Time setting device for digital substation

A substation and watchdog timer technology, applied in the direction of circuit devices, synchronization devices, electronic timers, etc., can solve the problems of lack of mature products, achieve flexible configuration, convenient management and operation, and realize the effect of interconnection and synchronization

Inactive Publication Date: 2010-02-17
JIANGSU FRONTIER ELECTRIC TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At this stage, the research on the application of IEEE1588 in digital substations is most

Method used

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  • Time setting device for digital substation
  • Time setting device for digital substation
  • Time setting device for digital substation

Examples

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Embodiment Construction

[0034] The present invention will be further described below in conjunction with the accompanying drawings.

[0035]A digital substation timing device provided by the present invention includes a core processing module 1, a PTP event processing module 2 communicating with the core processing module, an Ethernet communication interface module 3, a serial communication interface module 4, and a switch input and output module 5. It is characterized in that: the core processing module 1 includes a central processing unit AT91RM920011, the synchronous dynamic random access memory 12 connected to the central processing unit AT91RM920011, a parallel flash memory 13, a real-time clock, a watchdog timer 14 and The JTAG debugging port 15 constitutes a basic embedded system; the debugging serial port USART0, serial port 1 end USART1, and serial port 2 end USART3 of the central processing unit AT91RM920011 are connected with the serial communication interface module 4 respectively, and the...

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Abstract

The invention discloses a time comparing device for a digital substation, comprising a core processing module and a PTP event processing module, an Ethernet communication interface module, a serial communication interface module and a discrete input/output module, which communicate with the core processing module. The device is characterized in that the core processing module comprises a central processing unit (CPU) AT91RM9200 which forms a basic embedded system with a synchronous dynamic random access memory, parallel flash, a real-time clock, a watchdog timer and a JTAG debug port, which are connected with the CPU AT91RM9200. The PTP event processing module, an Ethernet transceiver DP83640 and protocol stack software/hardware supporting the IEEE1588 standard are combined to realize thehigh-precision time comparing function of the substation device. The device realizes the high-precision time comparing supporting the IEEE1588 standard and the time synchronization requirement of thedigital substation device.

Description

technical field [0001] The invention relates to a time synchronization device for realizing clock synchronization of a digital substation, belonging to the technical field of power system substation automation. Background technique [0002] With the development of digital substation technology, digital substation monitoring and control, fault analysis and operation management need to be established on a unified time basis. Electronic voltage and current transformers and a unified communication protocol based on the IEC61850 standard are widely used in digital substations to realize the information sharing of field operation data among various intelligent electronic devices (Intelligent Electronic Devices, IEDs). The digitalization of information collection provides conditions for the sharing of sampling data at the process level, and at the same time, it also brings about the problem of sampling synchronization of various electronic voltage and current transformers. In subs...

Claims

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Application Information

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IPC IPC(8): G04G5/00G04G7/00H02J13/00H04L7/00G04R20/00G04R40/00
CPCY02E60/723Y04S40/124Y04S10/16
Inventor 吴在军黄伟汪祺航李澄窦晓波胡敏强杜炎森王伏亮
Owner JIANGSU FRONTIER ELECTRIC TECH
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