Remote control system and remote control method for hard pressing plate of transformer substation

Abstract

The invention provides a remote control system and a remote control method for a hard pressing plate of a transformer substation. The system comprises a monitoring host, a pressing plate body, a motor, a transmission shaft, a communication control module and a motor control module, the monitoring host issues a pressing plate switching control instruction and receives a corresponding action result signal through the communication control module; the communication control module sends the received pressing plate switching control instruction to the motor control module and sends an action result signal returned by the motor control module to the monitoring host; the motor control module controls the action of the motor according to the received pressing plate switching control instruction, generates an action result signal according to the final position of the transmission shaft obtained after the action of the motor is completed, and sends the action result signal to the communication control module; the transmission shaft drives the pressing plate body to rotate and / or move according to the action of the motor. The intelligent remote control operation precision of the hard pressing plate can be effectively improved, safe and reliable input and output closed-loop control of the hard pressing plate is achieved, and then the working efficiency of operation and maintenance personnel is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of hard pressure plate remote control, and in particular to a remote control system and method for a hard pressure plate in a transformer substation. Background Art

[0002] With the rapid development of automation and intelligent technology in substations, one-button sequential control technology has been well used for primary equipment, but the operation and withdrawal of secondary equipment is still mainly achieved by manual operation of hard pressure plates by operation and maintenance personnel on site. This method of operation and withdrawal is easily affected by human and environmental factors, and there are hidden dangers such as long operation time, wrong operation and withdrawal of pressure plates, and inadequate operation and withdrawal of pressure plates, which in turn affects the safe operation of substations. Although some studies have proposed a method to achieve intelligent operation and withdrawal of hard pressure plates through drive motors and transmission mechanisms, the method of using friction-based continuous operation of pressure plates has certain unreliability, and it is impossible to accurately judge whether the hard pressure plate has reached the target state, resulting in the inability to achieve safe and reliable closed-loop control of the operation and withdrawal of hard pressure plates, and cannot truly meet the high-reliability application requirements of remote control hard pressure plates. Summary of the invention

[0003] The purpose of the present invention is to provide a remote control system for a substation hard pressure plate, which can realize accurate feedback control of the final hard pressure plate control state by monitoring the position changes of the transmission shaft during the remote control operation of the hard pressure plate, effectively improve the intelligent remote control operation accuracy of the hard pressure plate, realize safe and reliable closed-loop control of the hard pressure plate, and thus improve the work efficiency of operation and maintenance personnel.

[0004] In order to achieve the above objectives, it is necessary to provide a remote control system and method for a substation hard pressure plate in response to the above technical problems.

[0005] In a first aspect, an embodiment of the present invention provides a remote control system for a hard pressure plate in a substation, the system comprising a monitoring host, a communication control module, a motor control module, a motor, a transmission shaft and a pressure plate body;

[0006] The monitoring host is connected to the communication control module and is used to issue a pressure plate throwing and retracting control instruction and receive a corresponding action result signal through the communication control module;

[0007] The communication control module is connected to the motor control module and the monitoring host respectively, and is used to send the received pressure plate throwing and retracting control instructions to the motor control module, and send the action result signal returned by the motor control module to the monitoring host;

[0008] The motor control module is connected to the communication control module and the motor, respectively, and is used to control the action of the motor according to the received pressure plate throwing and retracting control instruction, and generate an action result signal according to the final position of the transmission shaft obtained after the motor action is completed, and send it to the communication control module;

[0009] The transmission shaft is connected to the motor and the pressing plate body respectively, and is used to drive the pressing plate body to generate rotational motion and / or displacement motion according to the action of the motor, so as to perform the pressing plate insertion and retraction operation.

[0010] Furthermore, the system also includes a status monitoring module;

[0011] The state monitoring module is connected to the pressing plate body and the motor control module respectively, and is used to monitor the actual state of the pressing plate body and send the actual state of the pressing plate body to the motor control module;

[0012] The motor control module is also used to obtain the actual state of the pressure plate body through the state monitoring module after the motor action is completed, generate an action result signal according to the actual state of the pressure plate body and the final position of the transmission shaft, and send it to the communication control module.

