Practical training method and system for simulating fusion terminal wiring

Abstract

The invention provides a practical training method and system for simulating fusion terminal wiring, and relates to the technical field of low-voltage power distribution Internet of Things, and the practical training device comprises a fusion terminal, a mounting plate, a simulation power source, a PLC device and an intelligent terminal device, the fusion terminal collects and obtains various signals through a terminal on the mounting plate, and the simulation power source is connected with the PLC device. The signal is transmitted to the intelligent terminal equipment through an RS485 wire and is uploaded to the fusion terminal wiring practical training background; the simulation power source establishes communication with the fusion terminal wiring practical training background in an Ethernet connection mode, and the fusion terminal wiring practical training background controls the simulation power source to start, stop and output voltage and current according to a signal analysis result so as to simulate a real environment of a low-voltage transformer area; and the PLC device accesses the fusion terminal wiring practical training background and the simulation power source through the switch by using different interfaces, and transmits the operation state of the simulation power source to the fusion terminal wiring practical training background.

Description

Technical Field

[0001] The present disclosure relates to the technical field of low-voltage power distribution Internet of Things, and in particular to a method and system for simulating fusion terminal wiring training. Background Art

[0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art.

[0003] As the core of the low-voltage power distribution Internet of Things, the intelligent fusion terminal in the substation (referred to as "fusion terminal") can meet the needs of high-performance concurrency, large-capacity storage, multiple collection objects, on-site analysis and decision-making, and collaborative computing. It has functions such as data collection, equipment operation status detection, and power metering, which strongly supports the needs of power distribution, marketing and emerging business development.

[0004] At present, the fusion terminal has demonstrated its full value and development prospects in low-voltage substation data collection, and has become an indispensable part of the transformation and upgrading of more and more substations. In order to fully realize the application of fusion terminals, it is necessary to open up the first step of fusion terminal application, that is, wiring installation. Operation and maintenance personnel need to fully master the basic principles, installation processes, communication knowledge and other professional skills of fusion terminals. This has high technical requirements for personnel engaged in related work, but the current fusion terminal wiring installation training is mostly theoretical guidance, and the training level in various places is uneven, and there is a lack of real-life fusion terminal wiring installation operation scenario simulation. Summary of the invention

[0005] In order to solve the above problems, the present invention proposes a method and system for simulating fusion terminal wiring training, which simulates a power outage in a low-voltage substation, installs a fusion terminal, installs a current transformer, connects the voltage / current incoming line of the fusion terminal, connects the external remote signal to the fusion terminal, and connects the smart terminal device to the fusion terminal via RS485 communication. The system also makes an intelligent judgment on the correctness of the trainees' wiring installation, which greatly meets the needs of fusion terminal project construction and operation and maintenance personnel skill training, and provides on-site operation and maintenance personnel with a real and safe application scenario for fusion terminal installation training and learning.

[0006] According to some embodiments, the present disclosure adopts the following technical solutions:

[0007] A training system for simulating fusion terminal wiring, including a fusion terminal wiring training device and a fusion terminal wiring training background, wherein the fusion terminal wiring training device includes a fusion terminal and a mounting plate, a simulation power source, a PLC device and an intelligent terminal device, wherein the fusion terminal collects and obtains various signals through terminals on the mounting plate, and transmits the signals to the intelligent terminal device through an RS485 line, and uploads the signals to the fusion terminal wiring training background;

[0008] The simulated power source establishes communication with the fusion terminal wiring training background through Ethernet connection. The fusion terminal wiring training background controls the start, stop and output voltage and current of the simulated power source according to the signal analysis results to simulate the real environment of the low-voltage substation; the PLC device uses different interfaces to access the fusion terminal wiring training background and the simulated power source through the switch, and transmits the operating status of the simulated power source to the fusion terminal wiring training background.

[0009] According to some embodiments, the present disclosure adopts the following technical solutions:

[0010] A method for simulating a fusion terminal wiring training system, comprising:

[0011] Obtain the cut-off signal of the fuse switch, complete the power-off operation and enter the wiring training stage;

[0012] Realize the installation and debugging of each device in the system, and upload each installation operation status to the fusion terminal wiring training background;

[0013] The fusion terminal wiring training background judges the operation process and determines whether the intelligent terminal device and the fusion terminal communicate successfully. The fusion terminal wiring training background is used to check whether the installation and wiring operations are correct.

