Judgment method and system for substation time system synchronization abnormality

Abstract

The invention discloses a method for judging synchronous exception of a transformer substation time system. The method comprises the following steps of obtaining sequence of events (SOE) records of the transformer substation time system and reading recording time in the SOE records; obtaining receiving time of the SOE records in a dispatching automation system; contrasting the recording time and the receiving time and judging whether synchronous exception occurs; and sending alarm information when the synchronous exception occurs. The invention further discloses a system for judging synchronous exception of the transformer substation time system correspondingly. The method and system can achieve automatic long-distance monitoring of the transformer substation time system, and can timely and automatically alarm when time synchronous exception is discovered.

Description

technical field [0001] The invention relates to the technical field of substation time synchronization, in particular to a method for judging abnormality of substation time system synchronization, and a judging system for judging abnormality of substation time system synchronization. Background technique [0002] SOE record (sequence of events record) is a kind of important information in the power dispatching automation system. When the power system fails, SOE record is often relied on to analyze the whole event occurrence process. Each SOE record has its own time with milliseconds. When analyzing the fault occurrence process, it relies on the time of the SOE record itself to distinguish the sequence of occurrence of each fault information, and obtain a clear and complete fault event occurrence process from the time dimension. , so as to judge whether the action sequences and action results of various devices, equipment, and systems in the power system are correct. If ther...

AI Technical Summary

Problems solved by technology

If there is a problem with the time of SOE recording itself, it will cause confusion in the analysis of the fault event occurrence process, which will affect the analysis and judgment of the fault, and finally affect the fault handling efficiency

[0003] Since many substations are currently unattended substations, the time synchronization of the station time system is abnormal or the time synchronization between the station device and the station time system is abnormal, which can only be checked by the staff on site at regular intervals. The monitoring method is time-consuming and laborious, and cannot be found in time abnormal situation

At this stage, there is a lack of an effective technical means to realize the remote automatic analysis and judgment of the synchronization abnormality of the substation time system

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