Broken line on-line monitoring device and monitoring method of power telecontrol channel

Abstract

The invention provides a broken line on-line monitoring device and method for a power telecontrol channel, and belongs to the technical field of power, and the device comprises a switching module which comprises an input end, a first output end and a second output end; wherein the input end is connected with the telecontrol device, the first output end is connected with the main telecontrol channel, the second output end is connected with the standby telecontrol channel, and the ends, away from the switching module, of the main telecontrol channel and the standby telecontrol channel are both connected with the dispatching device; the fault detection module is used for collecting the voltage of the main telecontrol channel and obtaining the operation state of the main telecontrol channel according to the voltage; and the control module is respectively connected with the fault detection module and the switching module and is used for controlling the input end to be switched from the connection with the first output end to the connection with the second output end when the main telecontrol channel is in the disconnection state. The operation state of the main telecontrol channel can be automatically monitored, the standby telecontrol channel can be started in time when the main telecontrol channel is disconnected, and normal communication between the telecontrol device and the dispatching device is guaranteed.

Description

Technical Field

[0001] The present application relates to the field of electric power technology, and in particular to an online monitoring device and method for monitoring a disconnection of an electric telecontrol channel. Background Art

[0002] With the rapid development of smart grids, unmanned substations have become a crucial component of modern power systems. In this model, dispatchers rely on telecontrol devices to remotely monitor and operate the substation. As the core equipment connecting the substation and the dispatching end, the telecontrol device plays a crucial role: it transmits telemetry and telesignaling signals from the substation to the dispatching end, while also transmitting remote control commands from the dispatching end to the substation for execution.

[0003] The transmission channel through which telecontrol devices upload signals and receive commands is also known as the power telecontrol channel. Existing power telecontrol channels primarily utilize fiber optic communication. However, as transmission distances increase, the risk of fiber optic communication failures increases significantly. Long-distance fiber optic cables are susceptible to factors such as signal interference and transmission loss, leading to degraded communication quality and even disconnection, seriously threatening the reliability of real-time communication between the telecontrol device and the dispatcher.

[0004] To address the above issues, existing Chinese patent CN114709925A proposes a statistical method for the number of telecontrol channel switching times. Although this method can determine the channel status by parsing message data, it still has obvious limitations: first, the message disassembly process is time-consuming and difficult to meet 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, developing a technical solution that can automatically detect power telecontrol channel disconnection and restore communication in time when a fault occurs has important practical value for ensuring the stable operation of the power system. Summary of the Invention

[0006] To solve the above technical problems, the present application provides an online monitoring device and method for disconnection of a power telecontrol channel, which is used to automatically detect disconnection faults in the power telecontrol channel and promptly restore communication between the telecontrol device and the dispatching end when a fault occurs. The technical solution is as follows: In a first aspect, a device for online monitoring of disconnection of a power telecontrol channel is provided, comprising: A switching module comprising an input end, a first output end, and a second output end; wherein the input end is connected to a remote control device, the first output end is connected to a main remote control channel, and the second output end is connected to a backup remote control channel; and the ends of the main remote control channel and the backup remote control channel away from the switching module are both connected to a dispatching device; a fault detection module, comprising a voltage acquisition submodule and a comparison submodule, wherein an acquisition terminal of the voltage acquisition submodule is provided on the main remote control channel and is used to acquire the voltage of the main remote control channel; and the comparison submodule obtains an operating state of the main remote control channel based on the voltage, wherein the operating state is either a disconnected state or a conductive state; The control module is connected to the switching module and the fault detection module respectively, and is used to control the input end to switch from being connected to the first output end to being connected to the second output end when the main remote control channel is in a disconnected state.

[0007] In a possible implementation, the switching module further includes a U-shaped bracket, an electromagnet, a magnetic induction component, and an insulating plate; The electromagnet is located in the inner cavity of the U-shaped bracket and is fixedly connected to at least one inner wall of the U-shaped bracket; The magnetic induction component is arranged near the open end of the U-shaped bracket, one end of the magnetic induction component is hinged to the side wall of the open end of the U-shaped bracket, and the end of the magnetic induction component hinged to the U-shaped bracket serves as the input end of the switching module; The insulating plate is arranged on the side wall of the open end of the U-shaped bracket 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. The other end of the magnetic induction component extends toward the insulating plate and is located between the first output end and the second output end. One end of the magnetic induction component located between the first output end and the second output end serves as a movable end. The movable end is affected by the magnetic force of the magnetic field generated by the electromagnet and switches between being connected to the first output end and being connected to the second output end.

[0008] In a possible implementation, a specified time interval is maintained when the active end switches between being connected to the first output end and being connected to the second output end.

[0009] In a possible implementation, the movable end includes a lower end surface and an upper end surface, the lower end surface is arranged toward the first output end, and the upper end surface is arranged toward the second output end; The lower end surface is provided with three first contacts, and the first output end is provided with a second contact corresponding to each of the first contacts. When the movable end is connected to the first output end, the three first contacts provided on the lower end surface are respectively in contact with the second contacts corresponding to each of the first contacts. Three third contacts are provided on the upper end surface, and a fourth contact corresponding to each of the third contacts is provided on the second output end. When the movable end is connected to the second output end, the three third contacts provided on the upper end surface are respectively in contact with the corresponding fourth contacts.