[0014] According to some embodiments, the present disclosure adopts the following technical solutions:

[0015] A computer program product includes a computer program. When the computer program is executed by a processor, the method for simulating a fusion terminal wiring training system is implemented.

[0016] According to some embodiments, the present disclosure adopts the following technical solutions:

[0017] A non-transitory computer-readable storage medium is used to store computer instructions. When the computer instructions are executed by a processor, a method for simulating a fusion terminal wiring training system is implemented.

[0018] According to some embodiments, the present disclosure adopts the following technical solutions:

[0019] An electronic device comprises: a processor, a memory and a computer program; wherein the processor is connected to the memory, the computer program is stored in the memory, and when the electronic device is running, the processor executes the computer program stored in the memory so that the electronic device executes a method for simulating a fusion terminal wiring training system.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The disclosed training system for simulating fusion terminal wiring simulates a power outage in a low-voltage area, installs a fusion terminal, installs a current transformer, connects the voltage / current incoming line of the fusion terminal, connects the external telesignal signal to the fusion terminal, and connects the intelligent terminal equipment, such as reactive power compensation controller, temperature and humidity controller, and transformer oil temperature display, to the fusion terminal via RS485 communication. After the wiring is completed, the correctness of the trainee's wiring installation is intelligently judged, which greatly meets the needs of fusion terminal project construction and operation and maintenance personnel skill training, and provides a real, safe, and complete fusion terminal installation training and learning application scenario for on-site operation and maintenance personnel.

[0022] The disclosed training system for simulating fusion terminal wiring is designed according to the actual installation environment of the low-voltage substation on site, and contains fusion terminals, intelligent terminal equipment, etc. The trainees can not only understand the hardware equipment of the fusion terminals in the low-voltage substation on site, but also simulate the site to repeatedly practice the installation of fusion terminals and related wiring. At the same time, the fusion terminal wiring training background is used to make intelligent judgments on the correctness of the installation and wiring operations, thereby improving the trainees' hands-on installation ability.

[0023] The present invention discloses a training system for simulating converged terminal wiring. The training system truly simulates the on-site installation environment, and can repeatedly practice converged terminal installation and access. At the same time, it can meet the automatic inspection of converged terminal installation correctness, train trainees' hands-on ability, and promote the installation and wiring of intelligent converged terminal devices as well as the standardization and regularization of wiring processes. It solves the problem that traditional training methods focus on theoretical knowledge and lack on-site practice, and realizes the rapid training of operation and maintenance personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings constituting a part of the present disclosure are used to provide a further understanding of the present disclosure. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation on the present disclosure.

[0025] Figure 1 This is a network architecture diagram of a fusion terminal wiring training system according to an embodiment of the present disclosure;

[0026] Figure 2 is a flow chart of installation and use of the fusion terminal installation board of the embodiment of the present disclosure;

[0027] Figure 3 is a flow chart of current transformer installation and installation direction detection according to an embodiment of the present disclosure;

[0028] Figure 4 is a fusion terminal voltage and current wiring flow chart of an embodiment of the present disclosure;

[0029] Figure 5 It is a flow chart of the integrated terminal input signal and intelligent terminal device communication wiring according to the embodiment of the present disclosure;

[0030] Figure 6 This is a flow chart of power-on debugging of the converged terminal according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0031] The present disclosure is further described below in conjunction with the accompanying drawings and embodiments.

[0032] It should be noted that the following detailed descriptions are all illustrative and are intended to provide further explanation of the present disclosure. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present disclosure belongs.

[0033] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present disclosure. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0034] Example 1

[0035] In one embodiment of the present disclosure, a training system for simulating fusion terminal wiring is provided, including a fusion terminal wiring training device and a fusion terminal wiring training background. The fusion terminal wiring training device includes a fusion terminal and a mounting plate, a simulation power source, a PLC device, and an intelligent terminal device. The fusion terminal acquires various signals through terminals on the mounting plate, and transmits the signals to the intelligent terminal device through an RS485 line, and uploads them to the fusion terminal wiring training background.

[0036] The simulated power source establishes communication with the fusion terminal wiring training background through Ethernet connection. The fusion terminal wiring training background controls the start, stop and output voltage and current of the simulated power source according to the signal analysis results to simulate the real environment of the low-voltage substation; the PLC device uses different interfaces to access the fusion terminal wiring training background and the simulated power source through the switch, and transmits the operating status of the simulated power source to the fusion terminal wiring training background.

