Browsing SINTEF Open by Author "Torres Olguin, Raymundo E."
Now showing items 1-14 of 14
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Effect of Including Transient Virtual Impedance in Droop-Controlled Microgrids
Göthner, Fredrik T. B. W.; Midtgård, Ole-Morten; Torres Olguin, Raymundo E.; D'Arco, Salvatore (Chapter; Peer reviewed, 2018)Droop control has shown promising results for decentralized power sharing in microgrids. However, the basic scheme can suffer from unequal reactive power sharing power due to differing line impedances between converters ... -
Effect of Reactive Power Characteristic of Offshore Wind Power Plant on Low-Frequency Stability
Zhou, Weihus; Wang, Yanbo; Torres Olguin, Raymundo E.; Chen, Zhe (Journal article; Peer reviewed, 2020)Oscillation phenomena of offshore wind power plant (OWPP)in a wide frequency range can be caused due to impedance interactions between grid-connected inverters (GCIs) and transmission cables. In this paper, impedance model ... -
Electromagnetic Oscillation Origin Location in Multiple-Inverter-Based Power Systems Using Components Impedance Frequency Responses
Zhou, Weihua; Torres Olguin, Raymundo E.; Zadeh, Mehdi; Bahrani, Behrooz; Wang, Yanbo; Chen, Zhe (Peer reviewed; Journal article, 2021)Existing impedance-based stability criterion (IBSC) for electromagnetic stability assessment of multiple-grid-connected-inverter (GCI)-based power systems suffers from several limitations. First, global stability feature ... -
Grid Integration of offshore wind farms using a Hybrid HVDC composed by an MMC with an LCC-based transmission system
Torres Olguin, Raymundo E.; Garces, Alejandro (Peer reviewed; Journal article, 2017)This paper presents a hybrid HVDC-transmission system composed by a Full-Bridge Modular Multilevel Converter (FB-MMC) and a Line-commutated Converter (LCC) from the grid integration of offshore wind farms. The operational ... -
Hardware-in-the-Loop platform based on Smart Meters for Demonstrating Advanced Distribution Management Systems
Sanchez Acevedo, Santiago; Torres Olguin, Raymundo E.; Ljøkelsøy, Kjell; Gundersen, Tore (Chapter; Peer reviewed, 2024)As the number of distributed energy resources grows, distribution system operators are facing significant challenges in monitoring and controlling their distribution networks. This evolution of the distribution power grid ... -
Investigation on Fault-ride through Methods for VSC-HVDC Connected Offshore Wind Farms
Sun, Wenye; Torres Olguin, Raymundo E.; Anaya-Lara, Olimpo (Journal article; Peer reviewed, 2016)This paper proposes a novel fault-ride through method for offshore wind farms connected to grid through a voltage source converter (VSC)-based high voltage direct current (HVDC) transmission. The proposed method introduces ... -
A Model-Based Controller for an Isolated Inverter for Electric Vehicle Applications
Valdez-Fernandez, Andres A.; Gutierrez-Robles, Eduardo A.; Escobar, Gerardo; Torres Olguin, Raymundo E. (Chapter; Peer reviewed, 2023)This paper proposes a model-based controller for a state-of-the-art isolated inverter, with the aim to provide a low THD true-sine wave (TSW) single-phase voltage to feed auxiliary loads in EV applications, which is a ... -
Novel Control Approach for a Hybrid Grid-Forming HVDC Offshore Transmission System
Tian, Shangen; Campos-Gaona, David; Lacerda, Vinicius A.; Torres Olguin, Raymundo E.; Anaya-Lara, Olimpo (Peer reviewed; Journal article, 2020)This article describes a hybrid topology of high-voltage direct current (HVDC) for offshore wind farms using a series connection of a voltage source converter (VSC) and six-pulse diode rectifier (6P-DR). In this topology, ... -
Power-hardware-in-the-loop approach for emulating an offshore wind farm connected with a VSC-based HVDC
Torres Olguin, Raymundo E.; Endegnanew, Atsede Gualu; D'Arco, Salvatore; Morel, Adrien (Chapter, 2017)The real-world interaction of an offshore wind farm with an HVDC is complex due issues such as noise, randomness of event timings, and hardware design issues that are not well explored. Numerical simulations are widely ... -
Rethinking Distribution Network Operational Planning with Flexibility Resources
Torres Olguin, Raymundo E.; Sperstad, Iver Bakken; Rana, Rubi; Jakobsen, Sigurd Hofsmo; Degefa, Merkebu Zenebe; Vist, Gunnar; Eliassen, Mathias F.; Sloth, Bjørn; Vatne, Åshild; Bergfjord, Line (Chapter; Peer reviewed, 2024)The transition to active distribution grids necessitates reevaluating planning and operation processes, where they are no longer considered independent. So, operational planning emerges as the crucial link to navigate the ... -
A Robust Circuit and Controller Parameters Identification Method of Grid-Connected Voltage Source Converters Using Vector Fitting Algorithm
Zhou, Weihua; Torres Olguin, Raymundo E.; Göthner, Fredrik T. B. W.; Beerten, Jef; Zadeh, Mehdi; Wang, Yanbo; Chen, Zhe (Peer reviewed; Journal article, 2021)This article presents a vector fitting (VF) algorithmbased robust circuit and controller parameters identification method for grid-connected voltage source converters (VSCs). The dq-domain impedance frequency responses ... -
Technology perspectives of the North Sea Offshore and storage Network (NSON)
Vrana, Til Kristian; Torres Olguin, Raymundo E. (SINTEF Energi. Rapport;TR A7490, Research report, 2015)This report contains an overview over the most relevant technologies for realising an offshore power system in the North Sea. Also electric energy storage technologies are being considered, as these may be built offshore ... -
Virtual Impedance Design for Power Quality and Harmonic Sharing Improvement in Microgrids
Göthner, Fredrik T. B. W.; Midtgård, Ole-Morten; Torres Olguin, Raymundo E.; Roldan-Pérez, Javier (Chapter; Peer reviewed, 2019)One of the main challenges of decentrally operated islanded microgrids has been proper harmonic sharing for parallel connected inverters. This is largely affected by differences in the feeder impedances of the inverters. ... -
A wave-to-wire model for grid integration studies of oscillating-body wave energy converters
Garcia Rosa, Paula Bastos; Torres Olguin, Raymundo E.; Cruz, João; D'Arco, Salvatore (Chapter; Peer reviewed, 2022)Wave energy converters (WECs) are still at an earlier stage of development when compared to variable renewable energy systems based on wind or solar power. Indeed, only a few WECs have exported power to electric grids until ...