Autonomous controllable traction power supply feeder protection measurement and control device

Abstract

The utility model relates to an autonomous controllable traction power supply feeder protection measurement and control device, which comprises a CPU (central processing unit) plug-in unit, an alternating current plug-in unit, an input plug-in unit, an output plug-in unit, an operation plug-in unit, a power supply plug-in unit, a panel plug-in unit and a mother board plug-in unit which are connected through plug-in terminals. The panel plug-in and the mother board plug-in are connected through the flat wire harness. The CPU plug-in comprises a domestic CPU chip and a domestic FPGA chip, the domestic CPU chip and the domestic FPGA chip are in data communication through an LIO bus and a high-speed PCIE, and the CPU plug-in communicates with the panel plug-in through an Ethernet interface to achieve a man-machine interface function. Input quantity acquisition and switch control output are realized through interaction information of the input and output bus, the input plug-in and the output plug-in; the device provided by the utility model has strong practical value and application prospect.

Description

TECHNICAL FIELD

[0001] The utility model belongs to cable installation technical field especially relates to a self -controlling traction power supply feeder protection measurement and control device. BACKGROUND

[0002] Feeder protection measurement and control device is the important component of railway traction power supply automation system, and the protection measurement and control device of the railway traction power supply automation system being used at present all adopt a large number of imported components and foreign real-time operating system, and power supply safety faces the great supply chain security risk and information security risk. SUMMARY

[0003] The utility model solves its technical problem and is implemented by the following technical scheme:

[0004] A self -controlling traction power supply feeder protection measurement and control device, including CPU insert, AC insert, incoming insert, outgoing insert, operation insert, power supply insert, panel insert, mother board insert, CPU insert, AC insert, incoming insert, outgoing insert, operation insert, power supply insert and mother board insert are connected through the terminal connection, and the panel insert and the mother board insert are connected through the flat wire harness;

[0005] CPU insert includes domestic CPU chip and domestic FPGA chip, and the domestic CPU chip and the domestic FPGA chip are communicated with data through LIO bus and high-speed PCIE, and CPU insert realizes man-machine interface function by the communication of Ethernet interface and panel insert, and realizes incoming quantity acquisition and switch control output by the interactive information of incoming and outgoing bus and incoming insert and outgoing insert.

[0006] Further, the AC insert realizes the acquisition of feeder voltage and current signals, the incoming insert and the outgoing insert realize the acquisition of feeder circuit breaker and related isolating switch position signals and the on-off control of switches, the operation insert realizes the operation control of circuit breakers, the panel insert realizes the display of signal lights and liquid crystals and the operation of keyboards, provides man-machine interface, the power supply insert provides power supply for the device, and the mother board insert realizes the signal connection of each insert, and the CPU insert realizes the protection of feeders, AC measurement, switch acquisition and control and communication.

[0007] Further, the domestic CPU chip adopts a multi-core processor, and the software adopts a real-time multi-task operating system and a Linux system.

[0008] Further, the device adopts AD signal complex sampling technology for the acquisition of AC signals, provides independent 2-way AD sampling for each way of AC signals, mutually checks 2-way sampling data, alarms and locks related protection functions when the difference between 2-way sampling data exceeds a certain range.

[0009] Further, the device uses NOR Flash of the CPU plug-in as the main memory, and uses NAND Flash as the backup memory, and when the main storage information is checked to be wrong, the backup memory information is used.

[0010] Further, the plug-in type interface of the plug-in, the plug-in and the operation plug-in of the device is configured to provide the CPU detection, and when the plug-in type and the configuration are wrong, the CPU judges the plug-in type and gives an alarm information.

[0011] The device has the advantages and positive effects that:

[0012] The utility model discloses a kind of self-controllable traction power supply feeder protection measurement and control device, give the hardware design scheme of device, in view of the case that localization component and operating system reliability are not high, it is proposed to adopt real-time multitask operating system and Linux system double-core design, AD signal complex sampling, double medium storage backup and checking etc. BRIEF DESCRIPTION OF DRAWINGS

[0013] The technical solutions of the utility model will be further described in detail below in combination with drawings and embodiments, but it should be known that these drawings are only designed for explanation purpose, so it is not as the limitation of the range of the utility model.This further, unless specially pointed out, these drawings only intend to conceptually illustrate the structural configuration described here, and it is not necessary to draw in proportion.

