Digital high-voltage cabinet circuit

Abstract

The utility model relates to the technical field of high-voltage cabinets, and discloses a digital high-voltage cabinet circuit which comprises five circuit groups, and each circuit group comprises a Core board module, an IO board module, a Key board module and an EH board module. Each circuit group is in signal connection with a PLC (Programmable Logic Controller); and the PLC is in signal connection with a PC (Personal Computer). According to the digital high-voltage cabinet circuit, only Key plate modules in branch circuits in each circuit group are different, different Key plates and peripheral circuits of the Key plates are mounted in the Key slots although the same IO plate is adopted for different cabinet bodies mounted in a whole set of high-voltage devices, so that the position of the current cabinet body in the whole system is identified, and the current trend of the system is controlled; therefore, the circuit structure of the digital high-voltage cabinet circuit is simplified, and convenience is provided for maintenance.

Description

Technical Field

[0001] The present application relates to the technical field of high-voltage cabinets, and in particular to a digital high-voltage cabinet circuit. Background Art

[0002] High-voltage switchgear is essential power distribution equipment for power transmission and distribution, as well as industrial and mining operations. Its primary function is to disconnect high-voltage circuits, ensuring safe power use. Existing high-voltage switchgear has complex circuit structures, making it difficult to quickly identify the faulty location or component when a fault occurs, leading to inefficient maintenance and repair. Utility Model Content

[0003] The purpose of this application is to provide a digital high-voltage cabinet circuit to solve the technical problems raised in the above background technology.

[0004] To achieve the above objectives, the present application discloses the following technical solutions: a digital high-voltage cabinet circuit, comprising five circuit groups, each of which comprises a Core board module, an IO board module, a Key board module and an EH board module;

[0005] The Core board module is provided with a two-port switch for cascading, the Core board modules in adjacent circuit groups are connected in sequence, and the Core board modules in adjacent circuit groups are connected to the IO board modules in a one-to-one correspondence;

[0006] The IO board modules in adjacent circuit groups are connected in sequence, and each IO board module is provided with 16 optocoupler input branches and 24 output branches. The IO boards in adjacent circuit groups are connected to the Key board modules in a one-to-one correspondence;

[0007] The Key board module is used to control the current direction and interlocking, and the Key board module in the circuit group is connected to the EH board module;

[0008] The EH board module is used to drive the stepper motor to push and pull the high-voltage switch to a specified position;

[0009] Each of the circuit groups is connected to a PLC signal, and the PLC is connected to a PC signal.

[0010] Preferably, the 24 output branches include 10 relay-type output circuits and 14 transistor-type output circuits.

[0011] Preferably, the 10-way relay-type output circuit and the 14-way transistor-type output circuit are connected via a serial-input-parallel-output signal processing circuit.

[0012] Preferably, the 16 optocoupler input branches are connected via a parallel-input and serial-output circuit.

[0013] Preferably, the Key board modules corresponding to each of the circuit groups include a first Key board circuit, a second Key board circuit, a third Key board circuit, a fourth Key board circuit and a fifth Key board circuit; wherein:

[0014] The first key board circuit includes a first key card socket, wherein pins 1, 3, and 4 of the first key card socket are connected, and pins 2, 5, and 6 of the first key card socket are connected;

[0015] The second key board circuit includes a second key card socket, wherein pins 2, 3, and 4 of the second key card socket are connected, pins 5 and 8 of the second key card socket are connected, and pins 6 and 9 of the second key card socket are connected;

[0016] The third key board circuit includes a third key card socket, wherein pin 2 of the third key card socket is connected to pin 3, and pin 4 of the third key card socket is connected to pin 10;

[0017] The fourth key board circuit includes a fourth key card socket, wherein pins 1, 3, and 4 of the fourth key card socket are connected, and pins 5, 6, and 10 of the fourth key card socket are connected;

[0018] The fifth key board circuit includes a fifth key card socket, wherein pins 3, 4 and 10 of the fifth key card socket are connected, pins 5 and 11 of the fifth key card socket are connected, and pins 6 and 12 of the fifth key card socket are connected.

