations, remote control of secondary equipment is a complex and challenging task. Usually, these devices rely on manual on-site operation or basic automation systems, which often have problems such as low efficiency, long response time, and high misoperation rate. Especially for switchgear in substations, such as KK handle switches, it is usually necessary for staff to go to the site for manual operation, which not only increases the operation and maintenance costs, but also increases the operation risks. With the continuous improvement of the automation level of power systems, the demand for intelligent and remote control of substation secondary equipment is growing.

[0003] Existing remote control systems mostly use wired or wireless communication technologies, but these technologies have many limitations in practical applications. For example, wired communication wiring is complex, costly, and has poor scalability; wireless communication may be subject to signal interference and difficult to ensure security. In addition, secondary devices in existing technologies often lack effective status feedback and abnormality monitoring mechanisms when performing remote control, making it difficult to ensure the reliability and safety of remote operations.

[0004] In response to the above problems, although there have been some attempts at intelligent remote control devices, such as patent CN114999135A, which discloses a pressure plate remote control device and remote control method, including a processing module and a driving component, etc., which can realize remote control and status judgment of the pressure plate. However, this technology has limitations in communication capabilities, compatibility with existing equipment, intelligent sensing capabilities, and self-test and abnormality handling capabilities. Patent CN1 15377804A provides a remote control pressure plate and a control method thereof, which includes a pressure plate body, an integrated control module, etc., and a voltage detection module is used to measure the voltage of the pressure plate to achieve unmanned remote control operation. Although this technology has made certain progress in voltage detection and remote control operation, there is still room for improvement in realizing the communication of large-scale substation equipment and accurate detection of the status of switch equipment. Therefore, there is an urgent need for an intelligent remote control device and method for substation secondary equipment. Summary of the invention

[0005] The purpose of the present invention is to provide an intelligent remote control device and method for substation secondary equipment to solve the problems of low efficiency, high operation risk, inaccurate status monitoring and poor compatibility with existing equipment when implementing remote control operation of existing substation secondary equipment.

[0006] To achieve the above purpose, the following technical solution is adopted.

[0007] An intelligent remote control device for secondary equipment of a substation, comprising:

[0008] A control box adapted to an existing switchgear, the control box being installed between the switchgear and the screen panel;

[0009] A micro motor is arranged in the control box, and is used to provide operating kinetic energy and drive the rotating shaft of the switch device to rotate to a predetermined position; an intelligent sensor module is arranged in the control box, and is used to detect the gear state of the switch device and obtain a state feedback signal; a control unit is arranged in the control box, and the control unit is connected to the micro motor and the intelligent sensor module. The control unit is used to receive a remote control command, and control the micro motor to operate the switch device according to the remote control command, and at the same time receive the state feedback signal of the intelligent sensor module; a communication module is connected to the control unit, and is used to enable the control unit to communicate with the remote control system.

[0010] Optionally, the control box is provided with input terminals and output terminals, and the communication module performs 485 communication through the input terminals and output terminals. The input terminal is connected to the 485 signal and the 24V power supply, and the output terminal is used to connect to the input end of another control box.

[0011] Optionally, the switch device includes a knob and a travel switch, the control box is installed between the knob and the travel switch, and the travel switch is arranged in the screen panel;

[0012] The first side surface and the opposite second side surface of the control box are respectively provided with a plurality of mounting holes, a control shaft is provided in the middle of the first side surface of the control box, the control shaft is connected to the micro motor through a transmission mechanism, the control shaft is used to connect the knob of the switch device, and a shaft hole is provided in the middle of the second side surface of the control box, for the shaft of the travel switch to pass through and connect to the control shaft.

[0013] Optionally, the intelligent sensing module includes a first state monitoring module and a second state detection module, and the first state monitoring module and the second state detection module are used to detect the switching device through different detection methods. The first state monitoring module obtains a first state feedback signal and sends it to the control unit, and the second state monitoring module obtains a second state feedback signal and sends it to the control unit.

[0014] Optionally, the control unit also includes a self-test module, which is connected to the communication module and the intelligent sensing module. The self-test module is used to receive remote control commands and status feedback signals to determine whether the remote control operation is completed, and if not, to send an abnormal alarm signal to the communication module.

[0015] Optionally, there are multiple control boxes, which are installed on different switch devices respectively. The multiple control boxes are electrically connected to the communication management machine, and the communication management machine is connected to the sequential control host. The sequential control host is used to control all switch devices. When a certain switch device needs to be opened, a remote control command corresponding to the control box is sent to the communication management machine; the communication management machine is used to send the remote control command to the corresponding control box.

[0016] A method for intelligent remote control of secondary equipment in a substation, comprising the following steps:

[0017] S1. The control unit of the control box receives the remote control command and controls the first state detection module and the second state detection module to detect the state of the switch device;

[0018] S2, the control unit receives the first state feedback signal after the first state detection module completes the detection, receives the second state feedback signal after the second state detection module completes the detection, performs logical judgment, and judges the current state of the switch device when the first state feedback signal and the second state feedback signal are consistent. If they are inconsistent, it is judged to be abnormal, and the control unit sends an abnormal alarm signal through the communication module;

[0019] S3. When the current state of the switch device determined by the control unit for the first time is inconsistent with the predetermined position set by the remote control command, the control unit drives the micro motor to rotate the control shaft through the transmission mechanism, and drives the switch device to rotate to the predetermined position, and returns to step S2; when the current state of the switch device determined by the control unit again is inconsistent with the predetermined position set by the remote control command, the control unit sends an abnormal alarm signal through the communication module; when the current state of the switch device determined by the control unit is consistent with the predetermined position set by the remote control command, the current state of the switch device is fed back through the communication module.

[0020] Optionally, the following steps are also included:

[0021] Receive remote control commands from the sequential control host through the communication management machine;

[0022] The communication management machine analyzes the remote control command and forwards the remote control command to the corresponding control box as needed;

[0023] The sequential control host receives the status feedback signal and abnormal alarm signal sent by the control box, and displays them through the human-computer interaction platform. If an abnormal alarm signal is received, a preset abnormality handling program is started.

[0024] Optionally, the following steps are also included, using the Modbus protocol to communicate between the sequential control host and the multiple control boxes, specifically including:

[0025] The sequential control host initiates a communication request in Modbus RTU mode through the RS-485 interface, and the communication request includes a specific address for selecting the control box;

[0026] The selected control box responds to the request of the sequential control host, returns the status information of the control box or performs the operation requested by the sequential control host;

[0027] CRC check is used during the communication process to ensure the accuracy of data transmission, and the composition of the data frame follows the format specified by the Modbus protocol;

[0028] Different operation requests are distinguished by function codes, including reading the control box status, executing switch device remote control operations, and querying the control box node address;

[0029] The sequential control host uses the broadcast address 0xFF to perform write operations during the communication process, and sends unified instructions to all the control boxes.