[0013] Furthermore, the state monitoring module includes an infrared detection unit and a micro switch detection unit.

[0014] Further, the motor control module includes a motor control unit, a motor drive unit and a displacement detection unit;

[0015] The motor control unit is connected to the motor drive unit and the displacement detection unit respectively, and is used to obtain the target position deviation of the transmission shaft from the pressure plate throwing and retracting control instruction and the displacement detection unit, and output a motor control signal according to the target position deviation and send it to the motor drive unit, and after the motor drive unit completes the driving operation, generate the action result signal and send it to the communication control module; the action result signal includes a control normal signal and a control abnormal signal;

[0016] The motor drive unit is connected to the motor and is used to adjust the current and voltage of the motor according to the received motor control signal to generate corresponding motor action parameters, and drive the motor to act according to the motor action parameters; the motor action parameters include speed, torque and direction;

[0017] The displacement detection unit is connected to the transmission shaft and is used to detect the current position information of the transmission shaft in real time and send the current position information to the motor control unit.

[0018] Further, the motor control unit includes a transmission shaft position calculation unit, a position deviation calculation unit and a controller;

[0019] The transmission shaft position calculation unit is connected to the displacement detection unit, and is used to obtain the current position information through the displacement detection unit, and input the current position obtained by analog-to-digital conversion of the current position information into the position deviation calculation unit;

[0020] The position deviation calculation unit is connected to the transmission shaft position calculation unit and the controller respectively, and is used to convert the pressure plate throwing and retracting control instruction into the target position of the transmission shaft, and calculate the target position deviation according to the target position and the received current position, and input the target position deviation to the controller;

[0021] The controller is connected to the position deviation calculation unit and the motor drive unit respectively, and is used to generate the motor control signal according to the target position deviation, and send the motor control signal to the motor drive unit.

[0022] Furthermore, the motor control unit also includes a control result feedback unit;

[0023] The control result feedback unit is connected to the position deviation calculation unit and the communication control module, respectively, and is used to obtain the final target deviation based on the position deviation calculation unit and the final position of the transmission shaft, and determine whether the final target deviation meets the preset position deviation condition. If so, a normal control signal is generated and sent to the communication control module; otherwise, a normal control signal is generated and sent to the communication control module.

[0024] Furthermore, the motor control unit also includes a control result feedback unit;

[0025] The control result feedback unit is respectively connected to the position deviation calculation unit, the state monitoring module and the communication control module, and is used to obtain the final target deviation according to the position deviation calculation unit and the final position of the transmission shaft, and after comparing the actual state of the pressure plate body with the corresponding expected target state to obtain the target state deviation, it is judged whether the final target deviation and the target state deviation meet the corresponding preset position deviation conditions and preset state deviation conditions respectively. If both are satisfied, a normal control signal is generated and sent to the communication control module. Otherwise, a control abnormality signal is generated and sent to the communication control module.

[0026] Furthermore, the displacement detection unit is a feedback potentiometer; the rotation of the transmission shaft drives the rotation shaft of the feedback potentiometer to rotate.

[0027] In a second aspect, an embodiment of the present invention provides a remote control method for a hard pressure plate in a substation, the method comprising the following steps:

[0028] According to the requirements of the pressure plate, the monitoring host sends the corresponding pressure plate throwing and pulling control instructions;

[0029] In response to the pressure plate throwing and retracting control instruction, a corresponding motor control signal is generated according to the pressure plate throwing and retracting control instruction, and the motor is driven to move according to the motor control signal, so that the transmission shaft drives the pressure plate body to generate rotational movement and / or displacement movement according to the action of the motor, and performs the pressure plate throwing and retracting operation;

[0030] The final position of the transmission shaft after the motor action is completed is obtained, and a corresponding action result signal is generated according to the final position of the transmission shaft, and the action result signal is sent to the monitoring host.

[0031] Further, the step of generating a corresponding action result signal according to the final position of the transmission shaft includes:

[0032] The actual state of the pressure plate body after the motor action is completed is obtained, and an action result signal is generated according to the actual state of the pressure plate body and the final position of the transmission shaft.

