Online monitoring device and monitoring method for disconnection of power remote channel

Abstract

The application provides a kind of power remote channel broken line on-line monitoring device and monitoring method, it belongs to electric power technical field, the device includes: switching module, including input, first output and second output;Wherein, input is connected with remote device, first output is connected with main remote channel, second output is connected with spare remote channel, one end of main remote channel and spare remote channel away from switching module is connected with dispatching device;Fault detection module is used to collect the voltage of main remote channel and obtain the running state of main remote channel according to the voltage;Control module is connected with fault detection module and switching module respectively, for controlling input by switching from being connected with first output to being connected with second output when main remote channel is in broken line state.The application can automatically monitor the running state of main remote channel, and enable spare remote channel in time when main remote channel is broken, to ensure the normal communication of remote device and dispatching device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric power, in particular to an online monitoring device and method for disconnection of an electric power remote channel. BACKGROUND

[0002] With the rapid development of smart grids, unattended substations have become an important part of modern power systems. In this mode, dispatchers need to rely on remote devices to realize remote monitoring and operation of substations. As the core equipment connecting substations and dispatchers, remote devices play a key role in "connecting the upper and lower": on the one hand, they upload telemetry and telecommunication signals from substations to dispatchers, and on the other hand, they issue remote control instructions from dispatchers to substations for execution.

[0003] The transmission channel of the signals uploaded by the remote device and the instructions received is also called an electric power remote channel. Existing electric power remote channels mainly use optical fiber communication. However, as the transmission distance increases, the risk of failure of optical fiber communication increases significantly. Long-distance optical fibers are easily affected by signal interference, transmission loss and other factors, resulting in a decline in communication quality or even disconnection, which seriously threatens the real-time communication reliability between the remote device and the dispatcher.

[0004] To solve the above problems, the existing Chinese patent CN114709925A proposes a method for counting the number of remote channel switching times. Although this method can determine the channel state by analyzing message data, it still has obvious limitations: first, the message disassembly process takes a long time and cannot meet the real-time requirements; second, when the communication message is encrypted, the judgment mechanism of this method may fail, seriously affecting the reliability of fault detection.

[0005] Therefore, it is of great practical value to develop a technical solution that can automatically detect the disconnection of an electric power remote channel and timely restore communication when a fault occurs, to ensure the stable operation of the power system. SUMMARY

[0006] To solve the above technical problems, the present application provides an online monitoring device and method for disconnection of an electric power remote channel, which can automatically detect disconnection faults of an electric power remote channel and timely restore communication between a remote device and a dispatcher when a fault occurs. The technical solution is as follows:

[0007] In a first aspect, an online monitoring device for disconnection of an electric power remote channel is provided, comprising:

[0008] A switching module includes an input end, a first output end and a second output end. The input end is connected to a remote device, the first output end is connected to a main remote channel, and the second output end is connected to a backup remote channel. One end of the main remote channel and the backup remote channel away from the switching module is connected to a dispatcher device.

[0009] The fault detection module comprises a voltage acquisition submodule and a comparison submodule, the acquisition end of the voltage acquisition submodule is arranged on the main remote channel, and the voltage of the main remote channel is acquired; the comparison submodule obtains the running state of the main remote channel according to the voltage, and the running state is any one of the broken line state and the conduction state;

[0010] The control module is connected with the switching module and the fault detection module respectively, and is used for controlling the input end to be switched from being connected with the first output end to being connected with the second output end when the main remote channel is in the broken line state.

[0011] In a possible implementation, the switching module further comprises a U-shaped support, an electromagnet, a magnetic induction piece and an insulating plate;

[0012] The electromagnet is located in the internal cavity of the U-shaped support and is fixedly connected with at least one inner wall of the U-shaped support;

[0013] The magnetic induction piece is arranged close to the open end of the U-shaped support, one end of the magnetic induction piece is hingedly connected with the side wall of the open end of the U-shaped support, and the end of the magnetic induction piece hingedly connected with the U-shaped support serves as the input end of the switching module;

[0014] The insulating plate is arranged on the side wall of the open end of the U-shaped support and is opposite to the side wall where the input end is located, the first output end and the second output end are both arranged on the plate surface of the insulating plate facing the input end, and the first output end is located directly below the second output end;

[0015] The other end of the magnetic induction piece extends towards the insulating plate and is located between the first output end and the second output end, and the end of the magnetic induction piece between the first output end and the second output end serves as a movable end, the movable end is subjected to the magnetic force of the magnetic field generated by the electromagnet, and is switched between being connected with the first output end and being connected with the second output end.

[0016] In a possible implementation, the movable end is spaced apart for a specified time when being switched between being connected with the first output end and being connected with the second output end.

[0017] In a possible implementation, the movable end comprises a lower end surface and an upper end surface, the lower end surface is arranged towards the first output end, and the upper end surface is arranged towards the second output end.

[0018] The lower end face is provided with three first contacts, the first output end is provided with a second contact corresponding to each of the first contacts, and when the movable end is connected to the first output end, the three first contacts on the lower end face are in contact with the corresponding second contacts respectively;

[0019] The upper end face is provided with three third contacts, the second output end is provided with a fourth contact corresponding to each of the third contacts, and when the movable end is connected to the second output end, the three third contacts on the upper end face are in contact with the corresponding fourth contacts respectively.

