Clock synchronizing and monitoring system

Abstract

The invention discloses a clock synchronizing and monitoring system mainly applied to an intelligent substation system. The clock synchronizing and monitoring system comprises a clock source and a node. The node has a clock synchronizing module, a clock monitoring module, and a delay measuring module. When the node of the clock synchronizing and monitoring system has a father node, the node is synchronized with the father node, and the time of the node is corrected based on the time of the father node or the clock source, wherein the priority of the time of the clock source is greater than that of the time of the father node. When the node has a child node, the node sends time check information to the child node. Thus, the time of the whole system is corrected, synchronized and monitored.

Description

technical field [0001] The invention relates to the fields of substation automation technology, on-line monitoring and clock synchronization. Background technique [0002] Smart substation measurement, signal acquisition and control output are realized through the network, and the accuracy of its acquisition and control will depend on the quality of clock synchronization. When the clocks between devices are not synchronized, the acquisition of voltage and current will be out of sync, resulting in power , Power factor, voltage, current and other errors are large or even invalid. When the clocks of the devices are not synchronized, the GOOSE signal will be delayed, and the order in which the signals occur cannot be judged. These will make the relay protection device fail or even malfunction, and bring harm to the operation of the substation and the stability of the power grid. [0003] Therefore, effectively monitoring the clock synchronization of substations and even grid n...

AI Technical Summary

Problems solved by technology

[0002] Smart substation measurement, signal acquisition and control output are realized through the network, and the accuracy of its acquisition and control will depend on the quality of clock synchronization. When the clocks between devices are not synchronized, the acquisition of voltage and current will be out of sync, resulting in power , power factor, voltage, current and other errors are large or even invalid

When the clocks between the devices are not synchronized, the GOOSE signal will be delayed, and the order in which the signals occur cannot be judged

These will cause the relay protection device to fail or even malfunction, and bring harm to the operation of the substation and the stability of the power grid.

Images