[0033] The above-mentioned present application provides a remote control system and method for a substation hard pressure plate, through which the monitoring host sends the pressure plate throwing and retracting control instructions to the motor control module through the communication control module, and the motor control module controls the action of the motor according to the received pressure plate throwing and retracting control instructions, so that the transmission shaft drives the pressure plate body to produce rotational movement and / or displacement movement according to the action of the motor, performs the pressure plate throwing and retracting operation, and generates an action result signal according to the final position of the transmission shaft obtained after the motor action is completed and sends it to the communication control module, and the communication control module sends the received action result signal to the monitoring host. Compared with the prior art, the remote control system for the substation hard pressure plate can realize real-time and accurate feedback control of the final hard pressure plate control state by monitoring the position change of the transmission shaft during the remote control operation of the hard pressure plate throwing and retracting, which can effectively improve the intelligent remote control operation accuracy of the hard pressure plate, realize safe and reliable closed-loop control of the hard pressure plate throwing and retracting, and thus improve the work efficiency of the operation and maintenance personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 Schematic diagram of the structure of the remote control system for the hard pressure plate of a substation in an embodiment of the present invention;

[0035] Figure 2 2 is another structural schematic diagram of a remote control system for a hard pressure plate in a substation according to an embodiment of the present invention;

[0036] Figure 31 is a flow chart of a remote control system for a hard pressure plate in a substation according to an embodiment of the present invention;

[0037] Figure 4 It is another structural schematic diagram of the remote control system of the hard pressure plate of the substation in the embodiment of the present invention;

[0038] Figure 5 It is a schematic flow chart of a remote control method for a hard pressure plate in a substation according to an embodiment of the present invention;

[0039] Figure 6 It is another flow chart of the remote control method of the substation hard pressure plate in an embodiment of the present invention. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical scheme and beneficial effects of the present application clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. Obviously, the embodiments described below are part of the embodiments of the present invention and are only used to illustrate the present invention, but are not used to limit the scope of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] In one embodiment, Figure 1 As shown, a remote control system for a hard pressure plate in a substation is provided, the system comprising a monitoring host 1, a communication control module 2, a motor control module 3, a motor 4, a transmission shaft 5 and a pressure plate body 6;

[0042] The monitoring host 1 is connected to the communication control module 2, and is used to issue pressure plate extension and retraction control instructions and receive corresponding action result signals through the communication control module 2; wherein, the monitoring host 1 can be understood as a host computer used to issue pressure plate extension and retraction control instructions according to the hard pressure plate extension and retraction requirements, and to adjust and control the remote control process according to the monitoring of the actual hard pressure plate extension and retraction status. The equipment that can realize the corresponding functions can be selected according to the actual application requirements.

[0043] The communication control module 2 is connected to the motor control module 3 and the monitoring host 1 respectively, and is used to send the received pressure plate insertion and retraction control instructions to the motor control module 3, and send the action result signal returned by the motor control module 3 to the monitoring host 1; wherein, in principle, the communication control module 2 only needs to meet the communication transmission between the motor control module 3 and the monitoring host 1, and can be constructed based on existing communication methods, such as IEC61850 protocol communication, hard contact (two-point pulse control) or RS485 communication (MODBUS protocol), etc., which are not specifically limited here.

[0044] The motor control module 3 is connected to the communication control module 2 and the motor 4 respectively, and is used to control the action of the motor 4 according to the received pressure plate throwing and retracting control instructions, and generate an action result signal to be sent to the communication control module 2 according to the final position of the transmission shaft obtained after the motor action is completed; wherein the motor 4 provides power for the throwing and retracting operations of the hard pressure plate; the motor control module 3 is the core module of the remote control system of the substation hard pressure plate, which is mainly used to convert the actual pressure plate throwing and retracting control instructions into corresponding motor control signals, and drive the motor 4 to drive the transmission shaft 5 connected to the motor 4 to move to complete the throwing and retracting operations according to the motor control signal, and also monitor the real-time position of the transmission shaft during the throwing and retracting process to correct the position of the pressure plate body through feedback control of the motor, and after the throwing and retracting operations are completed, accurately obtain the actual throwing and retracting position of the pressure plate body to generate a corresponding action result signal to feedback to the monitoring host 1.