[0020] In a possible implementation, the main telecontrol channel is formed by two wires being twisted together;

[0021] The voltage acquisition submodule is an RSM485 chip, the RSM485 chip includes an A terminal and a B terminal, and the A terminal and the B terminal are both acquisition terminals of the RSM485 chip;

[0022] The A terminal is connected with one of the wires in the main telecontrol channel, and is configured to acquire the voltage on the wire;

[0023] The B terminal is connected with the other wire in the main telecontrol channel, and is configured to acquire the voltage on the other wire.

[0024] In a possible implementation, the RSM485 chip further includes a TXD terminal, and the TXD terminal is configured to send the voltages of the two wires to the comparison submodule respectively;

[0025] The comparison submodule compares the voltages on the two wires, and when the voltages on the two wires are equal, it is determined that the main telecontrol channel is in a broken wire state.

[0026] In a possible implementation, a communication module is further included, and the control module remotely communicates with the dispatching device or a PC through the communication module.

[0027] In a possible implementation, an indication module is further included, and the indication module includes a first indication lamp and a second indication lamp, and the first indication lamp and the second indication lamp are both connected with the control module;

[0028] The control module is configured to:

[0029] When the main telecontrol channel is in a conduction state, control the first indication lamp to light up;

[0030] When the standby telecontrol channel is in a conduction state, control the second indication lamp to light up.

[0031] In a second aspect, a method for monitoring disconnection of a power remote channel is provided, which is executed by the device for monitoring disconnection of the power remote channel as described in any of the above aspects, and comprises:

[0032] collecting voltage of the main remote channel to obtain an operating state of the main remote channel;

[0033] when the main remote channel is in a disconnection state, determining whether the input end is connected to the second output end;

[0034] if yes, detecting an operating state of the backup remote channel, and when the operating state of the backup remote channel is in a conduction state, using the backup remote channel as a transmission channel for information interaction between the remote device and the dispatching device;

[0035] if no, sending a switching request to the dispatching device, and when a switching instruction returned by the dispatching device is received, controlling the input end to be connected to the second output end, detecting the operating state of the backup remote channel, and when the operating state of the backup remote channel is in the conduction state, using the backup remote channel as the transmission channel for information interaction between the remote device and the dispatching device.

[0036] In a possible implementation, when the main remote channel is in the conduction state, the method further comprises:

[0037] retrieving the operating state of the main remote channel at the last monitoring time;

[0038] if the main remote channel is in the disconnection state at the last monitoring time, executing an anti-jitter algorithm, the anti-jitter algorithm being used to calculate an interval specified time, the interval specified time being an interval duration when the input end of the switching module is switched from being connected to the first output end to being connected to the second output end.

[0039] The technical scheme provided by the embodiments of the present application can achieve the following technical effects:

[0040] (1) The present application is provided with a fault detection module, a switching module and a control module. The fault detection module is used to monitor the operating state of the main remote channel in real time, and when the main remote channel is in a disconnection state, the control module controls the switching module to enable the backup remote channel to maintain normal communication between the remote device and the dispatching device, thereby achieving the purpose of automatically detecting disconnection fault of the power remote channel and timely restoring communication between the remote device and the dispatching device when the fault occurs.

[0041] (2) The application sets three groups of contacts corresponding to each direction of the movable end, avoiding the problem of setting a relay on each line, reducing the number of relays, and reducing the size of the device. At the same time, when the magnetic induction piece moves vertically, the terminals on the movable end will be in contact with the terminals on the first output end and the second output end, respectively, reducing the switching stroke and ensuring that the standby remote channel is enabled in time when the main remote channel is disconnected. Further, by deploying an anti-shaking algorithm in the control module, an interval specified time is obtained when the anti-shaking algorithm is executed, and the interval specified time is used to control the interval length of the input end of the switching module from being connected to the first output end to being connected to the second output end, avoiding the ping-pong effect caused by too short interval length of switching. BRIEF DESCRIPTION OF DRAWINGS

[0042] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings needed in the description of the embodiments of the application will be briefly introduced. In the drawings:

[0043] Figure 1 is an exemplary operating environment schematic diagram of the embodiments of the application;

[0044] Figure 2 is a block diagram of the power remote channel disconnection online monitoring device of the embodiments of the application;

[0045] Figure 3 is a structure diagram of the fault detection module in the device embodiments of the application;

[0046] Figure 4 is a structure diagram of the switching module in the device embodiments of the application;

[0047] Figure 5 is a cross-sectional view of the movable end in the switching module of the device embodiments of the application;

[0048] Figure 6 is a flow chart of the power remote channel disconnection online monitoring method of the embodiments of the application;

[0049] Figure 7 is a structure diagram of an electronic device provided by the embodiments of the application.

[0050] The reference numerals are explained as follows: 100, remote device; 200, main remote channel; 300, backup remote channel; 400, dispatching device; 500, monitoring device; 510, fault detection module; 511, voltage acquisition sub-module; 512, comparison sub-module; 520, switching module; 521, input end; 522, first output end; 5221, second contact; 523, second output end; 5231, fourth contact; 524, U-shaped support; 525, electromagnet; 526, magnetic induction piece; 5261, lower end surface; 5262, first contact; 5263, upper end surface; 5264, third contact; 527, insulating plate; 528, spring; 530, communication module; 540, indication module; 541, first indication lamp; 542, second indication lamp; 550, power module; 560, control module. DETAILED DESCRIPTION

[0051] The exemplary embodiments of the present application will be described more fully hereinafter with reference to the accompanying drawings. While the exemplary embodiments of the present application are shown in the drawings, it is understood that the present application can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the application to those skilled in the art.

