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

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...

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