Clock synchronization monitoring method applicable to intelligent substation

Abstract

The invention relates to a clock synchronization monitoring method applicable to an intelligent substation and belongs to the technical field of the intelligent substations. The method includes the steps of carrying out closed-loop monitoring on a time synchronization system (comprising a clock device and a timed device) of the intelligent substation, monitoring state self-check information of a clock and the timed device in the substation to realize quick monitoring on predictable faults, and moreover monitoring service data associated with synchronous application of the timed device so that the state of time synchronization can be reflected and the time proofreading state can be monitored. The method solves the problems that feedback lacks and the working state can not be known when an existing clock synchronization system is in an open-loop state, and reduces operating accidents such as invalid event sequence records and even equipment crash caused by wrong time proofreading.

Description

Technical field [0001] The invention relates to a monitoring method suitable for clock synchronization in smart substations, and belongs to the technical field of smart substations. Background technique [0002] Most existing smart substations are designed as unattended, and all information is concentrated on the dispatcher during operation. Therefore, the event resolution of the entire dispatch automation system is particularly important. The main determinant of the event resolution is clock. The event information of the high-precision synchronization system is more conducive to accident analysis, fault location and hidden danger investigation. Because the clocks of the whole network are not synchronized, some special failures will be caused, such as data and information loss, SOE event information logic confusion, some workstations crashing or even system paralysis. The current time synchronization system of the automation system is in an open-loop state, and the working stat...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a monitoring method suitable for clock synchronization in smart substations, to solve the problem that the current time synchronization system is in an open loop state, lack of feedback and cannot know the working status, and reduce the invalid event sequence records caused by time synchronization errors , and even cause operational accidents such as equipment crashes

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