2024

• Elenga Baningobera, Bwandakassy; Oleinikova, Irina; Uhlen, Kjetil Obstfelder; Pokhrel, Basanta Raj. (2024) Challenges and Solutions in Low-Inertia Power Systems with High Wind Penetration. IET Generation, Transmission & Distribution
  Vitenskapelig artikkel

2023

• Haugdal, Hallvar; Uhlen, Kjetil Obstfelder; Johannsson, Hjortur. (2023) A Novel Phasor Power Oscillation Damper With Adaptive Phase Compensation, Achieved Using Multiple Model Adaptive Estimation. IEEE Transactions on Power Systems
  Vitenskapelig artikkel
• Baltensperger, Daniel Simon; Sanchez Acevedo, Santiago; D'Arco, Salvatore; Uhlen, Kjetil Obstfelder. (2023) Assessing Hardware in the Loop Approaches for Wide-Area Monitoring Control and Protection Devices. IEEE Transactions on Power Delivery
  Vitenskapelig artikkel
• Baltensperger, Daniel Simon; Uhlen, Kjetil Obstfelder. (2023) Optimal and predictive under-frequency load shedding against critical islanding contingencies. IEEE (Institute of Electrical and Electronics Engineers)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Rodrigues de Brito, Hugo; Monteiro de Souza, Valeria; Uhlen, Kjetil Obstfelder. (2023) Investigations on Secondary Voltage Control for Long-Term Reactive Power Management. IEEE (Institute of Electrical and Electronics Engineers)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Monteiro de Souza, Valeria; Rodrigues de Brito, Hugo; Uhlen, Kjetil Obstfelder. (2023) Comparison of Voltage Stability Indices Based on Synchronized PMU Measurements. IEEE (Institute of Electrical and Electronics Engineers)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Haugdal, Hallvar; Uhlen, Kjetil Obstfelder; Jóhannsson, Hjörtur. (2023) Achieving Enhanced Phasor POD Performance by Introducing a Control-Input Model. IEEE (Institute of Electrical and Electronics Engineers)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

2022

• Kjølle, Gerd Hovin; Pleym, Anngjerd; Jaehnert, Stefan; Kallset, Vegard Viken; Kiel, Erlend Sandø; Uhlen, Kjetil Obstfelder. (2022) Hvor sårbart er vårt elektriske energisystem? .
  Brosjyre
• Baltensperger, Daniel Simon; Uhlen, Kjetil Obstfelder. (2022) Optimal Coordination of Multiple System Protection Schemes against Critical Overload Conditions. IEEE (Institute of Electrical and Electronics Engineers)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

2021

• Baltensperger, Daniel Simon; Uhlen, Kjetil; Sanchez Acevedo, Santiago; D'Arco, Salvatore. (2021) Experimental Characterization of Methods for Connecting Real-Time Simulations and Synchrophasors. IEEE (Institute of Electrical and Electronics Engineers)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Haugdal, Hallvar; Uhlen, Kjetil Obstfelder; Jóhannsson, Hjörtur. (2021) An Open Source Power System Simulator in Python for Efficient Prototyping of WAMPAC Applications. IEEE (Institute of Electrical and Electronics Engineers)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Reigstad, Tor Inge; Uhlen, Kjetil Obstfelder. (2021) Variable Speed Hydropower for Provision of Fast Frequency Reserves in the Nordic Grid. IEEE Transactions on Power Systems
  Vitenskapelig artikkel
• Reigstad, Tor Inge; Uhlen, Kjetil Obstfelder. (2021) Nonlinear model predictive control of variable speed hydropower for provision of fast frequency reserves. Electric power systems research
  Vitenskapelig artikkel
• Monshizadeh, Shohreh; Uhlen, Kjetil; Hegglid, Gunne John. (2021) Transmission Loss Minimization Using Artificial Intelligent Algorithm for Nordic44 Network Model based on Hourly Load Variation . IFAC-PapersOnLine
  Vitenskapelig artikkel