[0030] Optionally, further including:

[0031] Before establishing a communication connection between the sequential control host and the control box, configure the physical layer and data link layer to ensure consistency of communication parameters;

[0032] The control host controls the control box point-to-point or group through the unicast and broadcast modes of the Modbus protocol;

[0033] In remote control operation, the sequential control host controls the specific output of the control box by sending specific function codes and register addresses;

[0034] The sequential control host queries the node address of the control box through the Modbus protocol to identify and address the switch device;

[0035] During the debugging process, the debugging software is used to communicate with the control box, configure the control box parameters and monitor the status of the switchgear.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] The present invention provides a remote control solution with simple structure, strong adaptability, reliable communication and accurate intelligent sensing. The device can be easily installed between the switch device and the screen panel by adapting to the control box of the existing switch device, without large-scale modification of the existing equipment, greatly reducing the workload and cost of installation and modification.

[0038] The micro motor of the present invention can provide stable operating kinetic energy, accurately drive the rotating shaft of the switch device to rotate to a predetermined position, and realize precise control of the switch device. The intelligent sensor module can detect the gear status of the switch device in real time, and feedback the status signal through the control unit, providing accurate device status information for remote control.

[0039] The design of the control unit of the present invention integrates a self-check module, which can automatically perform self-checks to ensure that the control box is in an operable state, and promptly issues an alarm signal when an abnormal situation is detected, thereby improving the safety and reliability of the system. The communication module utilizes the existing 485 communication technology to achieve stable communication with the remote control system. At the same time, through the application of the Modbus protocol, the accuracy and efficiency of communication are further improved.

[0040] The present invention reduces or eliminates the need for on-site manual operation through an automated remote control device, thereby improving the control efficiency of the secondary equipment of the substation. Through intelligent remote control, the safety risks caused by on-site operation, including electric shock to personnel, misoperation, etc., are reduced. A high-precision intelligent sensor module is used to achieve real-time monitoring and accurate feedback of the status of the switchgear to ensure the reliability of remote control. An easy-to-install control box is designed to adapt to existing switchgear, and intelligent upgrades can be achieved without large-scale transformation. Through the self-check module and abnormal alarm mechanism, the system's self-diagnosis and problem response capabilities are improved to ensure that timely measures can be taken when abnormalities occur. RS-485 communication and Modbus protocol are used to ensure the stability of communication and the security of data transmission, meeting the communication requirements of large-scale substation equipment. Through debugging software and remote upgrade functions, it is convenient for maintenance personnel to configure equipment parameters and upgrade software, thereby improving maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic diagram of the combined structure of an embodiment of an intelligent remote control device for secondary equipment of a substation according to the present invention;

[0042] Figure 2 It is a structural schematic diagram of a first-view after separation of an embodiment of an intelligent remote control device for secondary equipment of a substation according to the present invention;

[0043] Figure 3 It is a structural schematic diagram of a second viewing angle after separation of an embodiment of an intelligent remote control device for secondary equipment of a substation according to the present invention;

[0044] Figure 4 It is a module schematic diagram of an embodiment of an intelligent remote control device for secondary equipment of a substation according to the present invention;

[0045] Figure 5 It is a flow chart of an embodiment of a method for intelligent remote control of secondary equipment of a substation according to the present invention;

[0046] Among them, 1. switch device; 11. knob; 12. travel switch; 13. shaft; 2. control box; 3. micro motor; 4. control shaft; 5. mounting hole; 6. shaft hole. DETAILED DESCRIPTION

[0047] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0048] The following detailed description is an exemplary description, which is intended to provide further detailed description of the present invention. Unless otherwise specified, all technical terms used in the present invention have the same meaning as those generally understood by those skilled in the art to which the present application belongs. The terms used in the present invention are only for describing specific embodiments, and are not intended to limit exemplary embodiments according to the present invention.

[0049] Example 1

[0050] As shown in Figure 1 to Figure 4 As shown, an intelligent remote control device for secondary equipment of a substation includes:

[0051] A control box 2 adapted to the existing switch device 1, the control box 2 being installed between the switch device 1 and the screen panel;

[0052] The micro motor 3 is arranged in the control box 2, and is used to provide operating kinetic energy and drive the rotating shaft 13 of the switch device 1 to rotate to a predetermined position; the intelligent sensor module is arranged in the control box 2, and is used to detect the gear state of the switch device 1 and obtain a state feedback signal; the control unit is arranged in the control box 2, and the control unit is connected to the micro motor 3 and the intelligent sensor module. The control unit is used to receive remote control commands, and control the micro motor 3 to operate the switch device 1 according to the remote control commands, and at the same time receive the state feedback signal of the intelligent sensor module; the communication module is connected to the control unit, and is used to enable the control unit to communicate with the remote control system.

[0053] Specifically, the control box 2 is designed to be adaptable to the shape and size of the existing switchgear 1, and can be installed in the space between the switchgear 1 and the screen panel without changing the structure of the original switchgear 1. The control box 2 is made of high-strength engineering plastics and has sufficient mechanical strength and electrical insulation performance to adapt to the working environment of the substation. A micro motor 3 is arranged inside the control box 2, and the motor uses a high-efficiency, low-noise brushless DC motor to ensure that while providing sufficient operating kinetic energy, energy consumption and noise are reduced. The motor can achieve precise positioning and rotation of the shaft 13 of the switchgear 1 through precise motor driver control. The intelligent sensing module is integrated inside the control box 2, and uses a high-precision position sensor, such as a photoelectric encoder, to monitor the position of the shaft 13 of the switchgear 1 in real time. The module can detect the state change of the switchgear 1 between different gears, and convert the detected state into an electrical signal, which is sent to the control unit as a state feedback signal. The control unit is the control center of the device, and a high-performance microcontroller can be used, which has the ability to process data and execute commands. The control unit can receive control commands from the remote control system, and output corresponding control signals to the micro motor 3 through internal logic judgment and control algorithm to realize remote control operation of the switch device 1. At the same time, the control unit is also responsible for receiving the state feedback signal of the intelligent sensor module and analyzing and processing it. The communication module adopts RS-485 interface and follows Modbus RTU communication protocol to realize stable communication between the control unit and the remote control system. This module can receive remote control commands and upload state feedback signals to the remote control system to ensure the real-time and accuracy of remote control operation.

[0054] Through the above implementation, the intelligent remote control device of the present invention can realize intelligent and remote control of substation secondary equipment, improve the safety and efficiency of operation, reduce operation and maintenance costs, and adapt to the development needs of modern smart grids.

[0055] Example 2

[0056] As a preferred example, the control box 2 is provided with input terminals and output terminals, and the communication module performs 485 communication through the input terminals and output terminals. The input terminals are connected to 485 signals and 24V power supply, and the output terminals are used to connect to the input end of another control box 2.

