• Assessment of Under-Frequency Load Shedding in Mongolia Considering Inertia Scenarios 

      Adiyabazar, Choidorj; Acosta Montalvo, Martha Nohemi; Gonzalez-Longatt, Francisco; Rueda Torres, Jose Luis; Palensky, Peter (Chapter, 2020)
      The Mongolian power system (MPS) has been changing in recent years mainly by the integration of wind power and solar photovoltaic sources which until 2019 has been reached a 20% of the total generation sources. The ...
    • 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 ...
    • 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 ...
    • Data-Driven Trajectory Prediction of Grid Power Frequency Based on Neural Models 

      Chamorro, Harold R.; Orjuela-Cañón, Alvaro D.; Ganger, David; Mattias, Persson; Gonzalez-Longatt, Francisco; Alvarado-Barrios, Lazaro; Sood, Vijay K.; Martinez, Wilmar (Peer reviewed; Journal article, 2021)
      Frequency in power systems is a real-time information that shows the balance between generation and demand. Good system frequency observation is vital for system security and protection. This paper analyses the system ...
    • Descriptive Statistical Analysis of Frequency control-related variables of Nordic Power System 

      Acosta Montalvo, Martha Nohemi; Andrade, Manuel A.; Vazquez, Ernesto; Sanchez, Francisco; Gonzalez-Longatt, Francisco; Rueda Torres, Jose Luis (Peer reviewed; Journal article, 2020)
      This paper presents a descriptive statistical analysis (DSA) of time-series of electro-mechanical quantities related to the frequency control (e.g. kinetic energy (KE), electrical frequency and power demand) of the Nordic ...
    • 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, ...
    • FAPI Controller for Frequency Support in Low-Inertia Power Systems 

      Rakhshani, Elyas; Perilla, Arcadio; Rueda Torres, Jose Luis; Gonzalez-Longatt, Francisco; Batista Soeiro, Thiago; van der Meijden, Mart A. M. M. (Journal article, 2020)
      This paper presents different forms of Fast Active Power Injection (FAPI) control schemes for the analysis and development of different mitigation measures to address the frequency stability problem due to the growth of ...
    • 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 ...
    • Fault Location in a VSC-HVDC Link Using Neural Networks 

      Páramo Balsa, Paula; Roldán Fernández, Juan Manuel; Gonzalez-Longatt, Francisco; Burgos Payán, Manuel; Riquelme Santos, Jesús (Journal article, 2020)
      High-voltage direct current (HVDC) using voltage source converter (VSC) in transmission systems applications are currently a competitive alternative to the traditional AC transmission systems, especially for offshore wind ...
    • Framework for Real-Time Simulation of Hardware in the Loop Applied to Primary Frequency Control 

      Barrios-Gomez, J.A.; Sanchez, Francisco; Gianfranco, Claudio; Gonzalez-Longatt, Francisco; Acosta Montalvo, Martha Nohemi; Denysiuk, Serhii; Strelkova, Halyna (Chapter, 2020)
      This research paper proposes a framework to perform (hardware in the loop) HIL simulation in real-time (RT), the framework includes steps for the formulation of the Target RT Computer and Open Source System, which are ...
    • 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, ...
    • Frequency Support of Fast-Multi-Energy Storage Systems in Low Rotational Inertia Scenarios 

      Ersdal, Anne Mai; Acosta Montalvo, Martha Nohemi; Gonzalez-Longatt, Francisco; Rueda Torres, Jose Luis; Palensky, Peter (Chapter, 2020)
      Modern power systems are increasing the connection of power electronic converters (PECs), and new inertia-less technologies displace the synchronous generation units. Therefore, the total rotational system inertia is ...
    • Improvement of the Frequency Response Indicators by Optimal UFLS Scheme Settings 

      Acosta Montalvo, Martha Nohemi; Andrade, Manuel A.; Vazquez, Ernesto; Adiyabazar, Choidorj; Gonzalez-Longatt, Francisco; Torres, Jose Luis Rueda; Palensky, Peter (Peer reviewed; Journal article, 2020)
      This research investigates the positive changes in the system frequency response indicators caused by the implementation of a set of optimal settings of an under-frequency load shedding (UFLS) scheme. The optimal under-frequency ...
    • Innovative primary frequency control in low‐inertia power systems based on wide‐area RoCoF sharing 

      Chamorro, Harold R.; Segundo Sevilla, Felix Rafael; Gonzalez-Longatt, Francisco; Rouzbehi, Kumars; Chavez, Hector; Sood, Vijay K. (Journal article, 2020)
      Future plans for integration of large non-synchronous generation and the expansion of the power system in the Nordic countries are a concern to transmission system operators due to the common interconnections and electricity ...
    • Interleaved high gain DC-DC converter for integrating solar PV source to DC bus 

      Sri Revathi, B; Mahalingam, Prabhakar; Gonzalez-Longatt, Francisco (Peer reviewed; Journal article, 2019)
      In this paper, a novel non-isolated DC-DC converter topology is proposed for solar photovoltaic (PV) application. The proposed converter is constructed from an interleaved boost converter (IBC) to reduce the input current ...
    • 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 ...
    • 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 ...
    • On the Optimization of Damping Enhancement in a Power System with a Hybrid HVDC Link 

      Chamorro, Harold; Torkzadeh, Roozbeh; Kotb, Omar; Rouzbehi, Kumars; Escaño, Juan Manuel; Gonzalez-Longatt, Francisco; Bellmunt, Oriol Gomis; Toma, Lucian; Sood, Vijay K (Chapter, 2019)
      Hybrid HVDC links incorporate both Line Commutated Converters (LCC) and Voltage Source Converters (VSC) systems, thereby gathering the benefits of both technologies. Supplementary Power Oscillation Damping (POD) controllers ...
    • Optimal Frequency Support of Variable-Speed Hydropower Plants at Telemark and Vestfold, Norway: Future Scenarios of Nordic Power System 

      Acosta Montalvo, Martha Nohemi; Pettersen, Daniel; Gonzalez-Longatt, Francisco; Peredo Argos, Jaime; Andrade, Manuel A. (Peer reviewed; Journal article, 2020)
      The integration of renewable resources is quickly growing in the Nordic power system (NPS), and it has led to increasing challenges for the operation and control of the NPS. Nordic countries require that the first-generation ...
    • Optimal Settings of Fast Active Power Controller: Nordic Case 

      Acosta Montalvo, Martha Nohemi; Gonzalez-Longatt, Francisco; Denysiuk, Serhii; Strelkova, Halyna (Chapter, 2020)
      The Nordic power system is continuously changing, and it has been experiencing a growing replacing of conventional power plants with renewable power plants, this together with other factors are causing reduction of the ...