2020

• Haugdal, Hallvar; Uhlen, Kjetil; Müller, Daniel; Jóhannsson, Hjörtur. (2020) Estimation of Oscillatory Mode Activity from PMU Measurements. IEEE (Institute of Electrical and Electronics Engineers)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Reigstad, Tor Inge; Uhlen, Kjetil. (2020) Variable speed hydropower plant with virtual inertia control for provision of fast frequency reserves . International Journal of Power and Energy Systems
  Vitenskapelig artikkel
• Reigstad, Tor Inge; Uhlen, Kjetil. (2020) Stability properties of nonlinear model predictive control of variable speed hydropower. IET Control Theory & Applications
  Vitenskapelig artikkel
• Reigstad, Tor Inge; Uhlen, Kjetil. (2020) Optimized Control of Variable Speed Hydropower for Provision of Fast Frequency Reserves. Electric power systems research
  Vitenskapelig artikkel
• Jakobsen, Sigurd Hofsmo; Bombois, Xavier; Uhlen, Kjetil. (2020) Non-intrusive identification of hydro power plants’ dynamics using control system measurements. International Journal of Electrical Power & Energy Systems
  Vitenskapelig artikkel
• Reigstad, Tor Inge; Uhlen, Kjetil. (2020) Variable Speed Hydropower Conversion and Control. IEEE transactions on energy conversion
  Vitenskapelig artikkel
• Reigstad, Tor Inge; Uhlen, Kjetil. (2020) Variabel hastighet i kraftverk. Energiteknikk : fagbladet for energibransjen
  Vitenskapelig artikkel

2019

• Hillberg, Emil; Zegers, Antony; Herndler, Barbara; Wong, Steven; Wong, Steven; Pompee, Jean. (2019) Flexibility needs in the future power system. ISGAN
  Rapport
• Na, Shweta; Kishor, Nand; Uhlen, Kjetil; Mohanty, Soumya R. (2019) Detecting instant of multiple faults on the transmission line and its types using time-frequency analysis. IET Generation, Transmission & Distribution
  Vitenskapelig artikkel
• Jakobsen, Sigurd Hofsmo; Uhlen, Kjetil. (2019) Testing of a hydropower plant’s stability and performance using PMU and control system data in closed loop. IET Generation, Transmission & Distribution
  Vitenskapelig artikkel
• Solvang, Espen Hafstad; Sperstad, Iver Bakken; Jakobsen, Sigurd Hofsmo; Uhlen, Kjetil. (2019) Dynamic simulation of simultaneous HVDC contingencies relevant for vulnerability assessment of the nordic power system . IEEE (Institute of Electrical and Electronics Engineers)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Haugdal, Hallvar; Uhlen, Kjetil. (2019) Power Oscillation Monitoring using Statistical Learning Methods. IEEE (Institute of Electrical and Electronics Engineers)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Uhlen, Kjetil; Endegnanew, Atsede Gualu; Haileselassie, Temesgen Mulugeta. (2019) Operation and Control of hybrid AC/DC transmission grids. IEEE conference proceedings
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Haugdal, Hallvar; Uhlen, Kjetil. (2019) Mode Shape Estimation using Complex Principal Component Analysis and k-Means Clustering. IEEE conference proceedings
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Berglund, Frida; Zaferanlouei, Salman; Korpås, Magnus; Uhlen, Kjetil. (2019) Optimal Operation of Battery Storage for a Subscribed Capacity-Based Power Tariff Prosumer—A Norwegian Case Study. Energies
  Vitenskapelig artikkel
• Uhlen, Kjetil. (2019) Resultatrapport NFR Project no 246784: Operation of the Smart Grid With Wide Area Information. NTNU, Institutt for elkraftteknikk
  Rapport

2018

• Anaya-Lara, Olimpo; Tande, John Olav Giæver; Uhlen, Kjetil; Merz, Karl Otto. (2018) Offshore Wind energy technology. John Wiley & Sons John Wiley & Sons
  Vitenskapelig antologi/Konferanseserie
• Sanchez Acevedo, Santiago; Duong, Dinh Thuc; Taffese, Abel Assegid; Uhlen, Kjetil; Tedeschi, Elisabetta. (2018) Performance evaluation of the empirical method for online detection of power oscillations: a multiterminal HVDC application. IEEE conference proceedings
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Solvang, Espen Hafstad; Uhlen, Kjetil. (2018) Dynamic Simulations of Simultaneous HVDC Contingencies in the Nordic Power System Considering System Integrity Protection Schemes. NTNU
  Mastergradsoppgave
• Jakobsen, Sigurd Hofsmo; Uhlen, Kjetil. (2018) Development of a test system for identification of turbine dynamics using the dc power flow. IFAC-PapersOnLine
  Vitenskapelig artikkel
• Andresen, Christian Andre; Torsæter, Bendik Nybakk; Haugdal, Hallvar; Uhlen, Kjetil. (2018) Fault Detection and Prediction in Smart Grids . IEEE conference proceedings
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Parreiras, TJMA; Gomes, S; Taranto, Glauco Nery; Uhlen, Kjetil. (2018) Closest security boundary for improving oscillation damping through generation redispatch using eigenvalue sensitivities. Electric power systems research
  Vitenskapelig artikkel
• Kalemba, Lester; Uhlen, Kjetil; Hovd, Morten. (2018) Stability Assessment of Power Systems Based on a Robust Sum-of-Squares Optimization Approach. IEEE conference proceedings
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Tuttelberg, Kaur; Kilter, Jako; Wilson, Douglas; Uhlen, Kjetil. (2018) Estimation of Power System. IEEE Transactions on Power Systems
  Vitenskapelig artikkel
• Jakobsen, Sigurd Hofsmo; Uhlen, Kjetil; Bombois, Xavier. (2018) Identification of Hydro turbine governors using PMU data. IEEE conference proceedings
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Negi, Sanjay S.; Kishor, Nand; Negi, Richa; Uhlen, Kjetil. (2018) Event signal characterization for disturbance interpretation in power grid. IEEE conference proceedings
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Endegnanew, Atsede Gualu; Kalemba, Lester; Uhlen, Kjetil. (2018) Using Decentralized Control Techniques for Interaction Analysis in Hybrid AC/DC Grids . IEEE conference proceedings
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Karlsen, David; Uhlen, Kjetil; Vormedal, L. (2018) Introducing PMU-based Applications in the Control Room Setting. CIGRE (Conseil international des grands réseaux électriques)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