[0014] Figure 1 The hardware structure diagram of the self-controllable traction power supply feeder protection measurement and control device provided by the embodiment of the utility model is shown in the figure;

[0015] Figure 2 The hardware backplane diagram of the self-controllable traction power supply feeder protection measurement and control device provided by the embodiment of the utility model is shown in the figure;

[0016] Figure 3 The CPU plug-in architecture diagram of the self-controllable traction power supply feeder protection measurement and control device provided by the embodiment of the utility model is shown in the figure;

[0017] Figure 4 The plug-in type self-checking schematic diagram of the self-controllable traction power supply feeder protection measurement and control device provided by the embodiment of the utility model is shown in the figure. CONCRETE EMBODIMENT

[0018] First, it needs to be explained that the following will be in an exemplary manner to specifically illustrate the specific structure, features and advantages of the utility model, however, all the description is only used for illustration, and should not be understood as forming any limitation on the utility model. In addition, any single technical feature described or implied in the embodiments mentioned in the present application, or any single technical feature shown or implied in the drawings, can still continue to be combined or deleted between these technical features (or their equivalents), so as to obtain more other embodiments of the utility model which can not be directly mentioned in the present application. In addition, for the purpose of simplifying the drawing, the same or similar technical features can only be indicated in one place in the same drawing.

[0019] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0020] Embodiment 1

[0021] As Figures 1-4 shown, the self-controllable traction power supply feeder protection and control device provided by the embodiment comprises a CPU plug-in, an AC plug-in, an incoming plug-in, an outgoing plug-in, an operation plug-in, a power supply plug-in, a panel plug-in and a motherboard plug-in, the CPU plug-in, the AC plug-in, the incoming plug-in, the outgoing plug-in, the operation plug-in, the power supply plug-in and the motherboard plug-in are connected through plug-in terminals, and the panel plug-in and the motherboard plug-in are connected through a flat wire harness.

[0022] The CPU plug-in comprises a domestic CPU chip and a domestic FPGA chip, data communication is carried out between the domestic CPU chip and the domestic FPGA chip through an LIO bus and a high-speed PCIE, the CPU plug-in realizes a man-machine interface function through communication with the panel plug-in through an Ethernet interface, and realizes incoming quantity acquisition and switch control output through interaction information with the incoming plug-in and the outgoing plug-in through an incoming and outgoing bus.

[0023] The AC plug-in realizes acquisition of feeder voltage and current signals; the incoming plug-in and the outgoing plug-in realize acquisition of feeder circuit breaker and related isolating switch position signals and on-off control of switches; the operation plug-in realizes operation control of the circuit breaker; the panel plug-in realizes signal lamp and liquid crystal display and keyboard operation, and provides a man-machine interface; the power supply plug-in provides power supply for the device; the motherboard plug-in realizes signal connection of each plug-in; and the CPU plug-in realizes protection of the feeder, AC measurement, switch acquisition and control and communication.

[0024] The domestic CPU chip adopts a multi-core processor, and software adopts a real-time multi-task operating system and a Linux system; the real-time multi-task operating system is responsible for protection functions, the Linux system is responsible for man-machine interface and external communication functions, and the two systems adopt an Ethernet communication mode, are independent of each other, realize decoupling and isolation of protection and control functions and communication functions.

[0025] As Figure 3 shown, the device CPU plug-in integrates domestic high-performance multi-core processor CPU and FPGA chip, and performs high-speed data exchange through various high-speed interfaces; the CPU plug-in and the panel plug-in communicate through an Ethernet interface to realize human-machine interface such as information display and key operation; through an input-output bus and input, output and operation plug-in interaction signals, input quantity acquisition and switch control output are realized; the device also provides a plurality of Ethernet interfaces to access a comprehensive automation system.

