Power system time synchronization device based on Beidou system

Abstract

The invention discloses a power system time synchronization device based on a Beidou system. The power system time synchronization device comprises a device case and a clock unit. The input end of the clock unit is connected with a receiving unit, and the output end of the clock unit is connected with an output unit. The receiving unit comprises a Beidou module and a GPRS module, and the input end of the Beidou module and the input end of the GPRS module are connected with a receiving antenna. The output end of the Beidou module and the output end of the GPRS module are connected with a signal conditioning module. The clock unit comprises a core processor, the data input end of which is connected with an information reading module. The output end of the core processor is connected with an information exchange module, and the information exchange module is connected with the input end of the output unit. The core processor is also connected with a PPL phase-locked loop module, a man-machine interaction module, and a power supply module. The power system time synchronization device adopts a double-clock synchronization scheme adopting the Beidou and the GPS, and then the accurate and stable output of the internal time of the main clock formed by the above mentioned device is maintained at a nanosecond precision level.

Description

technical field [0001] The invention relates to the field of Beidou application technology, in particular to a power system time synchronization device based on the Beidou system. Background technique [0002] The main features of modern power grids are long-distance power transmission, high voltage, and large units. The basis of its operation monitoring is communication technology, relay protection technology and computer technology. Grid health is constantly changing over time, and at the same time, it is managed hierarchically. Some electrical equipment operates under the command of a remote dispatcher. Therefore, a unified and accurate time standard is very important in the power grid. The time standard is used in relay protection, computer communication network, operation report, fault recording, event sequence recording, lightning location and real-time information collection in the power system. , AGC frequency modulation and load control and many other fields are v...

AI Technical Summary

Problems solved by technology

At present, the time synchronization in the power system usually uses GPS receivers from the United States. Due to the inconsistent processing methods and interface standards, the reliability of the entire system cannot be guaranteed, and it is too dependent on GPS, which may easily cause leakage of important national security information.

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