2017

• Endegnanew, Atsede Gualu; Bergna-Diaz, Gilbert; Uhlen, Kjetil. (2017) Avoiding AC/DC grid interaction in MMC based MTDC Systems. IEEE conference proceedings
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Polster, Stefan; Renner, Herwig; Duong, Dinh Thuc; Uhlen, Kjetil. (2017) Voltage Stability Monitoring using a Modified Thevenin Impedance. IEEE Press
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Duong, Dinh Thuc; Uhlen, Kjetil. (2017) A Topology-based Scheme for Adaptive Underfrequency Load Shedding. IEEE Press
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Zangmo, Gayleg; Om, Khandu; Uhlen, Kjetil. (2017) Impact of hydro-turbine and governor parameters on stability of grid connected power system. International Journal on Electrical Engineering and Informatics
  Vitenskapelig artikkel
• Negi, Sanjay Singh; Kishor, Nand; Kumar, Avinash; Uhlen, Kjetil. (2017) Signal processing for time-frequency representation of synchro-phasor data. IET Generation, Transmission & Distribution
  Vitenskapelig artikkel
• Negi, Sanjay Singh; Kishor, Nand; Uhlen, Kjetil; Negi, Richa. (2017) Event Detection and its Signal Characterization in PMU Data Stream. IEEE Transactions on Industrial Informatics
  Vitenskapelig artikkel
• Schweta, NN; Kishor, Nand; Uhlen, Kjetil; Soumya, Mohanty. (2017) Identification of coherency and critical generators set in real-time signal. IET Generation, Transmission & Distribution
  Vitenskapelig artikkel
• Shweta, NN; Kishor, Nand; Uhlen, Kjetil; Mohanty, S.. (2017) Time-varying coherency study using TFC. IEEE Press
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Negi, Sanjay Singh; Kishor, Nand; Uhlen, Kjetil; Negi, Richa. (2017) Post-processing algorithmfor damped and step-change events detection in PMU signals. IEEE Press
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Jakobsen, Sigurd Hofsmo; Uhlen, Kjetil. (2017) Vector fitting for estimation of turbine governing system parameters. IEEE Press
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Jha, Shailendra Kumar; Støa, Petter; Uhlen, Kjetil. (2017) Green and hybrid microgrid for rural electrification. IEEE conference proceedings
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

