Research on Storage and Analysis Technology of Wide-Frequency Measurement Data in Station Domain Based on Edge Computing

Wide-frequency measurement device for monitoring electrical signals in the range of 0 Hz to 2500 Hz has been researched and applied. A large number of unprocessed wide-frequency measurement data is directly transmitted to the master station, which brings difficulties to the master station interaction and storage. This paper draws on the edge computing ideas of calculation, storage, and preprocessing near the data source, and designs a wide-frequency measurement system structure based on the perception layer, edge layer, and application layer. The data flow and functional architecture of the wide-frequency measurement station domain storage and analysis device at the edge computing layer are explained in detail. The storage and query of wide-frequency real-time data, event recording files, continuous recording data, and alarm information are studied. Wide-frequency measurement data is pre-processed by the elastic period. Based on the harmonic and inter-harmonic time-division transmission model, real-time and offline data can be interacted with the multi-plane master station at the same time. Finally, a wide-frequency measurement station storage and analysis prototype based on edge computing is developed, which achieved engineering applications and achieved good results.