CN214755728U

CN214755728U - Intelligent GIS control device based on VxWorks system

Info

Publication number: CN214755728U
Application number: CN202023215407.6U
Authority: CN
Inventors: 吴晗序; 赵义松; 李坚; 陈黎皓; 邢凯; 刘馨然; 王昊; 宋成伟
Original assignee: State Grid Corp of China SGCC; Electric Power Research Institute of State Grid Liaoning Electric Power Co Ltd
Current assignee: State Grid Corp of China SGCC; Electric Power Research Institute of State Grid Liaoning Electric Power Co Ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-11-16
Anticipated expiration: 2030-12-28

Abstract

The utility model discloses an intelligent GIS control device based on VxWorks system, including shell and intelligent unit, the intelligent unit sets up in the shell, and the intelligent unit includes IED power supply unit, core cell and export the control unit, and the core cell is connected with IED power supply unit and export the control unit respectively; the core unit comprises a core mainboard and an optical fiber network card, the core mainboard is fixedly arranged on a substrate in the shell, the optical fiber network card is connected with the core mainboard through a PCI-E interface, and the core mainboard is connected with a station control layer network host through the optical fiber network card. Traditional GIS only needs to install the controlling means who designs in this application additional, can realize traditional GIS digital control, satisfies the requirement of inserting smart power grids. Therefore, the production process of the intelligent GIS is compatible with the traditional GIS production mode, and the production cost and the access threshold of the intelligent GIS are reduced. Compared with the traditional GIS digital control realized by a rule conversion device, the control device has the advantages that the response speed is increased, the time delay is reduced, and the stability of transmission time delay is improved.

Description

Intelligent GIS control device based on VxWorks system

Technical Field

The utility model relates to an electric power system and automatic field especially relate to an intelligent GIS controlling means based on VxWorks system.

Background

At present, in the starting development stage of energy internet in China, a smart grid is rapidly expanded as an important component, more GIS equipment is required to be connected into the smart grid, the GIS serving as high-voltage equipment has high manufacturing cost and large quantity of demands, and the traditional GIS equipment production process is mature and has large capacity, so that a digital GIS implementation scheme which is compatible with the traditional GIS production mode and has low cost and low admission threshold is necessary.

Disclosure of Invention

In order to solve the technical problem, an intelligent GIS control device based on a VxWorks system is provided, and the technical scheme is as follows:

an intelligent GIS control device based on a VxWorks system comprises a shell and an intelligent unit, wherein the intelligent unit is arranged in the shell and comprises an IED power supply unit, a core unit and an outlet control unit, and the core unit is respectively connected with the IED power supply unit and the outlet control unit; the core unit comprises a core mainboard and an optical fiber network card, the core mainboard is fixedly arranged on a substrate in the shell, the optical fiber network card is connected with the core mainboard through a PCI-E interface, and the core mainboard is connected with a station control layer network host through the optical fiber network card.

The outlet control unit comprises a photoelectric isolation circuit and an outlet relay, the outlet relay is connected with the core mainboard through the photoelectric isolation circuit, and the outlet relay is connected with the operating mechanism through an electric control line.

The IED power supply unit comprises a laser, a photoelectric converter, a driving and carrier device and a temperature control protection device, wherein the laser is connected with the photoelectric converter through an optical fiber, and the photoelectric converter is connected with the core mainboard and supplies power to the core mainboard.

The drive and carrier means control the laser.

The temperature control protection device limits the laser output.

The photoelectric converter is composed of a DC-DC converter and a photoelectric cell.

Compared with the prior art, its beneficial effect lies in:

traditional GIS only needs to install the controlling means who designs in this application additional, can realize traditional GIS digital control, satisfies the requirement of inserting smart power grids. Therefore, the production process of the intelligent GIS is compatible with the traditional GIS production mode, and the production cost and the access threshold of the intelligent GIS are reduced. Compared with the traditional GIS digital control realized by a rule conversion device, the control device has the advantages that the response speed is increased, the time delay is reduced, and the stability of transmission time delay is improved.

Drawings

FIG. 1 is a schematic diagram of a digital GIS primary and secondary device assembly;

FIG. 2 is a schematic diagram of the structure of an intelligent GIS control device;

FIG. 3 is a schematic diagram of the appearance and interface of an intelligent GIS control device;

FIG. 4 is a schematic diagram of an IED power supply unit configuration;

FIG. 5 is a schematic diagram of an IED power supply unit over-current protection circuit;

FIG. 6 is a schematic diagram of an IED power supply unit drive circuit design;

FIG. 7 is a circuit diagram of an exit control unit;

FIG. 8 is a flowchart of a GRT procedure;

fig. 9 is a schematic diagram of SGM application association.

In the figure: 1. IED shell interface, 2, 220/110V interface, 3, optical fiber interface, 4, net gape, 5, primary line energy supply interface, 6, USB interface, 7, 485 serial ports, 8, line energy supply DCSV interface, 9, energy supply optical fiber interface.