[0057] Specifically, the control box 2 can be designed to include a set of input terminals and a set of output terminals, which are specifically used to realize the electrical connection between the control box 2 and the external device. The input terminal is responsible for accessing two signals, one is a 485 communication signal and the other is a 24V DC power supply. The design of the input terminal ensures the stable access of the communication signal and the power supply, and provides the necessary energy and communication capabilities for the operation of the control box 2. The output terminal is used to output the 485 communication signal of the control box 2 and connect it to the input terminal of the next control box 2 to realize cascade communication. This design allows multiple control boxes 2 to be connected in series, which expands the communication coverage of the remote control device and is suitable for equipment monitoring and management of large-scale substations. The communication module inside the control box 2 adopts the RS-485 communication interface, which supports multi-point communication and can exchange data with multiple devices. Through the 485 signal accessed by the input terminal, the communication module can receive the control command from the remote control system, and at the same time, send the status feedback signal through the output terminal to realize two-way communication. The control box 2 provides a stable power supply for the internal micro motor 3, intelligent sensor module, control unit and communication module through the 24V DC power supply accessed by the input terminal. The power supply design can adopt isolation technology to ensure the safety and stability of the power supply.

[0058] The input and output terminals are standardized and have the function of preventing wrong insertion, ensuring the reliability of electrical connection. The electrical parameters of the terminals match the internal circuit of the control box 2 to ensure the integrity of the communication signal and the stability of the power supply. The communication module and power module inside the control box 2 are integrated, which optimizes the space layout, reduces the internal wiring, and improves the reliability of the device and the convenience of maintenance.

[0059] Both the input terminals and the output terminals can be designed with protective measures, such as sealing rings and protective covers, to prevent the intrusion of dust and moisture and adapt to the complex working environment of the substation.

[0060] Through the above implementation, stable and reliable 485 communication and power supply can be achieved, providing a solid foundation for the intelligent and networked management of substation secondary equipment.

[0061] Example 3

[0062] As a preferred example, the switch device 1 includes a knob 11 and a travel switch 12, the control box 2 is installed between the knob 11 and the travel switch 12, and the travel switch 12 is arranged in the screen panel;

[0063] A plurality of mounting holes 5 are respectively provided on the first side surface and the opposite second side surface of the control box 2. A control shaft 4 is provided in the middle of the first side surface of the control box 2. The control shaft 4 is connected to the micro motor 3 through a transmission mechanism. The control shaft 4 is used to connect the knob 11 of the switch device 1. A rotating shaft hole 6 is provided in the middle of the second side surface of the control box 2, and the rotating shaft 13 of the travel switch 12 passes through and connects to the control shaft 4.

[0064] Specifically, the installation design of the control box 2 is as follows: the first side and the second side of the control box 2 are respectively provided with a plurality of installation holes 5, which are arranged in a square with the control shaft 4 as the center, and the corresponding areas of the plurality of installation holes 5 are successively enlarged to adapt to the switch devices 1 of different sizes. The control shaft 4 is provided in the middle of the first side of the control box 2, which is used to connect the knob 11 of the switch device 1; the rotation shaft hole 6 is provided in the middle of the second side, which is used for the rotation shaft 13 of the travel switch 12 to pass through and connect to the control shaft 4.

[0065] Specifically, the switch device 1 includes a knob 11 and at least one travel switch 12, wherein the knob 11 is used for manual operation to change the state of the switch device 1, and the travel switch 12 is installed in the screen panel. The control box 2 is designed to be installed between the knob 11 and the travel switch 12, ensuring that the control box 2 can operate the knob 11 and the travel switch 12. The first side and the second side of the control box 2 are both provided with a plurality of mounting holes 5, and these mounting holes 5 are arranged in a certain pattern to adapt to switch devices 1 of different sizes and shapes, ensuring that the control box 2 can be firmly installed on the screen panel. A control shaft 4 is provided in the middle of the first side of the control box 2, and the control shaft 4 is connected to the micro motor 3 through a transmission mechanism, and is used to transmit the rotational power of the motor to the knob 11. The transmission mechanism may include mechanical components such as gears, belts, and connecting rods, and is designed according to the specific requirements and space limitations of the switch device 1 to achieve accurate power transmission and positioning of the rotating shaft 13. The control shaft 4 is designed to be connected to the knob 11 of the switch device 1, and the knob 11 is remotely controlled and automatically switched to a predetermined position by the drive of the micro motor 3. A shaft hole 6 is provided in the middle of the second side surface of the control box 2, and the shaft hole 6 allows the shaft 13 of the travel switch 12 to pass through and be connected thereto.

[0066] By connecting the control shaft 4 with the rotating shaft 13 of the travel switch 12 , the control box 2 can realize remote control operation of the knob 11 .

[0067] The design of the mounting holes 5 takes into account switch devices 1 of various sizes and shapes. By adjusting the arrangement and size of the mounting holes 5, the control box 2 can adapt to different models of switch devices 1, thereby improving the versatility and expansibility of the device.

[0068] Through the above implementation, the knob 11 of the substation secondary equipment can be accurately controlled, and the position state of the knob 11 can be accurately fed back, thereby realizing the intelligence and remote control of the switch device 1.

[0069] Example 4

[0070] As a preferred example, the intelligent sensing module includes a first state monitoring module and a second state detection module, and the first state monitoring module and the second state detection module are used to detect the switching device 1 through different detection methods. The first state monitoring module obtains a first state feedback signal and sends it to the control unit, and the second state monitoring module obtains a second state feedback signal and sends it to the control unit.

[0071] Specifically, the intelligent sensing module is composed of two independent monitoring units, namely a first state monitoring module and a second state detection module. The two modules work together to monitor the state of the switch device 1 in real time through different detection technologies.

[0072] The first state monitoring module can use a high-precision position sensor, such as a photoelectric encoder or a Hall effect sensor, to detect the rotation angle and position of the knob 11 of the switch device 1. The module can provide an accurate first state feedback signal reflecting the real-time state of the knob 11.

[0073] The second state detection module uses another detection technology, such as a limit switch or a proximity sensor, to confirm whether the knob 11 has reached a predetermined limit position. The module provides a second state feedback signal to ensure the safety and accuracy of the knob 11 operation.

[0074] The state information obtained by the two monitoring modules, namely the first state feedback signal and the second state feedback signal, are sent to the control unit. The microcontroller or logic circuit inside the control unit processes these signals to ensure that the operation of the switch device 1 meets expectations.

[0075] By setting up two state monitoring modules, the intelligent sensing module realizes a redundant design. Even if one of the modules fails, the other module can still provide an accurate feedback signal, thereby improving the reliability of the system. The setting of the first state monitoring module and the second state detection module allows the control unit to monitor the state of the switch device 1 from different angles, which not only increases the accuracy of monitoring, but also provides more information for fault diagnosis.

