Restarting method and system capable of realizing remote control

Abstract

The invention relates to the technical field of power equipment restarting, in particular to a restarting method and system capable of achieving remote control, and the method comprises the steps: remotely sending a restarting command to a transformer substation, and achieving the remote restarting of equipment; a restart button is controlled through a handle QC, and the control state is switched; the restart button is connected with the equipment power supply through the normally closed contact relay, so that the equipment power supply is always in a normal operation state; and when a remote restart command is received, the relay cuts off the power supply, so that the equipment is subjected to hard restart. The method has the advantages that operation and maintenance personnel can freely select whether to go to the site for restarting according to the position of the power station by remotely or locally controlling the restarting button, labor cost and time consumption are greatly reduced, meanwhile, abrasion caused by frequent manual restarting of equipment is reduced by simplifying the restarting process, the service life of the equipment is prolonged, and in addition, the service life of the equipment is prolonged. Through a quick-response restart mechanism, the risk of power supply interruption is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of restarting electric equipment, and in particular to a restarting method and system capable of realizing remote control. Background Art

[0002] In modern power systems, many key equipment often encounter various technical problems due to long-term continuous operation and service. These problems include but are not limited to crashes, communication interruptions, data transmission errors, etc., which seriously affect the stability and reliability of the power system. According to statistics, about 80% of such problems can be solved by simple restart operations. However, the traditional restart method requires operation and maintenance personnel to go to the site in person and manually restart the equipment, which is not only inefficient but also costly. Since many substations are located in remote areas, operation and maintenance personnel need to travel long distances to reach the site, which not only takes a lot of time, but also increases the difficulty and risk of operation and maintenance. In addition, due to the particularity of the installation location of some equipment, such as high places or small spaces, it is difficult for operation and maintenance personnel to directly contact and operate, which further increases the difficulty of on-site restart. Under extreme weather conditions, such as heavy rain, heavy snow or high temperature, the work of on-site restart becomes more difficult and dangerous. In addition, frequent on-site restart operations will also cause additional wear and tear on the equipment and shorten the service life of the equipment. At the same time, since on-site restart requires power off, this will also cause a brief interruption in power supply, affecting the continuity of the power system and the user's power experience. Summary of the invention

[0003] In view of the above problems or problems existing in the prior art, the present invention is proposed.

[0004] Therefore, the purpose of the present invention is to provide a remote control restart method, which can solve the problems of low efficiency and high cost of on-site manual restart methods, as well as difficulties and risks in operating equipment that is difficult to directly access.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a remote control restart method, which includes sending a restart command to the substation remotely to realize the remote restart of the equipment;

[0006] Switch the control state by pressing the QC control restart button on the handle;

[0007] The restart button is connected to the equipment power supply through a normally closed contact relay, so that the equipment power supply is always in normal operating state;

[0008] When a remote restart command is received, the relay removes power, causing the device to perform a hard restart.

[0009] As a preferred solution of the remote remote control restart method of the present invention, the core of the remote restart function is the remote control of the equipment in the substation. If the telemetry data of the equipment is abnormal, a remote restart command is sent to restart the equipment.

[0010] As a preferred solution of the remote control restart method of the present invention, the restart button includes two control states: "remote" and "local". In the "remote" state, the handle QC is grounded to the measurement and control device, the remote control contact of the measurement and control device is closed, and the positive power supply end of the control loop starts the relay; in the "local" state, the local position contact of the handle QC is connected to the local button SB1, the local button SB1 is closed, and the positive power supply end of the control loop starts the relay.

[0011] As a preferred solution of the remote control restart method of the present invention, the normally closed contact relay includes an electromagnet and one or more contacts with normally closed contacts; when the electromagnet is not energized, the contacts remain in a closed state, that is, the normally closed contacts are connected; when the electromagnet is energized, a magnetic force is generated to attract the moving contact of the contact system, causing it to move from the normally closed position to the normally open position, thereby disconnecting the circuit.

[0012] As a preferred solution of the remote control restart method of the present invention, the hard restart includes: when a remote restart command is received, the relay is activated, the power is disconnected for a period of time, and the hard restart of the device is achieved through power-off delay, so that the device function is quickly restored.

