To main content

Hans Ivar Skjelbred

Research Scientist

Hans Ivar Skjelbred

Research Scientist

Hans Ivar Skjelbred
Phone: 480 74 497
Department: Energy Systems
Office: Trondheim

Publications and responsibilities

Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+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...

Authors Kong Jiehong Skjelbred Hans Ivar Abgottspon Hubert
Year 2019
Type Journal publication
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+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...

Year 2019
Type Journal publication
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+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...

Authors Xu Beibei Chen Diyi Li Huanhuan Zhuang Keyun Hu Xiao Li Jinwei Skjelbred Hans Ivar Kong Jiehong Patelli Edoardo
Year 2019
Type Journal publication
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1626962

The paper proposes a method for modelling tunnel network flow between reservoirs and creeks above hydro power plants in short term hydro optimization. A method for handling pressure constraints in nodes in the tunnel network is also included. The method is applied on a plant below a reservoir and a ...

Authors Aaslid Per Skjelbred Hans Ivar Bale Sigri Scott
Year 2019
Type Part of a book/report
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1607160

In this paper, we introduce an operational implementation of a hydropower simulator for cascaded river systems. It is presently used for decision support in the intraday re-planning by the largest hydropower producer in Norway. It simulates the hydro production at a highly detailed level with very f...

Year 2018
Type Part of a book/report
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1454798

In deregulated electricity markets, hydropower producers must bid their production into the day-ahead market. For price-taking producers, it is optimal to offer energy according to marginal costs, which for hydropower are determined by the opportunity cost of using water that could have been stored ...