[0052] It should be noted that the terms "first", "second", and the like, used in the description and the claims of the present application and the above-described drawings are used to distinguish similar objects and are not necessarily used to describe a particular sequential or chronological order. It should be understood that such terms are used interchangeably, where appropriate, to refer to the embodiments of the present application described herein, unless otherwise indicated by the context. In addition, the term "comprising" and its variants are to be construed as open-ended terms meaning "including, but not limited to," in order to cover the embodiments of the present application described herein.

[0053] Figure 1 An exemplary operating environment of the embodiments of the present application is shown in the accompanying drawings, which includes a remote device 100, a main remote channel 200, a backup remote channel 300, and a dispatching device 400. The remote device 100 can interact with the dispatching device 400 through the main remote channel 200 or the backup remote channel 300.

[0054] The remote control device 100 is arranged in the unattended substation, the dispatching device 400 is arranged at the dispatching end, such as arranged in the automatic room, the dispatching device 400 is operated by the dispatching on-duty personnel, the dispatching device 400 can be a server, and also can be a combination of the server and the display, so as to facilitate the dispatching on-duty personnel to remotely monitor and operate the substation, and the embodiment does not limit the dispatching device 400. The remote control device 100 is used for uploading the telemetry and the remote signal of the substation to the dispatching device 400 through the main remote control channel 200 or the backup remote control channel 300, or receiving the remote control instruction issued from the dispatching device 400 through the main remote control channel 200 or the backup remote control channel 300, so as to realize the purpose that the dispatching on-duty personnel remotely operates the substation.

[0055] The main remote control channel 200 is composed of two transmission sections, the first transmission section is composed of two twisted wires, that is, the first transmission section is a twisted pair, and the second transmission section is composed of an optical fiber, Figure 1 The first transmission section and the second transmission section are respectively indicated by solid lines and dashed lines. One end of the first transmission section is connected with the remote control device 100, and the other end is connected with an optical transceiver arranged in the substation; one end of the second transmission section is connected with the optical transceiver arranged in the substation, and the other end is connected with an optical transceiver arranged in the room, and the optical transceiver arranged in the room is connected with the dispatching device 400 through a wire. The two optical transceivers adopt SDH technology, Figure 1 The optical transceiver in the substation is indicated by SDH1, and the optical transceiver in the room is indicated by SDH2.

[0056] With the increase of the distance between the remote control device 100 and the dispatching device 400, the distance of the second transmission section also becomes longer, and the distance of the optical fiber becomes longer. Since the long-distance optical fiber is easily affected by signal interference, transmission loss and other factors, the probability of line breakage is increased. Therefore, in order to maintain the normal communication between the remote control device 100 and the dispatching device 400 when the optical fiber is broken (the main remote control channel 200 is broken), the backup remote control channel 300 is arranged between the remote control device 100 and the dispatching device 400. The backup remote control channel 300 is a transmission channel established between the remote control device 100 and the dispatching device 400 through a wide area network, and the backup remote control channel 300 is, for example, 4G / 5G.

[0057] In order to timely find that the main remote control channel 200 is broken, and automatically switch the signal transmitted between the remote control device 100 and the dispatching device 400 to the backup remote control channel 300 when the main remote control channel 200 is broken, the application provides an online monitoring device for a power remote control channel, and the monitoring device 500 is arranged on the common end of the main remote control channel 200 and the backup remote control channel 300.

[0058] As Figure 2As shown, the line break online monitoring device 500 of the power remote channel includes a fault detection module 510, a switching module 520, a communication module 530, an indication module 540, a power module 550, and a control module 560. The control module 560 is the core module of the monitoring device 500, and is configured to control the other modules to cooperate with each other, so that the monitoring device 500 can quickly find that the main remote channel 200 has a line break fault, and can activate the standby remote channel 300 in time when the main remote channel 200 has a line break fault.

[0059] Hereinafter, the monitoring device 500 is collectively referred to as a device, and each module in the device is described in detail.

[0060] The fault detection module 510 is arranged on the main remote channel 200. Referring to Figure 3 , the fault detection module 510 includes a voltage acquisition sub-module 511 and a comparison sub-module 512. The voltage acquisition sub-module 511 mainly includes an RSM485 chip, which has eight terminals, the first to eighth terminals are represented as VCC, GND, TXD, RXD, CON, RGND, A, and B, respectively. Specifically, the VCC terminal is the power supply terminal of the RSM485 chip, which is connected to the power module 550 and accesses a voltage of 3.3V, and a fuse is arranged on the power supply terminal to prevent the voltage provided by the power module 550 to the RSM485 chip from exceeding the voltage threshold and causing the RSM485 chip to burn out. The fuse is represented by SMD110. The GND terminal cooperates with the VCC terminal to ensure that the accessed voltage meets the voltage requirement of the RSM485 chip. The TXD terminal is connected to the comparison sub-module 512, and is configured to send a signal on the RSM485 chip to the comparison sub-module 512. The RXD terminal is connected to the control module 560, and is configured to receive a signal output from the control module 560. The CON terminal is also connected to the control module 560, and the control module 560 controls the working state of the RSM485 chip through the CON terminal, such as controlling it to enter a sending state or a receiving state. The RGND terminal is grounded. The A terminal is connected to one wire of the main remote channel 200, and is configured to acquire the voltage on the wire. The B terminal is connected to another wire of the main remote channel 200, and is configured to acquire the voltage on the wire.

