Intelligent substation online fault analysis method

Abstract

The invention relates to an intelligent substation online fault analysis method. The intelligent substation online fault analysis method comprises the steps of: performing real-time analytical processing on multi-source alarm information at a station end; analyzing signal action validity according to time constraint conditions; reading a fault instance associated with a valid signal for fault matching, wherein matching criteria comprises signal full action and signal action logics; combining with a fault recording file generated when a protective action signal is produced; performing false alarm degree analysis of the fault, and finally forming a comprehensive fault briefing comprehensively covering information such as fault data, fault instance, troubleshooting strategy and false alarm degree; and transmitting briefing data to a scheduling center. The intelligent substation online fault analysis method disclosed by the invention can effectively extract action signals, improve the analysis value of the data, improve the comprehensiveness of the alarm information, remove the false alarms in the station, improve the alarm precision, improve the system reliability, reduce the troubleshooting difficulty of the operation personnel, and save the troubleshooting time.

Description

Technical field [0001] The invention belongs to the technical field of power system substation automation, and in particular relates to an online fault analysis method of an intelligent substation. Background technique [0002] At present, my country's power system is in a period of rapid development. With the advancement of the construction of smart substations, the automation level of substations continues to improve, and the information collected at the station end is becoming more abundant. However, the station usually only sends important information to the dispatch center in real time, and lacks pre-processing and pre-analysis, resulting in incomplete and incomplete information sent, which affects the accuracy of the fault judgment of the dispatch automation master station system. At present, the power grid dispatch center adopts centralized monitoring, analysis, and control mode, while some systems still use polling methods to upload information. The speed is slow and real...

AI Technical Summary

Problems solved by technology

However, the station usually only sends important information to the dispatching center in real time, lacking preprocessing and pre-analysis, resulting in incomplete and incomplete information, which affects the accuracy of fault judgment of the dispatching automation master station system

The current power grid dispatching center adopts a centralized monitoring, analysis, and control mode, while some systems still use polling to upload information, which is slow and has poor real-time performance.

When a fault occurs, dispatching and operating personnel can only rely on the SCADA system to obtain real-time information, and with the assistance of relay protection professionals, use the wave recording information provided by the fault recording system to conduct comprehensive fault research and judgment. slow speed problem

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