[0076] The control unit is designed with an integrated processing mechanism, which can process the feedback signals from the two monitoring modules at the same time, and determine whether the state of the switch device 1 is normal through logical judgment. The control unit reports the state of the switch device 1 to the remote control system through the communication module, or receives further operation instructions from the remote control system according to the received first state feedback signal and second state feedback signal.

[0077] The control unit has an intelligent diagnostic function and can automatically determine whether there is any abnormality in the switch device l based on the feedback signals from the two monitoring modules, and trigger an alarm or execute preset safety measures when necessary.

[0078] Through the above implementation methods, the intelligent remote control device can provide a more reliable, accurate and safe remote monitoring and control solution, which is suitable for the automation and intelligent upgrade of key infrastructure such as substations.

[0079] Example 5

[0080] As a preferred example, the control unit also includes a self-test module, which is connected to the communication module and the intelligent sensor module. The self-test module is used to receive remote control commands and status feedback signals, determine whether the remote control operation is completed, and if not, send an abnormal alarm signal to the communication module.

[0081] Specifically, a self-check module is integrated inside the control unit. The module is an important component of the control unit and is responsible for real-time monitoring and diagnosis of key components of the remote control device.

[0082] The self-check module is connected to the communication module and the intelligent sensor module, and realizes data exchange and state synchronization through the interface or communication bus inside the control unit. The self-check module is designed to be able to receive control commands from the remote control system, which are transmitted to the control unit through the communication module and further processed by the self-check module. The state of the switch device l monitored by the intelligent sensor module is sent to the control unit through the state feedback signal, and the self-check module receives these signals to monitor the actual state of the switch device l.

[0083] The self-check module verifies whether the remote control operation has been completed correctly based on the received remote control command and status feedback signal through the built-in logic judgment algorithm.

[0084] If the self-test module determines that the remote control operation has not been completed correctly, or detects a system abnormality, it will send an abnormal alarm signal to the communication module so that the remote control system can be informed in time and take corresponding measures. The operation of the self-test module is fully automated, without the need for human intervention. It can be automatically executed when the control unit is started, or it can be performed periodically during the execution of the remote control command. The self-test module has a certain degree of intelligence and can identify multiple fault modes. It can also indicate the type of fault through different alarm signals, which facilitates fault diagnosis and maintenance. The self-test module can record the self-test results and abnormal alarm information in the non-volatile memory of the control unit to provide data support for subsequent analysis and maintenance.

[0085] Through the above implementation, the intelligent remote control device can realize comprehensive monitoring and automatic diagnosis of remote control operation, significantly improving the safety and reliability of substation secondary equipment operation. The design of the self-check module enhances the device's self-detection and problem response capabilities, ensuring the accuracy and timeliness of remote control operation.

[0086] Example 6

[0087] As a preferred example, there are multiple control boxes 2, which are respectively installed on different switch devices 1. The multiple control boxes 2 are electrically connected to the communication management machine, and the communication management machine is connected to the sequential control host. The sequential control host is used to control all switch devices 1. When a certain switch device 1 needs to be opened, a remote control command of the corresponding control box 2 is sent to the communication management machine; the communication management machine is used to send the remote control command to the corresponding control box 2.

[0088] Specifically, the intelligent remote control device for substation secondary equipment involved in this embodiment includes a plurality of control boxes 2, and each control box 2 is installed on a different switch device 1.

[0089] Each control box 2 is adapted to its corresponding switch device 1 and is installed at an appropriate position between the switch device 1 and the screen panel to ensure that the control box 2 can accurately control and monitor the status of the corresponding switch device 1. All control boxes 2 are electrically connected to the communication management machine through appropriate communication lines, such as RS-485 bus. As the central node, the communication management machine is responsible for managing data communications with the control box 2. The communication management machine is further connected to the sequential control host, which is the main control unit of the entire remote control system and is responsible for issuing control instructions to the communication management machine. The sequential control host has the ability to control all switch devices 1 and can issue specific remote control commands to the communication management machine according to the operating requirements of the substation.

[0090] When the sequential control host needs to control a certain switch device 1 to open, it will send a corresponding remote control command to the communication management machine, which contains the address information of the target control box 2. After receiving the remote control command sent by the sequential control host, the communication management machine is responsible for forwarding the command to the corresponding control box 2 to ensure the correct execution of the command. The control box 2 that receives the remote control command forwarded by the communication management machine parses the command through its internal communication module and drives the micro motor 3 to perform the corresponding switch operation through the control unit. After executing the operation, the control box 2 monitors the operation result through the intelligent sensor module, and sends the status feedback signal back to the communication management machine, which is finally transmitted to the sequential control host to complete the closed-loop control.

[0091] This implementation supports expanding the number of control boxes 2 according to the scale and needs of the substation, and realizes monitoring and control of more switch devices 1 by increasing the processing capabilities of the communication management machine and the sequential control host.

[0092] The communication between the control box 2, the communication management machine and the sequential control host adopts a standardized communication protocol, such as Modbus or other industrial-grade communication protocols, to ensure the stability and security of the communication.

[0093] Through the above implementation, the intelligent remote control device can realize centralized monitoring and remote control of multiple switchgear devices 1 in the substation, improve the automation level and operation efficiency of the substation, and ensure the safety and reliability of operation.

[0094] Example 7

[0095] like Figure 5 As shown, a method for intelligent remote control of secondary equipment in a substation includes the following steps:

[0096] S1, the control unit of the control box 2 receives the remote control command, and controls the first state detection module and the second state detection module to detect the state of the switch device 1;

[0097] Specifically, the control unit of the control box 2 is initialized and waits to receive a control command from the remote control system.

[0098] After receiving the remote control command, the control unit activates the first state detection module and the second state detection module.

[0099] The first state detection module and the second state detection module respectively use different detection technologies to independently detect the state of the switch device 1.

[0100] S2, the control unit receives the first state feedback signal after the first state detection module completes the detection, receives the second state feedback signal after the second state detection module completes the detection, performs logical judgment, and judges the current state of the switch device 1 when the first state feedback signal and the second state feedback signal are consistent. If they are inconsistent, it is judged to be abnormal, and the control unit sends an abnormal alarm signal through the communication module;

[0101] Specifically, the control unit receives a first state feedback signal from the first state detection module and a second state feedback signal from the second state detection module.

[0102] The control unit compares and makes logical judgments on the two status feedback signals:

[0103] If the first state feedback signal is consistent with the second state feedback signal, the control unit considers that the current state of the switching device 1 has been accurately detected.

[0104] If the two signals are inconsistent, the control unit determines it as an abnormal situation and sends an abnormal alarm signal through the communication module to notify the remote control system to conduct inspection or intervention.