[0010] In a possible implementation, the main telecontrol channel is formed by two wires twisted together in a spiral; The voltage acquisition submodule is an RSM485 chip, and the RSM485 chip includes an A terminal and a B terminal, and the A terminal and the B terminal both serve as acquisition terminals of the RSM485 chip; The A terminal is connected to one of the wires in the main remote control channel for collecting the voltage on the wire; The B terminal is connected to another wire in the main remote control channel and is used to collect the voltage on the other wire.

[0011] In a possible implementation, the RSM485 chip further includes a TXD terminal, and the TXD terminal is used to send the voltages of the two wires to the comparison submodule respectively; The comparison submodule compares the voltages on the two wires, and when the voltages on the two wires are equal, determines that the main remote control channel is in a disconnected state.

[0012] In a possible implementation, a communication module is further included, and the control module remotely communicates with the scheduling device or the PC through the communication module.

[0013] In a possible implementation, an indication module is further included, the indication module including a first indicator light and a second indicator light, the first indicator light and the second indicator light both being connected to the control module; The control module is configured to: When the main remote control channel is in the on state, controlling the first indicator light to light up; When the standby remote control channel is in the on state, the second indicator light is controlled to light up.

[0014] In a second aspect, a method for online monitoring of a power telecontrol channel for disconnection is provided. The method is performed by the device for online monitoring of a power telecontrol channel for disconnection described in any one of the above items, comprising: Collecting the voltage of the main telecontrol channel to obtain the operating status of the main telecontrol channel; When it is determined that the main remote control channel is in a disconnected state, determining whether the input end is connected to the second output end; If so, detecting the operating state of the standby telecontrol channel, and when the operating state of the standby telecontrol channel is an on state, using the standby telecontrol channel as a transmission channel for information exchange between the telecontrol device and the dispatching device; If not, a switching request is sent to the scheduling device, and when the switching instruction returned by the scheduling device is received, the input end is controlled to be connected to the second output end, and the operating status of the standby remote control channel is detected. When the operating status of the standby remote control channel is the on state, the standby remote control channel is used as a transmission channel for information exchange between the remote control device and the scheduling device.

[0015] In a possible implementation, when it is determined that the primary remote control channel is in the on state, the method further includes: Retrieve the operating status of the main telecontrol channel during the last monitoring; If the main remote control channel is in a disconnected state during the last monitoring, an anti-jitter algorithm is executed. The anti-jitter algorithm is used to calculate the interval specified time. The interval specified time refers to the interval length when the input end of the switching module switches from being connected to the first output end to being connected to the second output end.

[0016] The technical solutions provided in the embodiments of the present application can achieve the following technical effects: (1) The present application is provided with a fault detection module, a switching module and a control module. Among them, the fault detection module is used to monitor the operating status of the main telecontrol channel in real time. When the main telecontrol channel is in a disconnected state, the control module controls the switching module to enable the backup telecontrol channel, which maintains normal communication between the telecontrol device and the dispatching device, thereby achieving the purpose of automatically detecting the disconnection fault of the power telecontrol channel and promptly restoring the communication between the telecontrol device and the dispatching end when the fault occurs.

[0017] (2) This application avoids the problem of setting up a separate relay on each line by setting up a design in which three sets of contacts contact each other when the movable end moves in a certain direction, reduces the number of relays to be set up, and reduces the size of the device. At the same time, when the magnetic induction component makes a vertical reciprocating motion, the terminals on the movable end will contact the terminals on the first output end and the second output end respectively, reducing the switching stroke and ensuring that the backup remote control channel is activated in time when the main remote control channel is disconnected. Furthermore, by deploying an anti-shake algorithm in the control module, an interval specified time is obtained when the anti-shake algorithm is executed. The interval specified time is used to control the interval length when the input end of the switching module switches from being connected to the first output end to being connected to the second output end, avoiding the ping-pong effect caused by the switching interval being too short. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments of the present application. In the drawings: Figure 1 is a schematic diagram of an exemplary operating environment of an embodiment of the present application; Figure 2 This is a block diagram of an online monitoring device for a power telecontrol channel disconnection according to an embodiment of the present application; Figure 3 is a structural diagram of a fault detection module in an embodiment of the device of the present application; Figure 4 is a structural diagram of a switching module in an embodiment of the device of the present application; Figure 5 is a cross-sectional view of the movable end of the switching module in the embodiment of the device of the present application; Figure 6 This is a flow chart of a method for online monitoring of a power telecontrol channel disconnection according to an embodiment of the present application; Figure 7 This is a structural diagram of an electronic device provided in an embodiment of the present application.

[0019] Explanation of the reference numerals: 100, remote control device; 200, main remote control channel; 300, backup remote control channel; 400, dispatching device; 500, monitoring device; 510, fault detection module; 511, voltage acquisition submodule; 512, comparison submodule; 520, switching module; 521, input end; 522, first output end; 5221, second contact; 523, second output end; 5231, fourth contact; 524, U-shaped bracket; 525, electromagnet; 526, magnetic induction element; 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 indicator light; 542, second indicator light; 550, power supply module; 560, control module. DETAILED DESCRIPTION

[0020] The following describes exemplary embodiments of the present application in more detail with reference to the accompanying drawings. Although exemplary embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present application and to fully convey the scope of the present application to those skilled in the art.

[0021] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that such usage is interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the term "including" and its variations are to be interpreted as open-ended terms meaning "including but not limited to."