[0019] Preferably, the specifications of the first key card socket, the second key card socket, the third key card socket, the fourth key card socket and the fifth key card socket are all 805_3.96_2*6.

[0020] Preferably, the Core board module includes a core control chip, a network chip and a switch chip;

[0021] The core control chip is connected to the switch chip through the network chip, and is used to parse network communication data and control corresponding outputs, as well as broadcast the read input status to the network;

[0022] The network chip is connected to the core control chip via an SPI interface;

[0023] The switch chip is connected to the network chip, and the switch chip is connected to the IO board module through a connection terminal.

[0024] As preferred, the IO board module further comprises an IO board level conversion circuit for converting the input 24V voltage into 5V and 3.3V output.

[0025] As preferred, the EH board module comprises an EH board level conversion circuit, a drive control chip, a motor drive chip, a current regulation circuit, a chip power supply circuit, and an optoelectronic isolation input circuit.

[0026] The EH board level conversion circuit is connected with the drive control chip, the motor drive chip, the current regulation circuit, the chip power supply circuit, and the optoelectronic isolation input circuit, and is used for stabilizing voltage and outputting 5V and 3.3V voltage.

[0027] The drive control chip is connected with the drive control chip, the motor drive chip, the current regulation circuit, the chip power supply circuit, and the optoelectronic isolation input circuit, and is used for receiving input signals and formulating working positions, and generating pulse signals.

[0028] The motor drive chip is used for receiving the pulse signals generated by the drive control chip.

[0029] The optoelectronic isolation input circuit is connected with the IO board module.

[0030] Beneficial effects: the digital high-voltage cabinet circuit of the present application is composed of five circuit groups, only the Key board module is different in the branch circuits in each circuit group, for the cabinets installed in the whole high-voltage device, although the same IO board is used, different Key boards and their peripheral circuits are installed in the Key slots, which are used for identifying the position of the current cabinet in the whole system, controlling the current direction of the system, and realizing the interlocking relationship, thus simplifying the circuit structure of the digital high-voltage cabinet circuit, and providing convenience for maintenance and repair. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0032] Figure 1 The system block diagram of the digital high-voltage cabinet circuit provided by the embodiments of the present application;

[0033] Figure 2 The schematic diagram of the core control chip and its peripheral circuit provided by the embodiments of the present application;

[0034] Figure 3A schematic diagram of a network chip and its peripheral circuits provided in an embodiment of the present application;

[0035] Figure 4 A schematic diagram of a switch chip and its peripheral circuits provided in an embodiment of the present application;

[0036] Figure 5 A circuit diagram of the connection terminal provided in an embodiment of the present application;

[0037] Figure 6 A circuit diagram of 16 optocoupler input branches provided in an embodiment of the present application;

[0038] Figure 7 A circuit diagram of a serial-input and serial-output circuit provided in an embodiment of the present application;

[0039] Figure 8 A circuit diagram of the first part of the 24-way output branch provided in an embodiment of the present application;

[0040] Figure 9 A circuit diagram of the second part of the 24-way output branch provided in an embodiment of the present application;

[0041] Figure 10 A circuit diagram of the third part of the 24-way output branch provided in an embodiment of the present application;

[0042] Figure 11 A circuit diagram of a serial-input and parallel-output signal processing circuit provided in an embodiment of the present application;

[0043] Figure 12 A circuit diagram of an IO board level conversion circuit provided in an embodiment of the present application;

[0044] Figure 13 A circuit diagram of the first Key board circuit provided in an embodiment of the present application;

[0045] Figure 14 A circuit diagram of the second Key board circuit provided in an embodiment of the present application;

[0046] Figure 15 A circuit diagram of the third Key board circuit provided in an embodiment of the present application;

[0047] Figure 16 A circuit diagram of the fourth Key board circuit provided in an embodiment of the present application;