[0013] In order to solve the above technical problems, the present invention also provides the following technical solutions: a restart system capable of realizing remote control, comprising a control module, a communication module connected to the control module, an execution module connected to the communication module, a safety module connected to a power supply, and a monitoring module connected to the execution module;

[0014] The control module is connected with the execution module.

[0015] As a preferred solution of the present invention that can realize the remote control restart system, the control module includes a remote control panel, a handle QC connected to the remote control panel, and a local button SB1;

[0016] The remote control panel is used to send a restart command to the device;

[0017] The handle QC is used to switch the control mode, including "remote" and "local" states.

[0018] As a preferred solution of the present invention for realizing a remotely controlled restart system, the communication module includes an intra-station communication device and a data transmission network;

[0019] The in-station communication device connects the remote motor and the measurement and control device to ensure the accurate transmission of commands; the data transmission network includes a wireless network for transmitting remote control commands.

[0020] As a preferred solution of the remote control restart system of the present invention, the execution module includes a remote motor, a normally closed contact relay, and a time relay;

[0021] The remote motor is connected to the normally closed contact relay through a control line, and the output end of the time relay is connected to the control circuit of the normally closed contact relay.

[0022] As a preferred solution of the present invention that can realize remote control restart system, the safety module includes a screen cabinet and a terminal block arranged inside the screen cabinet; the monitoring module includes a measurement and control device.

[0023] Beneficial effects of the present invention: The present invention controls the restart button remotely or locally, and the operation and maintenance personnel can freely choose whether to go to the site to restart according to the location of the power station, which greatly reduces labor costs and time consumption. At the same time, by simplifying the restart process, the wear of the equipment caused by frequent manual restart is reduced, and the life of the equipment is extended. In addition, through the quick-response restart mechanism, the risk of power supply interruption is reduced, the continuity of the system and the user's power experience are improved, and a strong guarantee is provided for the stable operation of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0025] Figure 1 The figure is a flowchart of a restart method capable of realizing remote control.

[0026] Figure 2 This is a schematic diagram of the control principle of a restart system that can be remotely controlled.

[0027] Figure 3 This is the first implementation method of a restart system that can realize remote control.

[0028] Figure 4 This is the second implementation method of the restart system that can realize remote control.

[0029] Figure 5 This is a schematic diagram of the restart button connection circuit of a restart system that can be restarted remotely. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0033] Example 1

[0034] Reference Figure 1 , is an embodiment of the present invention, which provides a remote control restart method, which can solve the problems of low efficiency and high cost of on-site manual restart methods, and the difficulty and risk of operating equipment that is difficult to directly access.

[0035] Specifically, the equipment is remotely restarted by remotely sending a restart command to the substation;

[0036] By pressing the QC control restart button, the two control states of "remote" and "local" can be switched;

[0037] The restart button is connected to the equipment power supply through a normally closed contact relay, so that the equipment power supply is always in normal operating state;

[0038] When a remote restart command is received, the relay removes power, causing the device to perform a hard restart.

[0039] It should be noted that the restart command sent remotely is generated by the OPEN3000 system.

[0040] When in use, the operation and maintenance personnel use a handle QC to switch the restart button, switching between the "remote" and "local" control states according to different operation requirements. The restart button is connected to the device power supply through a normally closed contact relay, so that the device power supply is always in normal operating state; when the device receives a remote restart command, the relay disconnects the power supply and causes the device to perform a hard restart. When the power dispatching center finds that a device (such as a switch or measurement and control device) in the substation has a deadlock or communication interruption problem through the monitoring system, the operation and maintenance personnel use the OPEN3000 system in the power dispatching center to generate a restart command. The restart command is transmitted to the remote motor in the substation through the communication network inside the power system. After receiving the restart command, the remote motor sends a restart instruction to the target measurement and control device through the station communication device. After the measurement and control device receives the restart instruction, its internal remote control contact closes, triggering the normally closed contact relay connected to it. At this time, the coil of the relay is energized, causing the internal moving contact to move from the normally closed position to the normally open position, thereby cutting off the power supply of the device. At the same time, the time relay starts timing, which is usually set to about 10 seconds. When the delay ends, the output of the time relay changes state, causing the relay coil to lose power, and the moving contact returns to the normally closed position, restoring the power supply of the device, and realizing a hard restart of the device. When the device restarts, the monitoring system of the power dispatching center will monitor the recovery of the device and confirm whether the restart is successful.

