Clock synchronization device for synchronous phase measuring in power system

Abstract

The invention discloses a clock synchronization device for measuring the synchronous phasor of an electric power system. Wherein, the local time synchronization module constitutes a synchronization time service network through connecting to the network protocol, an antenna and the GPS time receiver module receive the signal of the time information, the main module resolves the time information and resets the local real-time clock in the main module; the main module sends the time information to a second module through the network protocol and resets the local real-time clock in the second module, thus completes the time service of the local time synchronization modules in the main and second modules as the synchronization time service network. The clock synchronization device of the invention adopts a high-precision GPS time service mode and a low-cost main and second network time service mode, which satisfying the requirement of the high-precision clock synchronization in the measurement of the synchronous phasor in an electric power system, decreases the dependence on the GPS time receiving module when adopting the high-precision GPS time service mode in the entire network, and reduces the cost.

Description

technical field [0001] The invention relates to a clock synchronization device, in particular to a device for synchronizing the clocks of each measurement node in a power system synchrophasor measurement network. Background technique [0002] In modern power systems, synchronized phasor measurement systems are used to provide phasor information with global synchronization time stamps, providing data for dynamic state estimation and online steady-state analysis of power systems. Therefore, the system is of great significance to ensure the safe and stable operation of the power system. As an important part of the synchrophasor measurement system, the clock synchronization device or module provides a stable and high-precision clock synchronization signal to ensure that the phasor measurement meets certain accuracy requirements. [0003] At present, in the power system synchrophasor measurement network, there are two main clock synchronization method...

AI Technical Summary

Problems solved by technology

At present, the IEEE1588 protocol is generally implemented by software or a combination of software and hardware, which is relatively simple and economical to implement, but its shortcomings are also obvious: the clock synchronization accuracy is not high, and it cannot achieve wide-area high precision clock synchronization etc.

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