Relay protection debugging synchronous triggering device and method

Abstract

The invention relates to the field of relay protection device debugging, and provides a relay protection debugging synchronous triggering device and method, which are characterized in that a triggering signal simulation module and a touch module are positioned in the same clock source through a clock module, so that the debugging accuracy is improved; three modes of timing triggering, synchronous triggering and external signal triggering are supported, and the test requirements of multiple scenes can be met. The multi-channel synchronous triggering module is used for distributing signals to the corresponding tentacle modules; the tentacle module can respectively control the connection / disconnection of an input terminal of the relay protection device, the connection / disconnection of a port of the relay protection tester and the disconnection of the air switch according to an application scene; the control module can receive and process a feedback signal and calculate an action time difference in real time; and automatic fault detection and standby module switching are realized, so that the fault module can be quickly isolated and the standby module can be started. The method can solve the problem that protection logic action conditions are difficult to synchronize due to scattered operation sites of a substation site, and can replace manual work to realize remote cooperation and maximize synchronization.

Description

Technical Field

[0001] The invention relates to the technical field of relay protection device debugging of an electric power system, and in particular to a relay protection debugging synchronous triggering device and method. Background Art

[0002] In the power system, a relay is an electronic control device used to control the switching operation of a larger current through a smaller current in the circuit. It has the function of isolating the control and controlled circuits. The relay is mainly composed of an electromagnet, an armature, a reaction spring and contacts. When the electromagnet is energized, it generates a magnetic field, attracting the armature to move the contacts, thereby opening or closing the circuit. Relays are widely used in automatic control systems.

[0003] Relay protection devices are important protection measures to ensure the safe and stable operation of power equipment in power systems. They can detect and isolate fault areas in a timely manner, prevent accidents from spreading, and ensure the normal operation of power systems. In order to ensure the reliability and accuracy of relay protection devices, they need to be debugged and tested regularly.

[0004] Relay protection device debugging includes simulating various types of faults to verify the response speed, sensitivity and correctness of the protection device. In the actual debugging process, in order to simulate the operating status of the real power system, multiple test devices need to be triggered synchronously to generate consistent test signals.

[0005] At present, when relay protection professionals carry out device commissioning and transmission testing, there are still situations where multiple people communicate by phone and cooperate manually, which results in low work efficiency and lack of tacit cooperation. The main application scenarios include:

[0006] First, for the joint debugging of the longitudinal fiber-optic differential protection function of the line protection device, it is necessary to add fault quantities to the protection devices on both sides of the line at the same time to verify the operation of the protection devices on both sides of the line; second, when debugging or testing the standby automatic switching device under load, it is necessary to disconnect multiple air switches at different positions at the same time to meet the test conditions.

[0007] When conducting the above test projects, the coordination of operations is carried out by making phone appointments and manual operations, which results in time delays. In the specific operation process, there is a certain probability of unsuccessful coordination. During the 220kV standby automatic switch load test at a 220kV substation in 2023, two people simultaneously disconnected two bus voltage circuit breakers located in different cabinets. Due to differences in personal reaction time, the circuit breaker disconnection time was not synchronized, resulting in the failure of the second set of standby automatic switch devices to operate, which had an adverse impact on the safe and stable operation of the power grid. During device debugging and transmission testing, it is sometimes necessary to trigger multiple relays separately, which is cumbersome and inefficient. It requires a large number of debugging personnel to intervene, increasing the workload. At present, there is a lack of effective synchronous triggering mechanism, which cannot meet the debugging needs of complex relay protection systems.

[0008] Based on this, the present invention provides a relay protection debugging synchronization triggering device and method, which can replace manual remote coordination operation and achieve maximum synchronization to solve the problems of the above-mentioned substation site being scattered, protection logic action conditions being difficult to meet synchronously, and requiring a large amount of human resources to intervene. Summary of the invention

[0009] The purpose of the present invention is to solve the shortcomings of the prior art and provide a relay protection debugging synchronization triggering device and method to solve the problem that the protection logic action conditions are difficult to meet synchronously due to the scattered operation sites at the substation site. It can replace manual remote coordination operation and achieve maximum synchronization.