[0022] Figure 1 This is a schematic diagram of an exemplary operating environment of an embodiment of the present application, which includes a remote control device 100, a main remote control channel 200, a backup remote control channel 300 and a scheduling device 400. The remote control device 100 can exchange information with the scheduling device 400 through the main remote control channel 200 or the backup remote control channel 300.

[0023] The telecontrol device 100 is installed in an unmanned substation, and the dispatching device 400 is installed at the dispatching end, such as in an automated machine room. The dispatching device 400 is operated by the dispatching personnel on duty. The dispatching device 400 can be a server or a combination of a server and a display, so long as it facilitates the dispatching personnel on duty to remotely monitor and operate the substation. This embodiment does not restrict the dispatching device 400. The telecontrol device 100 is used to upload the substation's telemetry and telesignaling signals to the dispatching device 400 via the main telecontrol channel 200 or the backup telecontrol channel 300, and to receive remote control commands issued by the dispatching device 400 via the main telecontrol channel 200 or the backup telecontrol channel 300, thereby enabling the dispatching personnel on duty to remotely operate the substation.

[0024] The main telecontrol channel 200 consists of two transmission sections. The first transmission section is made up of two spirally twisted wires, that is, the first transmission section is a twisted pair, and the second transmission section is made up of optical fiber. Figure 1 In the figure, the first transmission segment and the second transmission segment are represented by solid and dotted lines, respectively. One end of the first transmission segment is connected to the telecontrol device 100, and the other end is connected to the optical terminal installed in the substation. One end of the second transmission segment is connected to the optical terminal installed in the substation, and the other end is connected to the optical terminal installed in the machine room. The optical terminal installed in the machine room is then connected to the dispatching device 400 via wires. The two optical terminals use SDH technology. Figure 1 In the figure, SDH1 represents the optical terminal in the substation, and SDH2 represents the optical terminal in the computer room.

[0025] As the distance between the telecontrol device 100 and the dispatching device 400 increases, the distance of the second transmission segment also becomes longer, and the optical fiber distance becomes longer. Since long-distance optical fiber is susceptible to factors such as signal interference and transmission loss, the probability of disconnection increases. Therefore, in order to maintain normal communication between the telecontrol device 100 and the dispatching device 400 when the optical fiber is disconnected (the main telecontrol channel 200 is disconnected), a backup telecontrol channel 300 is deployed between the telecontrol device 100 and the dispatching device 400. The backup telecontrol channel 300 is a transmission channel established between the telecontrol device 100 and the dispatching device 400 through a wide area network. The backup telecontrol channel 300 is, for example, 4G / 5G.

[0026] In order to promptly detect a line break fault in the main remote control channel 200 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 a line break fault occurs in the main remote control channel 200, the present application proposes an online line break monitoring device for the 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.

[0027] like Figure 2 As shown, the online monitoring device 500 for disconnection of the electric power remote control channel includes a fault detection module 510, a switching module 520, a communication module 530, an indication module 540, a power supply module 550 and a control module 560. The control module 560 serves as the core module of the monitoring device 500 and is used to control the cooperation of other modules so that the monitoring device 500 can quickly detect disconnection faults in the main remote control channel 200 and can promptly activate the backup remote control channel 300 when a disconnection fault occurs in the main remote control channel 200.

[0028] The monitoring device 500 will be collectively referred to as a device below, and each module in the device will be described in detail.

[0029] The fault detection module 510 is provided on the main remote control channel 200. Figure 3The fault detection module 510 includes a voltage acquisition submodule 511 and a comparison submodule 512. The voltage acquisition submodule 511 primarily consists of an RSM485 chip, which has eight terminals. Terminals 1-8 are represented by VCC, GND, TXD, RXD, CON, RGND, A, and B, respectively. Specifically, the VCC terminal is the power supply terminal for the RSM485 chip, connected to the power module 550 and receiving a 3.3V voltage. A fuse is provided on the power supply terminal to prevent the voltage supplied to the RSM485 chip by the power module 550 from exceeding the voltage threshold and causing the RSM485 chip to burn out. The fuse is represented by SMD110. The GND terminal and the VCC terminal work together to ensure that the input voltage meets the voltage requirements of the RSM485 chip. The TXD terminal is connected to the comparison submodule 512 and is used to transmit signals from the RSM485 chip to the comparison submodule 512. The RXD terminal is connected to the control module 560 and is used to receive signals output by the control module 560. The CON terminal is also connected to the control module 560, which controls the operating state of the RSM485 chip, such as whether it enters the transmit or receive state. RGND is grounded. Terminal A is connected to one of the wires of the main remote control channel 200 to sample the voltage on that wire. Terminal B is connected to the other wire of the main remote control channel 200 to sample the voltage on the other wire.

[0030] Specifically, when the control module 560 controls the RSM485 chip via the CON terminal to enter the transmit state, the RSM485 chip transmits the voltages collected at terminals A and B to the comparison submodule 512. Comparison submodule 512 compares the voltages on the two conductors. If the voltages on the two conductors are equal, comparison submodule 512 outputs a digital level 1, indicating that the main telecontrol channel 200 is disconnected. Otherwise, comparison submodule 512 outputs a digital level 0, indicating that the main telecontrol channel 200 is connected. It should be noted that the main telecontrol channel 200 is determined to be disconnected when the voltages on the two conductors are equal because equal voltages on the two conductors mean that current cannot flow normally through the optical transceiver in the substation. A potential difference between the two conductors is required to form a closed loop, thereby ensuring normal communication between the telecontrol device 100 and the dispatch device 400.