[0037] Furthermore, the integrated terminal wiring training device also includes current transformers, Hall proximity switches, micro switches, hand-tightened nuts and bolts, portable PCs, network switches, push button switches, LED lights, etc.; the intelligent terminal equipment includes reactive power compensation controllers, temperature and humidity controllers, and transformer oil temperature displays.

[0038] Among them, the fusion terminal collects electrical quantities such as voltage, current, phase angle, harmonics, and frequency, which can be used for display and can also be used to power on the fusion terminal after wiring is completed. In the training background, data can be read to determine whether all wiring is successful; external telesignaling signals and temperature signals can be collected through the input terminals and PT100 temperature measurement terminals of the fusion terminal body. At the same time, the fusion terminal is installed with micro-application APPs for multiple smart terminal devices. When the fusion terminal and the smart terminal device are connected through the RS485 line and the communication connection is successful, the fusion terminal can upload the collected data to the fusion terminal wiring training background.

[0039] The simulated power source establishes a communication connection with the integrated terminal wiring training background through Ethernet connection. The integrated terminal wiring training background can control the start, stop, and output voltage and current of the simulated power source to simulate the real environment of the low-voltage area. The simulated power source supports voltage loop short circuit alarm, current loop open circuit alarm, and supports automatic shutdown of output.

[0040] The PLC device includes 1 RJ45 interface and 1 RS485 interface, 16 DC24V digital input interfaces, 8 DC24V or AC220V digital output interfaces, and 4 analog input interfaces. Among them, the RJ45 interface is connected to the fusion terminal wiring training background through a switch, the RS485 interface is connected to the simulated power source, the DC24V digital input interface is connected to the platform start and stop buttons, the knife fuse switch closing signal, the Hall proximity switch direction signal, etc., and the DC24V or AC220V digital output interface is connected to various signal indicators on the platform.

[0041] Furthermore, the current transformer is used to convert the primary current of the busbar into secondary current for collection by the fusion terminal, and is installed by fixing it on the copper plate with screws.

[0042] The Hall proximity switch consists of a switch body and a round patch magnet. The switch body is installed at a suitable position on the panel and fixed by punching. The Hall proximity switch uses a PNP type three-wire. When the round patch magnet approaches, the black line outputs a positive voltage signal. In actual applications, the magnet sheet is fixed to a corner of the bottom of the CT to be installed with glue. When the CT is correctly installed, the magnet at this corner fits with the Hall proximity switch on the panel. When the effective fitting distance is controlled within 10mm, the proximity switch operates to output a signal. This corner is used to detect whether the installation direction of the CT is correct. The proximity switch action output signal is collected by the PLC device. After the PLC device collects the signal, the training background can read the signal to determine whether the installation direction of the CT is correct.

[0043] The micro switch includes 1 normally open contact and 1 normally closed contact. The fixing method is to punch holes in the panel and fix with screws. The micro switch is used to detect whether the fusion terminal mounting plate is installed in place.

[0044] The hand nuts and bolts are made of 304 stainless steel, with a thread diameter of M6 and a length of 10mm. The hand nuts and bolts are used to install the current transformer, which is convenient for disassembly and assembly.

[0045] The network switch is connected to the communication equipment in the fusion terminal installation cabinet, and is also connected to the fusion terminal wiring training background to complete the communication interaction between the background and the cabinet.

[0046] The key switch is installed under the cabinet panel, including four keys: start, end, start, and stop. It is connected to the PLC device and transmits the operating status to the fusion terminal wiring training background through the network switch.

[0047] LED lights are installed above the cabinet panel, including lights of different colors for power, operation, abnormality, and fault. The fusion terminal wiring training background triggers the corresponding LED lights according to the cabinet operation status.

[0048] As an embodiment, the fusion terminal wiring training device mainly includes a wireless router, a network switch, a fusion terminal, an intelligent terminal device, a PLC device, etc. Among them, the fusion terminal wiring training device can simultaneously access two workstations by wireless means, and communicate with the fusion terminal, the PLC device and the simulation power source of the corresponding workstations respectively, so as to realize the relevant functional requirements of the fusion terminal wiring training of this system.