[0105] S3. When the current state of the switch device 1 determined by the control unit for the first time is inconsistent with the predetermined position set by the remote control command, the control unit drives the micro motor 3, drives the control shaft 4 to rotate through the transmission mechanism, drives the switch device 1 to rotate to the predetermined position, and returns to step S2; when the current state of the switch device 1 determined by the control unit again is inconsistent with the predetermined position set by the remote control command, the control unit sends an abnormal alarm signal through the communication module; when the current state of the switch device 1 determined by the control unit is consistent with the predetermined position set by the remote control command, the current state of the switch device 1 is fed back through the communication module.

[0106] Specifically, if the current state of the switch device 1 determined by the control unit for the first time is inconsistent with the predetermined position set by the remote control command:

[0107] The control unit drives the micro motor 3 to drive the control shaft 4 to rotate through the transmission mechanism, thereby performing a predetermined position rotation operation of the switch device 1 .

[0108] After the operation is completed, the control unit returns to step S2 and performs state detection and logic judgment again.

[0109] If the current state of the switch device 1 determined by the control unit again is still inconsistent with the predetermined position set by the remote control command:

[0110] The control unit again sends an abnormal alarm signal through the communication module, prompting the remote control system to perform further fault diagnosis and processing.

[0111] If the current state of the switch device 1 determined by the control unit is consistent with the predetermined position set by the remote control command:

[0112] The control unit feeds back the current state of the switch device 1 to the remote control system through the communication module to complete the closed-loop control.

[0113] This method supports automated execution and can be set up for periodic detection or triggered according to instructions from a remote control system.

[0114] The method can be extended to multiple control boxes 2 to achieve centralized monitoring and control of multiple switchgear devices 1 in a large-scale substation.

[0115] Example 8

[0116] As a preferred example, the method further includes the following steps:

[0117] Receive remote control commands from the sequential control host through the communication management machine;

[0118] The communication management machine analyzes the remote control command and forwards the remote control command to the corresponding control box 2 as needed;

[0119] The control host receives the status feedback signal and abnormal alarm signal sent by the control box 2, and displays them through the human-computer interaction platform. If an abnormal alarm signal is received, the preset abnormality handling program is started.

[0120] Specifically, the communication management machine is always in a listening state, ready to receive remote control commands from the sequential control host.

[0121] The remote control command includes an operation instruction for the specific control box 2, and is used to execute a predetermined operation of the switch device 1.

[0122] After receiving the remote control command, the communication management machine first parses the target control box 2 address and operation instructions contained in the command.

[0123] According to the analysis results, the communication management machine forwards the remote control command to the corresponding control box 2 as needed to ensure accurate transmission of the command.

[0124] The sequential control host is equipped with a communication interface for receiving status feedback signals and abnormal alarm signals from the control box 2.

[0125] These signals are transferred through the communication management machine and sent to the sequential control host, which converts the signals into visual information on the human-computer interaction platform.

[0126] The control host displays the received status feedback signals and abnormal alarm signals in the form of graphics or text through the human-computer interaction platform.

[0127] Operators can monitor the status of substation secondary equipment in real time through the human-computer interaction platform and respond to abnormal situations in a timely manner.

[0128] When the control host receives an abnormal alarm signal, it automatically or prompts the operator to perform corresponding processing according to the preset abnormal processing procedure.

[0129] The exception handling procedure may include but is not limited to: resending control commands, switching to backup equipment, notifying maintenance personnel, recording exception information, etc.

[0130] The Shunkong host records the detailed information and processing results of the abnormal alarm in the system log to facilitate subsequent analysis and auditing.

[0131] If necessary, the control host can also report abnormal conditions and processing results to higher-level monitoring systems or managers.

[0132] This method supports the use with sequence control hosts and communication management machines of different models and specifications, and has good compatibility and scalability.

[0133] Through software upgrades or hardware expansions, it can adapt to the remote control needs of substations of different sizes and improve the applicability of the system.

[0134] Example 9

[0135] As a preferred example, the following steps are also included, using the Modbus protocol to communicate between the sequential control host and the multiple control boxes 2, specifically including:

[0136] The sequential control host initiates a communication request in Modbus RTU mode through the RS-485 interface. The communication request contains a specific address for selecting control box 2;

[0137] Specifically, the control host initiates a communication request through the RS-485 interface in accordance with the Modbus RTU mode. The communication request contains specific address information for selecting a specific control box 2 to ensure accurate transmission of the command.

[0138] The selected control box 2 responds to the request of the sequential control host, returns the status information of the control box 2 or performs the operation requested by the sequential control host;

[0139] Specifically, after receiving the communication request from the sequential control host, the selected control box 2 confirms itself as the communication target according to the address information in the request. The control box 2 responds to the request of the sequential control host and returns its status information or performs corresponding operations according to the request.

[0140] CRC check is used during the communication process to ensure the accuracy of data transmission, and the composition of the data frame follows the format specified by the Modbus protocol;

[0141] Specifically, during the communication process, a CRC check mechanism is used to ensure the accuracy and integrity of data transmission. The composition of the data frame follows the format specified by the Modbus protocol, including a start bit, data bits, check bits, and stop bits.

[0142] Different operation requests are distinguished by function codes, including reading the status of control box 2, executing remote control operation of switch device 1, and querying the node address of control box 2;

[0143] Specifically, different operation requests are distinguished by function codes, and the function codes indicate the specific operations that the control box 2 needs to perform.

[0144] The function codes include but are not limited to reading the status of the control box 2, executing remote control operations of the switch device 1, querying the node address of the control box 2, etc.

[0145] During the communication process, the sequential control host uses the broadcast address 0xFF for write operation and sends unified instructions to all control boxes 2.

[0146] Specifically, the sequential control host uses the broadcast address 0xFF to perform a write operation during the communication process so that all control boxes 2 can receive the command. This operation is applicable to situations where unified instructions are issued to all control boxes 2, such as global status query or synchronous operation. In the communication settings of the sequential control host and the control box 2, configure the communication parameters, including baud rate, data bit, stop bit, and parity bit, to ensure the stability and reliability of communication. The sequential control host manages and maintains the communication process with each control box 2 to ensure that the sending, receiving, and execution of commands are carried out according to the predetermined logic. During the communication process, if a data error occurs or the control box 2 does not respond as expected, the sequential control host will perform corresponding processing according to the exception handling mechanism. Ensure the security and privacy of data transmission during the communication process to prevent unauthorized access or data leakage. Optimize the implementation of the communication protocol, reduce communication delays, improve data transmission efficiency, and ensure the real-time nature of remote control operations.

[0147] Through the above implementation, the intelligent remote control method uses the Modbus protocol to achieve efficient, stable and secure communication between the sequential control host and multiple control boxes 2, meeting the needs of substation automation and intelligence.