[0045] Specifically, in one embodiment, Figure 2 As shown, the motor control module includes a motor control unit 31, a motor drive unit 32 and a displacement detection unit 33;

[0046] The motor control unit 31 is connected to the motor drive unit 32 and the displacement detection unit 33 respectively, and is used to obtain the target position deviation of the transmission shaft 5 by the pressure plate insertion and retraction control instructions and the displacement detection unit 33, and output the motor control signal according to the target position deviation and send it to the motor drive unit 32, and after the motor drive unit 32 completes the driving operation, generate the action result signal and send it to the communication control module 2; the action result signal includes a normal control signal and an abnormal control signal.

[0047] Among them, the motor control unit 31 is mainly responsible for receiving the pressure plate throwing and retracting instructions from the communication control module 2, and converting the pressure plate throwing and retracting instructions into the target position of the transmission shaft, and then calculating the deviation between the target position and the current position of the transmission shaft and outputting the corresponding control signal (PWM signal), and calculating the deviation value in real time during the throwing and retracting operation, adjusting the output control signal according to the deviation, and obtaining the final position of the transmission shaft after the operation is completed, and comparing it with the expected target position, and generating the corresponding action result signal according to the corresponding comparison result: if the final position of the transmission shaft is consistent with the expected target position, a normal control signal is generated, and the operation completion signal and the actual position of the pressure plate body are returned to the communication control module 2, otherwise, a control abnormality signal is returned. Specifically, the motor control unit 31 includes a transmission shaft position calculation unit, a position deviation calculation unit and a controller;

[0048] The transmission shaft position calculation unit is connected to the displacement detection unit, and is used to obtain the current position information through the displacement detection unit, and input the current position obtained by analog-to-digital conversion of the current position information into the position deviation calculation unit; specifically, the transmission shaft position calculation unit includes an A / D conversion unit, which is used to perform analog-to-digital conversion on the current position information input by the displacement detection unit 33 to obtain the corresponding current position.

[0049] The position deviation calculation unit is connected to the transmission shaft position calculation unit and the controller, respectively, and is used to convert the pressure plate insertion and retraction control instructions into the target position of the transmission shaft 5, and calculate the target position deviation based on the target position and the received current position, and input the target position deviation to the controller; the position deviation calculation unit is mainly used to obtain the corresponding target position of the transmission shaft 5 according to the pressure plate insertion and retraction control instructions, and then subtract the target position from the current position to obtain the target position deviation.

[0050] The controller is respectively connected to the position deviation calculation unit and the motor drive unit 32, and is used to generate the motor control signal according to the target position deviation, and send the motor control signal to the motor drive unit 32; wherein, the motor control signal can be understood as a PWM signal, and the corresponding controller is implemented by a single-chip microcomputer, a microcontroller or a dedicated PWM controller. It only needs to be able to generate a motor control signal that can control the motor action to move the hard pressure plate to the target position according to the target position deviation, and no specific limitation is made here.

[0051] The motor drive unit 32 is connected to the motor 4, and is used to adjust the current and voltage of the motor 4 according to the received motor control signal to generate corresponding motor action parameters, and drive the motor 4 to act according to the motor action parameters; wherein the motor action parameters include speed, torque and direction, which are used to achieve precise control of the motor to ensure that the motor can stably perform the insertion and withdrawal operations; wherein the motor drive unit 32 can be implemented using an existing driver chip that can achieve the above-mentioned required functions and ensure that the motor can operate normally as required, and no specific limitation is made here.

[0052] The displacement detection unit 33 is connected to the transmission shaft 5, and is used for detecting the current position information of the transmission shaft 5 in real time, and sending the current position information to the motor control unit 31; the displacement detection unit 33 can be understood as a detection module that simultaneously detects the displacement of the transmission shaft 5 during the insertion and retraction operation to feedback the position change of the hard pressure plate. In this embodiment, the displacement detection unit is preferably set as a feedback potentiometer, and the rotation of the transmission shaft drives the rotation of the shaft of the feedback potentiometer; specifically, the transmission shaft 5 is connected to the feedback potentiometer, and when the transmission shaft rotates and drives the rotation shaft of the position feedback potentiometer, the rotation of the feedback potentiometer shaft causes the voltage value output by it to change, and the current position of the transmission shaft can be determined according to the voltage value output by the feedback potentiometer.

