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A ptp data synchronization and time monitoring system based on sdh multi-time sources

A time monitoring and data synchronization technology, applied in time division multiplexing system, multiplexing communication, electrical components, etc., can solve the problems of time deviation and untimed equipment

Active Publication Date: 2017-09-15
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST +1
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The time service of the clock system adopts one-way transmission, and the accuracy and accuracy of time service depend on the transmission process. If there is a problem in any link, it will eventually lead to time deviation or failure of the time service device

Method used

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  • A ptp data synchronization and time monitoring system based on sdh multi-time sources
  • A ptp data synchronization and time monitoring system based on sdh multi-time sources
  • A ptp data synchronization and time monitoring system based on sdh multi-time sources

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Embodiment Construction

[0020] See figure 1 , a kind of PTP data synchronization and time monitoring system based on SDH multi-time source, the present invention is characterized in that, comprises:

[0021] A time source 1, and an FPGA-based time source signal filtering module 2 connected thereto;

[0022] Realize the output protocol conversion module 5 based on FPGA that is connected to the time source signal filtering module 2 based on FPGA;

[0023] The DSP-based time source control module 6 that is connected with the output protocol conversion module 5 based on FPGA;

[0024] Wherein, the time source 1, and the time source signal filter module 2 connected to it based on FPGA are used to select the time source and filter the received pulse signal; the output protocol conversion module 5 based on FPGA is used to convert the output ; The DSP-based time source control module 6 is used to realize high-speed analysis, real-time comparison and sorting of multi-channel time source information, and aut...

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Abstract

The invention provides an SDH (Synchronous Digital Hierarchy)-based multi-time source PTP (Precision Time Protocol) data synchronization and time monitoring system. According to the system, time source signal filtering and protocol conversion are realized based on an FPGA; high-speed analysis, real-time comparison and sorting of multi-time source information can be realized based on a DPS kernel; and most accurate time signals are automatically selected as output time information. When the time monitoring system operates, the IEC61850 standard can be satisfied, a multi-time source information acquisition statistics table can be built, and functions such as remote transmission, on-site check and query of information can be realized.

Description

technical field [0001] FPGA-based multi-time source information fault-tolerant technology, multi-time source information fault-tolerant technology, DSP-based time source control technology. Background technique [0002] With the development of large-scale and high-precision measurement systems in power systems, it is necessary to establish a more accurate and manageable standard time system for the entire system. To meet the time synchronization accuracy requirements of various monitoring devices in the power system, such as power grid dispatching automation, wide-area power grid monitoring and control protection, intelligent substations, microcomputer protection, fault recording, traveling wave fault distance measurement, and lightning positioning systems. The same time base should be maintained with the associated automation device to facilitate system or equipment operation analysis and fault location. It is conducive to finding the cause of the accident, reducing the hi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J3/06
CPCH04J3/0667
Inventor 曹敏陈超王骏
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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