Browsing NTNU Open by Author "Zhang, Hongyu"
Now showing items 1-9 of 9
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Decarbonizing the European energy system in the absence of Russian gas: Hydrogen uptake and carbon capture developments in the power, heat and industry sectors
Durakovic, Goran; Zhang, Hongyu; Knudsen, Brage Rugstad; Tomasgard, Asgeir; Crespo del Granado, Pedro Andres (Peer reviewed; Journal article, 2023)Hydrogen and carbon capture and storage are pivotal to decarbonize the European energy system in a broad range of pathway scenarios. Yet, their timely uptake in different sectors and distribution across countries are ... -
Decomposition methods for multi-horizon stochastic programming
Zhang, Hongyu; Grossmann, Ignacio E.; Tomasgard, Asgeir (Journal article; Peer reviewed, 2024)Multi-horizon stochastic programming includes short-term and long-term uncertainty in investment planning problems more efficiently than traditional multi-stage stochastic programming. In this paper, we exploit the block ... -
Integrating Tactical Hydropower Planning into EMPIRE: A Node Formulation Approach
Drillestad, Kristian Ørndal; Ulsaker, Elin; Winberg, Halvor Nymoen (Master thesis, 2024)EU har satt ambisiøse klimamål for 2050 for å redusere de negative effektene av menneskeskapte klimagassutslipp og sikre at Europas kraftsystem i hovedsak består av fornybar energi. For å hjelpe beslutningstakere med denne ... -
Investment planning under uncertainty in energy systems: Modelling and algorithms
Zhang, Hongyu (Doctoral theses at NTNU;2024:21, Doctoral thesis, 2024)This thesis applies operational research methods for the investment planning of energy systems under uncertainty for the energy transition. We develop new models and solution methods. On the modelling side, we first ... -
Modelling and analysis of offshore energy hubs
Zhang, Hongyu; Tomasgard, Asgeir; Knudsen, Brage Rugstad; Svendsen, Harald Georg; Bakker, Steffen J.; Grossmann, Ignacio E. (Peer reviewed; Journal article, 2022)Clean offshore energy hubs may become pivotal for efficient offshore wind power generation and distribution. In addition, offshore energy hubs may provide decarbonised energy supply for maritime transport, oil and gas ... -
Navigating Uncertainty - Stochastic Energy Planning in a European Context
Heir, Erlend; Nisi, Asbjørn (Master thesis, 2024)For å nå målene om netto null utslipp og klimanøytralitet innen 2050, er det behov for store omstillinger i det europeiske energisystemet. Denne overgangen innebærer betydelige investeringer innen fornybar energiproduksjon ... -
Offshore Energy Hubs in the Decarbonisation of the Norwegian Continental Shelf
Zhang, Hongyu; Tomasgard, Asgeir; Knudsen, Brage Rugstad; Grossmann, Ignacio E. (Chapter, 2022)This paper studies the investment planning of a decarbonised Norwegian continental shelf energy system considering the connection and interfaces with the European energy system. A multi-horizon stochastic mixed-integer ... -
A stabilised Benders decomposition with adaptive oracles for large-scale stochastic programming with short-term and long-term uncertainty
Zhang, Hongyu; Mazzi, Nicolò; McKinnon, Ken; Nava, Rodrigo Garcia; Tomasgard, Asgeir (Peer reviewed; Journal article, 2024)Benders decomposition with adaptive oracles was proposed to solve large-scale optimisation problems with a column-bounded block-diagonal structure, where subproblems differ only in the right-hand side and cost coefficients. ... -
Stochastic Short-Term Optimization of Energy Systems with Offshore Hydrogen Production
Falk, Eivind Andreas; Hansen, Frederik Løkka (Master thesis, 2023)Fornybare energikilder utgjør kjernen av fremtidens energisystem. Verdikjeder av hydrogen vil spille en avgjørende rolle i integreringen av fornybar kraft, men vil også ha nytte som råstoff, drivstoff og energibærer på ...