[0031] It can be seen from this that the comparison submodule 512 has the function of comparing the sizes of two voltages, so the comparison submodule 512 can be a voltage comparator. This embodiment uses the LM393 comparator as the voltage comparator. In actual applications, it can be selected according to needs and this embodiment does not limit it.

[0032] The switching module 520 is provided at the common end of the main remote control channel 200 and the standby remote control channel 300. Figure 4As shown, the switching module 520 includes an input terminal 521, a first output terminal 522, a second output terminal 523, a U-shaped bracket 524, an electromagnet 525, a magnetic induction element 526, and an insulating plate 527. The input terminal 521 is connected to the telecontrol device 100 via the first transmission segment of the main telecontrol channel 200. The first output terminal 522 is connected to the main telecontrol channel 200, specifically to the first transmission segment of the main telecontrol channel 200. In other words, the first transmission segment of the main telecontrol channel 200 is divided into two sub-transmission segments: the input terminal 521 is connected to the sub-transmission segment closest to the telecontrol device 100, while the first output terminal 522 is connected to the sub-transmission segment closest to the optical terminal in the substation. The second output terminal 523 is connected to the backup telecontrol channel 300.

[0033] One end of the U-shaped bracket 524 is open and the interior is hollow. 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 the inner wall of one side of the U-shaped bracket 524. The specific connection method is not limited in this embodiment, and is based on ensuring that the U-shaped bracket 524 can function as a fixing point for 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. The circuit connecting the electromagnet 525 and the power module 550 is provided with an electric switch. The on and off of the electric switch is controlled by the control module 560. The electric switch is not shown in the drawings. The magnetic induction member 526 is located near the open end of the U-shaped bracket 524. The magnetic induction member 526 is elongated and, in this embodiment, is an armature. One end of the magnetic induction member 526 is hinged to the sidewall of the open end of the U-shaped bracket 524. The hinged end of the magnetic induction member 526 serves as the input end 521 of the switching module 520. An insulating plate 527 is made of insulating material and is disposed on the sidewall of the open end of the U-shaped bracket 524, opposite the sidewall where the input end 521 is located. The first output end 522 and the second output end 523 are both disposed on the 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 member 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 member 526 located between the first output end 522 and the second output end 523 serves as the movable end.

[0034] In order to restrict the movable end from performing only vertical reciprocating motion between the first output end 522 and the second output end 523, a spring 528 is further provided at one end of the magnetic induction member 526 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 electric switch to be turned off, there is no conduction between the power module 550 and the electromagnet 525, and the electromagnet 525 is not powered. At this time, the magnetic induction member 526 falls under the action of gravity until the movable end abuts 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 electric switch to be turned on, the power module 550 supplies power to the electromagnet 525, and the electromagnet 525 generates a magnetic field after being powered on. Under the action of the magnetic field, the magnetic induction member 526 gradually moves toward the end away from the electromagnet 525, that is, moves vertically upward, until the movable end abuts the second output end 523, at which point the input end 521 is connected to the second output end 523.

[0035] like Figure 5 As shown, the movable end includes a lower end surface 5261 and an upper end surface 5263. The lower end surface 5261 is disposed toward the first output end 522, while the upper end surface 5263 is disposed toward the second output end 523. Three first contacts 5262 are disposed on the lower end surface 5261, and a second contact 5221 corresponding to each first contact 5262 is disposed on the first output end 522. When the movable end is connected to the first output end 522, the three first contacts 5262 disposed on the lower end surface 5261 respectively contact the corresponding second contacts 5221. Furthermore, three third contacts 5264 are disposed on the upper end surface 5263, and a fourth contact 5231 corresponding to each third contact 5264 is disposed on the second output end 523. When the movable end is connected to the second output end 523, the three third contacts 5264 disposed on the upper end surface 5263 respectively contact the corresponding fourth contacts 5231. In this embodiment, each set of contacts (the first contact 5262 and the second contact 5221 corresponding to the first contact 5262 or the third contact 5264 and the fourth contact 5231 corresponding to the third contact 5264) is used to transmit a signal on a line, such as a signal on a transmitting line, a receiving line, or a ground line. Each time the active end is connected to one of the output ends, three sets of contacts are in contact at the same time, thereby transmitting the signals on the transmitting line, the receiving line, and the ground line at the same time, thereby ensuring normal communication of the main remote control channel 200 or the backup remote control channel 300 when it is turned on.

[0036] In the prior art, in order to ensure the simultaneous transmission of signals of three lines, a relay is usually set on each line, and three independent relays respectively control the signal transmission of their respective lines. However, in this embodiment, by setting the movable end to move in one direction, there are three sets of contacts in contact with each other. Compared with the prior art, the number of relays set is reduced, and the volume of the device is saved. At the same time, when the magnetic induction component 526 makes a vertical reciprocating motion, the terminals on the movable end will contact 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 controlled to be turned on, and the backup remote control channel 300 is used as a transmission channel for information exchange between the remote control device 100 and the dispatching device 400.

[0037] 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 is used to communicate with the Ethernet module, and is used to send the operating status information of the main remote control channel 200 and the backup remote control channel 300 to the dispatch device 400 via the Ethernet module. The other RS485 module is used to connect to a PC to dynamically modify the Ethernet IP address through the PC.