2016

• Ersdal, Anne Mai; Imsland, Lars Struen; Uhlen, Kjetil. (2016) Model Predictive Load-Frequency Control. IEEE Transactions on Power Systems
  Vitenskapelig artikkel
• Ersdal, Anne Mai; Imsland, Lars Struen; Uhlen, Kjetil; Fabozzi, Davide; Thornhill, Nina F.. (2016) Model predictive load–frequency control taking into account imbalance uncertainty. Control Engineering Practice
  Vitenskapelig artikkel
• Dharmawardena, Hasala; Uhlen, Kjetil; Gjerde, Sverre Skalleberg. (2016) Modelling wind farm with synthetic inertia for power system dynamic studies. IEEE conference proceedings
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Kumar, Avinash; Negi, Sanjay Singh; Kishor, Nand; Uhlen, Kjetil. (2016) Signal processing and classification of synchro-phasor data. IEEE conference proceedings
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Duong, Dinh Thuc; Uhlen, Kjetil; Jansson, Erik Alexander. (2016) Estimation of hydro turbine-governor system's transfer function from PMU measurements. IEEE Power & Energy Society General Meeting
  Vitenskapelig artikkel
• Endegnanew, Atsede Gualu; Uhlen, Kjetil. (2016) Coordinated Converter Control Strategy in Hybrid AC/DC Power Systems for System Frequency Support. Energy Procedia
  Vitenskapelig artikkel
• Uhlen, Kjetil; Jaehnert, Stefan; Hamon, Camille; Bruno, C; Farahmand, Hossein; Inoue, T. (2016) Analytical techniques and tools for power balancing assessments. Cigre Science & Engineering
  Vitenskapelig artikkel
• Kalemba, Lester; Uhlen, Kjetil; Hovd, Morten. (2016) Two-tier approach for the design of multiple power oscillation damping controllers. IEEE conference proceedings IEEE conference proceedings
  Vitenskapelig antologi/Konferanseserie
• Endegnanew, Atsede Gualu; Uhlen, Kjetil; Bergna Diaz, Gilbert; Beerten, Jef. (2016) Small-signal modelling of an MMC-based HVDC link interfacing large AC systems. IEEE conference proceedings
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Jha, S.K.; Støa, Petter; Uhlen, Kjetil. (2016) Socio-economic impact of a rural microgrid. Curran Associates, Inc.
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Uhlen, Kjetil; Jaehnert, Stefan; Hamon, Camille; Bruno, C; Farahmand, Hossein; Inoue, Takehiro. (2016) Analytical Techniques and tools for power balancing assessments. CIGRE (Conseil international des grands réseaux électriques) CIGRE Technical Brochure (648)
  Rapport
• Sanchez Acevedo, Santiago; Tedeschi, Elisabetta; Uhlen, Kjetil; Djustrom, Jam; Ehnberg, Jimmy; Segundo, Rafael. (2016) CloudGrid – the development of a transnational smart grid lab cooperation. 21 Annual international conference on innovation Baltic Dynamics 2016
  Rapport
• Endegnanew, Atsede Gualu; Haileselassie, Temesgen Mulugeta; Uhlen, Kjetil; Anaya-Lara, Olimpo. (2016) Transient stability analysis in multi-terminal VSC-HVDC grids. IEEE conference proceedings
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Endegnanew, Atsede Gualu; Uhlen, Kjetil. (2016) Global analysis of frequency stability and inertia in AC systems interconnected through an HVDC. IEEE conference proceedings
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

2015

• Duong, Dinh Thuc; Kalemba, Lester; Uhlen, Kjetil; Løvlund, Stig. (2015) A scheme for coordinated secondary voltage control for systems with multiple VAr reserves. IEEE Press
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Endegnanew, Atsede Gualu; Beerten, Jef; Uhlen, Kjetil. (2015) Dynamic Interactions between Asynchronous Grids Interconnected through an MTDC System. CIGRE (Conseil international des grands réseaux électriques)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Endegnanew, Atsede Gualu; Satertro, Kristian; Gjerde, Sverre Skalleberg; Svendsen, Harald Georg; Anaya-Lara, Olimpo; Tande, John Olav Giæver. (2015) Integrated modelling platform for dynamic performance assessment of floating wind turbines. Energy Procedia
  Vitenskapelig artikkel
• Preda, Traian Nicolae; Uhlen, Kjetil. (2015) A test distribution grid for study of slow coherency concept. IEEE Press
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Endegnanew, Atsede Gualu; Uhlen, Kjetil. (2015) Investigation of Dynamic Behaviour of AC/DC Power Systems. Energynautics GmbH
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Duong, Dinh Thuc; Uhlen, Kjetil; Taranto, Glauco Nery; Løvlund, Stig. (2015) A Comparative Case Study of Online Voltage Instability Monitoring. IEEE Press
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Kalemba, Lester; Uhlen, Kjetil; Hovd, Morten. (2015) A scheme for optimal coordination of reactive-power reserves in a large power system. IEEE Press
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Haileselassie, Temesgen Mulugeta; Endegnanew, Atsede Gualu; Uhlen, Kjetil. (2015) Secondary control in multi-terminal VSC-HVDC transmission system.
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Støylen, Hanne; Uhlen, Kjetil; Årdal, Atle Rygg. (2015) Laboratory demonstration of inertial response from VSC-HVDC connected wind farms. IET Digital Library
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Leelaruji, Rujiroj; Vanfretti, L; Uhlen, Kjetil; Gjerde, Jan Ove. (2015) Computing sensitivities from synchrophasor data for voltage stability monitoring and visualization. International Transactions on Electrical Energy Systems
  Vitenskapelig artikkel
• Tai, Vin Cent; Uhlen, Kjetil. (2015) Resampling of data for offshore grid design based on kernel density estimation and genetic algorithm. Energy Procedia
  Vitenskapelig artikkel
• Uhlen, Kjetil. (2015) Smart Transmission Grids Operation and Control (STRONgrid) Sustainable Energy Systems 2050. NTNU
  Rapport
• Dharmawardena, Hasala Indika; Uhlen, Kjetil. (2015) Modeling variable speed Wind turbine for power system dynamic studies. IEEE conference proceedings
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