[0061] Specifically, when the control module 560 controls the RSM485 chip to enter the sending state through the CON terminal, the RSM485 chip sends the voltages collected by the A terminal and the B terminal to the comparison submodule 512, the comparison submodule 512 compares the voltages on the two wires, if the voltages on the two wires are equal, the comparison submodule 512 outputs a digital level 1, indicating that the main remote channel 200 is disconnected; otherwise, the comparison submodule 512 outputs a digital level 0, indicating that the main remote channel 200 is connected. It should be noted that the main remote channel 200 is disconnected when the voltages on the two wires are equal, because the equal voltages on the two wires mean that the current cannot normally flow through the optical transceiver in the substation, and a potential difference between the two wires is needed to form a closed loop, thereby ensuring the normal communication between the remote device 100 and the dispatching device 400.

[0062] As can be seen, the comparison submodule 512 has the function of comparing the magnitudes of two voltages, so the comparison submodule 512 can be a voltage comparator, and in the present embodiment, an LM393 comparator is used as the voltage comparator, which can be selected according to actual needs in practical applications, and the present embodiment is not limited thereto.

[0063] The switching module 520 is arranged on the common end of the main remote channel 200 and the standby remote channel 300. As shown in Figure 4 the switching module 520 includes an input end 521, a first output end 522, a second output end 523, a U-shaped bracket 524, an electromagnet 525, a magnetic induction piece 526, and an insulating plate 527. The input end 521 is connected with the remote device 100 through the first transmission segment of the main remote channel 200, the first output end 522 is connected with the main remote channel 200, specifically connected with the first transmission segment of the main remote channel 200, that is, the first transmission segment of the main remote channel 200 is cut off into two sub-transmission segments, the input end 521 is connected with the sub-transmission segment close to the remote device 100, and the first output end 522 is connected with the sub-transmission segment close to the optical transceiver in the substation. The second output end 523 is connected with the standby remote channel 300.

[0064] The U-shaped bracket 524 is open at one end and hollow inside. The electromagnet 525 is located in the internal cavity of the U-shaped bracket 524 and is fixedly connected to at least one inner wall of the U-shaped bracket 524, such as the bottom inner wall and / or one side inner wall of the U-shaped bracket 524. The specific connection method is not limited in this embodiment, as long as it can ensure that the U-shaped bracket 524 can play the role of fixing the electromagnet 525. The U-shaped bracket 524 is an insulating bracket. The power supply end of the electromagnet 525 is connected to the power module 550. An electric switch is provided on the circuit connecting the electromagnet 525 and the power module 550. The on and off of the electric switch is controlled by the control module 560. The electric switch is not shown in the figure. The magnetic induction element 526 is located near the open end of the U-shaped bracket 524. The magnetic induction element 526 is elongated. In this embodiment, the magnetic induction element 526 is an armature. One end of the magnetic induction element 526 is hinged to the side wall of the open end of the U-shaped bracket 524. The hinged end of the magnetic induction element 526 serves as the input end 521 of the switching module 520. The insulating plate 527 is made of insulating material and is disposed on the side wall of the open end of the U-shaped bracket 524, opposite to the side wall where the input end 521 is located. The first output end 522 and the second output end 523 are both disposed on the plate surface of the insulating plate 527 facing the input end 521, with the first output end 522 located directly below the second output end 523. The other end of the magnetic induction element 526 extends toward the insulating plate 527 and is located between the first output end 522 and the second output end 523. The end of the magnetic induction element 526 located between the first output end 522 and the second output end 523 serves as a movable end.

[0065] To limit the movable end to only vertical reciprocating motion between the first output end 522 and the second output end 523, a spring 528 is provided at the end of the magnetic induction element 526 that is hinged to the U-shaped bracket 524, and the other end of the spring 528 is fixedly connected to the bottom of the U-shaped bracket 524. Specifically, when the control module 560 controls the switch to be turned off, the power module 550 and the electromagnet 525 are not connected, and the electromagnet 525 is not energized. At this time, the magnetic induction element 526 falls under the action of gravity until the movable end abuts against the first output end 522, at which point the input end 521 is connected to the first output end 522. When the control module 560 controls the switch to be turned on, the power module 550 supplies power to the electromagnet 525. After the electromagnet 525 is energized, it generates a magnetic field. Under the action of the magnetic field, the magnetic induction element 526 gradually moves away from the electromagnet 525, that is, moves vertically upward, until the movable end abuts against the second output end 523, at which point the input end 521 is connected to the second output end 523.

