Browsing NTNU Open by Author "Haugdal, Hallvar"
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Achieving Enhanced Phasor POD Performance by Introducing a Control-Input Model
Haugdal, Hallvar; Uhlen, Kjetil Obstfelder; Jóhannsson, Hjörtur (Chapter, 2023)In this paper, an enhancement to the well known Phasor Power Oscillation Damper is proposed, aiming to improve its performance. Fundamental to the functioning of this controller is the estimation of a phasor representing ... -
Application of Phasor Measurements for Online Monitoring and Adaptive Damping Control of Electromechanical Oscillations
Haugdal, Hallvar (Doctoral theses at NTNU;2022:230, Doctoral thesis, 2022)Power systems are large and complex systems consisting of thousands of components, like generators, transformers and transmission lines, which function together to ensure that the voltage and frequency are close to the ... -
Developing an Application for Simulating a Parametrized PM Machine by FEM
Haugdal, Hallvar (Master thesis, 2016)A parametrized 2D model of a permanent magnet synchronous machine is developed in the finite elements method software COMSOL Multiphysics, along with a graphical user interface to control it. The GUI provides automatic ... -
Electric Field Simulations of High Voltage DC Extruded Cable Systems
Mauseth, Frank; Haugdal, Hallvar (Journal article, 2017)The market for high voltage DC (HVDC) transmission systems has increased dramatically the last few decades. This is mainly due to the economic, electrical, and environmental advantages for bulk power transmission over long ... -
Estimation of Oscillatory Mode Activity from PMU Measurements
Haugdal, Hallvar; Uhlen, Kjetil; Müller, Daniel; Jóhannsson, Hjörtur (Chapter, 2020)We propose a method for estimating the activity of oscillatory modes in power systems. The frequencies and mode shapes of the modes of interest are assumed to be known beforehand, either from linear modal analysis or from ... -
Fault Detection and Prediction in Smart Grids
Andresen, Christian Andre; Torsæter, Bendik Nybakk; Haugdal, Hallvar; Uhlen, Kjetil (Chapter, 2018)Modern society is to a larger and larger extent dependant on electric energy, and hence the reliance on and utilization of the electric grid is increasing steadily. At the same time the production and consumption patterns ... -
Mode Shape Estimation using Complex Principal Component Analysis and k-Means Clustering
Haugdal, Hallvar; Uhlen, Kjetil (Chapter, 2019)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 of two main steps: Firstly, Complex Principal ... -
A Novel Phasor Power Oscillation Damper With Adaptive Phase Compensation, Achieved Using Multiple Model Adaptive Estimation
Haugdal, Hallvar; Uhlen, Kjetil Obstfelder; Johannsson, Hjortur (Peer reviewed; Journal article, 2023)In this paper, an adaptive version of the well known Phasor Power Oscillation Damper is presented. The proposed controller is adaptive in the sense that the phase compensation between the measured input and the applied ... -
An Open Source Power System Simulator in Python for Efficient Prototyping of WAMPAC Applications
Haugdal, Hallvar; Uhlen, Kjetil Obstfelder; Jóhannsson, Hjörtur (Chapter, 2021)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 main objective is to facilitate fast ... -
Power Oscillation Monitoring using Statistical Learning Methods
Haugdal, Hallvar; Uhlen, Kjetil (Chapter, 2019)This paper describes development and testing of a method for estimation of electromechanic modes and corresponding mode shapes from frequency or voltage angle measurements in Wide Area Monitioring Systems. The method uses ...