[0038] 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 on 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 illuminate; otherwise, the first indicator light 541 is turned off. When the backup remote control channel 300 is in the on 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 illuminate; otherwise, the second indicator light 542 is turned off. The illumination of the first indicator light 541 and the second indicator light 542 facilitates the operator to intuitively understand the operating status of the main remote control channel 200 and the backup remote control channel 300. The operator can be a dispatcher on duty or an on-site maintenance personnel.

[0039] In this embodiment, to facilitate detection of the operating status of the backup remote control channel 300, a fault detection module 510 can be provided at the second output terminal 523 of the switching module 520. The fault detection module 510 provided at the second output terminal 523 detects the operating status of the backup remote control channel 300. The fault detection module 510 employed in this embodiment comprises the same components and employs the same detection principles as the fault detection module 510 provided on the main remote control channel 200, and therefore will not be further described herein. Of course, other detection modules, such as a transceiver, can also be provided on the backup remote control channel 300 to detect the strength of the radio frequency signal transmitted by the backup remote control channel 300 and determine the operating status of the backup remote control channel 300.

[0040] In this embodiment, the control module 560 uses an MCU, specifically an STM32 chip. In actual applications, other chips can also be used to control the coordination of other modules, 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 dispatch 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.

[0041] The control module 560 is equipped with a forced-switch button, an automatic-switch button, and a manual-switch button. The forced-switch button is used to control the switching module 520 to force a closed-loop operation. That is, when the operator clicks the forced-switch button, the switching module 520 is forced to switch the current power telecontrol channel, such as from the main telecontrol channel 200 to the backup telecontrol channel 300, or from the backup telecontrol channel 300 to the main telecontrol channel 200. The automatic-switch button and the manual-switch button are used to provide the operator with a choice. If the operator clicks the automatic-switch button, the system enters automatic mode, in which the fault detection module 510 automatically monitors the operating status of the main telecontrol channel 200, and the control module 560 controls the switching module 520 accordingly. If the operator clicks the manual-switch button, the system enters manual mode, in which the fault detection module 510 monitors the operating status of the main telecontrol channel 200, but the operator manually controls the switching module 520 to perform the switching.

[0042] In order to further illustrate the working process of the device of this embodiment, the present application also provides a method for online monitoring of disconnection of a power telecontrol channel, which is executed by the above-mentioned device, such as Figure 6 As shown, the method may include the following steps S1 to S16.

[0043] Step S1: Determine the operator's click operation. If the operator clicks the automatic switch button, the device enters the automatic mode and proceeds to step S2; if the operator clicks the manual switch button, the device enters the manual mode and proceeds to step S12.

[0044] 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 its operating status based on the collected voltage. The operating status of the main remote control channel 200 is then used to determine whether the main remote control channel 200 is disconnected. Specifically, if the main remote control channel 200 is disconnected, it indicates that the main remote control channel 200 is disconnected, and the process proceeds to step S3. If the main remote control channel 200 is connected, it indicates that the main remote control channel 200 is connected, and the process proceeds to step S7.

[0045] Step S3: Determine whether the input terminal 521 of the switching module 520 is 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 so, proceed to step S9.

[0046] Step S4: Sending a switching request to the scheduling device 400. The control module 560 generates a switching request and sends the switching request to the scheduling device 400 via the RS485 module and the Ethernet module. In this embodiment, the switching request is a request for the scheduling device 400 to issue a switching instruction. The switching instruction is used to drive the control module 560 to control the input terminal 521 of the switching module 520 to switch from being connected to the first output terminal 522 to being connected to the second output terminal 523.

[0047] Step S5: Receiving the switching instruction. After the dispatching device 400 receives the switching request, the dispatching staff on duty confirms in the background whether to control the switching module 520 to switch. If the switching is confirmed, the dispatching device 400 generates a switching instruction and returns the switching instruction to the control module 560 in the original path.

[0048] Step S6: Control the input terminal 521 of the switching module 520 to switch from being connected to the first output terminal 522 to being connected to the second output terminal 523 , and after the control is completed, enter step S9 .

[0049] 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.

[0050] Step S8: Execute an anti-jitter algorithm. The anti-jitter algorithm is used to calculate a specified interval time, which refers to the interval time between the input terminal 521 of the switching module 520 switching from the first output terminal 522 to the second output terminal 523, to avoid a ping-pong effect caused by a short switching interval.

[0051] Step S9: Monitoring the operating status of the backup remote control channel 300. The fault detection module 510 provided on the second output terminal 523 collects the voltage value at 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 provided on the backup remote control channel 300 can be used to determine the operating status of the backup remote control channel 300. This allows determining whether the backup remote control channel 300 is activated when the main remote control channel 200 is disconnected.

[0052] Step S10: Monitoring the switching status of the switching module 520. The control module 560 controls the electrical switch provided between the power module 550 and the electromagnet 525 to determine the switching status of the switching module 520. The switching status of the switching module 520 is inferred based on the on / off state of the electrical switch. This determines 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, thereby verifying whether the backup remote control channel 300 is enabled.

[0053] 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 dispatcher can know the working status of the device. After the sending is completed, return to step S2 to implement the next round of monitoring.