[0010] In order to achieve the above object, the present invention adopts the following technical solutions:

[0011] A relay protection debugging synchronous trigger device comprises: a control module, a trigger signal simulation module, a clock module, a multi-channel synchronous trigger module, a signal transmission module, and a tentacle module; the control module, the trigger signal simulation module, and the clock module are arranged at a master station; the multi-channel synchronous trigger module and the tentacle module are arranged at a slave station, and the tentacle module is connected to a terminal required to be connected in relay protection debugging; the signal transmission module is used for communication between the master station and the slave station;

[0012] The trigger signal simulation module is used to generate a trigger signal for testing and debugging;

[0013] The tentacle module is used to receive the trigger signal sent by the trigger signal simulation module and perform corresponding on / off actions;

[0014] The clock module, the input end is connected to the clock output port of the trigger signal simulation module, receives the PPS signal output from the trigger signal simulation module, and is used to synchronize its own clock with the clock of the trigger signal simulation module; the output end is connected to multiple input ports of the multi-channel synchronous trigger module through the signal transmission module, and multiple output ends of the multi-channel synchronous trigger module are connected to the trigger interface of the tentacle module, so as to make the trigger signal simulation module and the tentacle module be in the same clock source;

[0015] The multi-channel synchronous trigger module is used to convert the trigger start / stop pulse signal sent by the clock module into a contact signal, and control the connection / disconnection of the tentacle module at the same time;

[0016] The control module, whose output end is connected to the input end of the trigger signal simulation module, is used to control the output state of the trigger signal simulation module; the output end is connected to the input end of the clock module, and is used to control the clock module, and sends the pulse signal for triggering start / stop to the multi-channel synchronous trigger module through the signal transmission module, and converts the pulse signal into a contact signal to control the corresponding tentacle module to be turned on / off through the multi-channel synchronous trigger module; and simultaneously receives and triggers the feedback signals of the signal simulation module and the tentacle module, and calculates the action time difference of each tentacle module according to the feedback signals;

[0017] The control module sends signals to each tentacle module and trigger signal simulation module according to the start and stop triggers set in the trigger mode, and synchronously measures the corresponding time value of each tentacle module at the connection / disconnection point through the clock module and the multi-channel synchronous trigger module, and feeds back to the control module; at the same time, measures the corresponding time value of the trigger signal simulation module at the start / stop point, and feeds back to the control module.

[0018] Preferably, the signal transmission module includes a first transmission module and a second transmission module, the first transmission module is arranged at the master station, and the second transmission module is arranged at the slave station; the signal transmission module 5G communication module and interface circuit are responsible for receiving and transmitting trigger signals, and the 5G communication module realizes real-time transmission of signals through a low-latency protocol stack. The 5G communication module reduces communication delays through a low-latency protocol stack, reduces signal interference through signal modulation and demodulation and spectrum management, and improves signal transmission quality.

[0019] Preferably, the clock module calibrates the clock of each node through periodic timestamp exchange to ensure synchronization accuracy.

[0020] Preferably, the multi-channel synchronous trigger module realizes multi-channel signal distribution through a programmable logic controller.

[0021] Preferably, the trigger signal simulation module outputs a corresponding trigger signal according to the trigger mode output by the control module, and the trigger mode includes three trigger modes: timing trigger, synchronous trigger and external signal trigger.

[0022] Preferably, the timing trigger sets a specific trigger time through the control module. When the trigger time is reached, the trigger signal simulation module sends a trigger signal, and the signal is sent to the multi-channel synchronous trigger module via the signal transmission module. The multi-channel synchronous trigger module converts the pulse signal into a contact signal to control the corresponding tentacle module to be turned on / off. At the same time, the trigger signal simulation module and the tentacle module send feedback signals to the control module, and the control module calculates the action time difference of each tentacle module according to the feedback signal;

[0023] The synchronous trigger passes through the control module, controls the trigger signal simulation module to send out a trigger signal, and sends the signal to the multi-channel synchronous trigger module through the signal transmission module. The multi-channel synchronous trigger module converts the pulse signal into a contact signal to control the corresponding tentacle module to turn on / off. At the same time, the trigger signal simulation module and the tentacle module send feedback signals to the control module, and the control module calculates the action time difference of each tentacle module according to the feedback signal;

[0024] The external signal trigger receives the external trigger signal through the standardized signal interface of the control module, sends the trigger signal through the control trigger signal simulation module, sends the signal to the multi-channel synchronous trigger module through the signal transmission module, and the multi-channel synchronous trigger module converts the pulse signal into a contact signal to control the corresponding tentacle module to be turned on / off. At the same time, the trigger signal simulation module and the tentacle module send feedback signals to the control module, and the control module calculates the action time difference of each tentacle module according to the feedback signal; the clock module performs time synchronization based on the IEEE 1588PTP protocol.

[0025] Preferably, the trigger signal simulation module, clock module, multi-channel synchronous trigger module, signal transmission module and tentacle module are each provided with a set of spare ones.