[0066] like Figure 5As shown, the movable end includes a lower end face 5261 and an upper end face 5263. The lower end face 5261 faces the first output end 522, and the upper end face 5263 faces the second output end 523. Three first contacts 5262 are provided on the lower end face 5261, and a second contact 5221 corresponding to each of the first contacts 5262 is provided on the first output end 522. When the movable end is connected to the first output end 522, the three first contacts 5262 on the lower end face 5261 contact their respective second contacts 5221. Simultaneously, three third contacts 5264 are provided on the upper end face 5263, and a fourth contact 5231 corresponding to each of the third contacts 5264 is provided on the second output end 523. When the movable end is connected to the second output end 523, the three third contacts 5264 on the upper end face 5263 contact their respective fourth contacts 5231. In this embodiment, each set of contacts (first contact 5262 and second contact 5221 or third contact 5264 and fourth contact 5231 corresponding to the third contact 5264) is used to transmit signals on a line, such as signals on a transmitting line, receiving line or grounding line. When the active terminal is connected to one of the output terminals, all three sets of contacts are in contact at the same time, so that the signals on the transmitting line, receiving line and grounding line are transmitted together at the same time, ensuring normal communication of the main remote control channel 200 or the backup remote control channel 300 when it is turned on.

[0067] In the prior art, to ensure the simultaneous transmission of signals from three lines, a relay is usually installed on each line, with three independent relays controlling the signal transmission of their respective lines. However, this embodiment uses a design where three sets of contacts make contact with each other as the movable end moves in one direction. Compared to the prior art, this reduces the number of relays and saves the size of the device. At the same time, when the magnetic induction element 526 makes a vertical reciprocating motion, the terminals on the movable end will make contact with the terminals on the first output terminal 522 and the second output terminal 523 respectively, reducing the switching stroke and ensuring that when the main remote control channel 200 is disconnected, the backup remote control channel 300 is promptly turned on. The backup remote control channel 300 serves as the transmission channel for information exchange between the remote control device 100 and the scheduling device 400.

[0068] like Figure 2 As shown, the communication module 530 includes an RS485 module and an Ethernet module. Two RS485 modules are provided. One RS485 module communicates with the Ethernet module to transmit the operating status information of the main remote control channel 200 and the backup remote control channel 300 to the dispatching device 400 via the Ethernet module. The other RS485 module connects to a PC to dynamically modify the Ethernet IP address via the PC.

[0069] The indicator module 540 includes a first indicator light 541 and a second indicator light 542. Both the first indicator light 541 and the second indicator light 542 are connected to the control module 560. When the main remote control channel 200 is in the conducting state, that is, when the input terminal 521 of the switching module 520 is connected to the first output terminal 522, the control module 560 controls the first indicator light 541 to light up; otherwise, it controls the first indicator light 541 to turn off. When the backup remote control channel 300 is in the conducting state, that is, when the input terminal 521 of the switching module 520 is connected to the second output terminal 523, the control module 560 controls the second indicator light 542 to light up; otherwise, it controls the second indicator light 542 to turn off. By lighting the first indicator light 541 and the second indicator light 542, the operator can intuitively know the operating status of the main remote control channel 200 and the backup remote control channel 300. The operator can be a dispatcher or a field maintenance personnel.

[0070] In this embodiment, to facilitate the determination of the operating status of the backup remote control channel 300, a fault detection module 510 can be set on the second output terminal 523 of the switching module 520. The operating status of the backup remote control channel 300 is detected by the fault detection module 510 set on the second output terminal 523. The fault detection module 510 used here has the same components and detection principle as the fault detection module 510 set on the main remote control channel 200, so it will not be described again here. Of course, other detection modules can also be set on the backup remote control channel 300, such as a transceiver, and the transceiver can detect the strength of the radio frequency signal transmitted by the backup remote control channel 300 to determine the operating status of the backup remote control channel 300.

[0071] In this embodiment, the control module 560 uses an MCU, specifically an STM32 chip. In practical applications, other chips can also be used to enable the control of other modules to cooperate with each other, quickly detect a disconnection fault in the main remote control channel 200, and automatically switch the signal transmitted between the remote control device 100 and the scheduling device 400 to the backup remote control channel 300 when a disconnection fault occurs in the main remote control channel 200. This embodiment does not impose any restrictions.

[0072] The control module 560 includes a forced-cut button, an automatic switching button, and a manual switching button. The forced-cut button forces the switching module 520 to operate in a closed loop. When the operator presses the forced-cut button, the switching module 520 is forcibly switched to the current remote power channel, such as from the main remote channel 200 to the backup remote channel 300, or vice versa. The automatic and manual switching buttons allow the operator to select the appropriate mode. If the operator presses the automatic switching button, the system enters automatic mode, where the fault detection module 510 automatically monitors the operating status of the main remote channel 200, and the control module 560 controls the switching module 520 accordingly. If the operator presses the manual switching button, the system enters manual mode, where the fault detection module 510 monitors the operating status of the main remote channel 200, but the operator manually controls the switching module 520 to perform the switching.

[0073] To further illustrate the operation of the device in this embodiment, this application also provides a method for online monitoring of power remote control channel disconnection, which is executed by the aforementioned device, such as... Figure 6 As shown, the method may include the following steps S1 to S16.

[0074] Step S1: Determine the operator's click operation. If the operator clicks the automatic switch button, the device enters automatic mode and proceeds to step S2; if the operator clicks the manual switch button, the device enters manual mode and proceeds to step S12.

[0075] Step S2: Monitor the operating status of the main remote control channel 200. The fault detection module 510 collects the voltage of the main remote control channel 200 and determines the operating status of the main remote control channel 200 based on the collected voltage. It then determines whether the main remote control channel 200 is disconnected based on the operating status of the main remote control channel 200. Specifically: when the main remote control channel 200 is in a disconnected state, it indicates that the main remote control channel 200 is disconnected, and the process proceeds to step S3; when the main remote control channel 200 is in a conducting state, it indicates that the main remote control channel 200 is conducting, and the process proceeds to step S7.