[0053] Correspondingly, in one embodiment, the motor control unit further includes a control result feedback unit;

[0054] The control result feedback unit is connected to the position deviation calculation unit and the communication control module respectively, and is used to obtain the final target deviation according to the position deviation calculation unit and the final position of the transmission shaft, and judge whether the final target deviation meets the preset position deviation condition. If so, a normal control signal is generated and sent to the communication control module, otherwise, a control abnormality signal is generated and sent to the communication control module; wherein, the final target deviation can be understood as the deviation between the final position of the transmission shaft and the target position calculated by inputting the final position of the transmission shaft into the position deviation calculation unit; the corresponding preset position deviation condition can be understood as the deviation range between the actual position of the transmission shaft and the target position after the expected insertion and retraction operation is completed. In principle, the deviation should be required to be 0 for the best, and it can be set according to the actual application requirements in actual application, and is not specifically limited here.

[0055] The transmission shaft 5 is connected to the motor 4 and the pressing plate body 6 respectively, and is used to drive the pressing plate body 6 to generate rotational motion and / or displacement motion according to the action of the motor 4, so as to perform the pressing plate insertion and retraction operation.

[0056] This embodiment provides Figure 3The monitoring host shown sends the pressure plate extension and retraction control instructions to the motor control module through the communication control module, and the motor control module controls the movement of the motor according to the received pressure plate extension and retraction control instructions, so that the transmission shaft drives the pressure plate body to produce rotational movement and / or displacement movement according to the movement of the motor, executes the pressure plate extension and retraction operation, and generates an action result signal based on the final position of the transmission shaft obtained after the motor action is completed and sends it to the communication control module, and the communication control module sends the received action result signal to the monitoring host. The technical solution effectively solves the application defects of the existing hard pressure plate extension and retraction remote control that it is difficult to ensure the reliability of the pressure plate extension and retraction action and cannot make real-time and accurate judgment on the state of the hard pressure plate during the extension and retraction process. By monitoring the position change of the transmission shaft during the hard pressure plate extension and retraction remote control operation, real-time and accurate feedback control of the final hard pressure plate control state can be achieved, which can effectively improve the intelligent remote control operation accuracy of the hard pressure plate, realize safe and reliable hard pressure plate extension and retraction closed-loop control, and thus improve the work efficiency of operation and maintenance personnel.

[0057] In addition, considering that in actual applications, the state of the hard pressure plate in the throwing and retracting operation relying on the transmission shaft position feedback may result in the failure of the displacement detection unit, resulting in the final throwing and retracting state judgment being wrong, this embodiment preferably further adds hard pressure plate state monitoring on the basis of setting the transmission shaft position monitoring, so as to ensure the safety and reliability of the throwing and retracting operation in a double insurance manner; specifically, Figure 4 As shown, a remote control system for a hard pressure plate of a substation is provided, and the system further comprises a status monitoring module 7;

[0058] The state monitoring module 7 is connected to the platen body 6 and the motor control module 3, respectively, and is used to monitor the actual state of the platen body and send the actual state of the platen body to the motor control module 3; wherein, the actual state of the platen body can be understood as the platen position state such as being in, out, or in a virtual position. In order to ensure the reliability of the actual state monitoring of the platen body, the present embodiment preferably adopts the dual-source detection principle to perform dual confirmation detection of the platen state; specifically, the state monitoring module includes an infrared detection unit and a micro switch detection unit, and both the infrared detection unit and the micro switch detection unit can be implemented using existing modules that can realize the corresponding functions, which are not specifically limited here.

[0059] The motor control module 3 is also used to obtain the actual state of the pressure plate body through the state monitoring module 7 after the motor action is completed, generate an action result signal according to the actual state of the pressure plate body and the final position of the transmission shaft, and send it to the communication control module 2; it should be noted that the action result signal in this embodiment can be understood as the final execution result of the insertion and retraction operation action obtained by comprehensive evaluation based on the actual state of the pressure plate body and the final position of the transmission shaft.