[0041] When the operation and maintenance personnel find a problem with the device on site, they will switch the handle QC to the local control state and directly press the local button SB1. At this time, the control circuit is connected, the relay is directly started, the relay coil is energized, and the moving contact disconnects the power supply of the device. At this time, if a delayed restart is required, the time relay starts timing. When the delay is over, the output of the time relay changes, the relay coil loses power, the moving contact closes, the power supply of the device is restored, and the restart is realized. After the restart, the operation and maintenance personnel confirm on site whether the device has resumed normal operation.

[0042] In summary, the present invention controls the restart button remotely or locally, and the operation and maintenance personnel can freely choose whether to go to the site to restart according to the location of the power station, which greatly reduces labor costs and time consumption. At the same time, by simplifying the restart process, the wear of the equipment caused by frequent manual restart is reduced, and the life of the equipment is extended. In addition, through the quick-response restart mechanism, the risk of power supply interruption is reduced, the continuity of the system and the user's power experience are improved, and a strong guarantee is provided for the stable operation of the power system.

[0043] Example 2

[0044] Reference Figure 1, which is the second embodiment of the present invention, provides a remote control restart method, which can solve the problems of low efficiency and high cost of on-site manual restart methods, as well as difficulties and risks in operating equipment that is difficult to directly access.

[0045] Specifically, the equipment is remotely restarted by remotely sending a restart command to the substation;

[0046] Switch the control state by pressing the QC control restart button on the handle;

[0047] The restart button uses a normally closed contact relay to keep the device power supply in normal operation at all times;

[0048] When a remote restart command is received, the relay removes power, causing the device to perform a hard restart.

[0049] Furthermore, the core of the remote restart function is the remote control of the equipment in the substation. If the telemetry data of the equipment is abnormal, a remote restart command is sent to restart the equipment.

[0050] It should be noted that the restart command is transmitted through the remote motor at the plant station end, and the remote motor sends the restart command to the measurement and control device through the station communication device, which eventually closes the remote control restart button contacts of the measurement and control device to achieve a hard restart of the equipment.

[0051] Furthermore, the restart button includes two control states: "remote" and "local". In the "remote" state, handle QC is grounded to the measurement and control device, the remote control contacts of the measurement and control device are closed, and the positive power supply end of the control loop starts the relay; in the "local" state, the local position contact of handle QC is connected to the local button SB1, the local button SB1 is closed, and the positive power supply end of the control loop starts the relay.

[0052] It should be noted that the normally closed contact relay is set inside the restart button, and the device power needs to pass through this normally closed contact. When the relay coil is energized, its internal contacts will move from the normally closed position to the normally open position, thereby cutting off the power supply and restarting the device.

[0053] When equipment in a power substation needs to be restarted due to a fault, the normally closed contacts of the normally closed contact relay are always connected to the power supply of the equipment. When a remote or local restart command triggers the relay coil to be energized, its internal contacts are disconnected, cutting off the power supply, and the device is powered off and restarted, and the fault is restored.

[0054] Furthermore, the normally closed contact relay includes an electromagnet and one or more contacts with normally closed contacts; when the electromagnet is not energized, the contacts remain in a closed state, that is, the normally closed contacts are connected; when the electromagnet is energized, a magnetic force is generated to attract the moving contact of the contact system, causing it to move from the normally closed position to the normally open position, thereby disconnecting the circuit.

[0055] Furthermore, the hard restart includes that when a remote restart command is received, the relay is activated, the power supply is disconnected for a period of time, and the hard restart of the device is achieved through power-off delay, so that the device function is quickly restored.