[0076] Step S3: Determine whether the input terminal 521 of the switching module 520 has switched from being connected to the first output terminal 522 to being connected to the second output terminal 523. If not, proceed to step S4; if yes, proceed to step S9.

[0077] Step S4: Send a switching request to the scheduling device 400. The control module 560 generates a switching request and sends it to the scheduling device 400 via the RS485 module and the Ethernet module. In this embodiment, the switching request refers to a request for the scheduling device 400 to issue a switching command. The switching command is used to drive the control module 560 to switch the connection of the input terminal 521 of the switching module 520 from the first output terminal 522 to the second output terminal 523.

[0078] Step S5: Receive switching command. After receiving the switching request, the dispatching device 400 has the dispatching personnel confirm in the background whether to control the switching module 520 to perform the switching. If the switching is confirmed, the dispatching device 400 generates a switching command and returns the switching command to the control module 560 via the original path.

[0079] Step S6: The input terminal 521 of the control switching module 520 is switched from being connected to the first output terminal 522 to being connected to the second output terminal 523, and after the control is completed, the process proceeds to step S9.

[0080] Step S7: Retrieve the operating status of the main remote control channel 200 during the last monitoring. If the main remote control channel 200 was disconnected during the last monitoring, proceed to step S8; otherwise, proceed to step S9.

[0081] Step S8: Execute the anti-jitter algorithm. The anti-jitter algorithm is used to calculate the interval specified in time, which refers to the time interval between the switching module 520's input terminal 521 switching from connection with the first output terminal 522 to connection with the second output terminal 523, to avoid the ping-pong effect caused by the switching interval being too short.

[0082] Step S9: Monitor the operating status of the backup remote control channel 300. The fault detection module 510 installed on the second output terminal 523 collects the voltage value on the second output terminal 523 and determines the operating status of the backup remote control channel 300 based on the voltage value. Alternatively, other detection modules installed on the backup remote control channel 300 can be used to determine the operating status of the backup remote control channel 300, thereby determining whether the backup remote control channel 300 is activated in the event of a disconnection of the main remote control channel 200.

[0083] Step S10: Monitor the switching status of the switching module 520. The control module 560 controls the electrical switch located between the power module 550 and the electromagnet 525 to determine the switching status of the switching module 520. Therefore, the switching status of the switching module 520 is deduced based on the on / off state of the electrical switch, thereby determining whether the input terminal 521 of the switching module 520 has switched from being connected to the first output terminal 522 to being connected to the second output terminal 523, and further verifying whether the backup remote control channel 300 is enabled.

[0084] Step S11: Record and send the operating status of the backup remote control channel 300 and the switching status of the switching module 520, so that the dispatching personnel can be informed of the device's operating status. After sending, return to step S2 to start the next round of monitoring.

[0085] Step S12: Wait for key input. In manual mode, the device can support the operator clicking the forced cut button, that is, support the forced control of the switching module 520 to switch the current power remote control channel. It can also support the operator manually controlling the switching module 520 to switch when the main remote control channel 200 is in a disconnected state. That is, the device only receives the operator clicking the forced cut button when the main remote control channel 200 is in a disconnected state.

[0086] Step S13: The operator clicked a button, which was the forced cut button.

[0087] Step S14: Monitor the switching status of the switching module 520. There are two possible switching statuses for the switching module 520: one is that the input terminal 521 of the switching module 520 is connected to the first output terminal 522, and the other is that the input terminal 521 of the switching module 520 is connected to the second output terminal 523. If the first situation occurs, proceed to step S15; if the second situation occurs, proceed to step S16.

[0088] Step S15: The input terminal 521 of the control switching module 520 is switched from being connected to the first output terminal 522 to being connected to the second output terminal 523, and the control returns to step S12 after the control ends.

[0089] Step S16: The input terminal 521 of the control switching module 520 is switched from being connected to the second output terminal 523 to being connected to the first output terminal 522, and returns to step S12 after the control ends.

[0090] Therefore, the device in this embodiment supports multiple operating modes, and the operator can select an appropriate mode as needed. In automatic mode, the operator does not need to monitor the operating status of the main remote control channel 200 in real time, nor does the operator need to manually control the switching task of the switching module 520. Instead, the device automatically controls the entire process, reducing human intervention and improving the timeliness and accuracy of power remote control channel monitoring. In manual mode, the operator can switch the switching module 520 as needed. For example, if one remote control channel needs maintenance, another remote control channel can be activated. This allows for maintenance and risk elimination without affecting the normal communication between the remote control device 100 and the dispatching device 400, making the device in this embodiment suitable for various application scenarios.

[0091] In one possible implementation, before executing the anti-jitter algorithm in step S8 above, it is necessary to construct the algorithm so that the specified interval time can be obtained based on the constructed algorithm. The specific construction process is as follows.

[0092] First, choose the model architecture for the algorithm.

[0093] A deep Q-network (DQN) is used as the basic architecture. Deep learning and Q-learning are combined to process the high-dimensional state space. Convolutional neural networks (CNN) or multilayer perceptrons (MLP) are used to extract and process the running state information of the main remote channel 200, and output the Q value of the corresponding action. The Q value represents the expected cumulative reward after performing a switching action in one of the running states, which is used to guide the model to select the optimal action.