[0048] Figure 17 A circuit diagram of the fifth Key board circuit provided in an embodiment of the present application;

[0049] Figure 18 A circuit diagram of an EH board level conversion circuit provided in an embodiment of the present application;

[0050] Figure 19 A schematic diagram of a driver control chip and its peripheral circuits provided in an embodiment of the present application;

[0051] Figure 20 A schematic diagram of a motor driver chip and its peripheral circuits provided in an embodiment of the present application;

[0052] Figure 21 A schematic diagram of a current regulating circuit provided in an embodiment of the present application;

[0053] Figure 22 A schematic diagram of a chip power supply circuit provided in an embodiment of the present application;

[0054] Figure 23 A schematic diagram of the optoelectronic isolation input circuit provided in an embodiment of the present application. DETAILED DESCRIPTION

[0055] The following is a clear and complete description of the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0056] In this document, the term "comprising" is intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0057] like Figure 1 The digital high-voltage cabinet circuit shown includes five circuit groups, each of which includes a Core board module, an IO board module, a Key board module, and an EH board module. In this embodiment, each circuit group is connected to a PLC signal, and the PLC is connected to a PC signal.

[0058] The core board module is equipped with a two-port switch for cascading. The core board modules in adjacent circuit groups are connected in sequence, and the core board modules in adjacent circuit groups are connected to the IO board modules one-to-one. Specifically, the core board module includes a core control chip, a network chip, and a switch chip.

[0059] like Figure 2As shown, the core control chip is connected to the switch chip through the network chip, which is used to parse network communication data and control the corresponding output, as well as broadcast the read input status to the network. Figure 3 In the figure, pin 1 of the core control chip is connected to a photodiode D3 through a resistor R11. Through the setting of the photodiode D3, an indicator light can be used to indicate the network protocol connection status, thereby intuitively expressing whether the network protocol connection is normal or not.

[0060] like Figure 3 As shown, the network chip is connected to the core control chip through the SPI interface. The network chip mainly converts the network signal through this chip into the SPI interface and connects it to the main control chip.

[0061] like Figure 4 As shown, the switch chip is connected to the network chip, and the switch chip is connected to the IO board module through the wiring terminal. The switch chip is connected to the network chip internally, and the external two-way network is connected to the IO board through the wiring terminal. Figure 5 In the design of the photodiode D1, the indicator light indication effect of the internal network connection status and the indicator light driving indication effect of controlling the external network port are realized, which can intuitively express the location of the relevant fault point.

[0062] like Figure 5 As shown, the connection terminals are connected to the IO board through pin and female headers. Figure 6 Connect the connection terminal CN1 in the two RJ45 ports with lights. Figure 6 The connection terminal CN2 in is used for the IO board module.

[0063] Replay Figure 1 The IO board modules in adjacent circuit groups are connected in sequence, and each IO board module is provided with 16 optocoupler input branches and 24 output branches. The IO boards in adjacent circuit groups are connected to the Key board modules in a one-to-one correspondence.

[0064] Specifically, such as Figure 6 The 16 optocoupler input branches shown are connected as follows Figure 7 The parallel-input and serial-output circuits shown are connected.

[0065] 24 output branches such as Figure 8-10 As shown, the 24-way output branch includes 10-way relay type output circuits and 14-way transistor type output circuits, and the 10-way relay type output circuits and the 14-way transistor type output circuits are connected as shown in FIG. Figure 11 The serial-in and parallel-out signal processing circuits shown are connected.

[0066] The IO board module also includes an IO board level conversion circuit for converting the input 24V voltage into 5V and 3.3V output. The circuit structure of the IO board level conversion circuit is as follows: Figure 12 shown.

[0067] In this embodiment, the Key board module is used to control the current direction and interlocking. The Key board module in the circuit group is connected to the EH board module. The Key board module corresponding to each circuit group includes a first Key board circuit, a second Key board circuit, a third Key board circuit, a fourth Key board circuit, and a fifth Key board circuit.