2014

• Kile, Håkon; Uhlen, Kjetil; Kjølle, Gerd Hovin. (2014) Scenario selection in composite reliability assessment of deregulated power systems. International Journal of Electrical Power & Energy Systems
  Vitenskapelig artikkel
• Kile, Håkon; Uhlen, Kjetil; Warland, Leif; Kjølle, Gerd Hovin. (2014) A Comparison of AC and DC Power Flow Models for Contingency and Reliability Analysis. Curran Associates, Inc.
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Støylen, Hanne; Uhlen, Kjetil; Årdal, Atle Rygg; Sharifabadi, Kamran Torki. (2014) Laboratory demonstration of an offshore grid in the North Sea with DC droop control. IEEE conference proceedings
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Jha, S.K.; Støa, Petter; Uhlen, Kjetil. (2014) Microgrid: Prospects and challenges in Nepal. Curran Associates, Inc.
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Duong, Dinh Thuc; Uhlen, Kjetil; Løvlund, Stig. (2014) A Method for Real Time Voltage Stability Monitoring in Sub-transmission Networks. Curran Associates, Inc.
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Duong, Dinh Thuc; Uhlen, Kjetil. (2014) Analysis of Impacts of SVC on Voltage Collapse Mechanism and Maximum Loadability. IEEE conference proceedings
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Preda, Traian Nicolae; Uhlen, Kjetil; Hadjsaid, Nouredine. (2014) Dynamic Equivalents of Active Distribution Grids Based on Model Parameters Identification. IEEE conference proceedings
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Tai, Vin Cent; Uhlen, Kjetil. (2014) Design and Optimisation of Offshore Grids in Baltic Sea for Scenario Year 2030. Energy Procedia
  Vitenskapelig artikkel
• Marvik, Jorun Irene; Tande, John Olav Giæver; Uhlen, Kjetil. (2014) Wind farm voltage dip measurements. Wind Energy
  Vitenskapelig artikkel

2013

• Kile, Håkon; Uhlen, Kjetil; Kjølle, Gerd Hovin. (2013) The Important Role of Feature Selection when Clustering Load and Generation Scenarios. IEEE conference proceedings
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Duong, Dinh Thuc; Uhlen, Kjetil. (2013) Online voltage stability monitoring based on PMU measurements and system topology. IEEE conference proceedings
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Preda, Traian Nicolae; Uhlen, Kjetil; Nordgård, Dag Eirik. (2013) Clustering Distributed Generation Using the Instantaneous Euclidean Distance in Polar Coordinates. IEEE International Conference on Smart Grid Communications (SmartGridComm)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Preda, Traian Nicolae; Uhlen, Kjetil; Nordgård, Dag Eirik. (2013) Códigos de rede atuais para integração da geração distribuída. Eletricidade Moderna
  Vitenskapelig artikkel
• Preda, Traian Nicolae; Uhlen, Kjetil; Nordgård, Dag Eirik; Toftevaag, Trond. (2013) Dynamic equivalents of active distribution power systems for investigation of transient stability. CIRED - Congrès International des Réseaux Electriques de Distribution
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Haileselassie, Temesgen Mulugeta; Uhlen, Kjetil. (2013) Power System Security in a Meshed North Sea HVDC Grid. Proceedings of the IEEE
  Vitenskapelig artikkel
• Kile, Håkon; Uhlen, Kjetil; Kjølle, Gerd Hovin. (2013) Scenario Selection by Unsupervised Learning in Reliability Analysis of Transmission Networks. IEEE (Institute of Electrical and Electronics Engineers)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Toftevaag, Trond; Preda, Traian Nicolae; Uhlen, Kjetil. (2013) Impact of voltage phase angle changes on low-voltage ride-through performance of small scale hydro DG units. CIRED - Congrès International des Réseaux Electriques de Distribution
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Anaya-Lara, Olimpo; Tande, John Olav Giæver; Uhlen, Kjetil; Adaramola, Muyiwa S.. (2013) Control Challenges and Possibilities for Offshore Wind Farms. SINTEF Energi. Rapport (TR A7258)
  Rapport
• He, Wei; Uhlen, Kjetil; Hadiya, Maheshkumar; Shi, Gang; del Rio, Emilio. (2013) Case Study of Integrating an Offshore Wind Farm with Offshore Oil and Gas Platforms and with an Onshore Electrical Grid. Journal of Renewable Energy
  Vitenskapelig artikkel