[0094] Secondly, define the state space. In a scenario considering only the remote channel role and historical switching behavior, the state space s s simplifies to:

[0095] 1. Remote control channel role information. This includes the primary remote control channel identifier: This indicates that the current primary remote control channel is either primary remote control channel 200 or backup remote control channel 300, represented by 1 and 2 respectively; it also includes the stability of the remote control channel role: ;

[0096] 2. Historical handover behavior information. This includes the time of the most recent handover. (seconds), switching frequency (times / second), Ping Pong switching marker P indicates whether the most recent handover is a ping-pong handover. Before the remote control device 100 and the scheduling device 400 can interact, they need to establish a transmission channel through the main remote control channel 200 or the backup remote control channel 300. If the main remote control channel 200 and the backup remote control channel 300 are switched frequently, the establishment may fail, affecting the final information interaction. Therefore, in this embodiment, it is set that if there are more than 2 handovers within one minute, the last handover is considered to be a ping-pong handover. That is, when f>2 / 60 (times / second), p=1, and this handover is a ping-pong handover. Otherwise, when f≤2 / 60 (times / second), p=0, and this handover is not a ping-pong handover.

[0097] 3. The state vector is represented as: .

[0098] Next, define the action space. Specifically, the action space... The interval adjustment operation is defined as a discrete action set A. ,in, Adjusting the step size for a preset interval means reducing the current interval by a certain amount. ,reduce , remain unchanged, increase ,Increase .

[0099] Through the above discrete adjustment actions, the model can flexibly adjust the interval time.

[0100] Finally, the reward function is designed. The reward function R is used to evaluate the merits of each action, guiding the model to learn to suppress the ping-pong effect, including:

[0101] 1. Ping-Pong Switching Penalty:

[0102] ,in, The time interval between the two switching operations is k1, and the penalty coefficient is k1.

[0103] 2. Remote control channel stability bonus:

[0104] Where k2 is the reward coefficient, s t The percentage of time that the current telemetry channel is continuously used as the primary telemetry channel;

[0105] 3. Frequency switching penalty:

[0106] Where k3 is the penalty coefficient, f max This is the preset maximum acceptable frequency;

[0107] Based on the ping-pong handover penalty, the remote control channel stability reward, and the handover frequency penalty, the comprehensive reward function is calculated as follows: .

[0108] In this embodiment, the constructed algorithm model needs to be trained before it can be used. The training process is as follows:

[0109] First, training data is collected. The switching status s of the switching module 520 is collected every t seconds. Based on the current policy π, a switching action a is selected, executed, and the reward R and the next state are observed. To obtain training data .

[0110] Then, the Q-value is updated. This embodiment uses a target network optimization algorithm, such as the Double DQN algorithm, to update the Q-value: ,in, The Q-value function of the target network, For learning rate, This is the discount factor.

[0111] Finally, optimize strategy π. Using... Optimize the greedy strategy:

[0112] ,in, The value decreases linearly from 1 to 0.1, with a decay period of 10,000 steps.

[0113] Therefore, the model training process described above strengthens the algorithm model's focus on historical handover behavior itself. By using the stability of the remote control channel role and the handover frequency as core optimization objectives, it can effectively suppress the ping-pong effect without relying on physical layer signal quality and business requirements. In practical applications, the penalty coefficient can also be customized as needed. and interval time step ,in, The value of k1 will determine the final output value of the comprehensive reward function. In practical applications, if the primary task is to suppress the ping-pong effect during the handover operation of the handover module 520, then the value of k1 needs to be greater than the values ​​of k2 and k3, and k1 needs to maintain a relative ratio with k2 and k3. For example, k1 should be 2-5 times k2 and k3. In a specific example, when k1 is 6, then k2 and k3 should be 2 and 3 respectively. Similarly, if the primary task is to maintain the stability of the currently used telemetry channel and avoid communication interruptions caused by frequent handovers, then k2 should be set to 2-3 times k1 and k3. Setting it to only 2-3 times is important because suppressing the ping-pong effect during handover operations is also important, so the difference between k2 and k1 should not be too large. Likewise, if the primary task is to reduce the handover frequency of the telemetry channel, then k3 should be set to 2-3 times k1 and k2. In this embodiment, the maximum value of k1, k2, and k3 is 20.

[0114] The time required for the switching module 520 to perform the switching operation is calculated as follows: when the main remote control channel 200 is disconnected and the backup remote control channel 300 needs to be started, in order to ensure the timely start of the backup remote control channel 300, A typical value for the switching time required by a regular relay can be taken as 200ms, that is... The minimum time can be 400ms. Furthermore, in the operation and maintenance of power remote control channels, the fiber optic repair time is generally 2 hours. If the switching time exceeds 2 hours, the purpose of emergency switching cannot be achieved. The maximum value is 2h, that is The maximum value is 4h. Except for the above extreme cases, this embodiment sets... The value ranges from 10s to 60s.

[0115] By selecting appropriate parameter values, the accuracy of the trained algorithm model can be guaranteed. The trained algorithm model is then stored in the control module 560, which can call it as needed.

[0116] It should be noted that the sequence numbers of the steps in the above embodiments do not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application. In practical applications, all the above possible implementation methods can be arbitrarily combined in a combined manner to form possible embodiments of this application, which will not be described in detail here.