[0148] Example 10

[0149] As a preferred example, it further includes:

[0150] Before establishing a communication connection between the sequential control host and the control box 2, configure the physical layer and data link layer to ensure the consistency of communication parameters;

[0151] Specifically, before establishing a communication connection between the sequential control host and the control box 2, the physical layer and data link layer are configured, including but not limited to the setting of the baud rate, data bits, stop bits and parity bits of the serial port, to ensure the consistency of communication parameters, thereby ensuring the stability and reliability of data transmission.

[0152] The control host controls the control box 2 point-to-point or group through the unicast and broadcast modes of the Modbus protocol;

[0153] Specifically, the control host uses the unicast and broadcast modes provided by the Modbus protocol to achieve point-to-point control or group control of a single control box 2 or all control boxes 2. In the unicast mode, the control host sends a function code of a specific address, and only the target control box 2 responds to the request; in the broadcast mode, the control host uses the broadcast address so that all control boxes 2 receive and execute the corresponding operation.

[0154] In remote control operation, the sequential control host controls the specific output of the control box 2 by sending specific function codes and register addresses;

[0155] Specifically, in remote control operation, the control host controls a specific output of the control box 2, such as the remote opening and closing operation of the switch device 1, by sending a specific function code and register address. The function code defines the nature of the operation, and the register address specifies the specific object of the operation, such as a specific control box 2 or a specific device status in the control box 2.

[0156] The sequential control host queries the node address of the control box 2 through the Modbus protocol, and identifies and addresses the switch device 1;

[0157] Specifically, the control host queries the node address of the control box 2 through the Modbus protocol to realize the identification and addressing of the switch device 1. Each control box 2 has a unique node address, so that the control host can accurately identify and control each control box 2, ensuring the accuracy of remote control operation.

[0158] During the debugging process, the debugging software is used to communicate with the control box 2, configure the control box 2 parameters and monitor the status of the switch device 1.

[0159] Specifically, during the debugging process, a dedicated debugging software is used to communicate with the control box 2 and configure the control box 2 parameters, such as the communication address, response timeout setting, etc. The debugging software provides a user interface so that technicians can easily set parameters and monitor the status of the switch device 1 to ensure that the control box 2 works as expected. The control box 2 monitors the status of the switch device 1 in real time and feeds back the status information to the sequential control host. The status information includes but is not limited to the current position, operating status, abnormal information, etc. of the switch device 1, providing a comprehensive device status view for the sequential control host. The control box 2 has anomaly detection capabilities. When an abnormal device status is detected, it automatically sends an abnormal alarm signal to the sequential control host. After receiving the abnormal alarm signal, the sequential control host takes corresponding measures according to the preset abnormality handling procedure, such as recording abnormal information, trying to resend control commands, or notifying maintenance personnel.

[0160] The design of this remote control device takes into account the scalability and compatibility of the system, allowing more control boxes 2 to be added to the existing system, or integrated with other Modbus compatible devices. Through software upgrades or hardware expansions, it can adapt to substation automation systems of different sizes and requirements.

[0161] Through the above implementation, the intelligent remote control device not only provides an efficient and reliable remote control solution, but also has powerful debugging, monitoring and exception handling capabilities, ensuring the safe and stable operation of the substation secondary equipment.

[0162] Embodiment 11

[0163] The present invention supports RS485 communication Modbus protocol to control the gear switching operation of the handle. It supports 2-7 gear electric switching. It supports each gear position status detection and uploading function. It has a self-checking function and sends an abnormal alarm signal when remote control operation is impossible. It supports manual operation.

[0164] The switch device 1 can be a switching handle, and a large number of auxiliary contacts are provided at the rear of the switching handle to transmit signals to various devices or systems. The present invention adopts a method of not replacing the original handle or changing the wiring of the handle, and by installing a control box 2 adapted to different handles, the electric operation of the switching handle shaft 13 is rotated to achieve switching of different states. The present invention adopts a micro motor 3 to provide operating kinetic energy, and uses micro motor precision control technology and intelligent sensing technology to achieve precise control of the handle rotation angle and state detection.

[0165] Specifically, the present invention is connected to the communication management machine through the RS485 interface, performs 485 communication with the communication management machine, receives the switching command sent by the sequence control host through the communication management machine, and controls the motor through the CPU to perform the corresponding switching operation, and then feeds back the operation results detected after the execution to the communication management machine and the sequence control host through 485.

[0166] The Modbus serial link protocol is a master / slave protocol. This protocol is intended to specify that the data exchange between the terminal device and the bus interface host computer is carried out in the Modbus RTURemote Terminal Unit mode. Asynchronous master-slave half-duplex communication is adopted. The bus interface unit host computer always acts as the master station, and the terminal equipment relay protection device works as the slave station.

[0167] Physical Layer

[0168] Transmission interface: RS-485. Communication address: 1~192 (slave station). Communication baud rate: 19200bps. Communication medium: shielded twisted pair.

[0169] Data Link Layer

[0170] Modbus Master / Slave Protocol Principle

[0171] The Modbus serial link protocol is a master-slave protocol. At the same time, only one master node is connected to the bus, and one or more slave nodes (maximum number is 247) are connected to the same serial bus. Modbus communication is always initiated by the master node. The slave node will never send data without receiving a request from the master node. The slave nodes will never communicate with each other. The master node will only initiate one Modbus transaction at a time. The master node sends Modbus requests to the slave nodes in two modes:

[0172] 1In unicast mode, the master node accesses a subnode with a specific address. After the subnode receives and processes the request, it returns a message (a 'response') to the master node. In this mode, a Modbus transaction consists of two ~223~ messages: a request from the master node and a response from the subnode. Each subnode must have a unique address (1 to 247) so that it can be addressed independently from other nodes.

[0173] 2 In broadcast mode, the master node sends a request to all slave nodes. No response is returned to the master node's broadcast request. Broadcast requests are generally used for write commands. All devices must accept the write function of broadcast mode. Address 0xFF is specifically used to represent broadcast data.

[0174] Byte format

[0175] Coding system: 8-bit binary, each 8-bit byte in the message contains two 4-bit hexadecimal characters (0-9, AF).

[0176] Bits per byte: 1 start bit, 8 data bits sent least significant bit first, 0 even parity, 1 stop bit. Characters are transmitted serially, and each character or byte is sent in this order (from left to right):

[0177] Start bit 0 1 2 3 4 5 6 7 stop Bit

[0178] Modbus frame description

[0179] Address field Function code Data Field Verification Field

[0180] The line idle interval between two messages must be at least 33 bits. The timeout period for the bus interface unit to wait for the unit message is 50ms, that is, after the bus interface unit sends the message that requires the unit to respond, if it has not received the first byte of the response message within 50ms, it is considered to be a timeout. There is no error code. When the protection device detects that the command is wrong, it will not respond. The maximum message length that can be sent is 178 bytes. Therefore, the length of the corresponding response message for the command sent by the master station should not exceed 178 bytes.

