Recent Submissions

  • Frequency stability issues and research opportunities in converter dominated power system 

    Shrestha, Ashish; Gonzalez-Longatt, Francisco (Journal article; Peer reviewed, 2021)
    Stable power supply has become a crucial thing in the current era of technology and automation. Although the power system has multiple stability issues and causes, frequency fluctuation plays a vital role in normal operation, ...
  • Challenges in the penetration of electric vehicles in developing countries with a focus on Nepal 

    Mali, Bijen; Shrestha, Ashish; Chapagain, Anish; Bishwokarma, Rajiv; Kumar, Pritam; Gonzalez-Longatt, Francisco (Peer reviewed; Journal article, 2021)
    With growing concerns of climate change and unreliable fuel market, the world is moving towards an electric-based transportation system, one that entails a country to overhaul major infrastructures, establish high monetary ...
  • A Bayesian Model to Forecast the Time Series Kinetic Energy Data for a Power System 

    Shrestha, Ashish; Ghimire, Bishal; Gonzalez-Longatt, Francisco (Journal article; Peer reviewed, 2021)
    With the massive penetration of electronic power converter (EPC)-based technologies, numerous issues are being noticed in the modern power system that may directly affect system dynamics and operational security. The ...
  • Time of use electricity pricing in power system planning and operation: Case study of Nepalese power system 

    Simkhada, Sunil; Niraula, Mani; Ojha, Prabesh Raj; Layalu, Yogesh; Singh, Ajay; Gwachha, Rakesh; Shrestha, Ashish (Journal article; Peer reviewed, 2021)
    The difference between load demand in the off-peak and peak period is usually high in the context of Nepal, and the highpeak load for a short time is the main reason for insufficiency in electricity, frequent electricity ...
  • Parametric sensitivity analysis of rotor angle stability indicators 

    Shrestha, Ashish; Gonzalez-Longatt, Francisco (Journal article; Peer reviewed, 2021)
    With the increasing penetration rate of Power Electronic Converter (PEC) based technologies, the electrical power systems are facing the problem of transient stability since the PEC based technologies do not contribute to ...
  • Parametric sensitivity analysis of rotor angle stability indicators: Simulation case 

    Shrestha, Ashish; Gonzalez-Longatt, Francisco (Journal article; Peer reviewed, 2021)
    Because power electronic converter (PEC) dominated power generators do not provide the rotational inertia and the proportion of synchronous generators is reducing, the modern electrical grids are confronting a challenge ...
  • Impact Study of Temperature on the Time Series Electricity Demand of Urban Nepal for Short-Term Load Forecasting 

    Rajbhandari, Yaju; Marahatta, Anup; Ghimire, Bishal; Shrestha, Ashish; Gachhadar, Anand; Thapa, Anup; Chapagain, Kamal; Korba, Petr (Journal article; Peer reviewed, 2021)
    Short-term electricity demand forecasting is one of the best ways to understand the changing characteristics of demand that helps to make important decisions regarding load flow analysis, preventing imbalance in generation ...
  • Evaluation of a LoRa Mesh Network for Smart Metering in Rural Locations 

    Marahatta, Anup; Rajbhandari, Yaju; Shrestha, Ashish; Singh, Ajay; Thapa, Anup; Gonzalez-Longatt, Francisco; Korba, Petr; Shin, Seokjoo (Peer reviewed; Journal article, 2021)
    Accompanying the advancement on the Internet of Things (IoT), the concept of remote monitoring and control using IoT devices is becoming popular. Digital smart meters hold many advantages over traditional analog meters, ...
  • Sustainability Awareness through STEAM+ 

    Timmerberg, Josef; Halvorsen, Hans-Petter; Viumdal, Håkon; Mylvaganam, Saba (Peer reviewed; Journal article, 2021)
    Innovative technology enterprises have been working closely with OECD countries to address issues related to sustainability. There are many acronyms associated with STEM, e.g. STEM+, incorporating the humanities, community ...
  • 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 ...
  • Exploring Feedback and Gamification in a Data Modeling Learning Tool 

    Dæhli, Olav; Kristoffersen, Bjørn; Lauvås, Per; Sandnes, Tomas (Peer reviewed; Journal article, 2021)
    Data modeling is an essential part of IT studies. Learning how to design and structure a database is important when storing data in a relational database and is common practice in the IT industry. Most students need much ...
  • Optimal Tuning of Active Power Gradient Control for Frequency Support in Multi-Energy Systems 