[0026] Preferably, the tentacle module controls the connection / disconnection of the input terminal of the relay protection device, the connection / disconnection of the port of the relay protection tester, and the disconnection of the air switch respectively.

[0027] Preferably, the tentacle module uses a relay to control the short circuit and disconnection between two independent pins of the connector to realize the corresponding connection / disconnection action. The tentacle module that controls the connection / disconnection of the relay protection device input terminal has two independent pins of its connector connected to the relay protection device input terminal through a connecting wire; the tentacle module that controls the connection / disconnection of the relay protection tester port has two independent pins of its connector connected to a banana plug, and the two independent pins of the connector are connected to the control relay protection tester port through a connecting wire with a banana plug; the tentacle module that controls the connection / disconnection of the air switch has two independent pins of its connector connected to the electromagnetic lock input terminal through a connecting wire, and the bottom of the electromagnetic lock tongue is against the top of the air switch operating handle.

[0028] Another object of the present invention is to provide a method for performing relay protection debugging synchronous triggering using the above relay protection debugging synchronous triggering device, comprising the following steps:

[0029] S1, connecting the input of the tentacle module in parallel to the multi-channel parallel output port of the multi-channel synchronous trigger module of the above relay protection debugging synchronous trigger device;

[0030] S2, connecting the power lines of the tentacle modules, the trigger signal simulation module, the clock module, the signal transmission module and the multi-channel synchronous trigger module;

[0031] S3, action time debugging;

[0032] S3.1, calculate the time difference;

[0033] The trigger mode used for calibration is called in the control module, and the trigger signal simulation module is controlled to generate a corresponding trigger signal, and the signal is sent to the multi-channel synchronous trigger module through the signal transmission module. The multi-channel synchronous trigger module converts the pulse signal into a contact signal to control the corresponding tentacle module to be turned on / off. At the same time, the trigger signal simulation module and the tentacle module send feedback signals to the control module, and the control module calculates the action time difference of each tentacle module according to the feedback signal;

[0034] S3.2, determine whether the time difference meets the requirements;

[0035] If the time difference is less than 3 seconds, the tentacle module connector pin is connected to the terminal that needs to be connected in the relay protection debugging, and the test is ready to start; if the time difference is greater than 3 seconds, the device self-checks, and the corresponding module whose delay exceeds the threshold is switched to its standby module, and step S3.1 is repeated to check the corresponding module whose delay exceeds the threshold at the same time, until the time difference is less than 3 seconds, the tentacle module connector pin is connected to the terminal that needs to be connected in the relay protection debugging, and the test is ready to start;

[0036] S4. According to the requirements of relay protection professional for device commissioning and transmission test, select the corresponding trigger mode and perform synchronous triggering of relay protection commissioning;

[0037] The control module sends signals to each tentacle module and trigger signal simulation module according to the start and stop triggers set in the trigger mode, and synchronously measures the corresponding time value of each tentacle module at the connection / disconnection point through the clock module and the multi-channel synchronous trigger module, and feeds back to the control module; at the same time, measures the corresponding time value of the trigger signal simulation module at the start / stop point, and feeds back to the control module;

[0038] If the time difference is greater than 3 seconds, the device will perform self-check, switch the corresponding module whose delay exceeds the threshold to its standby module, repeat step S3.1 and check the corresponding module whose delay exceeds the threshold at the same time until the time difference is less than 3 seconds.

[0039] The present invention discloses a relay protection debugging synchronous triggering device and method having the following beneficial effects.

[0040] 1. High-precision synchronization: Time synchronization is performed through the clock module based on the IEEE 1588PTP protocol. The trigger signal simulation module and the tentacle module are in the same clock source, which improves the accuracy of testing and debugging.

[0041] 2. Real-time signal transmission: The signal transmission module adopts 5G communication technology, uses a low-latency protocol stack and bandwidth allocation algorithm to achieve real-time signal transmission, reduce communication delays, and improve the overall response speed of the system.

[0042] 3. Multi-mode triggering: supports three modes: timing triggering, synchronous triggering and external signal triggering, which can adapt to different test requirements and improve the applicability of the system. The multi-channel synchronous trigger module is implemented through a programmable logic controller, which distributes signals to the corresponding tentacle modules; the control module can receive and process feedback signals, calculate the action time difference in real time, and adjust according to the calculation results, automatically detect faults and switch to backup modules, and can quickly isolate the faulty module and enable the backup module to ensure the continuous and stable operation of the system.