[0068] like Figure 13 As shown, the first Key board circuit includes a first Key card socket, pins 1, 3 and 4 of the first Key card socket are connected, and pins 2, 5 and 6 of the first Key card socket are connected.

[0069] like Figure 14 As shown, the second key board circuit includes a second key card socket, pins 2, 3 and 4 of the second key card socket are connected, pins 5 and 8 of the second key card socket are connected, and pins 6 and 9 of the second key card socket are connected.

[0070] like Figure 15 As shown, the third key board circuit includes a third key card socket, pin 2 of the third key card socket is connected to pin 3, and pin 4 of the third key card socket is connected to pin 10.

[0071] like Figure 16 As shown, the fourth key board circuit includes a fourth key card socket, pins 1, 3 and 4 of the fourth key card socket are connected, and pins 5, 6 and 10 of the fourth key card socket are connected.

[0072] like Figure 17 As shown, the fifth key board circuit includes a fifth key card socket, pins 3, 4 and 10 of the fifth key card socket are connected, pins 5 and 11 of the fifth key card socket are connected, and pins 6 and 12 of the fifth key card socket are connected.

[0073] Among them, the specifications of the first key card socket, the second key card socket, the third key card socket, the fourth key card socket and the fifth key card socket are all 805_3.96_2*6.

[0074] 5 key card holders. For different cabinets installed in the entire high-voltage device, although the same IO board is used, different key card holders are installed in the key slots to identify the position of the current cabinet in the entire system, control the system current direction, and interlocking relationship.

[0075] In this embodiment, the EH board module is used to drive the stepper motor to push and pull the high-voltage switch to a specified position. The EH board module includes an EH board level conversion circuit, a drive control chip, a motor drive chip, a current regulation circuit, a chip power supply circuit, and an optoelectronic isolation input circuit.

[0076] The circuit structure of the EH board level conversion circuit is as follows Figure 18 As shown, the EH board level conversion circuit is connected to the drive control chip, motor drive chip, current regulation circuit, chip power supply circuit and optoelectronic isolation input circuit to stabilize the voltage and output 5V and 3.3V voltages.

[0077] Driver control chip and its peripheral circuits such as Figure 19 As shown, the drive control chip is connected to the drive control chip, motor drive chip, current regulation circuit, chip power supply circuit, and optoelectronic isolation input circuit, and is used to receive input signals and set working positions or test positions, and the control chip generates set pulse signals with acceleration and deceleration.

[0078] Motor driver chip and its peripheral circuits such as Figure 20 As shown, the motor driver chip receives the pulse signals generated by the driver control chip. The peripheral circuits of the motor driver chip include three optoelectronic isolation circuits, one of which is a high-speed signal for receiving pulses; the other two are direction and enable, with the frequency division coefficient set by a three-position DIP switch.

[0079] The circuit structure of the current regulation circuit is as follows Figure 21 As shown, the circuit structure of the chip power supply circuit is as follows Figure 22 shown.

[0080] The circuit structure of the optoelectronic isolation input circuit is as follows Figure 23 As shown, the photoelectric isolation input circuit is a two-way photoelectric isolation input circuit, which is connected to the IO board module through wiring. It is used to receive the position according to the task and output a normally open and normally closed relay. It is used to feedback a signal to the host when an error occurs in the execution of the action of this drive.

[0081] It should be noted that the circuit composition, specific connection relationship, and specifications of the relevant electronic components used in the circuit corresponding to the Core board module, IO board module, Key board module and EH board module in this embodiment can be referred to in the corresponding drawings, and this text will not go into details here.