[0054] Step S12: Waiting for key input. In manual mode, the device can either support the operator clicking the forced switch button, i.e., forcibly controlling the switching module 520 to switch the current power telecontrol channel, or accept manual switching by the operator when the main telecontrol channel 200 is disconnected. In other words, the device only accepts the operator clicking the forced switch button when the main telecontrol channel 200 is disconnected.

[0055] Step S13: It is detected that the operator clicks a button, and the button clicked is the forced cut button.

[0056] Step S14: Monitor the switching status of the switching module 520. There are two switching situations of 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, the process proceeds to step S15; if the second situation occurs, the process proceeds to step S16.

[0057] Step S15 : Control the input terminal 521 of the switching module 520 to switch from being connected to the first output terminal 522 to being connected to the second output terminal 523 , and return to step S12 after the control is completed.

[0058] Step S16 : Control the input terminal 521 of the switching module 520 to switch from being connected to the second output terminal 523 to being connected to the first output terminal 522 , and return to step S12 after the control is completed.

[0059] It can be seen that the device of this embodiment supports multiple working modes, and the operator can select an adapted working mode as needed. In the automatic mode, there is no need for the operator to pay real-time attention to the operating status of the main remote control channel 200, nor is there any need for the operator to manually control the switching task of the switching module 520. Instead, the device automatically controls the entire process, reducing human involvement and improving the timeliness and accuracy of the power remote control channel monitoring. In the manual mode, the operator can switch the switching module 520 as needed. If one of the remote control channels needs to be repaired, another remote control channel can be enabled, so that the purpose of repair and risk elimination can be achieved without affecting the normal communication between the remote control device 100 and the dispatching device 400, making the device of this embodiment suitable for a variety of application scenarios.

[0060] In a possible implementation, before executing the anti-shake algorithm in step S8, it is necessary to construct the algorithm so as to obtain the specified interval time based on the constructed algorithm. The specific construction process is as follows.

[0061] First, choose the model architecture of the algorithm. The deep Q-network (DQN) is used as the basic architecture, combining deep learning and Q-learning to process high-dimensional state space, and using convolutional neural networks (CNN) or multi-layer perceptrons (MLP) to extract and process the operating status information of the main remote control 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 operating states, and is used to guide the model to select the optimal action.

[0062] Secondly, define the state space. In the scenario where only the roles of the telecontrol channels and the historical switching behaviors are considered, the state space s is simplified to: 1. Telecontrol channel role information. Including the main telecontrol channel identification: , indicating that the current active telecontrol channel is the main telecontrol channel 200 or the backup telecontrol channel 300, represented by 1 and 2 respectively; also includes the telecontrol channel role stability: ; 2. Historical switching behavior information. Including the most recent switching time (seconds), switching frequency (times / second), ping-pong switch flag , P indicates whether the most recent handover is a ping-pong handover. Before the telecontrol device 100 and the dispatching device 400 can exchange information, they need to establish a transmission channel between them through the main telecontrol channel 200 or the backup telecontrol channel 300. Frequent switching between the main telecontrol channel 200 and the backup telecontrol channel 300 may cause the establishment to fail, affecting the final information exchange. Therefore, this embodiment sets the following settings: if there are more than two switches within one minute, the last switch is considered a ping-pong handover. That is, when f>2 / 60 (times / second), p=1, and the current switch is a ping-pong handover. Otherwise, when f≤2 / 60 (times / second), p=0, and the current switch is not a ping-pong handover. 3. The state vector is expressed as: .

[0063] Then, define the action space. Specifically, the action space For the adjustment operation of the interval time, set it as a discrete action set A, ,in, Adjust the step size for the preset interval time. The action means reducing the current interval time. ,reduce , remain unchanged, increase ,Increase .

[0064] Through the above discrete adjustment actions, the model can flexibly adjust the interval time.

[0065] Finally, we design a reward function. The reward function R is used to evaluate the quality of each action and guide the model to learn to suppress the ping-pong effect, including: 1. Ping-Pong Switch Penalty: ,in, is the time interval between two switches, k1 is the penalty coefficient; 2. Reward for telecontrol channel stability: , where k2 is the reward coefficient, s t The time percentage of the current telecontrol channel continuously serving as the main telecontrol channel; 3. Switching frequency penalty: , where k3 is the penalty coefficient, f max To preset the maximum acceptable frequency; Based on the ping-pong switching penalty, telecontrol channel stability reward, and switching frequency penalty, the comprehensive reward function is calculated: .

[0066] In this embodiment, the constructed algorithm model needs to be trained before it can be put into use. The training process is as follows: First, collect training data. Every t seconds, collect the switching status s of the switching module 520, select the switching action a according to the current strategy π, execute the switching action a and observe the reward R and the next state , get training data .

[0067] 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, is the Q value function of the target network, is the learning rate, is the discount factor.

[0068] Finally, optimize the policy π. Greedy strategy for optimization: ,in, Decay linearly from 1 to 0.1, with a decay period of 10,000 steps.

