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.

Data and Resources

Additional Info

Field Value
Author Mikko Kuivaniemi
Author Email Mikko Kuivaniemi
Maintainer Mikko Kuivaniemi
Maintainer Email Mikko Kuivaniemi
Unit Hz
Data period 1 h
Contact person Mikko Kuivaniemi