Detailed Description

To facilitate understanding and practice of the present invention for those of ordinary skill in the art, the present invention will be described in further detail with reference to the accompanying drawings and detailed description, wherein the following examples are provided for illustrating the present invention, but it should be understood that the scope of the present invention is not limited by the detailed description.

Example 1

As shown in fig. 2, in the core unit, a core motherboard is fixed on a substrate at the bottom in a housing through screws, connected with an optical network card through a PCI-E interface, and connected with a station control layer network host through the optical network card; the core unit is connected with the outlet control unit through a serial port data line, and is converted into a relay control signal in the outlet control unit, an outlet relay working power supply is accessed from the operating mechanism control body, and the outlet relay is connected to an operating mechanism control wiring port through an electric control line; the laser is connected with the photoelectric converter through optical fibers to form an IED power supply unit, and the IED power supply unit is connected with the core unit through 5VDC to provide energy for the core unit.

Example 2

As shown in fig. 2, the IED power supply unit supplies energy to the core unit, the energy is emitted by a 350mW laser, and is transmitted through an optical fiber and photoelectrically converted into electric energy; the real-time monitoring data are collected by the sensor and are transmitted into the core unit through the GOOSE and SV network, the data enter the PCI-E bus through the optical fiber, the transmission speed is guaranteed, the core unit processes the data and then outputs the data to the outlet control unit, the signals are shielded from the influence of primary high-voltage equipment through photoelectric isolation, and the power control signals are output to the operating mechanism body through the outlet relay.

Example 3

As shown in fig. 3, the casing comprises a shell body, an interface panel and an IED casing, wherein the shell body is made of 7075 aluminum alloy, and is internally provided with B-604G conductive paint, and the size of the shell body is 120cm × 65cm × 40 cm; the interface panel material is 304 stainless steel, is provided with 220/110V interface 2, fiber interface 3, net gape 4, primary circuit energy supply interface 5, USB interface 6, 485 serial ports 7, circuit energy supply DCSV interface 8, energy supply fiber interface 9.

Example 4

As shown in fig. 4, the IED power supply unit includes: the device comprises a laser, a DC-DC converter, a photocell, a driving and carrier device and a temperature control protection device; the IED power supply unit provides direct-current sustainable energy input through a 5VDC 3000mA power supply interface, an SPL2F81 type laser transmitter is used as energy supply output, the output luminous power is 1.7w, and the maximum driving current is 2.7A; the primary equipment end adopts a PPC type photocell and a DC-DC converter for photoelectric conversion, the conversion efficiency is higher than 26%, and the intermediate medium adopts optical fibers for energy transmission.

Example 5

As shown in fig. 5, the laser limits the output through the temperature control protection device, and the transient current surge or the long-time operation at a large current will affect the service life of the laser and even damage the laser, so an overcurrent protection circuit is designed to limit the laser current, and the circuit uses the RS flip-flop as a core device. The front end is a comparator which generates an overcurrent trigger signal. The back-end circuit inverts and amplifies the trigger signal by controlling a MOS transistor M on the current path of the laser to act as a switch₂The over-current laser is protected by the on-off of the switch.

Example 6

As shown in FIG. 6, the laser device excites the light energy under the control of the driving and carrier devices, and in order to combine the light energy transmission with the asynchronous serial communication, a constant current source circuit capable of realizing the carrier driving is designed, the frequency of the pulse current can reach 100kHz, so that the control information of the data acquisition system can be transmitted to the high-voltage side in the form of light pulse, the signal optical fiber and the photoelectric conversion device are reduced, and the power consumption of the high-voltage side is also reduced; the information transmission uses Manchester coding, so that the average energy is not changed, the normal work of a high-voltage side power supply is ensured while the information transmission is carried out, the circuit takes a high-power MOS tube as a core element, 3 amplifiers form a driving and negative feedback loop, and RS is a sampling resistor.

Example 7

As shown in fig. 7, the outlet control unit includes: the photoelectric isolation circuit and the outlet relay adopt the output mode of the phase inverter to provide the functions of anti-interference, signal amplification and the like, the core mainboard inputs an input/output signal to the outlet control unit, and the outlet control unit outputs a control signal to the operating mechanism.

Example 8

As shown in fig. 8, the GRT functions as: analyzing an APDU coding part of the received GOOSE message, and then transmitting the analyzed APDU coding part to other applications to finish relative operation, Get: acquiring data; and (3) Up: updating the data; and Read: reading APDU codes; write: writing APDU codes; call: calling a function; TG: the data is acquired at regular time, and the flow of the data is briefly described as 2 processes of analysis and judgment.