[0060] Correspondingly, in one embodiment, the motor control unit further includes a control result feedback unit;

[0061] The control result feedback unit is connected to the position deviation calculation unit, the state monitoring module and the communication control module respectively, and is used to obtain the final target deviation according to the position deviation calculation unit and the final position of the transmission shaft, and after comparing the actual state of the pressure plate body with the corresponding expected target state to obtain the target state deviation, it is judged whether the final target deviation and the target state deviation meet the corresponding preset position deviation conditions and preset state deviation conditions respectively. If both conditions are met, a control normal signal is generated and sent to the communication control module, otherwise, a control abnormal signal is generated and sent to the communication control module; wherein the final target deviation can be It can be understood as the deviation between the final position of the transmission shaft and the target position calculated by inputting the final position of the transmission shaft into the position deviation calculation unit; the target state deviation can be understood as the state deviation obtained by comparing the actual state of the pressure plate body with the corresponding expected target state; correspondingly, the preset position deviation condition can be understood as the deviation range between the actual position of the transmission shaft and the target position after the expected insertion and withdrawal operation is completed, and the preset state deviation condition can be understood as the deviation range between the actual state of the pressure plate body and the expected target state after the expected insertion and withdrawal operation is completed. In principle, the deviations should all be required to be 0, which is optimal. In actual applications, they can be set according to actual application requirements, and no specific limitation is made here.

[0062] The embodiment of the present application sends the pressure plate extension and retraction control instructions to the motor control module through the communication control module by the monitoring host, and the motor control module controls the action of the motor according to the received pressure plate extension and retraction control instructions, so that the transmission shaft drives the pressure plate body to generate rotational motion and / or displacement motion according to the action of the motor, executes the pressure plate extension and retraction operation, and generates an action result signal based on the final position of the transmission shaft and the actual state of the pressure plate body obtained after the motor action is completed, and sends it to the communication control module, and the communication control module sends the received action result signal to the monitoring host. By simultaneously monitoring the position change of the transmission shaft and the position state of the hard pressure plate during the remote control operation of the hard pressure plate extension and retraction, dual-source precise feedback control of the final hard pressure plate control state is achieved, which more effectively ensures the operational accuracy of the intelligent remote control of the hard pressure plate, realizes safe and reliable closed-loop control of the hard pressure plate extension and retraction, improves the work efficiency of operation and maintenance personnel, and effectively improves the level of automated remote control of the secondary pressure plate of the substation, thereby providing strong guarantee for the safe operation of the substation.

[0063] It should be noted that each module in the above-mentioned substation hard pressure plate remote control system can be implemented in whole or in part by software, hardware and their combination. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

[0064] In one embodiment, Figure 5 As shown, a remote control method for a hard pressure plate of a substation is provided, and the method comprises the following steps:

[0065] S11. According to the requirements of the pressure plate, the monitoring host sends the corresponding pressure plate throwing and pulling control instructions;

[0066] S12, in response to the pressure plate throwing and retracting control instruction, generating a corresponding motor control signal according to the pressure plate throwing and retracting control instruction, and driving the motor to move according to the motor control signal, so that the transmission shaft drives the pressure plate body to generate rotational motion and / or displacement motion according to the action of the motor, and performs the pressure plate throwing and retracting operation;

[0067] S13, obtaining the final position of the transmission shaft after the motor action is completed, generating a corresponding action result signal according to the final position of the transmission shaft, and sending the action result signal to the monitoring host.

[0068] Specifically, the step of generating a corresponding action result signal according to the final position of the transmission shaft includes:

[0069] The actual state of the pressure plate body after the motor action is completed is obtained, and an action result signal is generated according to the actual state of the pressure plate body and the final position of the transmission shaft.