[0043] 4. It improves the debugging efficiency, reduces the debugging time and labor cost, adapts to different types of relay protection systems, and has a wide range of application prospects. The development of relay protection debugging synchronization trigger device can solve the problem that the substation site is scattered and the protection logic action conditions are difficult to meet synchronously. It can replace manual remote coordination operation, achieve maximum synchronization, and meet the debugging needs of various types and models of relay protection devices and safety devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a schematic diagram of the principle of the synchronous triggering device for relay protection debugging of the present invention.

[0045] Figure 2 It is a flow chart of the synchronous triggering method for relay protection debugging of the present invention.

[0046] Figure 3 It is a schematic diagram of the connection between the tentacle module of the present invention and the input terminal of the relay protection device.

[0047] Figure 4 It is a schematic diagram of the connection between the tentacle module of the present invention and the port of the relay protection tester.

[0048] Figure 5 It is a schematic diagram of the connection between the tentacle module and the electromagnetic lock port of the present invention.

[0049] In the attached figure: 1. control module; 2. trigger signal simulation module; 3. clock module; 4. multi-channel synchronous trigger module; 5. signal transmission module; 51. first transmission module; 52. second transmission module; 6. tentacle module; 7. master station; 8. slave station. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0051] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0052] Example 1

[0053] Please refer to Figure 1 , a relay protection debugging synchronous trigger device, comprising: a control module 1, a trigger signal simulation module 2, a clock module 3, a multi-channel synchronous trigger module 4, a signal transmission module 5, and a tentacle module 6;

[0054] The control module 1, the trigger signal simulation module 2, and the clock module 3 are arranged at the master station 7; the multi-channel synchronous trigger module 4 and the tentacle module 6 are arranged at the slave station 8, and the tentacle module 6 is connected to the terminals required to be connected during the relay protection commissioning; the signal transmission module 5 is used for communication between the master station 7 and the slave station 8; the signal transmission module 5 adopts Huawei 5G CPE Pro 2;

[0055] The trigger signal simulation module 2 is used to generate a trigger signal for testing and debugging; the trigger signal simulation module 2 adopts a Keysight 33500B series function / arbitrary waveform generator, model: 33509B.

[0056] The tentacle module 6 is used to receive the trigger signal sent by the trigger signal simulation module 2 and perform corresponding on / off actions;

[0057] The clock module 3 has an input end connected to the clock output port of the trigger signal simulation module 2, receives the PPS signal output from the trigger signal simulation module 2, and is used to synchronize its own clock with the clock of the trigger signal simulation module 2; the output end is connected to multiple input ports of the multi-channel synchronization trigger module 4 through the signal transmission module 5, and multiple output ends of the multi-channel synchronization trigger module 4 are connected to the trigger interface of the tentacle module 6, so as to make the trigger signal simulation module 2 and the tentacle module 6 have the same clock source; the clock module 3 adopts the Meinberg LANTIME M3000 clock synchronization device.

[0058] The multi-channel synchronous trigger module 4 is used to convert the trigger start / stop pulse signal sent by the clock module 3 into a contact signal, and control the on / off of the tentacle module 6 at the same time; the multi-channel synchronous trigger module 4 adopts Schneider ModiconM580 series PLC, model: BMEP582040;

[0059] The control module 1, the output end is connected to the input end of the trigger signal simulation module 2, which is used to control the output state of the trigger signal simulation module 2; the output end is connected to the input end of the clock module 3, which is used to control the clock module 3, and the pulse signal that triggers the start / stop is sent to the multi-channel synchronous trigger module 4 through the signal transmission module 5, and the pulse signal is converted into a contact signal through the multi-channel synchronous trigger module 4 to control the corresponding tentacle module 6 to be turned on / off; at the same time, the feedback signals of the trigger signal simulation module 2 and the tentacle module 6 are received and triggered, and the action time difference of each tentacle module 6 is calculated according to the feedback signal; the control module 1 adopts Siemens S7-1500 series PLC, model: 6ES7511-1AK02-0AB0.

[0060] The control module 1 sends a signal to each tentacle module 6 and the trigger signal simulation module 2 according to the start and stop triggers set in the trigger mode, and synchronously measures the corresponding time value of each tentacle module 6 at the connection / disconnection point through the clock module 3 and the multi-channel synchronous trigger module 4, and feeds back to the control module 1; at the same time, the corresponding time value of the trigger signal simulation module 2 at the start / stop point is measured and fed back to the control module 1.

[0061] The clock module 3 calibrates the clock of each node through periodic timestamp exchange to ensure synchronization accuracy. The trigger signal simulation module 2, the clock module 3, the multi-channel synchronous trigger module 4, the signal transmission module 5, and the tentacle module 6 are all equipped with a set of spares.

