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  • Frequency - historical data

    Frequency of the Nordic synchronous system with a 10 Hz sample rate.

    The frequency measurement data has been divided into archives consisting of monthly frequency measurement data. Within the archives, the data is divided into daily CSV-files that can be manipulated using common data analysis software.

    The frequency is measured at 400 kV substations at different locations in Finland with a sample rate of 10 Hz. The data may contain some gaps due to telecommunication errors etc. The times are according to UTC+2 / UTC+3 during daylight saving time period.

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