6 citations · 12 across the 9 of their papers we have counts for
11 papers
Estimating Closed-Loop Multiple-Input Single-Output Dynamic Systems using Gaussian Processes
Erik-Anant Stedjan Narayan, Sigurd Hofsmo Jakobsen, Kjetil Obstfelder Uhlen
This paper extends complex Gaussian process regression-based transfer function (TF) estimation from the single-input single-output setting to closed-loop multiple-input single-outp…
Achieving increased Phasor POD performance by introducing a Control-Input Model
Hallvar Haugdal, Kjetil Uhlen, Hjörtur Jóhannsson
In this paper, an enhancement to the well known Phasor Power Oscillation Damper is proposed, aiming to increase its performance. Fundamental to the functioning of this controller i…
An Open Source Power System Simulator in Python for Efficient Prototyping of WAMPAC Applications
Hallvar Haugdal, Kjetil Uhlen
An open source software package for performing dynamic RMS simulation of small to medium-sized power systems is presented, written entirely in the Python programming language. The…
Nonlinear Model Predictive Control of Variable Speed Hydropower for Provision of Fast Frequency Reserves
Tor Inge Reigstad, Kjetil Uhlen
This paper presents the development of a non-linear model predictive controller (MPC) for controlling variable speed hydropower (VSHP) plants. The MPC coordinates the turbine contr…
Variable speed hydropower plant with virtual inertia control for provision of fast frequency reserves
Tor Inge Reigstad, Kjetil Uhlen
In this paper, five virtual inertia control structures are implemented and tested on a variable speed hydropower (VSHP) plant. The results show that all five can deliver fast power…
Modelling of Variable Speed Hydropower for Grid Integration Studies
Tor Inge Reigstad, Kjetil Uhlen
This paper proposes a hydraulic model based on the Euler turbine equations suitable for the purpose of grid integration studies of variable speed hydropower (VSHP). The work was mo…
Optimized Control of Variable Speed Hydropower for Provision of Fast Frequency Reserves
Tor Inge Reigstad, Kjetil Uhlen
This paper deals with the design of controllers for variable speed hydropower (VSHP) plants with the objective of optimize the plants' performance. The control objectives imply ena…
Mode Shape Estimation using Complex Principal Component Analysis and k-Means Clustering
Hallvar Haugdal, Kjetil Uhlen
We propose an empirical method for identifying low damped modes and corresponding mode shapes using frequency measurements from a Wide Area Monitoring System. The method consists o…
Optimisation of energy and exergy of two-spool turbofan engines using genetic algorithms
Vin Cent Tai, Phen Chiak See, Cristinel Mares +1
This paper presents an application of Genetic Algorithm (GA) metaheuristics to optimise the design of two-spool turbofan engines based on exergy and energy theories. The GA is used…
Enhanced active power filter control for nonlinear non-stationary reactive power compensation
Phen Chiak See, Vin Cent Tai, Marta Molinas +2
This paper describes a method to implement Reactive Power Compensation (RPC) in power systems that possess nonlinear non-stationary current disturbances. The Empirical Mode Decompo…
Performance assessment of two active power filter control strategies in the presence of non-stationary currents
Vin Cent Tai, Phen Chiak See, Marta Molinas +1
This paper describes an active power filter (APF) control strategy, which eliminates harmonics and compensates reactive power in a three-phase four-wire power system supplying non-…