[0062] The tentacle module 6 controls the relay protection device input terminal connection / disconnection, the relay protection tester port connection / disconnection, and the air switch disconnection respectively;

[0063] Tentacle module 6 uses a relay to control the short circuit and disconnection between two independent pins of the connector to achieve the corresponding on / off action; please refer to Figure 3 When the relay protection device is used for synchronous opening and changing position, the two independent pins of the connector of the tentacle module 6 that controls the opening and closing of the relay protection device opening terminal are connected to the corresponding opening and closing terminals of the relay protection device that needs to be opened and changed during the relay protection debugging through connecting wires, and the opening and closing terminals of the relay protection device are connected to the corresponding interfaces of the relay protection device through connecting wires. The opening and changing position signal of the relay protection device is controlled by the tentacle module 6 to achieve the purpose of synchronous opening.

[0064] Please refer to Figure 4When used for the joint debugging of the longitudinal optical fiber differential protection function on both sides of the line protection device, the tentacle module 6 needs to be connected to the external open-in port of the relay tester debugged on both sides. The tentacle module 6 that controls the connection / disconnection of the relay tester port has two independent pins of its connector connected to a banana plug, and the two independent pins of the connector are connected to the external open-in port of the control relay tester through a connecting line with a banana plug; the output port of the relay tester is connected to the sampling terminal of the line protection device, and the sampling terminal of the line protection device is connected to the corresponding port of the line protection device. Setting the relay tester to the "open-in trigger" mode can control the relay tester to add fault quantities to the protection devices on both sides of the line at the same time to verify the coordination of the actions of the protection devices on both sides of the line.

[0065] Please refer to Figure 5 When used in the debugging of the standby automatic device or the load test, the tentacle module 6 that controls the on / off of the air switch has two independent pins of its connector connected to the electromagnetic lock input terminal through a connecting wire, and the bottom of the electromagnetic lock tongue is against the top of the air switch operating handle. The electromagnetic lock and the air switch are connected through a fixed frame. When the electromagnetic lock input terminal is connected, the electromagnetic lock tongue extends downward, and the electronic lock tongue presses down the air switch operating handle to disconnect the air switch. The air switch is synchronized on and off to meet the test conditions of disconnecting multiple air switches at different positions at the same time. The electronic lock adopts the LY-01 power-on locking model.

[0066] A single multi-channel synchronous trigger module 4 converts the pulse signal into a contact signal to control the connection / disconnection of multiple corresponding tentacle modules 6.

[0067] The relay protection debugging synchronous trigger device realizes efficient clock synchronization of the system through precise synchronization of the clock module 3 and the trigger signal simulation module 2, ensuring the precise triggering of the tentacle module 6 during debugging. Huawei 5G CPE Pro 2 is used for high-speed communication between the master station 7 and the slave station 8 to ensure the real-time and low-latency transmission of the signal and improve the overall response speed. Schneider Modicon M580 series PLC realizes multi-channel signal distribution and controls multiple tentacle modules 6 through a single multi-channel synchronous trigger module 4, providing high flexibility to meet the debugging needs of different scales. Each module of the device is equipped with a backup to ensure continuity and high reliability and reduce the risk of interruption caused by equipment failure. The control module 1 accurately manages and calculates the synchronous measurement of the action time difference of each tentacle module 6 to improve the accuracy and effectiveness of debugging. The integration of the multi-channel synchronous trigger module 4 and the trigger signal simulation module 2 simplifies the operation process, reduces manual intervention, and improves the debugging efficiency. Advanced clock synchronization technology and 5G communication means, combined with efficient signal modulation, significantly reduce interference and errors in the signal transmission process and improve the quality of signal transmission.

[0068] Example 2

[0069] Based on Example 1, please refer to Figure 1 This embodiment provides a signal transmission module 5 including a first transmission module 51 and a second transmission module 52. The first transmission module 51 is arranged at the master station 7, and the second transmission module 52 is arranged at the slave station 8; the signal transmission module 55G communication module and interface circuit are responsible for receiving and transmitting trigger signals. The 5G communication module adopts the TSN (Time-Sensitive Networking) protocol stack through a low-latency protocol stack.

[0070] The TSN protocol ensures the real-time and low-latency data transmission through technologies such as time synchronization, traffic scheduling, and reserved paths. It enables the trigger signal to be transmitted with extremely low latency, meeting the high-precision requirements of relay protection commissioning and achieving real-time signal transmission. Through signal modulation and demodulation and spectrum management, OFDM (Orthogonal Frequency Division Multiplexing) is adopted, and the signal is divided into multiple subcarriers. Each subcarrier is independently modulated and transmitted at an orthogonal frequency, reducing multipath interference and signal attenuation, reducing signal interference, and improving signal transmission quality.

