Blar i Publikasjoner fra CRIStin - SINTEF Energi på dokumenttype "Chapter"
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Comparing Three Methods for Design Analyses of Rankine Cycle for Waste Heat Recovery from Natural Gas Compression
(Science et technique du froid;2020-1, Chapter; Peer reviewed, 2020)This study applies three methods for design of Rankine cycles utilizing waste heat in the oil and gas industry. The methods differ in the level of detail of heat exchanger model applied and in the flexibility with respect ... -
Comparison between synthetic ester and mineral oil impregnated transformer paper aging markers
(Proceedings of IEEE International Conference on Dielectric Liquids;, Chapter; Peer reviewed, 2017)For transformers in service, aging markers from cellulose in oil such as furans, water, methanol and acids are measured for diagnostic purposes. The content of these indicators, measured in oil, may therefore vary with ... -
Comparison of Offline VLF PD Measurements and Online PD Measurements on a 50-Year-Old Hydrogenerator Stator in Norway
(Chapter; Peer reviewed, 2018)Stator winding insulation is the part of the hydrogenerator experiencing the highest number and the most damaging failures. Partial discharge (PD) measurement, both offline and online, are commonly used for condition ... -
Comparison of Rankine cycle and trilateral flash cycle for power production from low temperature heat sources
(Science et technique du froid;2018-3, Chapter; Peer reviewed, 2018) -
Compilation of Development Metrics Applicable to Wave Energy Converters (WECs): Current Status and Proposed Next Steps
(ISOPE - International Offshore and Polar Engineering Conference. Proceedings;33, Chapter; Peer reviewed, 2023)As for any novel technology, the need to consider, identify and formulate performance requirements and related assessment criteria has been an important subject in the development of Wave Energy Converters (WECs). These ... -
A Comprehensive Simulator for Hydropower Investment Decisions
(Chapter; Peer reviewed, 2022)Due to a higher share of power production from renewable sources with high short-term variation, hydro systems must more often operate closer to their components' physical limits. To simulate system behaviour, a hydropower ... -
Condition Assessment of Hydrogenerator Stator Bar Insulation Using Partial Discharge Measurements
(Chapter; Peer reviewed, 2018)This paper presents results from laboratory measurements of partial discharge (PD) activity in 50 cm long samples cut from the mainwall section of old hydrogenerator stator bars. All stator bars were manufactured in 1976 ... -
Consequences for Residential customers when changing from energy based to capacity based tariff structure in the distribution grid
(Chapter; Peer reviewed, 2017)This paper presents the trends towards capacity based grid tariffs and results from a work analysing the consequences different grid tariffs will have for residential customers, based on their consumption profile. The ... -
Consequences of Uncertainty from Intraday Operations to a Capacity Expansion Model of the European Power System
(International Conference on the European Energy Market;2023, Chapter; Peer reviewed, 2023)The European Energy Transition envisions a high deployment of variable renewable energy sources (VRES) by 2050. Some estimates expect that 60-to-70% of power generation will be entirely covered by VRES technologies (i.e., ... -
Considering flexibility in network expansion planning: present practices and regulatory conditions
(International Conference on the European Energy Market;2020, Chapter; Peer reviewed, 2020)There are strong regulatory signals prompting European system operators to consider flexible resources as an active subject in the grid expansion planning. The present paper is based on the first results from H2020 project ... -
Contraction Analysis for a MMC Converter
(Chapter; Peer reviewed, 2019)One of the present barriers to the widespread use of Modular Multilevel Converters (MMC) is the complexity of its control. We use a suitable degree of simplifications of the MMC converters, under given conditions, to allow ... -
Control Strategies for Variable Speed Operation of Pumped Storage Plants with Full-size Converter Fed Synchronous Machines
(Chapter; Peer reviewed, 2021)The full-size converter fed synchronous machine (CFSM) for variable speed operation of a pumped storage power plant exhibits multiple advantages over the state-of-the-art Doubly Fed Induction Machine (DFIM) technology. The ... -
Coordinated Voltage Support with Reactive Power from High-power Charging Stations for EVs
(Chapter; Peer reviewed, 2021)High-power charging stations have recently drawn the attention of many researchers and electric vehicle (EV) infrastructure industries. However, the installation of fast chargers at various corridors of highways and cities ... -
Cost-Benefit Analysis of Battery Energy Storage in Electric Power Grids: Research and Practices
(Chapter; Peer reviewed, 2020)This paper provides an overview of methods for including Battery Energy Storage Systems (BESS) into electric power grid planning. The general approach to grid planning is the same with and without BESS, but when BESS is ... -
Costs of Ecological Mitigation at Hydropower Plants
(Chapter; Peer reviewed, 2022) -
Coupled fluid-solid modelling of the valve dynamics in reciprocating compressors
(Science et technique du froid;, Chapter; Peer reviewed, 2022)A novel method coupling computational fluid dynamics (CFD) and finite element method (FEM) was developed to account for the complex physics of the reciprocating compressor. The developed method is based on data exchange ... -
Cryogenic CO2 condensation and membrane separation of syngas for large-scale LH2 production.
(Science et technique du froid;2017-3, Chapter; Peer reviewed, 2017) -
A Current Controlled Virtual Synchronous Machine Adapted for Operation under Unbalanced Conditions
(International Conference on Renewable Energy Research and Applications;9, Chapter; Peer reviewed, 2020)This paper presents a comprehensive evaluation of control strategies for operation of a Virtual Synchronous Machine (VSM) under unbalanced conditions in both grid-connected and islanded mode. The basis for the evaluation ... -
Currents in AC stressed liquid insulated needle plane gap
(Chapter; Peer reviewed, 2014)Currents and space charge phenomena in 8 different dielectric liquids have been investigated for an ac stressed needle plane gap. Applied frequencies ranged from 0.1 Hz to 100 Hz. A high resolution analogue-digital converter ... -
Data-driven Household Load Flexibility Modelling: Shiftable Atomic Load
(Chapter; Peer reviewed, 2018)To keep a stable power system, there should always be balance between the generation and consumption of electricity. In this study, a flexibility modelling method for atomic loads which is based on high resolution appliance ...