[0070] This embodiment adopts Figure 6 The technical solution shown in the figure is that according to the pressure plate extension and retraction requirements, the monitoring host sends the corresponding pressure plate extension and retraction control instructions, generates the corresponding motor control signal according to the pressure plate extension and retraction control instructions, and drives the motor to act according to the motor control signal, so that the transmission shaft drives the pressure plate body to produce rotational motion and / or displacement motion according to the action of the motor, executes the pressure plate extension and retraction operation, obtains the final position of the transmission shaft after the motor action is completed, generates the corresponding action result signal according to the final position of the transmission shaft, and sends the action result signal to the monitoring host. By monitoring the position change of the transmission shaft during the remote control operation of the hard pressure plate extension and retraction, real-time and accurate feedback control of the final hard pressure plate control state can be achieved, which can effectively improve the intelligent remote control operation accuracy of the hard pressure plate, realize safe and reliable closed-loop control of the hard pressure plate extension and retraction, and thus improve the work efficiency of operation and maintenance personnel.

[0071] It should be noted that, although the various steps in the above flowchart are displayed in sequence as indicated by the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified in this document, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. For the specific definition of the remote control method of the substation hard pressure plate, please refer to the definition of the remote control system of the substation hard pressure plate above, and the corresponding technical effects can also be obtained equivalently, which will not be repeated here.

[0072] In summary, an embodiment of the present invention provides a remote control system and method for a substation hard pressure plate, wherein the remote control system for the substation hard pressure plate realizes that the monitoring host sends the pressure plate extension and retraction control instructions to the motor control module through the communication control module, and the motor control module controls the action of the motor according to the received pressure plate extension and retraction control instructions, so that the transmission shaft drives the pressure plate body to generate rotational motion and / or displacement motion according to the action of the motor, executes the pressure plate extension and retraction operation, and generates an action result signal based on the final position of the transmission shaft obtained after the motor action is completed and sends it to the communication control module, and the communication control module sends the received action result signal to the monitoring host. The technical solution, the system realizes real-time and precise feedback control of the final hard pressure plate control state by monitoring the position change of the transmission shaft during the remote control operation of the hard pressure plate extension and retraction, which can effectively improve the intelligent remote control operation accuracy of the hard pressure plate, realize safe and reliable closed-loop control of the hard pressure plate extension and retraction, and thereby improve the work efficiency of operation and maintenance personnel.

[0073] Each embodiment in this specification is described in a progressive manner, and the same or similar parts of each embodiment can be directly referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment. It should be noted that the technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0074] The above-mentioned embodiments only express several preferred implementation modes of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in the technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be regarded as the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be based on the protection scope of the claims.

Claims

1. A remote control system for a hard pressure plate in a substation, characterized in that: The system includes a monitoring host, a communication control module, a motor control module, a motor, a transmission shaft and a pressing plate body; The monitoring host is connected to the communication control module and is used to issue a pressure plate throwing and retracting control instruction and receive a corresponding action result signal through the communication control module; The communication control module is connected to the motor control module and the monitoring host respectively, and is used to send the received pressure plate throwing and retracting control instructions to the motor control module, and send the action result signal returned by the motor control module to the monitoring host; The motor control module is connected to the communication control module and the motor, respectively, and is used to control the action of the motor according to the received pressure plate throwing and retracting control instruction, and generate an action result signal according to the final position of the transmission shaft obtained after the motor action is completed, and send it to the communication control module; The transmission shaft is connected to the motor and the pressing plate body respectively, and is used to drive the pressing plate body to generate rotational motion and / or displacement motion according to the action of the motor, so as to perform the pressing plate insertion and retraction operation.

2. The remote control system for the hard pressure plate of a substation according to claim 1, characterized in that: The system also includes a status monitoring module; The state monitoring module is connected to the pressing plate body and the motor control module respectively, and is used to monitor the actual state of the pressing plate body and send the actual state of the pressing plate body to the motor control module; The motor control module is also used to obtain the actual state of the pressure plate body through the state monitoring module after the motor action is completed, generate an action result signal according to the actual state of the pressure plate body and the final position of the transmission shaft, and send it to the communication control module.

3. The remote control system for the hard pressure plate of a substation according to claim 2, characterized in that: The state monitoring module includes an infrared detection unit and a micro switch detection unit.

