Browsing NTNU Open by Author "Helseth, Arild"
Now showing items 1-20 of 35
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A Case Study on Medium-Term Hydropower Scheduling with Sales of Capacity
Hjelmeland, Martin N.; Helseth, Arild; Korpås, Magnus (Peer reviewed; Journal article, 2016)This paper conducts a case study on hydropower scheduling considering sales of capacity reserves and impacts of detailed mod-elling. In latter years a growing demand for reserve capacity has been needed to ensure stable ... -
A Parallel Solution to Large Scale Hydropower Scheduling - By reducing the number of synchronization points in the Stochastic Dual Dynamic Programming (SDDP) Algorithm
Braaten, Hallvard (Master thesis, 2014)Stochastic dual dynamic programming (SDDP) has become a popular algorithm used in practical long-term scheduling of hydro power systems. The SDDP algorithm is significantly more computationally demanding than most ... -
Accounting for reserve capacity activation when scheduling a hydropower dominated system
Naversen, Christian Øyn; Farahmand, Hossein; Helseth, Arild (Journal article; Peer reviewed, 2020)As the penetration of variable renewable power generation increases in power systems around the world, system security is challenged. It is crucial to coordinate the available flexible generating resources, such as hydropower, ... -
Analysing the Impact of 30 GW Offshore Wind Power in Norway using the Market Model FanSi
Medhus, Kari (Master thesis, 2023)I mai 2022 la den norske regjeringen frem en plan om å identifisere områder for 30 GW havvind innen 2040. Det ambisiøse havvind-initiativet vil betydelig øke Norges grønne energiproduksjon, noe som vil resultere i en mer ... -
Analysis of Power System Scenarios for Norway 2030 using the Fundamental Market Model FanSi
Ljøkjel, Mathilde Klungland; Jeyaseelarajah, Amaleen (Master thesis, 2022)Det siste tiåret har Norges rolle i det Europeiske kraftmarkedet vært omdiskutert. Det har vært en enorm økning i Norske strømpriser det siste året grunnet lave vannstander i magasinene i tillegg til at Norge er koblet på ... -
Analysis of Power System Scenarios for Norway 2030 using the Fundamental Market Model FanSi
Jeyaseelarajah, Amaleen; Ljøkjel, Mathilde Klungland (Master thesis, 2022)Det siste tiåret har Norges rolle i det Europeiske kraftmarkedet vært omdiskutert. Det har vært en enorm økning i Norske strømpriser det siste året grunnet lave vannstander i magasinene i tillegg til at Norge er koblet på ... -
Assessing the benefits of exchanging spinning reserve capacity within the hydro-Dominated nordic market
Helseth, Arild; Haugen, Mari; Farahmand, Hossein; Mo, Birger; Jaehnert, Stefan; Stenkløv, Inge (Peer reviewed; Journal article, 2021)This paper presents a hydrothermal scheduling toolchain suitable for detailed studies of procurement of spinning reserves in the hydro-dominated Nordic power system. The toolchain combines a long-term model to find the ... -
Continuous Hydrothermal Flexibility Coordination Under Wind Power Uncertainty
Naversen, Christian Øyn; Parvania, Masood; Helseth, Arild; Farahmand, Hossein (Peer reviewed; Journal article, 2022)This paper develops a stochastic continuous-time optimization model for coordinating the operation of flexibility in a hybrid hydro-thermal-wind power system. The developed model gives insight for investigating the short-term ... -
Continuous-time scheduling of a hydrothermal system with integration of offshore wind power
Øvstebø, Mari Lund; Naversen, Christian Øyn; Helseth, Arild; Farahmand, Hossein (Chapter, 2020)In this work, a continuous-time unit commitment formulation of a hydrothermal system with integration of offshore wind power is used to model the North European system operation. The cost of covering the structural imbalances ... -
Day-ahead inflow forecasting using causal empirical decomposition
Yousefi, Mojtaba; Cheng, Xiaomei; Gazzea, Michele; Wierling, August Hubert; Rajasekharan, Jayaprakash; Helseth, Arild; Farahmand, Hossein; Arghandeh, Reza (Peer reviewed; Journal article, 2022)It is essential to have accurate and reliable daily-inflow forecasting to improve short-term hydropower scheduling. This paper proposes a Causal multivariate Empirical mode Decomposition (CED) framework as a complementary ... -
Economic analysis of large-scale pumped storage plants in Norway
Henden, Arild Lothe; Doorman, Gerard L.; Helseth, Arild (Peer reviewed; Journal article, 2016)The European power system needs to develop mechanisms to compensate for the reduced predictability and high variability that occur when integrating renewable energy. Construction of pumped storage plant (PSP) is a solution. ... -
Environmental Constraints in Seasonal Hydropower Scheduling - Survey and Feasibility
Helseth, Arild (HydroCen Report;12, Research report, 2019)The work documented in this report has been carried out in project WP3.4 in the HydroCen research center. We have surveyed the need for improved modelling of environmental and technical constraints related to operational ... -
Environmental constraints in stochastic hydropower scheduling for long planning horizons
Schäffer, Linn Emelie (Doctoral theses at NTNU;2023:211, Doctoral thesis, 2023)The transformation of the European power system to a climate-friendly one by 2050 involves a shift from fossil fuel generation to renewable energy sources. As a part of this transition, flexible assets are needed to balance ... -
Environmental measures impact on hydro power system (FlexMet)
Helseth, Arild (HydroCen brief;Nr. 11, Report, 2022) -
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 ... -
Fundamental Multi-Product Price Forecasting in Power Markets
Jaehnert, Stefan; Helseth, Arild; Naversen, Christian Øyn (SINTEF Rapport;, Research report, 2019)This report has been prepared in the first phase of the project 'Pricing Balancing Services in the Future Nordic Power Market1, and its purpose is two-fold. First, a review on expected future trends in European power markets ... -
Hydro-Thermal Multi-Market Optimization
Nordén, Siri Hartvedt (Master thesis, 2019)Fundamental optimering av kraftsystemet er essensielt for å anskaffe korrekt beslutningsstøtte for investeringer og for optimal drift av kraftsystemet. Med en økt andel av ukontrollerbare energikilder og utfasing av kull ... -
Hydropower Scheduling with State-Dependent Discharge Constraints: An SDDP Approach
Helseth, Arild; Mo, Birger; Hågenvik, Hans Olaf; Schäffer, Linn Emelie (Peer reviewed; Journal article, 2022)Environmental constraints in hydropower systems serve to ensure sustainable use of water resources. Through accurate treatment in hydropower scheduling, one seeks to respect such constraints in the planning phase while ... -
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 ... -
Impact of Modelling Details on the Generation Function for a Norwegian Hydropower Producer
Hjelmeland, Martin N.; Helseth, Arild; Korpås, Magnus (Journal article; Peer reviewed, 2018)In the following work the generation function relating water discharge to power output for a hydropower station is considered. The conventional approach to modelling the generation function has been to simplify it as a ...