    Perilla, Arcadio; Gusain, Digvijay; Rueda, Jose Luis; Palensky, Peter; A. M. M. van der Meijden, Mart; Gonzalez-Longatt, Francisco (Chapter, 2020)
    Coping with severe active power imbalances constitutes a challenging task in low inertia multi-energy systems. The phase out of the majority of conventional power plants with large size synchronous generators entails that ...
  • Multi-Core Platform of Admittance Matrix Formation of Power Systems: Computational Time Assessment 

    Gonzalez-Longatt, Francisco; Montalvo, Martha Nohemi; Andrade, Manuel A.; Vazquez, Ernesto; Chamorro, Harold R.; Sood, Vijay K. (Chapter, 2020)
    This paper presents a comparison of computational time required to build the admittance matrix of five test systems (ranging from 200 to 70,000 nodes) considering two formation approaches: element-by-element and matrix ...
  • Fast Active Power-Frequency Support Methods by Large Scale Electrolyzers for Multi-Energy Systems 

    Veerakumar, Nidarshan; Ahmad, Zameer; Adabi, M. Ebrahim; Rueda, Jose Luis; A. M. M. van der Meijden, Mart; Palensky, Peter; Gonzalez-Longatt, Francisco (Chapter, 2020)
    This paper presents a comparative assessment of fast active power regulation (FAPR) control strategies implemented on megawatt-scale controllable electrolysers, with the goal of achieving enhanced frequency support during ...
  • Non-Synchronous Generation Impact on Frequency Response - A Case from Albania 

    Ago, Ersi; Chamorro, Harold; Alves, Erick Fernando; Gonzalez-Longatt, Francisco; Flores, Wilfredo C; Sood, Vijay K; Martinez, Wilmar (Chapter, 2020)
    Albanian electric power generation has been almost totally dependent on hydropower since its system inception. Within the past decade, although modest, there has been some share of power produced from Renewable Energy ...
  • Two-Level Optimisation and Control Strategy for Unbalanced Active Distribution Systems Management 

    Gonzalez-Longatt, Francisco; Alvarado-Barrios, Lazaro; Alvarez-Arrollo, Cesar; Escaño, Juan Manuel; Martinez-Ramos, Jose Luis (Peer reviewed; Journal article, 2020)
    This article proposes a new approach to the operation of unbalanced Active Distribution Systems (ADS) using an economic dispatch optimisation model for Active Distribution Systems Management (ADSM). The model proposes a ...
  • Model Based Early Kick/Loss Detection and Attenuation with Topside Sensing in Managed Pressure Drilling 

    Jinasena, Asanthi; Holta, Haavard H. F.; Jondahl, Morten Hansen; Welahettige, Prasanna Kumara Welahetti; Aamo, Ole Morten; Sharma, Roshan; Viumdal, Håkon; Lie, Bernt (Peer reviewed; Journal article, 2020)
    Early kick/loss detection is a crucial part of safe well control, and it plays a major role in the reduction of risk and non-productive time in drilling. In conventional drilling, topside sensing is used for early kick/loss ...
  • 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 ...
  • Off-field Testing of Grid Scenarios at Medium Voltage in Flexible AC Transmission Systems involving Wind Energy 

    Lorenzen, Helge; Timmerberg, Josef; Lüken, Tim; Mylvaganam, Saba (Chapter, 2020)
    As a result of the geographical location of north-western Germany, the local grid operator EWE NETZ has a pioneer role with respect to the integration of renewable energy sources in existing AC transmission systems. About ...
  • Under-Frequency Load Shedding in Mongolia: Simulation Assessment Considering Inertia Scenarios 

    Adiyabazar, Choidorj; Acosta Montalvo, Martha Nohemi; Gonzalez-Longatt, Francisco; Rueda Torres, Jose Luis; Palensky, Peter (Peer reviewed; Journal article, 2020)
    Mongolia power system (MPS) is evolving quite fast, and the integration of renewable resources (mainly wind power and solar photovoltaic) reached 20% by 2019. The MPS is interconnected to Russia in order to cover local ...

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