2012

• Tande, John Olav Giæver; Korpås, Magnus; Uhlen, Kjetil. (2012) Planning and Operation of Large Offshore Wind Farms in Areas with Limited Power Transfer Capacity. Wind Engineering : The International Journal of Wind Power
  Vitenskapelig artikkel
• Uhlen, Kjetil; Cirio, Diego. (2012) IEA Implementing Agreement on Electricity Networks Analysis, Research & Development (ENARD)Annex IV: - Transmission SystemsFinal report. SINTEF Energi
  Rapport
• Kile, Håkon; Uhlen, Kjetil. (2012) Data reduction via clustering and averaging for contingency and reliability analysis. International Journal of Electrical Power & Energy Systems
  Vitenskapelig artikkel
• Preda, Traian Nicolae; Uhlen, Kjetil; Nordgård, Dag Eirik; Toftevaag, Trond. (2012) External Grid Representation for Assessing Fault Ride Through Capabilities of Distributed Generation Units. IEEE conference proceedings
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Lindeberg, Eivind; Svendsen, Harald Georg; Uhlen, Kjetil. (2012) Smooth Transition Between Controllers for Floating Wind Turbines. Energy Procedia
  Vitenskapelig artikkel
• Kalcon, Giddani O.; Adam, Grain P.; Anaya-Lara, Olimpo; Lo, Stephen; Uhlen, Kjetil. (2012) Small-Signal Stability Analysis of Multi-Terminal VSC-Based DC Transmission Systems. IEEE Transactions on Power Systems
  Vitenskapelig artikkel
• Uhlen, Kjetil; Vanfretti, L; de Oliveira, M; Leirbukt, Albert; Aarstand, Vemund Halmo; Gjerde, Jan. (2012) Wide-Area Power Oscillation Damper Implementation and Testing in the Norwegian Transmission Network. IEEE Power & Energy Society General Meeting
  Vitenskapelig artikkel
• Haileselassie, Temesgen Mulugeta; Uhlen, Kjetil. (2012) Precise control of power flow in multiterminal VSC-HVDCs using DC voltage droop control. IEEE conference proceedings
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Preda, Traian Nicolae; Uhlen, Kjetil; Nordgård, Dag Eirik. (2012) Instantaneous Harmonics Compensation using Shunt Active Filters in a Norwegian Distribution Power System with Large Amount of Distributed Generation. IEEE conference proceedings
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Haileselassie, Temesgen Mulugeta; Uhlen, Kjetil. (2012) Impact of DC Line Voltage Drops on Power Flow of MTDC Using Droop Control. IEEE Transactions on Power Systems
  Vitenskapelig artikkel
• Haileselassie, Temesgen Mulugeta; Uhlen, Kjetil; Undeland, Tore Marvin. (2012) Control, Dynamics and Operation of Multi-terminal VSC-HVDC Transmission Systems. Doktoravhandlinger ved NTNU (354)
  Doktorgradsavhandling
• Kile, Håkon; Uhlen, Kjetil. (2012) Supervised and Unsupervised Learning in Composite Reliability Evaluation. IEEE conference proceedings
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Uhlen, Kjetil. (2012) IEA Implementing Agreement on Electricity Networks Analysis, Research & Development (ENARD)Annex IV: - Transmission SystemsFinal report. SINTEF Energi. Rapport (TR A7191)
  Rapport
• Storvann, V; Johansson, Emil; Uhlen, Kjetil. (2012) Indicating and Mitigating Voltage Collapse Comparing Voltage Stability Indicators. IEEE PES Innovative Smart Grid Technologies Conference Europe
  Vitenskapelig artikkel
• Kile, Håkon; Uhlen, Kjetil. (2012) Averanging Operating States with Infinite Mixtures in Reliability Analysis of Transmission Networks.
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Ersdal, Anne Mai; Imsland, Lars Struen; Uhlen, Kjetil. (2012) Coordinated Control of Multiple HVDC links using backstepping. Proceedings of the IEEE Conference on Control Applications
  Vitenskapelig artikkel
• Preda, Traian Nicolae; Uhlen, Kjetil; Nordgård, Dag Eirik. (2012) An overview of the present grid codes for integration of distributed generation. Institution of Electrical Engineers (IEE)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Hillberg, Karl Emil; Trengereid, F.; Breidablik, Ø.; Uhlen, Kjetil; Kjølle, Gerd Hovin; Løvlund, S.. (2012) System Integrity Protection Schemes - Increasing operational Security and System Capacity. CIGRE (Conseil international des grands réseaux électriques)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