Example 9

As shown in fig. 9, regarding application layer task design, wherein GOOSE message information transmission request is generally completed within 1ms, which is the message with the highest real-time requirement in the model, and SAV mainly transmits data of the merging unit where the electronic transformer is located to the bay level device continuously, which generally requires a single transmission completed within 2-3 ms. The SAV has large communication traffic and high real-time requirement, wherein the SGM is a communication service with the highest real-time requirement defined by IEC61850, and other types of applications are similar to the SAV, including the implementation of analysis and receiving processing modes of network transmission mechanisms under VxWorks. The frame structure of GOOSE message can be simply divided into 2 parts: the frame word domain comprises an MAC address, a TPID (mark protocol identification), a TCI (mark control information), a VID (virtual LAN identification), an EtherType (Ethernet message type), an APPID (application identification), a Length and an Rserver 1&2 (reserved 1 and reserved 2), and the message content domain adopts an abstract syntax notation (ASN.1) to describe the composition of the APDU, which is the main message content. The SGM function is mainly implemented by tgoosereceivetask (GRT), tgooseendaska (GST), Fgooseend (FGS), the GOOSE subscriber is implemented by applying GRT, and the publisher function is implemented by GST and FGS.

Example 10

The core unit includes: the CPU core board is integrated with a PowerQUICC processor which is an MPC8315E with an encryption function and is designed with gigabit Ethernet, SATA, PCI-E, USB 3.0.0 and WATCHDOG; the expansion function unit carries a 32-Bit double data rate (DDR1/DDR2) memory controller, a 16-Bit local bus, 4 Direct Memory Access (DMA) channels, an RS-485 interface, a 256x8Bit EEPROM of an I2C interface, pins for I2C, SPI and GPIO, and a standard 16-wire JTAG interface, can provide operation support for MMS, GOOSE and SV technologies, so that an operating mechanism is accessed to a novel substation network conforming to IEC61850 protocol.

Example 11

The hardware configuration is as follows:

a processor: freescale MPC8315E (MPC8315VRAFDA), 620pin TEPBGA, master frequency 333M;

SDRAM: 128MB 32-bit DDR2 SDRAM memory (2 chips of 16-bit DDR2 SDRAM, 64M each);

NOR FLASH：8MB byte NOR FLASH；

NAND FLASH: 32MB byte 8bit NAND FLASH;

PCI bus: 32bit, 33 MHz-66 MHz, 1 standard PCI interface and 2 mini PCI interfaces;

SATA: 2 SATA (MPC8315 supports SATA interface);

PCI-E: 2 x1 PCI-E interfaces;

LAN: 2 1000M Ethernet ports, and TSEC0/TSEC1 RGMII of MPC 8315E;

serial port: 2 serial ports, wherein 1 serial port is used as a console port;

USB: 1 USB 2.0 high-speed HOST interface;

an EEPROM: 1I 2C interface EEPROM, 256x8Bit (shopping module);

and (4) other interfaces: I2C, SPI and GPIO are led out by a pin header;

a watchdog: MPC8315E chip is self-contained WATCHDOG;

JTAG: a standard 16-wire JTAG interface;

an indicator light: 1 power supply and 4 self-defining lamps;

pressing a key: 1 reset key;

power consumption: the typical power consumption is 5W, and the maximum power consumption is 8W;

the size of the main board is as follows: 15cm × 12 cm.

Example 12

The driver design based on the VxWorks operating system comprises the following steps: the main processing and the co-processing are designed in a coordinated mode, the main processing only carries out circular processing on a single communication buffer node in the annular linked list, and the co-processing supplements structure gaps under the indication of a protocol stack, so that the real-time performance and the stability of GOOSE network response are provided.

The present embodiments are intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omission, modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. An intelligent GIS control device based on a VxWorks system comprises a shell and an intelligent unit, wherein the intelligent unit is arranged in the shell and is characterized in that the intelligent unit comprises an IED power supply unit, a core unit and an outlet control unit, and the core unit is respectively connected with the IED power supply unit and the outlet control unit; the core unit comprises a core mainboard and an optical fiber network card, the core mainboard is fixedly arranged on a substrate in the shell, the optical fiber network card is connected with the core mainboard through a PCI-E interface, and the core mainboard is connected with a station level network host through the optical fiber network card.

2. The intelligent GIS control device according to claim 1, wherein the outlet control unit comprises a photoelectric isolation circuit and an outlet relay, the outlet relay is connected with the core mainboard through the photoelectric isolation circuit, and the outlet relay is connected with the operating mechanism through an electric control line.

3. The intelligent GIS control device according to claim 1, wherein the IED power supply unit comprises a laser, a photoelectric converter, a driver and carrier device and a temperature control protection device, the laser is connected with the photoelectric converter through an optical fiber, and the photoelectric converter is connected with the core motherboard to supply power to the core motherboard.

4. The intelligent GIS control device based on VxWorks system according to claim 3, wherein the driving and carrier device controls the laser.

5. The intelligent GIS control device based on VxWorks system according to claim 3, wherein the temperature control protection device limits the laser output.

6. The intelligent GIS control device based on VxWorks system according to claim 3, wherein the photoelectric converter is composed of a DC-DC converter and a photoelectric cell.