[0026] The device adopts AD signal multiple sampling technology for AC signal acquisition, and provides independent 2-way AD sampling for each AC signal, the 2-way sampling data are mutually checked, and when the difference between the 2-way sampling data exceeds a certain range, an alarm is given, the related protection function is locked, and the AD signal multiple sampling technology improves the reliability of sampling.

[0027] The device uses NOR Flash of the CPU plug-in as the main storage, and uses NAND Flash as the backup storage, both of which are used for storing important programs and key information, when the main storage information is checked to be wrong, the backup storage information is used, the double-medium storage backup and checking technology improves the reliability of storage.

[0028] As Figure 4 shown, the input, output and operation plug-ins of the device are all configured with different plug-in type interfaces to provide CPU detection, such as input plug-in type 1, output plug-in type 3, etc., and the output feedback loop self-checking is also provided for the output loop, when the plug-in type and configuration do not correspond to the CPU judgment, an alarm information is given.

[0029] The software of the device adopts an application component mode, including real-time data module, protection processing module, process layer module, recording module, event module, communication module, file operation module, etc.; the device provides three-section adaptive distance protection, current fast-break protection, low-voltage starting overcurrent protection, current increment protection, loss of voltage protection, post-acceleration protection, primary automatic reclosing, incoming line automatic switching, PT broken line locking, fault distance measurement and other functions, to meet the traction power feeder protection and control requirements.

[0030] The above embodiments are described in detail, but the content described is only a preferred embodiment of the utility model, and cannot be considered as limiting the implementation range of the utility model. Any equivalent change and improvement within the scope of the utility model application shall still belong to the patent coverage range of the utility model.

Claims

1. A self-controllable traction power supply feeder protection and control device, characterized in that, It includes CPU plug-in, AC plug-in, input plug-in, output plug-in, operation plug-in, power plug-in, panel plug-in, and motherboard plug-in. The CPU plug-in, AC plug-in, input plug-in, output plug-in, operation plug-in, power plug-in, and motherboard plug-in are connected by plug-in terminals, and the panel plug-in and motherboard plug-in are connected by flat wire harnesses. The CPU module includes a domestically produced CPU chip and a domestically produced FPGA chip. The domestically produced CPU chip and the domestically produced FPGA chip communicate with each other via an LIO bus and a high-speed PCIe. The CPU module communicates with the panel module via an Ethernet interface to realize the human-machine interface function. It realizes input quantity acquisition and switch control output by exchanging information with the input and output buses and input and output modules.

2. The autonomous and controllable traction power supply feeder protection and control device according to claim 1, characterized in that: The AC module acquires feeder voltage and current signals; the input and output modules acquire position signals of the feeder circuit breaker and related isolating switches and control the opening and closing of the switches; the operation module controls the operation of the circuit breaker; the panel module provides a human-machine interface with indicator lights, LCD display, and keyboard operation; the power supply module provides power to the device; the motherboard module enables signal connections between the modules; and the CPU module enables feeder protection, AC measurement, switch acquisition and control, and communication.

3. The autonomous and controllable traction power supply feeder protection and control device according to claim 1, characterized in that: The domestically produced CPU chip uses a multi-core processor, and the software uses a real-time multitasking operating system and a Linux system.

4. The autonomous and controllable traction power supply feeder protection and control device according to claim 1, characterized in that: The device uses AD signal acquisition technology to acquire AC signals, providing independent 2-channel AD sampling for each AC signal. The 2-channel sampling data are cross-checked, and an alarm is triggered if the difference between the 2-channel sampling data exceeds a certain range, thus blocking the relevant protection functions.

5. The autonomous and controllable traction power supply feeder protection and control device according to claim 1, characterized in that: The device uses the NOR Flash of the CPU module as the main memory and the NAND Flash as the backup memory. When the main memory information verification fails, the backup memory information is used.

6. The autonomous and controllable traction power supply feeder protection and control device according to claim 1, characterized in that: The device's input, output, and operation modules are all equipped with different module type interfaces for CPU detection. When a module is inserted in the wrong position, the CPU will issue an alarm message if it determines that the module type and configuration are incorrect.

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