2011

• Baker, John; Brunner, Helfried; Sinclair, John; Uhlen, Kjetil; Cirio, Diego. (2011) ENARD: Results from the First 5 year Term of International Collaboration in electricity networks. CIRED Conference Proceedings
  Vitenskapelig artikkel
• Svendsen, Harald Georg; Hadiya, Maheshkumar; Øyslebø, Eirik Veirød; Uhlen, Kjetil. (2011) Integration of offshore wind farm with multiple oil and gas platforms. IEEE conference proceedings
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Uhlen, Kjetil; Cirio, D; Haarla, L; Bekaert, D; Jensen, KB; Duthaler, C. (2011) Quais os desafios e como serao os sistemas de transmissao do futuro?. Eletricidade Moderna
  Vitenskapelig artikkel
• Endegnanew, Atsede Gualu; Sætertrø, Kristian; Gjerde, Sverre Skalleberg; Svendsen, Harald Georg; Anaya-Lara, Olimpo; Tande, John Olav Giæver. (2011) Performance assessment of floating wind turbines during grid faults. European Wind Energy Association
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Haileselassie, Temesgen Mulugeta; Uhlen, Kjetil; Tande, John Olav Giæver; Anaya-Lara, Olimpo. (2011) Connection Scheme for North Sea Offshore Wind Integration to UK and Norway: Power Balancing and Transient Stability Analysis. IEEE conference proceedings
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Haileselassie, Temesgen Mulugeta; Uhlen, Kjetil. (2011) Power Flow Analysis of Multi-terminal HVDC Networks. IEEE conference proceedings
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Haileselassie, Temesgen Mulugeta; Torres Olguin, Raymundo E.; Vrana, Til Kristian; Uhlen, Kjetil; Undeland, Tore Marvin. (2011) Main Grid Frequency Support Strategy for VSC-HVDC Connected Wind Farms with Variable Speed Wind Turbines. IEEE conference proceedings
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Johansson, Emil; Uhlen, Kjetil; Kjølle, Gerd; Toftevaag, Trond. (2011) RELIABILITY EVALUATION OF WIDE AREA MONITORING APPLICATIONS AND EXTREME CONTINGENCIES. Curran Associates, Inc.
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

2010

• Chaudhuri, N.R.; Domahidi, A.; Majumder, R.; Chaudhuri, B.; Korba, P.; Ray, S.. (2010) Wide-area power oscillation damping control in Nordic equivalent system. IET Generation, Transmission & Distribution
  Vitenskapelig artikkel
• He, Wei; Jacobsen, Gunnar; Anderson, Tiit; Olsen, Freydar; Hanson, Tor; Korpås, Magnus. (2010) The Potential of Integrating Wind Power with Offshore Oil and Gas Platforms. Wind Engineering : The International Journal of Wind Power
  Vitenskapelig artikkel
• Korba, Petr; Uhlen, Kjetil. (2010) Wide-area monitoring of electromechanical oscillations in the Nordic power system: practical experience. IET Generation, Transmission & Distribution
  Vitenskapelig artikkel
• Uhlen, Kjetil; Cirio, D; Haarla, L; Bekaert, K.; Jensen, KB; Duthaler, C. (2010) IEA Enard: - International collaboration on developments in transmission systems R&D. CIGRE (Conseil international des grands réseaux électriques)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Johansson, Emil; Uhlen, Kjetil; Nybø, Agnes; Kjølle, Gerd; Gjerde, Oddbjørn. (2010) Extraordinary events: Understanding sequence, causes, and remedies. CRC Press
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Chaudhuri, Nilanjan Ray; Domahidi, Alexander; Chaudhuri, Balarko; Majumder, Rajat; Korba, Petr; Ray, Swakshar. (2010) Power oscillation damping control using wide-area signals: A case study on Nordic equivalent system. IEEE conference proceedings
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Haileselassie, Temesgen M.; Uhlen, Kjetil. (2010) Primary Frequency Control of Remote Grids Connected by Multi-terminal HVDC. IEEE Power Engineering Society General Meeting
  Vitenskapelig artikkel

2009

• Tande, John Olav Giæver; Korpås, Magnus; Warland, Leif; Uhlen, Kjetil; van Hulle, Frans. (2009) Impact of TradeWind offshore wind power capacity scenarios on power flows in the European HV network. Icfai University Press
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Korpås, Magnus; Warland, Leif; Tande, John Olav Giæver; Uhlen, Kjetil Obstfelder. (2009) Impact of increased wind integration on power flows and congestion costs in the European transmission network. European Wind Energy Association
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Warland, Leif; Korpås, Magnus; Tande, John Olav Giæver; Uhlen, Kjetil Obstfelder. (2009) Cross-border transmission upgrade with increasing wind power penetration. European Wind Energy Association
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