[0071] Example 3

[0072] Based on Example 1, please refer to Figure 1 In this embodiment, the trigger signal simulation module 2 outputs a corresponding trigger signal according to the trigger mode output by the control module 1. The trigger mode includes three trigger modes: timing trigger, synchronous trigger and external signal trigger.

[0073] The timing trigger sets a specific trigger time through the control module 1. When the trigger time is reached, the trigger signal simulation module 2 sends a trigger signal, and the signal is sent to the multi-channel synchronous trigger module 4 through the signal transmission module 5. The multi-channel synchronous trigger module 4 converts the pulse signal into a contact signal to control the corresponding tentacle module 6 to be turned on / off. At the same time, the trigger signal simulation module 2 and the tentacle module 6 send feedback signals to the control module 1, and the control module 1 calculates the action time difference of each tentacle module 6 according to the feedback signal;

[0074] The synchronous trigger passes through the control module 1, controls the trigger signal simulation module 2 to send out a trigger signal, and sends the signal to the multi-channel synchronous trigger module 4 through the signal transmission module 5. The multi-channel synchronous trigger module 4 converts the pulse signal into a contact signal to control the corresponding tentacle module 6 to turn on / off. At the same time, the trigger signal simulation module 2 and the tentacle module 6 send feedback signals to the control module 1, and the control module 1 calculates the action time difference of each tentacle module 6 according to the feedback signal;

[0075] The external signal trigger receives the external trigger signal through the standardized signal interface of the control module 1, sends the trigger signal through the control trigger signal simulation module 2, and sends the signal to the multi-channel synchronous trigger module 4 through the signal transmission module 5. The multi-channel synchronous trigger module 4 converts the pulse signal into a contact signal to control the corresponding tentacle module 6 to be turned on / off. At the same time, the trigger signal simulation module 2 and the tentacle module 6 send the feedback signal to the control module 1, and the control module 1 calculates the action time difference of each tentacle module 6 according to the feedback signal; the clock module 3 performs time synchronization based on the IEEE 1588PTP protocol.

[0076] Example 4

[0077] Please refer to Figure 2 Based on embodiments 1-4, this embodiment provides a method for synchronously triggering relay protection debugging, including the following steps:

[0078] S1, connect the input of the tentacle module 6 in parallel to the multi-channel parallel output port of the multi-channel synchronous trigger module 4 of the above relay protection debugging synchronous trigger device;

[0079] S2, connecting the power lines of the tentacle modules 6, the trigger signal simulation module 2, the clock module 3, the signal transmission module 5 and the multi-channel synchronous trigger module 4;

[0080] S3, action time debugging;

[0081] S3.1, calculate the time difference;

[0082] The trigger mode used for calibration is called in the control module 1, and the trigger signal simulation module 2 is controlled to generate a corresponding trigger signal, and the signal is sent to the multi-channel synchronous trigger module 4 via the signal transmission module 5. The multi-channel synchronous trigger module 4 converts the pulse signal into a contact signal to control the corresponding tentacle module 6 to be turned on / off. At the same time, the trigger signal simulation module 2 and the tentacle module 6 send feedback signals to the control module 1, and the control module 1 calculates the action time difference of each tentacle module 6 according to the feedback signal;

[0083] S3.2, determine whether the time difference meets the requirements;

[0084] If the time difference is less than 3 seconds, connect the connector pin of the tentacle module 6 to the terminal that needs to be connected during relay protection debugging, and prepare to start the test;

[0085] If the time difference is greater than 3 seconds, the device will be self-checked, and the corresponding module whose delay exceeds the threshold will be switched to its standby module. Step S3.1 will be repeated to check the corresponding module whose delay exceeds the threshold at the same time until the time difference is less than 3 seconds. The connector pin of the tentacle module 6 is connected to the terminal that needs to be connected in the relay protection debugging, and the test is ready to start;

[0086] S4. According to the requirements of relay protection professional for device commissioning and transmission test, select the corresponding trigger mode and perform synchronous triggering of relay protection commissioning;

[0087] The control module 1 sends a signal to each tentacle module 6 and the trigger signal simulation module 2 according to the start and stop triggers set in the trigger mode, and synchronously measures the corresponding time value of each tentacle module 6 at the connection / disconnection point through the clock module 3 and the multi-channel synchronous trigger module 4, and feeds it back to the control module 1; at the same time, the corresponding time value of the trigger signal simulation module 2 at the start / stop point is measured and fed back to the control module 1;

[0088] If the time difference is greater than 3 seconds, the device will be self-checked, and the corresponding module with a delay exceeding the threshold will be switched to its standby module, and step S3.1 will be repeated to check the corresponding module with a delay exceeding the threshold until the time difference is less than 3 seconds. Through multi-channel parallel processing, efficient time difference calculation and automatic self-checking mechanism, efficient, accurate and stable synchronous triggering of relay protection commissioning is achieved, which significantly improves the commissioning efficiency and system reliability.