[0181] Address field

[0182] The Modbus addressing space has 256 different addresses.

[0183] 0 1～253 254 255 reserve Subnode address The address when the substation requests addressing Broadcast command address

[0184] Address 0 is reserved. All sub-nodes must recognize the broadcast address. The Modbus bus interface unit does not have an address, only the sub-node must have an address. This address must be unique on the Modbus serial bus.

[0185] The address field is at the beginning of the data packet and consists of 8 bits of data. When the master sends a data packet, only the terminal device slave with the same query address as the master will respond.

[0186] Function code

[0187] It is the second byte of each communication information frame transmission. It is sent as a host request, telling the slave what action to perform through the function code. As a slave response, the function code returned by the slave is the same as the function code sent from the host, indicating that the slave has responded to the host and has performed related operations.

[0188] Function code definition Operation (binary) 01H Read switch output Read one or more switch output status data 02H Read switch input Read one or more switch status input data 03H Read register data Read data from one or more registers 05H Write switch output Control one relay "close / open" output 06H Write single register Write a set of binary data to a single register 10H Write multiplexer register Write multiple sets of binary data into multiple registers

[0189] Note:

[0190] 1 The starting address in the function code 01H and 02H message must be an integer multiple of 8.

[0191] Data Domain

[0192] The data domain includes what information needs to be returned by the slave or what action needs to be performed. This information can be data such as: switch input / output, analog input / output, register, etc., reference address, etc. The data in the data area is generally two bytes, with the high-order byte first and the low-order byte second; for multi-byte data, the high-order word is first and the low-order word is second.

[0193] Check CRC field

[0194] The host or slave can use the check code to determine whether the received information is correct. Due to electronic noise or some other interference, errors may occur during the transmission of information. The error check code CRC can check whether the information of the host or slave is incorrect during the communication data transmission process. The wrong data can be discarded whether it is sent or received, which increases the safety and efficiency of the system. The CRC redundant cyclic code of the communication protocol contains 2 bytes, with the low-order byte in front and the high-order byte in the back. The CRC code is calculated by the sending device host and placed at the end of the sent information frame. The device slave receiving the information recalculates the CRC of the received information and compares whether the calculated CRC is consistent with the received one. If the two do not match, it indicates an error. Only 8 data bits are used when calculating CRC. The start bit, stop bit, and even check bit are not involved in the CRC calculation.

[0195] Interact with the sequence host information

[0196]

[0197]

[0198] Function code and address table

[0199] lFunction code "02H": Get remote signal status

[0200] Use this function code to read the 1 to 2000 consecutive states of discrete inputs in a remote device. The request PDU details the starting address, which is the first input address specified and the input number. Inputs are addressed starting at zero. So addressing inputs 1-16 is 0-15. The discrete inputs in the response message are divided into one input for each bit in the data field. The indication state is l = ON and 0 = OFF. The LSB least significant bit of the first data byte includes the input addressed in the inquiry. The other inputs are followed in this order, up to the high end of this byte, and in the order from low to high in subsequent bytes. If the number of inputs returned is not a multiple of eight, the remaining bits in the last data byte are padded with zeros up to the high end of the byte. The byte number field describes the number of complete bytes of data.

[0201] Request PDU

[0202] Function code 1 byte 0x02 Starting address 2 bytes 0x0000 to 0xFFFF Input quantity 2 bytes 1 to 2000 (0x7D0)

[0203] Response PDU

[0204] Function code 1 byte 0x82 Number of bytes 2 bytes N* Input Status N*x1 bytes

[0205] Address Table

[0206]

[0207] A.Note

[0208] (1) RO means read-only, WO means write-only, and RW means both read and write.

[0209] B. Message Examples

[0210] l Request the remote signal status of station 1

[0211] Master: 01 0200 01 00 2429D1

[0212] Substation: 01 020500 00 00 00 00 A252

[0213] 2. Function code "03H": Get telemetry value

[0214] Use this function code to read the contents of a continuous block of holding registers in a remote device. The request PDU specifies the starting register address and the number of registers. Registers are addressed starting at zero. Therefore, registers 1-16 are addressed as 0-15. The register data in the response message is divided into two bytes per register, and the binary content is directly adjusted in each byte.

[0215] For each register, the first byte includes the high-order bits, and the second byte includes the low-order bits.

[0216] Request PDU

[0217] Function code 1 byte 0x03 Starting address 2 bytes 0x0000 to 0xFFFF Number of registers 2 bytes 1 to 125 (0x7D0)

[0218] Response PDU

[0219] Function code 1 byte 0x03 Number of bytes 2 bytes N* Register Value N*x2 bytes

[0220] Address Table

[0221] Serial number address definition property Object Type illustrate 1 0100 Handle logic state RO 16bit Handle logic state 2 0101～0104 Reserve RO 16bit Reserve

[0222] A. Note: RO stands for read-only, WO stands for write-only, and RW stands for both read and write.

[0223] B. Message Examples

[0224] Read two telemetry values ​​starting at address 256

[0225] Master: 01 0301 00 00 02C5 F7

[0226] Substation: 01 030400 00 00 00 FA 33

[0227] 3. Function code "05H": remote control operation

[0228] Use this function code to write a single output to ON or OFF on a remote device. The constant in the request data field specifies the requested ON / OFF state. A value of FF00 hex requests an output to be ON. A value of 0000 hex requests an output to be OFF. All other values ​​are illegal and have no effect on the output. The request PDU specifies the mandatory coil address. Coils are addressed starting at zero. Therefore, addressing coil 1 is 0. The constant in the coil value field specifies the requested ON / OFF state. A value of 0XFF00 hex requests a coil to be ON. A value of 0X0000 hex requests a coil to be OFF. All other values ​​are illegal and have no effect on the coil. The normal response is the answer to the request and is returned after the coil state is written.

[0229] Request PDU

[0230] Function code 1 byte 0x05 Output Address 2 bytes 0x0000 to 0xFFFF Output value 2 bytes 0x0000 to 0x00

[0231] Response PDU

[0232] Function code 1 byte 0x05 Output Address 2 bytes 0x0000 to 0xFFFF Output value 2 bytes 0x0000 to 0xFF00

[0233] Address Table

[0234]

[0235] A. Note: RO stands for read-only, WO stands for write-only, and RW stands for both read and write.

[0236] B. Message Examples

[0237] The register value range of the operation command is 0x0000~0x0009

[0238] Remote control operation:

[0239] Master: 01 050701 00 81 5D 1E

[0240] Substation: 01 05070l 00 81 5D 1E

[0241] Master: 01 050701 FF 00 DC 8E

[0242] Substation: 01 05070l FF 00 DC 8E

[0243] 4. Function code "06H": parameter setting

[0244] This function code is used to write a single holding register in a remote device. The request PDU specifies the address of the register to be written. Registers are addressed starting at zero. Therefore, addressing register 1 is 0. A normal response is the answer to the request and is returned after the register contents are written.