2008

• Sørensen, Poul; Norheim, Ian; Meibom, Peter; Uhlen, Kjetil. (2008) Simulations of wind power integration with complementary power system planning tools. Electric power systems research
  Vitenskapelig artikkel
• Suul, Jon Are Wold; Uhlen, Kjetil; Undeland, Tore Marvin. (2008) Wind Power Integration in Isolated Grids enabled by Variable Speed Pumped Storage Hydropower Plant. IEEE (Institute of Electrical and Electronics Engineers)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

2006

• Doorman, Gerard L.; Uhlen, Kjetil; Kjølle, Gerd Hovin; Huse, Einar Ståle. (2006) Vulnerability analysis of the Nordic power system. IEEE Transactions on Power Systems
  Vitenskapelig artikkel
• Eek, Jarle; Uhlen, Kjetil; Gjengedal, Terje. (2006) Wind Power Contribution to Primery Frequency Response in the Nordel Power System. Nordic Wind Power Conference
  Rapport
• Eek, Jarle; Di Marzio, Giuseppe; Lund, Torstein; Fosso, Olav B; Gjengedal, Terje; Uhlen, Kjetil. (2006) Reactive Power Compensation and Voltage Control in Regional Networks with High Wind Power Penetration and Thermal Capacity Constraints. EWEC 2006
  Rapport
• Eek, Jarle; Gjengedal, Terje; Uhlen, Kjetil. (2006) Influence of High Wind Power Penetration on the Nordic Power Grid Primary Control Response. Cigre
  Rapport

2005

• Tande, John Olav Giæver; Uhlen, Kjetil; Gjengedal, Terje. (2005) Options for large scale integration of wind power.
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Eek, Jarle; Uhlen, Kjetil; Gjengedal, Terje. (2005) Transient stability studies comparing synchronous and doubly fed induction generators.
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Di Marzio, Giuseppe; Fosso, Olav B; Uhlen, Kjetil; Palsson, Magni T.. (2005) Large-Scale Wind Power Integration - Voltage Stability Limits and Modal Analysis. Curran Associates, Inc.
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Di Marzio, Giuseppe; Eek, Jarle; Uhlen, Kjetil; Fosso, Olav B. (2005) A proposed model for stability assessment of electrical power systems with large scale wind power integration.
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

2004

• Tande, John Olav Giæver; Uhlen, Kjetil. (2004) Cost analysis case study of grid integration of larger wind farms. Wind Engineering : The International Journal of Wind Power
  Vitenskapelig artikkel
• Doorman, Gerard L.; Kjølle, Gerd Hovin; Uhlen, Kjetil Obstfelder; Huse, Einar Ståle; Flatabø, Nils. (2004) Vulnerability of the Nordic Power System - Executive Summary. Teknisk rapport / SINTEF energiforskning (TR A5968)
  Rapport
• Doorman, Gerard L.; Kjølle, Gerd Hovin; Uhlen, Kjetil Obstfelder; Huse, Einar Ståle; Flatabø, Nils. (2004) Vulnerability of the Nordic Power System. Teknisk rapport / SINTEF energiforskning (TR A5962)
  Rapport

2003

• Pálsson, Magni Tor; Toftevaag, Trond; Uhlen, Kjetil; Tande, John Olav Giæver. (2003) Control concepts to enable increased wind power penetration. IEEE conference proceedings
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

2002

• Pálsson, Magni Tor; Toftevaag, Trond; Uhlen, Kjetil; Tande, John Olav Giæver. (2002) Large-scale wind power integration and voltage stability limits in regional networks. IEEE conference proceedings
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

2001

• Tande, John Olav Giæver; Uhlen, Kjetil. (2001) Wind turbines in weak grids-constraints and solutions. Institution of Electrical Engineers (IEE)
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

2000

• Grande, Ove Steinar; Uhlen, Kjetil Obstfelder; Bakken, Bjørn Harald; Hernes, Magnar; Fosso, Olav Bjarte. (2000) Operational Security Assessment - Planning and Control. SINTEF Energi. Rapport (TR A5294)
  Rapport

1998

• Uhlen, Kjetil; Petterteig, Astrid; Kjølle, Gerd Hovin; Holen, Arne Torstein; Løvås, Gunnar Gundersby; Meisingset, M.. (1998) On-line security assessment and control - probabilistic versus deterministic operational criteria.
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel