Zobrazeno 1 - 9 of 9 pro vyhledávání: '"Hjörtur Jóhannsson"'
1
Frequency and Voltage Compliance Capabilities of Grid-Forming Wind Turbines in Offshore Wind Farms in Weak AC Grids
Autor: Benjamin Vilmann, Peter Jan Randewijk, Hjörtur Jóhannsson, Jesper Hjerrild, Ashraf Khalil
Publikováno v: Electronics
Volume 12
Issue 5
Pages: 1114
Vilmann, B, Randewijk, P J, Jóhannsson, H, Hjerrild, J & Khalil, A 2023, ' Frequency and Voltage Compliance Capabilities of Grid-Forming Wind Turbines in Offshore Wind Farms in Weak AC Grids † ', Electronics, vol. 12, no. 5, 1114 . https://doi.org/10.3390/electronics12051114
Weak grid conditions challenge the grid integration of offshore wind farms. Especially grids with low inertia and large grid impedance questions frequency and voltage compliance capabilities. Grid-forming wind turbines are a promising technology for
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ed38ab50c9454193969df046eee909e2
https://doi.org/10.3390/electronics12051114
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2
Method of determining remedial control actions for a power system in an insecure state
Autor: Hjörtur Jóhannsson, Johannes Tilman Gabriel Weckesser
Publikováno v: Jóhannsson, H & Weckesser, J T G Dec. 28 2011, Method of determining remedial control actions for a power system in an insecure state, Patent No. WO2013098184, IPC No. G05D5/00; H02J3/24; H02J3/46 .
Technical University of Denmark Orbit
A method of determining remedial control actions for a power system in an insecure and unstable operating condition is provided. The power system hasa plurality of generators injecting power into a network and each generator has a generator injection
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::d7232bee625eb9ef4f77a45131aa0716
http://orbit.dtu.dk/en/publications/method-of-determining-remedial-control-actions-for-a-power-system-in-an-insecure-state(19eed539-f3f6-4add-9301-1f4e71842352).html
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3
Assessment of Power Systems
Autor: Hjörtur Jóhannsson
Publikováno v: Jóhannsson, H, Assessment of Power Systems, Patent No. 111681113.6-2207 .
Technical University of Denmark Orbit
The present invention relates to a method for assessment of a power system and an early warning system for a power system, the method being based on aperiodic small signal instabilities. The power system has a plurality of generators comprising one o
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::a517f37770738044434053849e9eed22
https://orbit.dtu.dk/en/publications/4f530827-5d27-4b3f-a851-ed38371c9d5e
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4
Stabiliser Fault Emergency Control using Reconfiguration to Preserve Power System Stability
Autor: Andreas Søndergaard Pedersen, Richter, Jan H., Mojtaba Tabatabaeipour, Hjörtur Jóhannsson, Mogens Blanke
Publikováno v: Technical University of Denmark Orbit
Pedersen, A S, Richter, J H, Tabatabaeipour, M, Jóhannsson, H & Blanke, M 2014, Stabiliser Fault Emergency Control using Reconfiguration to Preserve Power System Stability . in Proceedings of the 19th IFAC World Congress . International Federation of Automatic Control, I F A C Workshop Series, no. 1, vol. 19, 19th World Congress of the International Federation of Automatic Control (IFAC 2014), Cape Town, South Africa, 24/08/2014 .
Stabiliser faults in multi-machine power systems are examined in this paper where fault-masking and system reconguration of the nonlinear system is obtained using a virtual actuator approach. Phasor Measurement Units, which can be integrated in wide-
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::7ac3e015f7aa5fc40f80e1d7d3ff6d00
https://orbit.dtu.dk/en/publications/0a6366e7-c0f8-4edd-b6d6-5c68593f38c5
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7
Thévenin equivalent based static contingency assessment
Autor: Hjörtur Jóhannsson, Jakob Glarbo Møller
Publikováno v: Technical University of Denmark Orbit
Jóhannsson, H & Møller, J G Oct. 08 2015, Thévenin equivalent based static contingency assessment, Patent No. WO2015150577, IPC No. H02J 3/ 04 A I .
The present invention relates to a method for static security assessment of a power system and a real time static security assessment system for assessing a power system, the power system having a plurality of generators, the plurality of generators
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::77055993e958cfeb837eac7994e2486e
https://orbit.dtu.dk/en/publications/db415ecb-eca4-403f-a652-a4d2e6fc71e8
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