[0056] In summary, the present invention controls the restart button remotely or locally, and the operation and maintenance personnel can freely choose whether to go to the site to restart according to the location of the power station, which greatly reduces labor costs and time consumption. At the same time, by simplifying the restart process, the wear of the equipment caused by frequent manual restart is reduced, and the life of the equipment is extended. In addition, through the quick-response restart mechanism, the risk of power supply interruption is reduced, the continuity of the system and the user's power experience are improved, and a strong guarantee is provided for the stable operation of the power system.

[0057] Example 3

[0058] Reference Figure 2 to Figure 5 , which is the third embodiment of the present invention, provides a restart system capable of realizing remote control, which can improve the monitoring and control accuracy of the tap changer, reduce the occurrence of accidents, and provide convenience for prediction and maintenance.

[0059] Specifically, a control module 100, a communication module 200 connected to the control module 100, an execution module 300 connected to the communication module 200, a safety module 400 connected to a power source, and a monitoring module 500 connected to the execution module 300;

[0060] The control module 100 is connected to the execution module 300 .

[0061] Further, the control module 100 includes a remote control panel 101, a handle QC102 connected to the remote control panel 101, and a local button SB1103 connected to the remote control panel 101;

[0062] The remote control panel 101 is used to send a restart command to the device;

[0063] The handle QC102 is used to switch the control mode, including "remote" and "local" states.

[0064] It should be noted that the remote control panel 101 is provided with an OPEN3000 system, and the restart command is sent through the OPEN3000 system.

[0065] Further, the communication module 200 includes an intra-station communication device 201, and a data transmission network 202;

[0066] The in-station communication device 201 connects the remote motor 301 and the measurement and control device 501 to ensure accurate transmission of commands; the data transmission network 202 includes a wireless network for transmitting remote control commands.

[0067] It should be noted that the intra-station communication device 201 is used to transmit control commands, telemetry data, status signals, etc. between the remote motor 301, the measurement and control device 501, the relay protection device, the intelligent terminal, etc., including fiber-optic Ethernet, wireless local area network (WLAN), serial communication interface (such as RS-232, RS-485) and other categories.

[0068] Further, the execution module 300 includes a remote motor 301, a normally closed contact relay 302, and a time relay 303;

[0069] The remote motor 301 is connected to the normally closed contact relay 302 through a control line, and the output end of the time relay 303 is connected to the control circuit of the normally closed contact relay 302.

[0070] It should be noted that the normally closed contact relay 302 is used in conjunction with the time relay 303 to realize the function of delayed disconnection of the power supply, that is, the relay delays for a period of time before disconnecting the power supply after receiving the restart command. The delay time can be set between 0 and 20 seconds as needed. The normally closed contact relay 302 usually includes an electromagnet and one or more contacts with normally closed contacts. When no current passes through the electromagnet, the contacts remain closed, that is, the normally closed contacts are connected.

[0071] When the electromagnet is energized, a magnetic force is generated to attract the moving contact of the contact system, causing it to move from the normally closed position to the normally open position, thereby disconnecting the circuit.

[0072] Furthermore, the safety module 400 includes a screen cabinet 401 and a terminal block 402 arranged inside the screen cabinet 401 ; the monitoring module 500 includes a measurement and control device 501 .

[0073] It should be noted that the remote control panel 101 is arranged on the surface of the screen cabinet 401. The remote control panel 101 is provided with a restart button. The restart button is the terminal button of the staff control handle QC102 and the local button SB1103. The restart button is designed to be snap-on and can be directly snapped on the rear terminal block 402 of the screen cabinet 401, saving space and cables. Only one set of control wires is required to be connected to the button relay. Among them, the size of the restart button should be consistent with the rear terminal block 402 of the screen cabinet 401 for easy installation.

[0074] During use, when local operation is required, the maintenance personnel can operate the control handle QC102 to the "local" state through the remote control panel 101. At this time, the maintenance personnel only need to directly press the restart button to power off and restart the corresponding equipment; when remote control is required to maintain the "remote control" state, the remote operator remotely sends a restart command to the measurement and control device 501, and the internal contact of the measurement and control device 501 closes to drive the internal relay of the restart button to operate, and the power supply is properly disconnected for about 10 seconds to achieve the effect of powering off and restarting the device. In summary, the present invention controls the restart button remotely or locally, and the operation and maintenance personnel can freely choose whether to go to the site to restart according to the location of the power station, which greatly reduces labor costs and time consumption. At the same time, by simplifying the restart process, the wear of the equipment caused by frequent manual restart is reduced, and the life of the equipment is extended. In addition, through the fast-response restart mechanism, the risk of power supply interruption is reduced, the continuity of the system and the user's power experience are improved, and a strong guarantee is provided for the stable operation of the power system.