[0089] The above are only preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. The substitution may be a substitution of a part of the structure, device, method step, or a complete technical solution. The equivalent replacement or change according to the technical solution and the inventive concept of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A relay protection debugging synchronous triggering device, characterized in that: include: Control module, trigger signal simulation module, clock module, multi-channel synchronous trigger module, signal transmission module, tentacle module; The control module, trigger signal simulation module, and clock module are arranged at the master station; the multi-channel synchronous trigger module and the tentacle module are arranged at the slave station, and the tentacle module is connected to the terminals required to be connected during relay protection debugging; The signal transmission module is used for communication between the master station and the slave station; The trigger signal simulation module is used to generate a trigger signal for testing and debugging; The tentacle module is used to receive the trigger signal sent by the trigger signal simulation module and perform corresponding on / off actions; The clock module, whose input end is connected to the clock output port of the trigger signal simulation module, receives the pps signal output from the trigger signal simulation module and is used to synchronize its own clock with the clock of the trigger signal simulation module; The output end is connected to multiple input ports of the multi-channel synchronous trigger module through the signal transmission module, and multiple output ends of the multi-channel synchronous trigger module are connected to the trigger interface of the tentacle module, so as to make the trigger signal simulation module and the tentacle module be in the same clock source; The multi-channel synchronous trigger module is used to convert the trigger start / stop pulse signal sent by the clock module into a contact signal, and control the connection / disconnection of the tentacle module at the same time; The control module, whose output end is connected to the input end of the trigger signal simulation module, is used to control the output state of the trigger signal simulation module; the output end is connected to the input end of the clock module, and is used to control the clock module, and sends the pulse signal for triggering start / stop to the multi-channel synchronous trigger module through the signal transmission module, and converts the pulse signal into a contact signal to control the corresponding tentacle module to be turned on / off through the multi-channel synchronous trigger module; and simultaneously receives and triggers the feedback signals of the signal simulation module and the tentacle module, and calculates the action time difference of each tentacle module according to the feedback signals; The control module sends signals to each tentacle module and trigger signal simulation module according to the start and stop triggers set in the trigger mode, and synchronously measures the corresponding time value of each tentacle module at the connection / disconnection point through the clock module and the multi-channel synchronous trigger module, and feeds back to the control module; at the same time, measures the corresponding time value of the trigger signal simulation module at the start / stop point, and feeds back to the control module.

2. The relay protection debugging synchronous triggering device according to claim 1, characterized in that: The signal transmission module includes a first transmission module and a second transmission module, the first transmission module is arranged at the master station, and the second transmission module is arranged at the slave station; The signal transmission module 5G communication module and interface circuit are responsible for receiving and transmitting trigger signals. The 5G communication module realizes real-time transmission of signals through a low-latency protocol stack. The 5G communication module reduces communication delays through a low-latency protocol stack, reduces signal interference through signal modulation and demodulation and spectrum management, and improves signal transmission quality.

3. The relay protection debugging synchronous triggering device according to claim 1, characterized in that: The clock module calibrates the clock of each node through periodic timestamp exchange to ensure synchronization accuracy.

4. The relay protection debugging synchronous triggering device according to claim 1, characterized in that: The multi-channel synchronous trigger module realizes multi-channel signal distribution through a programmable logic controller.

5. The relay protection debugging synchronous triggering device according to claim 1, characterized in that: The trigger signal simulation module outputs a corresponding trigger signal according to the trigger mode output by the control module. The trigger mode includes three trigger modes: timing trigger, synchronous trigger and external signal trigger.