4. The remote control system for the substation hard pressure plate according to claim 1 or 2, characterized in that: The motor control module includes a motor control unit, a motor drive unit and a displacement detection unit; The motor control unit is connected to the motor drive unit and the displacement detection unit respectively, and is used to obtain the target position deviation of the transmission shaft from the pressure plate throwing and retracting control instruction and the displacement detection unit, and output a motor control signal according to the target position deviation and send it to the motor drive unit, and after the motor drive unit completes the driving operation, generate the action result signal and send it to the communication control module; the action result signal includes a control normal signal and a control abnormal signal; The motor drive unit is connected to the motor and is used to adjust the current and voltage of the motor according to the received motor control signal to generate corresponding motor action parameters, and drive the motor to act according to the motor action parameters; the motor action parameters include speed, torque and direction; The displacement detection unit is connected to the transmission shaft and is used to detect the current position information of the transmission shaft in real time and send the current position information to the motor control unit.

5. The remote control system for the hard pressure plate of a substation according to claim 4, characterized in that: The motor control unit includes a transmission shaft position calculation unit, a position deviation calculation unit and a controller; The transmission shaft position calculation unit is connected to the displacement detection unit, and is used to obtain the current position information through the displacement detection unit, and input the current position obtained by analog-to-digital conversion of the current position information into the position deviation calculation unit; The position deviation calculation unit is connected to the transmission shaft position calculation unit and the controller respectively, and is used to convert the pressure plate throwing and retracting control instruction into the target position of the transmission shaft, and calculate the target position deviation according to the target position and the received current position, and input the target position deviation to the controller; The controller is connected to the position deviation calculation unit and the motor drive unit respectively, and is used to generate the motor control signal according to the target position deviation, and send the motor control signal to the motor drive unit.

6. The remote control system for the hard pressure plate of a substation according to claim 5, characterized in that: The motor control unit also includes a control result feedback unit; The control result feedback unit is connected to the position deviation calculation unit and the communication control module, respectively, and is used to obtain the final target deviation based on the position deviation calculation unit and the final position of the transmission shaft, and determine whether the final target deviation meets the preset position deviation condition. If so, a normal control signal is generated and sent to the communication control module; otherwise, a normal control signal is generated and sent to the communication control module.

7. The remote control system for the hard pressure plate of a substation according to claim 5, characterized in that: The motor control unit also includes a control result feedback unit; The control result feedback unit is respectively connected to the position deviation calculation unit, the state monitoring module and the communication control module, and is used to obtain the final target deviation according to the position deviation calculation unit and the final position of the transmission shaft, and after comparing the actual state of the pressure plate body with the corresponding expected target state to obtain the target state deviation, it is judged whether the final target deviation and the target state deviation meet the corresponding preset position deviation conditions and preset state deviation conditions respectively. If both are satisfied, a normal control signal is generated and sent to the communication control module. Otherwise, a control abnormality signal is generated and sent to the communication control module.

8. The remote control system for the hard pressure plate of a substation according to claim 1 or 2, characterized in that: The displacement detection unit is a feedback potentiometer; the rotation of the transmission shaft drives the rotation shaft of the feedback potentiometer.

9. A remote control method for a hard pressure plate in a substation, characterized in that: The method comprises the following steps: According to the requirements of the pressure plate, the monitoring host sends the corresponding pressure plate throwing and pulling control instructions; In response to the pressure plate throwing and retracting control instruction, a corresponding motor control signal is generated according to the pressure plate throwing and retracting control instruction, and the motor is driven to move according to the motor control signal, so that the transmission shaft drives the pressure plate body to generate rotational movement and / or displacement movement according to the action of the motor, and performs the pressure plate throwing and retracting operation; The final position of the transmission shaft after the motor action is completed is obtained, and a corresponding action result signal is generated according to the final position of the transmission shaft, and the action result signal is sent to the monitoring host.

10. The remote control method for the hard pressure plate of a substation according to claim 9, characterized in that: The step of generating a corresponding action result signal according to the final position of the transmission shaft comprises: The actual state of the pressure plate body after the motor action is completed is obtained, and an action result signal is generated according to the actual state of the pressure plate body and the final position of the transmission shaft.

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