• Analysing the stability of an islanded hydro-electric power system 

      Winkler, Dietmar (Journal article; Peer reviewed, 2018)
      Power system simulation is a large arena especially in connection with the large European power system. The challenges of large interconnected electrical power systems call for a sophisticated system modelling solution ...
    • Applying Design of Experiments Method for the Verification of a Hydropower System 

      Pham, Le Nam Hai; Winkler, Dietmar (Chapter, 2022)
      Today, renewable energy plays a major role in the transition towards environment-friendly energy sources. Hydropower is one of the most important renewable energy sources leading to the high interest of research associated ...
    • Developing protective limiters for a hydro power controller in modelica 

      Manoranjan, Luxshan; Winkler, Dietmar (Peer reviewed; Journal article, 2021)
      In recent years the operation of electrical power plants has become more and more challenging due to a more dynamic operation pattern in order to keep the voltage quality within the limits of what the electrical network ...
    • Developing Voltage Droop/Compensation Controller for a Hydro Power Controller in Modelica 

      Manoranjan, Luxshan; Winkler, Dietmar (Peer reviewed; Journal article, 2022)
      With the introduction of unregulated renewable energy such as wind, solar and tidal power, the operation of the electrical grid has become more and more challenging. The more dynamic production pattern requires more advanced ...
    • Efficient parameterization of modelica models 

      Beutlich, Thomas; Winkler, Dietmar (Peer reviewed; Journal article, 2021)
      This article presents the different approaches and use cases for efficient parameterization of Modelica models by means of external data resources. The main motivation is to improve the overall quality, testability and ...
    • Electrical Power System Modelling in Modelica – Comparing Open-source Library Options 

      Winkler, Dietmar (Journal article; Peer reviewed, 2017)
      The past modelling of electrical powers systems used to be a the domain of a few major power system modelling tools. Commercial tools1 like DIgSILENT PowerFactory [3], POWERSYS EMTP-RV [17], PSCADTM [14], Siemens PSS/E R ...
    • Formulation of Stochastic MPC to Balance Intermittent Solar Power with Hydro Power in Microgrid 

      Pandey, Madhusudhan; Winkler, Dietmar; Sharma, Roshan; Lie, Bernt (Peer reviewed; Journal article, 2021)
      In a microgrid with both intermittent and dispatchable generation, the intermittency caused by sources such as solar power and wind power can be balanced using dispatchable sources like hydro power. Both generation and ...
    • Mechanistic Model of an Air Cushion Surge Tank for Hydro Power Plants 

      Pandey, Madhusudhan; Winkler, Dietmar; Vereide, Kaspar; Sharma, Roshan; Lie, Bernt (Peer reviewed; Journal article, 2022)
      Due to the increasing use of renewable energy sources, and to counter the effects of fossil fuels, renewable dispatchable hydro power can be used for balancing load and generation from intermittent sources (solar and wind). ...
    • modelica.university: A Platform for Interactive Modelica Content 

      Winkler, Dietmar; Tiller, Michael (Journal article; Peer reviewed, 2017)
      The World Wide Web was conceived of as a medium for the expression and exploration of scientific and engineering ideas. However, much of the innovation in web technologies is now focused on consumer facing applications. Although ...
    • Modelling of a Hydro Power Station in an Island Operation 

      Winkler, Dietmar; Magnúsdóttir, Arndís (Journal article; Peer reviewed, 2017)
      There is a strong focus on new renewable energy sources, such as, solar power, wind energy and biomass, in the con-text of reducing carbon emissions. Because of its maturity, hydropower is often overlooked. However, there ...
    • Modelling of Water Levels in a Reservoir using Modelica 

      Meijer, Willem; Winkler, Dietmar (Journal article; Peer reviewed, 2020)
      The regulation of hydro power plants is influenced by amongst others reservoir capacity and the knowledge about how it is influenced by changes in in- and out?ow. The hydro power reservoir Aurdalsfjord has a small capacity ...
    • Modelling the synchronisation control for a hydro power controller 

      Hellborg, Jonatan; Tollefsen, Tonje; Bhusal, Khemraj; Winkler, Dietmar (Peer reviewed; Journal article, 2021)
      This paper presents the modelling of a synchronisation control as used inside a typical hydro power controller for small hydro power plants. It was built using the open-source modelling language Modelica by use of the ...
    • Modelling the System Dynamics of Islanding Asynchronous Generators 

      Edvardsen, Håkon Molland; Winkler, Dietmar (Journal article; Peer reviewed, 2014-03)
      Asynchronous generators are often used for small hydro power stations with an installed power capacity of under 1MW. The reason for this is their robustness and low cost. In order do be able to produce active electrical ...
    • Power System Stability Using Modelica 

      Øyvang, Thomas; Winkler, Dietmar; Lie, Bernt; Hegglid, Gunne John (Journal article; Peer reviewed, 2014-12-09)
      This paper is concerned with power system modeling using the Modelica language in comparison to a traditional simulation tool. Though most common power system simulation tools are computationally efficient and reasonably ...
    • Using MPC to Balance Intermittent Wind and Solar Power with Hydro Power in Microgrids 

      Pandey, Madhusudhan; Winkler, Dietmar; Sharma, Roshan; Lie, Bernt (Peer reviewed; Journal article, 2021)
      In a microgrid connected with both intermittent and dispatchable sources, intermittency caused by sources such as solar and wind power plants can be balanced by dispatching hydro power into the grid. Both intermittent ...
    • Version [OpenIPSL 2.0.0] - [iTesla Power Systems Library (iPSL): A Modelica library for phasor time-domain simulations] 

      de Castro, Marcelo; Winkler, Dietmar; Laera, Giuseppe; Vanfretti, Luigi; Dorado-Rojas, Sergio A.; Rabuzin, Tin; Mukherjee, Biswarup; Navarro, Manuel (Journal article; Peer reviewed, 2023)
      This paper describes Open-Instance Power System Library (OpenIPSL) version 2.0.0 and its most recent enhancements. This new version brings upgrades that include more robust models that are better documented, and example ...
    • Where impact got going 

      Tiller, Michael; Winkler, Dietmar (Journal article; Peer reviewed, 2015-09-18)
      This paper discusses the impact package manager. The primary goal of this project is to support the development of a healthy eco-system around Modelica. For many other languages, the existence of an easy to use package ...