[0117] Based on the same inventive concept, this application also provides an electronic device, including a processor and a memory, wherein the memory stores a computer program, and the processor is configured to run the computer program to execute an online monitoring method for disconnection of a power remote control channel according to any of the above embodiments.

[0118] In an exemplary embodiment, an electronic device is provided, such as Figure 7 As shown, Figure 7 The illustrated electronic device 700 includes a processor 701 and a memory 703. The processor 701 and the memory 703 are connected, for example, via a bus 702. Optionally, the electronic device 700 may also include a transceiver 704. It should be noted that in practical applications, the transceiver 704 is not limited to one type, and the structure of this electronic device 700 does not constitute a limitation on the embodiments of this application.

[0119] Processor 701 may be a CPU (Central Processing Unit), a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. Processor 701 may also be a combination that implements computational functions, such as including one or more microprocessor combinations, a combination of a DSP and a microprocessor, etc.

[0120] Bus 702 may include a pathway for transmitting information between the aforementioned components. Bus 702 may be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc. Bus 702 can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 7The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0121] The memory 703 may be a ROM (Read Only Memory) or other type of static storage device capable of storing static information and instructions, RAM (Random Access Memory) or other type of dynamic storage device capable of storing information and instructions, or an EEPROM (Electrically Erasable Programmable Read Only Memory), CD-ROM (Compact Disc Read Only Memory) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital universal optical discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but not limited thereto.

[0122] The memory 703 stores computer program code that executes the scheme of this application, and its execution is controlled by the processor 701. The processor 701 executes the computer program code stored in the memory 703 to implement the content shown in the foregoing method embodiments.

[0123] Among them, electronic devices include, but are not limited to: mobile terminals such as mobile phones, laptops, digital radio receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), and in-vehicle terminals (such as in-vehicle navigation terminals), as well as fixed terminals such as digital TVs and desktop computers. Figure 7 The electronic device shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments of this application.

[0124] Based on the same inventive concept, this application also provides a storage medium storing a computer program, wherein the computer program is configured to execute, at runtime, a method for online monitoring of power remote control channel disconnection of any of the above embodiments.

[0125] Those skilled in the art will clearly understand that the specific working process of the systems, devices, and modules described above can be referred to the corresponding process in the foregoing method embodiments. For the sake of brevity, it will not be repeated here.

[0126] Those skilled in the art will understand that the technical solution of this application, or all or part of it, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several program instructions to cause an electronic device (e.g., a personal computer, server, or network device) to execute all or part of the steps of the methods described in the embodiments of this application when running the program instructions. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, portable hard drive, read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0127] Alternatively, all or part of the steps of the foregoing method embodiments can be implemented by hardware (such as electronic devices like personal computers, servers, or network devices) associated with program instructions. The program instructions can be stored in a computer-readable storage medium. When the program instructions are executed by the processor of the electronic device, the electronic device executes all or part of the steps of the methods described in the embodiments of this application.

[0128] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that within the spirit and principles of this application, modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; and these modifications or substitutions do not cause the corresponding technical solutions to leave the protection scope of this application.

Claims

1. A method for online monitoring of line breakage in a power remote control channel, applied in an online monitoring device for line breakage in a power remote control channel, the device comprising: The switching module (520) includes an input terminal (521), a first output terminal (522), and a second output terminal (523); wherein the input terminal (521) is connected to the remote control device (100), the first output terminal (522) is connected to the main remote control channel (200), and the second output terminal (523) is connected to the backup remote control channel (300). The ends of the main remote control channel (200) and the backup remote control channel (300) that are away from the switching module (520) are both connected to the scheduling device (400). The fault detection module (510) includes a voltage acquisition submodule (511) and a comparison submodule (512). The acquisition end of the voltage acquisition submodule (511) is set on the main remote control channel (200) for acquiring the voltage of the main remote control channel (200). The comparison submodule (512) obtains the operating state of the main remote control channel (200) based on the voltage. The operating state is either a disconnected state or a connected state. The control module (560) is connected to the fault detection module (510) and the switching module (520) respectively, and is used to control the input terminal (521) to switch from being connected to the first output terminal (522) to being connected to the second output terminal (523) when the main remote control channel (200) is in a disconnected state; The method is characterized by comprising: The operating status of the main remote control channel (200) is obtained by collecting the voltage of the main remote control channel (200); When it is determined that the main remote control channel (200) is in the conducting state, the method further includes: Retrieve the operating status of the main remote control channel (200) at the time of the last monitoring; If the main remote control channel (200) was disconnected during the last monitoring, an anti-jitter algorithm is executed. This algorithm calculates a specified interval, where the specified interval refers to the time interval between the input (521) of the switching module (520) switching from connection to the first output (522) to connection to the second output (523). The anti-jitter algorithm suppresses the ping-pong effect by designing a reward function, including: 1) Ping-Pong Switching Penalty: ,in, The time interval between the two switching operations is k1, and the penalty coefficient is k1. 2) Remote channel stability bonus: Where k2 is the reward coefficient, s t The percentage of time that the current telemetry channel is continuously used as the primary telemetry channel; 3) Frequency switching penalty: Where k3 is the penalty coefficient, f max This is the preset maximum acceptable frequency; Based on the ping-pong handover penalty, the remote control channel stability reward, and the handover frequency penalty, the comprehensive reward function is calculated as follows: .

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