6. The relay protection debugging synchronous triggering device according to claim 5, characterized in that: The timing trigger sets a specific trigger time through the control module. When the trigger time is reached, the trigger signal simulation module sends a trigger signal, and the signal is sent to the multi-channel synchronous trigger module through the signal transmission module. The multi-channel synchronous trigger module converts the pulse signal into a contact signal to control the corresponding tentacle module to be turned on / off. At the same time, the trigger signal simulation module and the tentacle module send feedback signals to the control module, and the control module calculates the action time difference of each tentacle module according to the feedback signal; The synchronous trigger passes through the control module, controls the trigger signal simulation module to send out a trigger signal, and sends the signal to the multi-channel synchronous trigger module through the signal transmission module. The multi-channel synchronous trigger module converts the pulse signal into a contact signal to control the corresponding tentacle module to turn on / off. At the same time, the trigger signal simulation module and the tentacle module send feedback signals to the control module, and the control module calculates the action time difference of each tentacle module according to the feedback signal; The external signal trigger receives the external trigger signal through the standardized signal interface of the control module, sends the trigger signal through the control trigger signal simulation module, sends the signal to the multi-channel synchronous trigger module through the signal transmission module, and the multi-channel synchronous trigger module converts the pulse signal into a contact signal to control the corresponding tentacle module to be turned on / off. At the same time, the trigger signal simulation module and the tentacle module send feedback signals to the control module, and the control module calculates the action time difference of each tentacle module according to the feedback signal; the clock module performs time synchronization based on the IEEE 1588 PTP protocol.

7. The relay protection debugging synchronous triggering device according to claim 1, characterized in that: The trigger signal simulation module, clock module, multi-channel synchronous trigger module, signal transmission module and tentacle module are each provided with a set of spare parts.

8. The relay protection debugging synchronous triggering device according to claim 1, characterized in that: The tentacle modules respectively control the connection / disconnection of the input terminal of the relay protection device, the connection / disconnection of the port of the relay protection tester, and the disconnection of the air switch.

9. The relay protection debugging synchronous triggering device according to claim 8, characterized in that: The tentacle module uses a relay to control the short circuit and disconnection between two independent pins of the connector to realize the corresponding connection / disconnection action. The tentacle module that controls the connection / disconnection of the relay protection device input terminal has two independent pins of its connector connected to the relay protection device input terminal through a connecting wire; the tentacle module that controls the connection / disconnection of the relay protection tester port has two independent pins of its connector connected to a banana plug, and the two independent pins of the connector are connected to the control relay protection tester port through a connecting wire with a banana plug; the tentacle module that controls the connection / disconnection of the air switch has two independent pins of its connector connected to the electromagnetic lock input terminal through a connecting wire, and the bottom of the electromagnetic lock tongue is against the top of the air switch operating handle.

10. A relay protection debugging synchronous triggering method, using the relay protection debugging synchronous triggering device according to any one of claims 1 to 9, characterized in that: The steps include: S1, connecting the input of the tentacle module in parallel to the multi-channel parallel output port of the multi-channel synchronous trigger module of the above relay protection debugging synchronous trigger device; S2, connecting the power lines of the tentacle modules, the trigger signal simulation module, the clock module, the signal transmission module and the multi-channel synchronous trigger module; S3, action time debugging; S3.1, calculate the time difference; The trigger mode used for calibration is called in the control module, and the trigger signal simulation module is controlled to generate a corresponding trigger signal, and the signal is sent to the multi-channel synchronous trigger module through the signal transmission module. The multi-channel synchronous trigger module converts the pulse signal into a contact signal to control the corresponding tentacle module to be turned on / off. At the same time, the trigger signal simulation module and the tentacle module send feedback signals to the control module, and the control module calculates the action time difference of each tentacle module according to the feedback signal; S3.2, determine whether the time difference meets the requirements; If the time difference is less than 3 seconds, the tentacle module connector pin is connected to the terminal that needs to be connected in the relay protection debugging, and the test is ready to start; if the time difference is greater than 3 seconds, the device self-checks, and the corresponding module whose delay exceeds the threshold is switched to its standby module, and step S3.1 is repeated to check the corresponding module whose delay exceeds the threshold at the same time, until the time difference is less than 3 seconds, the tentacle module connector pin is connected to the terminal that needs to be connected in the relay protection debugging, and the test is ready to start; S4. According to the requirements of relay protection professional for device commissioning and transmission test, select the corresponding trigger mode and perform synchronous triggering of relay protection commissioning; The control module sends signals to each tentacle module and trigger signal simulation module according to the start and stop triggers set in the trigger mode, and synchronously measures the corresponding time values ​​of each tentacle module at the connection / disconnection point through the clock module and the multi-channel synchronous trigger module, and feeds back to the control module; at the same time, the corresponding time values ​​of the trigger signal simulation module at the start / stop point are measured and fed back to the control module; if the time difference is greater than 3 seconds, the device self-checks, and switches the corresponding module whose delay exceeds the threshold to its standby module, repeats step S3.1 and checks the corresponding modules whose delay exceeds the threshold at the same time until the time difference is less than 3 seconds.

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