[0075] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible without substantially departing from the novel teachings and advantages of the subject matter described in the application (e.g., mounting arrangements, use of materials, color, changes in orientation, etc.). For example, the element shown as integrally formed may be composed of a plurality of parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete element may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to an alternative embodiment. In the claims, any "bracket plus function" clause is intended to cover the structure of the execution function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to a variety of modifications that still fall within the scope of the appended claims.

[0076] Additionally, in an effort to provide a concise description of example embodiments, all features of an actual implementation may not be described.

[0077] It should be understood that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but for those of ordinary skill having the benefit of this disclosure, the development effort will be a routine task of design, fabrication, and production without undue experimentation.

[0078] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A remote control restart method, characterized in that: include, Remotely restart the equipment by sending a restart command to the substation; Switch the control state by pressing the QC control restart button on the handle; The restart button is connected to the equipment power supply through a normally closed contact relay, so that the equipment power supply is always in normal operating state; When a remote restart command is received, the relay removes power, causing the device to perform a hard restart.

2. The remote control restart method according to claim 1, characterized in that: The core of the remote restart function is the remote control of the equipment in the substation. If the telemetry data of the equipment is abnormal, a remote restart command is sent to restart the equipment.

3. The remote control restart method according to claim 2, characterized in that: The restart button includes two control states: "remote" and "local". In the "remote" state, the handle QC is grounded to the measurement and control device, the remote control contact of the measurement and control device is closed, and the positive power supply end of the control loop starts the relay; in the "local" state, the local position contact of the handle QC is connected to the local button SB1, the local button SB1 is closed, and the positive power supply end of the control loop starts the relay.

4. The remote control restart method according to claim 3, characterized in that: The normally closed contact relay includes an electromagnet and one or more contacts with normally closed contacts; when the electromagnet is not energized, the contacts remain in a closed state, that is, the normally closed contacts are connected; when the electromagnet is energized, a magnetic force is generated to attract the moving contact of the contact system, causing it to move from the normally closed position to the normally open position, thereby disconnecting the circuit.

5. The remote control restart method according to claim 4, characterized in that: The hard restart includes that when a remote restart command is received, a relay is actuated to disconnect the power supply for a period of time, and a hard restart of the device is achieved through power-off delay, so that the device function is quickly restored.

6. A remote control restart system, applicable to a remote control restart method, characterized in that: include, A control module (100), a communication module (200) connected to the control module (100), an execution module (300) connected to the communication module (200), a safety module (400) connected to a power source, and a monitoring module (500) connected to the execution module (300); The control module (100) is connected to the execution module (300).

7. The remote control restart system according to claim 6, characterized in that: The control module (100) comprises a remote control panel (101), a handle QC (102) connected to the remote control panel (101), and a local button SB1 (103); The remote control panel (101) is used to send a restart command to the device; The handle QC (102) is used to switch the control mode, including two states: "remote" and "local".

8. The remote control restart system according to claim 7, characterized in that: The communication module (200) comprises an intra-station communication device (201) and a data transmission network (202); The in-station communication device (201) connects the remote motor (301) and the measurement and control device (501) to ensure accurate transmission of commands; the data transmission network (202) includes a wireless network for transmitting remote control commands.

9. The remote control restart system according to claim 8, characterized in that: The execution module (300) includes a remote motor (301), a normally closed contact relay (302), and a time relay (303); The remote motor (301) is connected to the normally closed contact relay (302) via a control line, and the output end of the time relay (303) is connected to the control circuit of the normally closed contact relay (302).

10. The remote control restart system according to claim 9, characterized in that: The safety module (400) comprises a screen cabinet (401) and a terminal block (402) arranged inside the screen cabinet (401); the monitoring module (500) comprises a measurement and control device (501).

Images