[0069] It can be seen that through the above model training process, the algorithm model is strengthened to focus on the historical switching behavior itself. By taking the remote channel role stability and switching frequency as the core optimization target, it can still effectively suppress the ping-pong effect without relying on the physical layer signal quality and business needs. In actual application, the penalty coefficient can also be customized as needed. and the interval time step ,in, The value of will determine the magnitude of the final output of the above-mentioned comprehensive reward function. In practical applications, if the primary goal is to suppress the ping-pong effect during switching operations by the switching module 520, then the value of k1 needs to be greater than the values ​​of k2 and k3. Furthermore, k1 needs to maintain a relative ratio to k2 and k3. For example, k1 can be 2-5 times the values ​​of k2 and k3. In a specific example, when k1 is 6, k2 and k3 can be 2 and 3, respectively. Similarly, if the primary goal is to maintain the stability of the currently used telecontrol channel and avoid communication interruptions caused by frequent switching, then k2 can be set to 2-3 times the values ​​of k1 and k3. The reason for setting this value to 2-3 times is that suppressing the ping-pong effect during switching operations is also important, so the difference between k2 and k1 should not be too large. Similarly, if the primary goal is to reduce the switching frequency of the telecontrol channel, then k3 can be set to 2-3 times the values ​​of k1 and k2. In this embodiment, the maximum values ​​of k1, k2, and k3 are 20.

[0070] The time required for the switching module 520 to perform the switching operation is the time required for the switching module 520 to perform the switching operation. When the main remote control channel 200 is disconnected and the backup remote control channel 300 needs to be activated, in order to ensure the timeliness of the activation of the backup remote control channel 300, The typical value of the time required for ordinary relay switching is 200ms, that is, The minimum can be 400ms. In addition, in the operation and maintenance of the power telecontrol channel, the optical fiber repair time is generally 2 hours. When the switching time is greater than 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 is between 10s and 60s.

[0071] By selecting adaptive parameter values, the accuracy of the trained algorithm model can be guaranteed, and the trained algorithm model is then stored in the control module 560 and called by the control module 560 as needed.

[0072] It should be noted that the order of execution of the steps in the above embodiments does not necessarily imply a specific order of execution. The order of execution of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application. In practical applications, all possible implementation methods described above can be combined in any manner to form possible embodiments of the present application, and will not be described in detail here.

[0073] Based on the same inventive concept, an embodiment of the present application also provides an electronic device, including a processor and a memory, wherein a computer program is stored in the memory, and the processor is configured to run the computer program to execute a method for online monitoring of line breaks in a power telecontrol channel of any one of the above embodiments.

[0074] In an exemplary embodiment, an electronic device is provided, such as Figure 7 As shown, Figure 7 The electronic device 700 shown 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 further include a transceiver 704. It should be noted that in actual applications, the number of transceivers 704 is not limited to one, and the structure of the electronic device 700 does not constitute a limitation on the embodiments of the present application.

[0075] 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 device, transistor logic device, hardware component, or any combination thereof. It may 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 computing functions, such as a combination of one or more microprocessors, or a combination of a DSP and a microprocessor.

[0076] Bus 702 may include a path for transmitting information between the above components. Bus 702 may be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus. Bus 702 may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, Figure 7 Only one thick line is used in the diagram, but this does not mean that there is only one bus or one type of bus.

[0077] The memory 703 may be a ROM (Read Only Memory) or other type of static storage device that can store static information and instructions, a RAM (Random Access Memory) or other type of dynamic storage device that can store information and instructions, or an EEPROM (Electrically Erasable Programmable Read Only Memory), a CD-ROM (Compact Disc Read Only Memory) or other optical disk storage, optical disk storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.

[0078] The memory 703 is used to store computer program codes for executing the solution of the present application, and the execution is controlled by the processor 701. The processor 701 is used to execute the computer program codes stored in the memory 703 to implement the contents shown in the above method embodiments.

[0079] Among them, electronic devices include but are not limited to: mobile terminals such as mobile phones, laptops, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Figure 7 The electronic device shown is merely an example and should not limit the functions and scope of use of the embodiments of the present application.

[0080] Based on the same inventive concept, an embodiment of the present application further provides a storage medium storing a computer program, wherein the computer program is configured to execute a method for online monitoring of line breaks in a power telecontrol channel according to any one of the above embodiments when running.

[0081] Those skilled in the art will clearly understand that the specific working processes of the systems, devices, and modules described above can refer to the corresponding processes in the aforementioned method embodiments, and for the sake of brevity, they will not be further described here.

[0082] Those skilled in the art will understand that the technical solution of the present application, in essence, or in whole or in part, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes a number of program instructions that cause an electronic device (such as a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application when the program instructions are executed. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, a mobile hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0083] Alternatively, all or part of the steps of implementing the aforementioned method embodiments may be accomplished by hardware related to program instructions (such as electronic devices such as personal computers, servers, or network devices), and the program instructions may be stored in a computer-readable storage medium. When the program instructions are executed by a processor of an electronic device, the electronic device executes all or part of the steps of the methods described in the various embodiments of the present application.

[0084] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that, within the spirit and principles of the present application, they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate from the protection scope of the present application.

Claims

1. An online monitoring device for disconnection of a power telecontrol channel, characterized in that: include: A switching module (520) comprises an input end (521), a first output end (522), and a second output end (523); wherein the input end (521) is connected to a remote control device (100), the first output end (522) is connected to a main remote control channel (200), the second output end (523) is connected to a backup remote control channel (300), and the ends of the main remote control channel (200) and the backup remote control channel (300) away from the switching module (520) are both connected to a dispatching device (400); A fault detection module (510) comprises a voltage acquisition submodule (511) and a comparison submodule (512), wherein an acquisition terminal of the voltage acquisition submodule (511) is provided on the main remote control channel (200) and is used to acquire the voltage of the main remote control channel (200), and the comparison submodule (512) obtains an operating state of the main remote control channel (200) based on the voltage, wherein the operating state is either a disconnected state or a conducting state; A control module (560) is connected to the fault detection module (510) and the switching module (520) respectively, and is used to control the input end (521) to switch from being connected to the first output end (522) to being connected to the second output end (523) when the main remote control channel (200) is in a disconnected state.

