Browsing NTNU Open by Author "Farahmand, Hossein"
Now showing items 41-60 of 98
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Flexibility of controllable power transformers for managing wind uncertainty using robust adjustable linearised optimal power flow
Nikoobakht, Ahmad; Aghaei, Jamshid; Farahmand, Hossein; Lakshmanan, Venkatachalam; Korpås, Magnus (Journal article, 2019)As renewable energy sources (RESs) penetration increases in the power system, the transmission system operators face new challenges to ensure system reliability and flexibility while ensuring high utilisation of uncertain ... -
Flow-Based Market Coupling in Short-Term Hydro-Thermal Scheduling
Meberg, Torbjørn Røed (Master thesis, 2019)Flyten av kraft i det nordiske kraftsystemet er under endring, der det er en økning i produksjon fra fornybare energikilder i tillegg til en elektrifisering av ulike deler av industrisektoren, som forandrer sammensetningen ... -
Hybrid AC/DC-OPF ADMM model for TSO coordination with multiple DSOs in Flexibility Market
Ivanko, Dmytro; Vågane, Ine Solsvik; Hashemipour, Seyed Naser; Oleinikova, Irina; Crespo del Granado, Pedro Andres; Farahmand, Hossein (Peer reviewed; Journal article, 2022)Unlocking potential from flexibility assets is an effective way to address power grid challenges. Proper coordination between transmission and distribution system operators (TSO and DSOs) is key to achieving this goal. ... -
A hybrid method for day-ahead photovoltaic power forecasting based on generative adversarial network combined with convolutional autoencoder
Pan, Xueping; Zhou, Jieyang; Sun, Xiaorong; Cao, Yang; Cheng, Xiaomei; Farahmand, Hossein (Peer reviewed; Journal article, 2022)Photovoltaic (PV) generation has high impact on the decarbonization pathways of power systems. Accuracy of day-ahead PV power forecasting has become crucial in the operation and control of power system with high PV ... -
Hydrothermal scheduling in the continuous-time framework
Naversen, Christian Øyn; Helseth, Arild; Li, Bosong; Parvania, Masood; Farahmand, Hossein; Catalao, João P.S. (Peer reviewed; Journal article, 2020)Continuous-time optimization models have successfully been used to capture the impact of ramping limitations in power systems. In this paper, the continuous-time framework is adapted to model flexible hydropower resources ... -
The impact of degradation on the investment and operation of a community battery for multiple services
Berg, Kjersti; Bjarghov, Sigurd Nikolai; Rana, Rubi; Farahmand, Hossein (Chapter, 2022)The emergence of local energy communities (LECs) introduces new concepts and dynamics to the operations of distribution grids. An important part of LECs is the shared ownership or control of assets such as photovoltaic ... -
Impact of EV Integration and Fast Chargers in a Norwegian LV Grid - An analysis based on data from a residential grid in Steinkjer
Lillebo, Martin (Master thesis, 2018)Given a renewable power supply, the replacement of conventional vehicles with electric alternatives has the potential to significantly reduce climate gas emissions from the transport sector. Norway has implemented economic ... -
The impact of Flow-Based Market Coupling on the Nordic region
Bø, Andreas Hovde; Kallset, Vegard Viken; Oleinikova, Irina; Farahmand, Hossein; Refsnæs, Karl Ludvig (Peer reviewed; Journal article, 2020)The primary objective of capacity calculation is to reflect physical transmission limits in the power grid into limits on commercial trades at the electricity markets. The Nordic capacity calculation methodology is currently ... -
Impact of inertial response requirements on a multi area renewable network
Löschenbrand, Markus; Farahmand, Hossein; Korpås, Magnus (Chapter, 2017)Developments in renewable integration are continuously changing power system portfolios globally. Higher volatility of the networks might pose a threat to grid stability and thus increase the need for ancillary services. ... -
Impact of large-scale EV integration and fast chargers in a Norwegian LV grid
