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Hans Ivar Skjelbred

Seniorforsker

Hans Ivar Skjelbred

Seniorforsker

Hans Ivar Skjelbred
Telefon: 480 74 497
E-post:
Avdeling: Energisystemer
Kontorsted: Trondheim

Publikasjoner og ansvarsområder

Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=1836726

This paper investigates and discusses the current and future role of machine learning (ML) within the hydropower sector. An overview of the main applications of ML in the field of hydropower operations is presented to show the most common topics that have been addressed in the scientific literature ...

Forfattere Chiara Bordin Hans Ivar Skjelbred Jiehong Kong Zhirong Yang
År 2020
Type Vitenskapelig artikkel
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=1727605

Optimization tools are widely used for solving the short-term hydro scheduling (STHS) problem in a cascaded hydro system. In a mixed integer linear programming (MILP)-based formulation, the nonlinear and non-convex hydropower production function (HPF) is represented by piecewise linear approximation...

Forfattere Hans Ivar Skjelbred Jiehong Kong Olav B Fosso
År 2019
Type Vitenskapelig artikkel
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=1693536

In this paper we present in detail how to handle the nonlinear and state-dependent elements in the power consumption function (PCF) of a variable speed pump (VP). The function is formulated by piecewise linear approximations with dynamically specified breakpoints. In the proposed method, the head va...

Forfattere Jiehong Kong Hans Ivar Skjelbred Hubert Abgottspon
År 2019
Type Vitenskapelig artikkel
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=1693531

The purpose of short-term hydropower scheduling (STHS) in a competitive electricity market is to maximize the profit in the near future while adapting to the mid-term strategies for system operation. To ensure a realistic and feasible operation for STHS, it is crucial to accurately represent the hyd...

År 2019
Type Vitenskapelig artikkel
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=1673892

Ensuring the safe operation of hydropower stations is one of the key challenges for electric generation. Clearly the safe operation of such systems can only be archived with proper and effective maintenance scheduling. The objective of this study is to analyze, rank and prioritize the risk factors r...

Forfattere Beibei Xu Diyi Chen Huanhuan Li Keyun Zhuang Xiao Hu Jinwei Li Hans Ivar Skjelbred Jiehong Kong Edoardo Patelli
År 2019
Type Vitenskapelig artikkel
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=1763341

In this paper, we show how progressive hedging may be used to solve stochastic programming problems that involve cross-scenario inequality constraints. In contrast, standard stochastic programs involve cross-scenario equality constraints that describe the non-anticipative nature of the optimal solut...

År 2019
Type Vitenskapelig artikkel
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=1732788

As power systems grow reliant on large-scale integration of renewable energy sources, pumped-storage power stations are being called on to provide greater adjustment capabilities. This study focuses on the stability and fast–slow dynamics of a pump-turbine governing system (PTGS). First, the time de...

Forfattere Gongcheng Liu Diyi Chen Huanhuan Li Jiusan Ye Hao Zhang Jinyang Liu Hans Ivar Skjelbred Jiehong Kong
År 2019
Type Vitenskapelig artikkel
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=1755854

In this paper we investigate the use of marginal cost curves for bidding and offering electricity in a continuous intraday market. Due to the real-time nature of the market, trading decisions must be supported in a computationally efficient manner. Taking the view of a price-taking hydropower produc...

Forfattere Ane Frøyen Dideriksen Susanne Sekkesæter Stein-Erik Fleten Ellen Krohn Aasgård Hans Ivar Skjelbred
År 2019
Type Vitenskapelig Kapittel/Artikkel/Konferanseartikkel