2. The online monitoring device for disconnection of electric power telecontrol channel according to claim 1, characterized in that: The switching module (520) further includes a U-shaped bracket (524), an electromagnet (525), a magnetic induction component (526) and an insulating plate (527); The electromagnet (525) is located in the inner cavity of the U-shaped bracket (524) and is fixedly connected to at least one inner wall of the U-shaped bracket (524); The magnetic induction component (526) is arranged near the open end of the U-shaped bracket (524), one end of the magnetic induction component (526) is hinged to the side wall of the open end of the U-shaped bracket (524), and the end of the magnetic induction component (526) hinged to the U-shaped bracket (524) serves as the input end (521) of the switching module (520); The insulating plate (527) is arranged on the side wall of the open end of the U-shaped bracket (524) and is 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 arranged on the plate surface of the insulating plate (527) facing the input end (521), and the first output end (522) is 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); one 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. The movable end is subjected to the magnetic force of the magnetic field generated by the electromagnet (525) and switches between being connected to the first output end (522) and being connected to the second output end (523).

3. The online monitoring device for disconnection of a power telecontrol channel according to claim 2, characterized in that: The active end switches between being connected to the first output end (522) and being connected to the second output end (523) at intervals of a specified time.

4. The online monitoring device for disconnection of a power telecontrol channel according to claim 2, characterized in that: The movable end comprises a lower end surface (5261) and an upper end surface (5263), the lower end surface (5261) is arranged toward the first output end (522), and the upper end surface (5263) is arranged toward the second output end (523); Three first contacts (5262) ​​are provided on the lower end surface (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) ​​provided on the lower end surface (5261) are in contact with the second contacts (5221) corresponding to each of the first contacts; Three third contacts (5264) are provided on the upper end surface (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) provided on the upper end surface (5263) are in contact with the fourth contacts (5231) corresponding to each of the third contacts.

5. The online monitoring device for disconnection of electric power telecontrol channel according to claim 1, characterized in that: The main remote control channel (200) is formed by spirally twisting two wires; The voltage acquisition submodule (511) is an RSM485 chip, and the RSM485 chip comprises an A terminal and a B terminal, and the A terminal and the B terminal both serve as acquisition terminals of the RSM485 chip; The A terminal is connected to one of the wires in the main remote control channel (200) and is used to collect the voltage on the wire; The B terminal is connected to another wire in the main remote control channel (200) and is used to collect the voltage on the other wire.

6. The online monitoring device for disconnection of electric power telecontrol channel according to claim 5, characterized in that: The RSM485 chip further comprises a TXD terminal, wherein the TXD terminal is used to send the voltages of the two wires to the comparison submodule (512) respectively; The comparison submodule (512) compares the voltages on the two wires, and when the voltages on the two wires are equal, determines that the main remote control channel (200) is in a disconnected state.

7. The online monitoring device for disconnection of electric power telecontrol channel according to claim 1, characterized in that: It also includes a communication module (530), and the control module (560) remotely communicates with the scheduling device (400) or a PC via the communication module (530).

8. The on-line monitoring device for disconnection of a power telecontrol channel according to claim 1, characterized in that: It also includes an indication module (540), the indication module (540) including a first indicator light (541) and a second indicator light (542), the first indicator light (541) and the second indicator light (542) both being connected to the control module (560); The control module (560) is configured to: When the main remote control channel (200) is in a conducting state, the first indicator light (541) is controlled to light up; When the standby remote control channel (300) is in the conducting state, the second indicator light (542) is controlled to light up.

9. A method for online monitoring of disconnection of a power telecontrol channel, applied to an online monitoring device for disconnection of a power telecontrol channel as claimed in any one of claims 1 to 8, characterized in that: include: collecting the voltage of the main remote control channel (200) to obtain the operating state of the main remote control channel (200); When it is determined that the main remote control channel (200) is in a disconnected state, judging whether the input end (521) is connected to the second output end (523); If so, the operating state of the standby remote control channel (300) is detected, and when the operating state of the standby remote control channel (300) is in the on state, the standby remote control channel (300) is used as a transmission channel for information exchange between the remote control device (100) and the dispatching device (400); If not, a switching request is sent to the dispatching device (400), and upon receiving the switching instruction returned by the dispatching device (400), the input end (521) is controlled to be connected to the second output end (523), and the operating state of the standby remote control channel (300) is detected. When the operating state of the standby remote control channel (300) is the on state, the standby remote control channel (300) is used as a transmission channel for information exchange between the remote control device (100) and the dispatching device (400).

10. The method according to claim 9, characterized in that When it is determined that the main remote control channel (200) is in a conducting state, the method further comprises: Retrieving the operating status of the main remote control channel (200) during the last monitoring; If the main remote control channel (200) is in a disconnected state during the last monitoring, an anti-jitter algorithm is executed, wherein the anti-jitter algorithm is used to calculate an interval specified time, wherein the interval specified time refers to the interval length when the input end (521) of the switching module (520) switches from being connected to the first output end (522) to being connected to the second output end (523).

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