[0049] Example 2

[0050] In one embodiment of the present disclosure, a method for simulating a fusion terminal wiring training system is provided, comprising:

[0051] Obtain the cut-off signal of the fuse switch, complete the power-off operation and enter the wiring training stage;

[0052] Realize the installation and debugging of each device in the system, and upload each installation operation status to the fusion terminal wiring training background;

[0053] The fusion terminal wiring training background judges the operation process and determines whether the intelligent terminal device and the fusion terminal communicate successfully. The fusion terminal wiring training background is used to check whether the installation and wiring operations are correct.

[0054] As an embodiment, the specific implementation method of installing and using the fusion terminal installation plate is as follows:

[0055] like Figure 2As shown, the trainee pulls the knife fuse switch to obtain the cut-off signal of the knife fuse switch. After completing the power-off operation, the fusion terminal installation stage can be entered. The installation plate with the fusion terminal can be directly installed in the corresponding position of the platform body and fixed with screws. The travel micro switch has been installed at the installation position. When the installation plate is installed in place, the travel switch is closed. The signal is collected by the PLC device to determine whether the installation plate is installed in place. The installation results are displayed in the background of the fusion terminal wiring training, which can be viewed.

[0056] As an embodiment, the specific implementation method of the current transformer installation and installation direction detection is as follows:

[0057] like Figure 3 As shown, pull open the knife fuse switch, obtain the cut-off signal of the knife fuse switch, and after completing the power-off operation, enter the current transformer installation stage. Fix the current transformer on the copper bus by hand-tightening the butterfly bolt. After the installation is completed, the Hall proximity switch can be used to detect whether the installation direction of the current transformer is correct. The output signal is collected by the PLC device and sent to the background. The installation results are displayed in the background of the fusion terminal wiring training, which can be viewed.

[0058] As an embodiment, the specific implementation of the fusion terminal voltage and current wiring is as follows:

[0059] like Figure 4 As shown, pull open the knife fuse switch, obtain the cut-off signal of pulling open the knife fuse switch, and after completing the power-off operation, enter the voltage and current wiring stage. The four voltage lines (ABCN) can be screwed and led out at the copper bar at the bottom of the knife fuse, and connected to the corresponding 3P circuit breaker and wiring terminals on the fusion terminal installation board in the correct phase sequence. Students can install the current transformer on the busbar and cable and fix it firmly. The primary current flows from P1 to P2, and the secondary current of the same phase should flow from S1 to the external circuit, and then flow into the winding from S2. Correctly connect the secondary line of the current transformer to the corresponding current terminal on the fusion terminal installation board.

[0060] As an embodiment, the specific implementation method of integrating terminal input signal wiring and intelligent terminal device communication is as follows:

[0061] like Figure 5 As shown, connect the corresponding input signal on the panel to the corresponding remote signal terminal on the fusion terminal installation board. The input signal separation and combination are manually replaced by a toggle switch. Connect the corresponding remote signal terminals on the installation board in sequence according to the remote signal name. The RS485 communication interface of the intelligent terminal device is connected to the corresponding communication terminal block on the installation board in sequence through a twisted pair shielded cable.

[0062] As an embodiment, the specific implementation of the integrated terminal power-on debugging process is as follows:

[0063] like Figure 6As shown, after the installation and wiring are completed, the local communication module, remote communication module, 4G+Beidou antenna, etc. are installed. After checking that everything is correct, push the knife fuse switch to complete the power supply operation. Close the 3P switch on the fusion terminal installation panel, the fusion terminal is powered, and the host computer system reads the fusion terminal voltage data. When the host computer system reads the fusion terminal voltage data, the source output current is synchronously controlled. At this time, the secondary side current of the CT collected by the fusion terminal is uploaded to the host computer system. The host computer system determines whether the secondary cable wiring is correct by the phase sequence, angle, polarity, etc. of the voltage and current, and determines whether the intelligent terminal device and the fusion terminal communicate successfully.

[0064] Example 3

[0065] In one embodiment of the present disclosure, a computer program product is provided, including a computer program. When the computer program is executed by a processor, the method for simulating a converged terminal wiring training system is implemented.

[0066] Example 4

[0067] In one embodiment of the present disclosure, a non-transitory computer-readable storage medium is provided, wherein the non-transitory computer-readable storage medium is used to store computer instructions. When the computer instructions are executed by a processor, a method for simulating a converged terminal wiring training system is implemented.

[0068] Example 5

[0069] In one embodiment of the present disclosure, an electronic device is provided, including: a processor, a memory, and a computer program; wherein the processor is connected to the memory, the computer program is stored in the memory, and when the electronic device is running, the processor executes the computer program stored in the memory, so that the electronic device executes a method for simulating a converged terminal wiring training system.