[0245] Request PDU

[0246]

[0247] Response PDU

[0248] Function code 1 byte 0x06 Register Address 2 bytes 0x0000 to 0xFFFF Register Value 2 bytes 0x0000 to 0xFFFF

[0249] Address Table

[0250]

[0251] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the above disclosed embodiments are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. An intelligent remote control device for secondary equipment of a substation, characterized in that: include: A control box (2) adapted for an existing switch device (1), wherein the control box (2) is installed between the switch device (1) and a screen panel; A micro motor (3) is arranged in the control box (2) and is used to provide operating kinetic energy and drive the rotating shaft (13) of the switch device (1) to rotate to a predetermined position; an intelligent sensor module, arranged in the control box (2), for detecting the gear state of the switch device (1) to obtain a state feedback signal; a control unit, arranged in the control box (2), the control unit being connected to the micro motor (3) and the intelligent sensor module, the control unit being used to receive a remote control command, and to control the micro motor (3) to operate the switch device (1) according to the remote control command, while receiving the state feedback signal of the intelligent sensor module; A communication module is connected to the control unit and is used to enable the control unit to communicate with a remote control system.

2. According to claim 1, the intelligent remote control device for secondary equipment of a substation is characterized in that: The control box (2) is provided with an input terminal and an output terminal, and the communication module performs 485 communication via the input terminal and the output terminal. The input terminal is connected to a 485 signal and a 24V power supply, and the output terminal is used to connect to the input end of another control box (2).

3. According to claim 1, the intelligent remote control device for secondary equipment of a substation is characterized in that: The switch device (1) comprises a knob (11) and a travel switch (12), the control box (2) is installed between the knob (11) and the travel switch (12), and the travel switch (12) is arranged in the screen panel; A plurality of mounting holes (5) are respectively provided on the first side surface and the opposite second side surface of the control box (2); a control shaft (4) is provided in the middle of the first side surface of the control box (2); the control shaft (4) is connected to the micro motor (3) through a transmission mechanism; the control shaft (4) is used to connect to a knob (11) of a switch device (1); a rotating shaft hole (6) is provided in the middle of the second side surface of the control box (2) for the rotating shaft (13) of the travel switch (12) to pass through and connect to the control shaft (4).

4. The intelligent remote control device for secondary equipment of a substation according to claim 1, characterized in that: The intelligent sensing module comprises a first state monitoring module and a second state detection module, wherein the first state monitoring module and the second state detection module are used to detect the switch device (1) by different detection methods, wherein the first state monitoring module obtains a first state feedback signal and sends it to the control unit, and the second state monitoring module obtains a second state feedback signal and sends it to the control unit.

5. The intelligent remote control device for secondary equipment of a substation according to claim 1, characterized in that: The control unit also includes a self-check module, which is connected to the communication module and the intelligent sensor module. The self-check module is used to receive remote control commands and status feedback signals, determine whether the remote control operation is completed, and if not, send an abnormal alarm signal to the communication module.

6. The intelligent remote control device for secondary equipment of a substation according to claim 1, characterized in that: There are a plurality of control boxes (2), which are respectively installed on different switch devices (1). The plurality of control boxes (2) are electrically connected to a communication management machine, and the communication management machine is connected to a sequential control host. The sequential control host is used to control all switch devices (1). When a certain switch device (1) needs to be opened, a remote control command corresponding to the control box (2) is sent to the communication management machine; the communication management machine is used to send the remote control command to the corresponding control box (2).

7. A method for intelligent remote control of secondary equipment of a substation, based on an intelligent remote control device for secondary equipment of a substation according to any one of claims 1 to 6, characterized in that: The following steps are included: S1, a control unit of the control box (2) receives a remote control command and controls the first state detection module and the second state detection module to detect the state of the switch device (1); S2, the control unit receives a first state feedback signal after the first state detection module completes detection, receives a second state feedback signal after the second state detection module completes detection, performs logical judgment, and when the first state feedback signal and the second state feedback signal are consistent, judges the current state of the switch device (1); if they are inconsistent, it is judged to be abnormal, and the control unit sends an abnormal alarm signal through the communication module; S3. When the current state of the switch device (1) determined by the control unit for the first time is inconsistent with the predetermined position set by the remote control command, the control unit drives the micro motor (3) to drive the control shaft (4) to rotate through the transmission mechanism, thereby driving the switch device (1) to rotate to the predetermined position, and returns to step S2; when the current state of the switch device (1) determined by the control unit for the second time is inconsistent with the predetermined position set by the remote control command, the control unit sends an abnormal alarm signal through the communication module; when the current state of the switch device (1) determined by the control unit is consistent with the predetermined position set by the remote control command, the current state of the switch device (1) is fed back through the communication module.

8. The intelligent remote control method for secondary equipment of a substation according to claim 7, characterized in that: The following steps are also included: Receive remote control commands from the sequential control host through the communication management machine; The communication management machine analyzes the remote control command and forwards the remote control command to the corresponding control box (2) as needed; The sequential control host receives the status feedback signal and abnormal alarm signal sent by the control box (2), and displays them through the human-computer interaction platform; if an abnormal alarm signal is received, a preset abnormality handling program is started.

9. The intelligent remote control method for secondary equipment of a substation according to claim 8, characterized in that: The method further comprises the following steps, wherein the Modbus protocol is used to communicate between the sequential control host and the plurality of control boxes (2), specifically comprising: The sequential control host initiates a communication request in Modbus RTU mode via the RS-485 interface, wherein the communication request includes a specific address for selecting the control box (2); The selected control box (2) responds to the request of the sequential control host, returns the status information of the control box (2) or performs the operation requested by the sequential control host; CRC check is used during the communication process to ensure the accuracy of data transmission, and the composition of the data frame follows the format specified by the Modbus protocol; Different operation requests are distinguished by function codes, including reading the state of the control box (2), executing remote control operation of the switch device (1), and querying the node address of the control box (2); The sequential control host uses the broadcast address 0xFF to perform a write operation during the communication process, and sends a unified command to all the control boxes (2).

10. The intelligent remote control method for secondary equipment of a substation according to claim 9, characterized in that: Further including: Before establishing a communication connection between the sequential control host and the control box (2), the physical layer and the data link layer are configured to ensure the consistency of communication parameters; The sequential control host performs point-to-point control or group control on the control box (2) through the unicast and broadcast modes of the Modbus protocol; In remote control operation, the sequential control host controls a specific output of the control box (2) by sending a specific function code and register address; The sequential control host queries the node address of the control box (2) through the Modbus protocol to identify and address the switch device (1); During the debugging process, debugging software is used to communicate with the control box (2), configure the parameters of the control box (2) and monitor the status of the switch device (1).

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