Marking method of time marks when power quality long-time recording data are stored

Abstract

The invention relates to a marking method of time marks when power quality long-time seamless recording data are stored. The marking method of the time marks when the power quality long-time recording data are stored comprises the following steps: in the process of real-time continuous data collection, when second pulse signals generated by a second time mark generation module are in a falling edge moment, the time mark data are marked in the collected data. According to the marking method of the time marks when the power quality long-time recording data are stored, accurate second time data blocks are inserted in collected voltage and current waveform data, an actual collection amplitude value and a time value of the voltage and current waveform data recorded every second are accurately marked, the data are in a format which is integral powers of 2 and meet the requirement of power quality analysis, so that the power quality long-time seamless recording data are stored and checked conveniently, and the accurate recording data of faults and event moments of each cyclic wave can be provided at the same time.

Description

technical field [0001] The invention relates to a method for establishing accurately marked time-scale data in power quality storage data in a long-time seamless wave recording device using electric power quality of a grid. Background technique [0002] In the file storage of long-term seamless recording of power quality, due to the large data storage capacity and fast data communication and storage requirements, it takes too long to perform PCI interface communication and store in fixed storage media such as hard disks for small data volumes. The requirement of long-term seamless wave recording of power quality cannot be realized. However, after continuous wave recording with a large amount of data, there are problems such as inaccurate correspondence between data and time and inability to accurately query the time interval of events after analysis and recall. There is an urgent need for long-term seamless wave recording of power quality. [0003] The accuracy of computer...

AI Technical Summary

Problems solved by technology

[0004] At present, due to the fact that most of the wave recording methods used by different manufacturers of power quality monitoring equipment or power wave recording equipment are intermittent fault wave recording methods, the stored data is intermittently stored, and some equipment that can continuously store wave recording, the data storage format It is also stored in the form of files, which is very inconvenient to search and analyze, and there is a large time error when analyzing the data, which brings great difficulties to the subsequent analysis and processing of power quality

For some foreign power quality continuous wave recording devices, the wave recording format and analysis and processing format of the data are not open, and the analysis results can only be given by their own software, which has great limitations.

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