Lillebo, Martin; Zaferanlouei, Salman; Zecchino, Antonio; Farahmand, Hossein (Journal article; Peer reviewed, 2019)Norway has implemented economic incentives over several years to encourage a transition from conventional vehicles to electric vehicles (EVs), and now has the largest share of EVs per capita in the world. In this study, ... -
The impact of uncertainty and time structure on optimal flexibility scheduling in active distribution networks
Kara, Güray; Pisciella, Paolo; Tomasgard, Asgeir; Farahmand, Hossein (Journal article; Peer reviewed, 2021)The authors focus on a model for system operators that uses centralized scheduling of multiple flexibility assets and services to minimize the cost of managing problems with grid congestion, voltages, and losses. The model ... -
Integrated Power System Balancing in Northern Europe - Models and Case Studies
Farahmand, Hossein (Doctoral Theses at NTNU, 1503-8181; 2012:150, Doctoral thesis, 2012)Maintaining a continuous balance between generation and load is crucial for the safeguarding of the power systems. In order to effectively deal with the various uncertainties that contribute to the real-time imbalance in ... -
Integration of PEV and PV in Norway Using Multi-Period ACOPF — Case Study
Zaferanlouei, Salman; Korpås, Magnus; Farahmand, Hossein; Vadlamudi, Vijay Venu (Chapter; Peer reviewed, 2017)Integration of Plug-in Electric Vehicles (PEVs) and renewables poses substantial challenges in electricity distribution networks. This paper investigates the impact of large-scale PEV penetration in distribution networks, ... -
Large-scale Offshore Wind Development and Decarbonization Pathways of the Norwegian Energy System
Reulein, Dana; Tiwari, Shweta; Hestvik, Birk; Kvannli, Aleksander; Pinel, Dimitri; Andresen, Christian Andre; Farahmand, Hossein (Chapter; Conference object, 2023)Modelling of the energy system in the countries surrounding the North Sea is performed with a focus on Norway and offshore wind farms situated in the North Sea. The geographically heterogeneous consumption and production ... -
Long-term operational planning for flexible residential buildings with seasonal storage and capacity-based grid tariffs
Thorvaldsen, Kasper Emil; Backe, Stian; Farahmand, Hossein (Peer reviewed; Journal article, 2024)When performing operation of the energy system in a building, it is difficult to accurately represent the uncertain long-term objectives in the short-term window, and the correlation between long-term objectives. This work ... -
A Long-term Strategy Framework for Flexible Energy Operation of Residential Buildings
Thorvaldsen, Kasper Emil (Doctoral theses at NTNU;2022:251, Doctoral thesis, 2022)Within the European power system, the electricity mix is experiencing more presence of variable power production due to the green shift. This shift causes increased need for flexibility measures to combat instability, which ... -
Long-term Value of Flexibility from Flexible Assets in Building Operation
Thorvaldsen, Kasper Emil; Korpås, Magnus; Farahmand, Hossein (Peer reviewed; Journal article, 2022)In this work, we investigate how flexible assets within a residential building influence the long-term impact of operation. We use a measured-peak grid tariff (MPGT) that puts a cost on the highest single-hour peak import ... -
Methods for assessing the value of flexibility in distribution grids
Korpås, Magnus; Farahmand, Hossein; Del Granado, Pedro Crespo; Ottesen, Stig Ødegaard; Olivella, Pol; Lloret, Pau (Research report, 2017) -
Methods for Cost Allocation Among Prosumers and Consumers Using Cooperative Game Theory
Tveita, Elise (Master thesis, 2018)The decarbonization of the power sector is at the core of the transition to a sustainable energy future. In parallel with the growth in renewables, the costs of solar photovoltaic (PV) and electrical energy storage (EES) ... -
Model Development for coordination of flexibility resources in grid connected Local Energy Communities
Pedersen, Jørgen Kipperberg (Master thesis, 2022)De siste tiårene har det vært en rask økning i mengden ikke regulerbare energiressurser i den europeiske kraftmiksen, noe som har ført til et behov for nye måter å kontrollere kraftmarkedet på. Disse nye kraftressursene ...