Kinetic energy estimation in the Nordic system
Paper in proceeding, 2018

An algorithm for estimating the kinetic energy in the Nordic power system has been presented and compared to the TSOs’ estimation based on breaker status. The average error between the TSOs’ estimate and the proposed estimate is 0.83%. Furthermore, the standard deviation between the two estimates is 13 GWs, about 7% of the system average kinetic energy. The proposed estimate manages to capture the diurnal variation of the system kinetic energy with a correlation coefficient of 0.94. The total system kinetic energy in 2015 is estimated considering a possible contribution of kinetic energy from wind turbines during a large power imbalance. Lastly, the Nordic kinetic inertia is estimated for 2025, with and without possible contributions from wind, further increasing the released kinetic energy during a n-1 contingency with 22%.

kinetic energy

Power system stability

power system.

frequency control


Mattias Persson

RISE Research Institutes of Sweden

Peiyuan Chen

Power grids and Components

Proceedings of the 20th Power Systems Computation Conference

978-19-109631-0-4 (ISBN)

20th Power Systems Computation Conference, PSCC'18
Dublin, Ireland,

Inertia Support Strategies using Wind Turbines for Low-Inertia Power System with High Penetration of Wind Power

Swedish Energy Agency (38527-1), 2014-09-01 -- 2017-04-30.

Driving Forces

Sustainable development

Areas of Advance


Subject Categories

Energy Systems

Other Electrical Engineering, Electronic Engineering, Information Engineering



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