Blar i Øvrige samlinger på forfatter "Uhlen, Kjetil"
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Variable speed hydropower plant with virtual inertia control for provision of fast frequency reserves
Reigstad, Tor Inge; Uhlen, Kjetil (Journal article; Peer reviewed, 2020) -
Vector fitting for estimation of turbine governing system parameters
Jakobsen, Sigurd Hofsmo; Uhlen, Kjetil (Chapter, 2017)With the introduction of more and more renewables into the power system both the inertia and the primary frequency reserves are expected to decrease. It is therefore a growing concern that the frequency quality will ... -
Voltage Stability Monitoring using a Modified Thevenin Impedance
Polster, Stefan; Renner, Herwig; Duong, Dinh Thuc; Uhlen, Kjetil (Chapter, 2017)This paper presents a method for voltage stability monitoring based on the maximum power transfer to the load. The only required information is the system topology, the data from PMUs and the operational status of synchronous ... -
Wind farm voltage dip measurements
Marvik, Jorun Irene; Tande, John Olav Giæver; Uhlen, Kjetil (Journal article; Peer reviewed, 2014)This paper is based on continuous measurements of voltages and currents from three wind farms for a period of 1 year, and the focus is on voltage dips. The purpose is to get an overview of the characteristics and rate of ...