[0070] The present disclosure is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present disclosure. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0071] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process in the computer or other programmable device. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0072] Although the above describes the specific implementation methods of the present disclosure in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present disclosure. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present disclosure, various modifications or variations that can be made by those skilled in the art without creative work are still within the scope of protection of the present disclosure.

Claims

1. A training system for simulating fusion terminal wiring, characterized in that: It includes a fusion terminal wiring training device and a fusion terminal wiring training background. The fusion terminal wiring training device includes a fusion terminal and a mounting plate, a simulation power source, a PLC device and an intelligent terminal device. The fusion terminal collects and obtains various signals through the terminals on the mounting plate, and transmits the signals to the intelligent terminal device through the RS485 line, and uploads them to the fusion terminal wiring training background; The simulated power source establishes communication with the fusion terminal wiring training background through Ethernet connection. The fusion terminal wiring training background controls the start, stop and output voltage and current of the simulated power source according to the signal analysis results to simulate the real environment of the low-voltage substation; the PLC device uses different interfaces to access the fusion terminal wiring training background and the simulated power source through the switch, and transmits the operating status of the simulated power source to the fusion terminal wiring training background.

2. A training system for simulating fusion terminal wiring as claimed in claim 1, characterized in that: It also includes current transformers, Hall proximity switches, micro switches, hand-tightened nuts and bolts, portable PCs, network switches, pushbutton switches and LED lights.

3. A training system for simulating fusion terminal wiring as claimed in claim 1, characterized in that: The intelligent terminal device includes a reactive power compensation controller, a temperature and humidity controller, and a transformer oil temperature display.

4. A training system for simulating fusion terminal wiring as claimed in claim 1, characterized in that: The fusion terminal collects and acquires various signals through the terminals on the mounting plate, including: the fusion terminal collects multiple electrical quantities such as voltage, current, phase angle, harmonics and frequency, and collects external telesignaling signals and temperature signals through the input terminals and PT100 temperature measurement terminals of the fusion terminal. The fusion terminal and the intelligent terminal device are connected through an RS485 line, and after the communication connection is successful, the fusion terminal uploads the collected data to the fusion terminal wiring training background.

5. A training system for simulating fusion terminal wiring as claimed in claim 1, characterized in that: The simulated power source supports voltage loop short-circuit alarm, current loop open-circuit alarm, and supports automatic shutdown output. The PLC device includes 1 RJ45 interface and 1 RS485 interface, 16 DC24V digital input interfaces, 8 DC24V or AC220V digital output interfaces, and 4 analog input interfaces; among them, the RJ45 interface is connected to the fusion terminal wiring training background through a switch, the RS485 interface is connected to the simulated power source, the DC24V digital input interface is connected to the platform start and stop buttons, the knife fuse switch closing signal, and the Hall proximity switch direction signal, and the DC24V or AC220V digital output interface is connected to various signal indicator lights on the platform.

6. A training system for simulating fusion terminal wiring as claimed in claim 2, characterized in that: The current transformer is used to convert the primary current of the busbar into secondary current for collection by the fusion terminal, and is installed by fixing it on the copper plate with screws.

7. A method for simulating a fusion terminal wiring training system according to any one of claims 1 to 6, characterized in that: Obtain the cut-off signal of the fuse switch, complete the power-off operation and enter the wiring training stage; Realize the installation and debugging of each device in the system, and upload each installation operation status to the fusion terminal wiring training background; The fusion terminal wiring training background judges the operation process and determines whether the intelligent terminal device and the fusion terminal communicate successfully. The fusion terminal wiring training background is used to check whether the installation and wiring operations are correct.

8. A computer program product, comprising a computer program, characterized in that When the computer program is executed by the processor, the method for simulating a fusion terminal wiring training system as described in claim 7 is implemented.

9. A non-transitory computer-readable storage medium, characterized in that: The non-transitory computer-readable storage medium is used to store computer instructions. When the computer instructions are executed by the processor, the method for simulating a converged terminal wiring training system as described in claim 7 is implemented.

10. An electronic device, characterized in that: include: A processor, a memory and a computer program; wherein the processor is connected to the memory, the computer program is stored in the memory, and when the electronic device is running, the processor executes the computer program stored in the memory to enable the electronic device to implement a method for simulating a converged terminal wiring training system as described in claim 7.

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