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Bjørn Gustavsen

Sjefforsker

Bjørn Gustavsen

Sjefforsker

Bjørn Gustavsen
Telefon: 416 07 485
Avdeling: Energisystemer
Kontorsted: Trondheim

Publikasjoner og ansvarsområder

Publikasjoner

Publikasjon

Modelling of non-uniform lines using rational approximation and mode revealing transformation

https://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1482896

The authors present a methodology to improve the rational modelling of non-uniform lines (NuLs). First, they formulate a segmented chain matrix representation of the NuL, which is converted into a nodal admittance formulation with respect to the two line ends. The admittance matrix is fitted with ra...

Forfattere Lima Antonio Carlos Siqueira Moura Rodolfo A. R. Gustavsen Bjørn Alfred Schroeder Marcon Aurelio Oliveira
År 2017
Type Tidsskriftspublikasjon
Publikasjon

Variable Transmission Voltage for Loss Minimization in Long Offshore Wind Farm AC Export Cables

https://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1446425

Connection of offshore wind farms to shore requires the use of submarine cables. In the case of long HVAC connections, the capacitive charging currents limit the transfer capability and lead to high losses. This paper shows that the losses can be substantially reduced by continuously adjusting the c...

Forfattere Gustavsen Bjørn Alfred Mo Olve
År 2017
Type Tidsskriftspublikasjon
Publikasjon

Wideband modeling of a 45-MVA generator step-up transformer for network interaction studies

https://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1385542

A stable and passive six-terminal model is developed for a 45-MVA generator step-up transformer based on frequency sweep measurements in the range 5 Hz–10 MHz and curve fitting with rational functions. The modeling employs separate treatment of the zero sequence system in combination with a new vari...

Forfattere Gustavsen Bjørn Alfred Tandstad Bjørn
År 2017
Type Tidsskriftspublikasjon
Publikasjon

Black-box macromodeling and its EMC applications

https://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1425783

The main idea of black-box macromodeling is to approximate the dynamic behavior of complex systems in terms of lowcomplexity models or equivalent circuits. Such compact models can be derived through robust numerical algorithms, such as the Vector Fitting scheme, starting from frequency-or time-domai...

Forfattere Grivet-Talocia Stefano Gustavsen Bjørn Alfred
År 2016
Type Tidsskriftspublikasjon
Publikasjon

Inclusion of Wire Twisting Effects in Cable Impedance Calculations

https://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1410311

Cable-series impedance modeling is widely applied in electromagnetic transients simulations and power-loss calculations. The calculations are usually performed in a 2-D frame using the finite-element method or alternative approaches, such as MoM-SO, thereby losing the 3-D effects imposed by twisting...

Forfattere Gustavsen Bjørn Alfred Høyer-Hansen Martin Triverio Piero Patel Utkarsh R.
År 2016
Type Tidsskriftspublikasjon
Publikasjon

Optimal Time Delay Extraction for Transmission Line Modeling

https://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1398752

Frequency-dependent transmission line modeling by the traveling wave method requires to approximate the propagation function with a delayed rational function. Some approaches are based on modal decomposition where scalar functions are fitted with a rational model plus a single time delay. The delay ...

År 2016
Type Tidsskriftspublikasjon
Publikasjon

Apparent impedance analysis: A new method for power system stability analysis

https://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1391548

In this paper a new method for power system stability analysis is introduced. The method is based on injection of a small voltage or current in an arbitrary point of the system. The apparent impedance is defined as the ratio between the voltage and current in the injection point. It is shown that th...

Forfattere Rygg Atle Amin Mohammad Molinas Cabrera Maria Marta Gustavsen Bjørn Alfred
År 2016
Type Del av bok/rapport
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