[0082] Finally, it should be noted that the above is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A digital high-voltage cabinet circuit, characterized in that: It includes five circuit groups, each of which includes a Core board module, an IO board module, a Key board module, and an EH board module; The Core board module is provided with a two-port switch for cascading, the Core board modules in adjacent circuit groups are connected in sequence, and the Core board modules in adjacent circuit groups are connected to the IO board modules in a one-to-one correspondence; The IO board modules in adjacent circuit groups are connected in sequence, and each IO board module is provided with 16 optocoupler input branches and 24 output branches. The IO boards in adjacent circuit groups are connected to the Key board modules in a one-to-one correspondence; The Key board module is used to control the current direction and interlocking, and the Key board module in the circuit group is connected to the EH board module; The EH board module is used to drive the stepper motor to push and pull the high-voltage switch to a specified position; Each of the circuit groups is connected to a PLC signal, and the PLC is connected to a PC signal.

2. The digital high-voltage cabinet circuit according to claim 1, characterized in that: The 24 output branches include 10 relay-type output circuits and 14 transistor-type output circuits.

3. The digital high-voltage cabinet circuit according to claim 2, characterized in that: The 10-way relay-type output circuit and the 14-way transistor-type output circuit are connected via a serial-input-parallel-output signal processing circuit.

4. The digital high-voltage cabinet circuit according to claim 1, characterized in that: The 16 optocoupler input branches are connected via a parallel-input and serial-output circuit.

5. The digital high-voltage cabinet circuit according to claim 1, characterized in that: The key board modules corresponding to each circuit group include a first key board circuit, a second key board circuit, a third key board circuit, a fourth key board circuit and a fifth key board circuit; wherein: The first key board circuit includes a first key card socket, wherein pins 1, 3, and 4 of the first key card socket are connected, and pins 2, 5, and 6 of the first key card socket are connected; The second key board circuit includes a second key card socket, wherein pins 2, 3, and 4 of the second key card socket are connected, pins 5 and 8 of the second key card socket are connected, and pins 6 and 9 of the second key card socket are connected; The third key board circuit includes a third key card socket, wherein pin 2 of the third key card socket is connected to pin 3, and pin 4 of the third key card socket is connected to pin 10; The fourth key board circuit includes a fourth key card socket, wherein pins 1, 3, and 4 of the fourth key card socket are connected, and pins 5, 6, and 10 of the fourth key card socket are connected; The fifth key board circuit includes a fifth key card socket, wherein pins 3, 4 and 10 of the fifth key card socket are connected, pins 5 and 11 of the fifth key card socket are connected, and pins 6 and 12 of the fifth key card socket are connected.

6. The digital high-voltage cabinet circuit according to claim 5, characterized in that: The specifications of the first key card socket, the second key card socket, the third key card socket, the fourth key card socket and the fifth key card socket are all 805_3.96_2*6.

7. The digital high-voltage cabinet circuit according to claim 1, characterized in that: The Core board module includes a core control chip, a network chip and a switch chip; The core control chip is connected to the switch chip through the network chip, and is used to parse network communication data and control corresponding outputs, as well as broadcast the read input status to the network; The network chip is connected to the core control chip via an SPI interface; The switch chip is connected to the network chip, and the switch chip is connected to the IO board module through a connection terminal.

8. The digital high-voltage cabinet circuit according to claim 1, characterized in that: The IO board module also includes an IO board level conversion circuit for converting the input 24V voltage into 5V and 3.3V output.

9. The digital high-voltage cabinet circuit according to claim 1, characterized in that: The EH board module includes an EH board level conversion circuit, a drive control chip, a motor drive chip, a current regulation circuit, a chip power supply circuit, and a photoelectric isolation input circuit; The EH board level conversion circuit is connected to the drive control chip, the motor drive chip, the current regulation circuit, the chip power supply circuit and the photoelectric isolation input circuit, and is used to stabilize the voltage and output 5V and 3.3V voltages; The drive control chip is connected to the drive control chip, the motor drive chip, the current regulation circuit, the chip power supply circuit, and the photoelectric isolation input circuit, and is used to receive input signals and set working positions, as well as generate pulse signals; The motor driving chip is used to receive the pulse signal generated by the driving control chip; The photoelectric isolation input circuit is connected to the IO board module.

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