Publications

Mohammed Djamali, and Stefan Tenbohlen. A validated online algorithm for detection of fan failures in oilimmersed power transformers. International Journal of Thermal Sciences, (116):224-233, 2017. [PUMA: transformers oilimmersed failures fan power]

Markus Fischer, Stefan Tenbohlen, M. Schaefer, and R. Haug. Determining Power Transformers' Sequence of Service in Power Grids. IEEE Transactions on Dielectrics and Electrical Insulation, (18)5:1789-1797, October 2011. [PUMA: Grids of Service Transformers Sequence Determining Power]

Stefan Tenbohlen, and Maik Koch. Aging Performance and Moisture Solubility of Vegetable Oils for Power Transformers. IEEE Transactions on Power Delivery, (25)2:825-830, 2010. [PUMA: Performance Solubility Oils Moisture Transformers Aging Power Vegetable]

Ebrahim Rahimpour, M. Jabbari, and Stefan Tenbohlen. Mathematical Comparison Methods to Assess Transfer Functions of Transformers to Detect Different Types of Mechanical Faults. IEEE Transactions on Power Delivery, (25)4:2544-2555, October 2010. [PUMA: Faults Mechanical Transformers Power]

Martin Siegel, Michael Beltle, Stefan Tenbohlen, and Sebastian Coenen. Application of UHF Sensors for PD Measurement at Power Transformers. IEEE Transactions on Dielectrics and Electrical Insulation, (24)1:331-339, 2017. [PUMA: UHF Transformers Sensors Power] URL

Michael Betle, and Stefan Tenbohlen. Power Transformer Diagnosis based on Mechanical Oscillations due to AC and DC Currents. IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION, (23)3, SI:1515-1522, IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA, June 2016. [PUMA: transformers monitoring transmittion measurement HVDC hysteresis vibration magnetrostiction noise lines magnetic Power] URL

Jochen Christian, and Kurt Feser. Procedures for Detecting Winding Displacements in Power Transformers by the Transfer Function Method. IEEE Transactions on Power Delivery, (15)1:214-220, 2004. [PUMA: Displacements Winding Detecting Transfer Transformers Method Function Power]

Sebastian Coenen, Sacha Markalous, Martin Siegel, Michael Beltle, Stefan Tenbohlen, Stefan Hoek, P. Fehlmann, R. Schwarz, T. Linn, U. Kempf, M. Weber, and Jitka Fuhr. Improvements to PD measurements for factory and site acceptance tests of power transformers. ELECTRA, 321April 2022. [PUMA: transformers factory for Improvements tests site PD acceptance of and power to measurements]

Chandra Prakash Beura, Michael Beltle, Philipp Wenger, and Stefan Tenbohlen. Experimental Analysis of Ultra-High-Frequency Signal Propagation Paths in Power Transformers. Energies, (15)8:2766, August 2022. [PUMA: Analysis Ultra-High-Frequency Propagation in of Paths Experimental Transformers Signal Power]

Stefan Tenbohlen, Chandra Prakash Beura, Wojciech Sikorski, Ricardo Albarracín Sánchez, Bruno Albuquerque de Castro de Castro, Michael Beltle, Pascal Fehlmann, Martin Judd, Falk Werner, and Martin Siegel. Frequency Range of UHF PD Measurements in Power Transformers.. Energies 2023, (16)3January 2023. [PUMA: UHF PD in Measurements of Transformers Range Frequency Power]

Maik Koch, Stefan Tenbohlen, and Tobias Stirl. Diagnostic Application of Moisture Equilibrium for Power Transformers. IEEE Transactions on Power Delivery, (25)4:2574-2581, October 2010. [PUMA: Application Diagnostic Moisture Transformers Equilibrium Power]

Sebastian Coenen, Stefan Tenbohlen, Sacha Markalous, and T. Strehl. Sensitivity of UHF PD Measurements in Power Transformers. IEEE Transactions on Dielectrics and Electrical Insulation, (15)6:1553-1558, 2008. [PUMA: Sensitivity UHF PD Measurements Transformers Power]

Stefan Tenbohlen, Sebastian Coenen, Mohammad Djamali, Andreas Müller, Mohammed Hamed Samimi, and Martin Siegel. Diagnostic Measurements for Power Transformers. Energies, (9)5:347-372, 2016. [PUMA: Measurements Diagnostic Transformers Power] URL

Chandra Prakash Beura, Michael Beltle, and Stefan Tenbohlen. Positioning of UHF PD Sensors on Power Transformers Based on the Attenuation of UHF Signals. IEEE Transactions on Power Delivery, (34)4:1520-1529, August 2019. [PUMA: transformers waves monitoring discharges electromagnetic propa-gation assessment signal UHF condition power partial] URL

Stefan Tenbohlen, Maximilian Heindl, and Mark Jovalekic. On-site PD Diagnostics, FRA and Moisture Measurement for Power Transformers. IEEE Transactions on Power and Energy, (132)2:1-5, 2012. [PUMA: Diagnostics PD FRA On-site Measurement Moisture for Transformers Power]

Chandra Prakash Beura, Michael Beltle, Stefan Tenbohlen, and Martin Siegel. Quantitative Analysis of the Sensitivity of UHF Sensor Positions on a 420 kV Power Transformer Based on Electromagnetic Simulation. Energies 2020, December 2019. [PUMA: transformers monitoring sensors tests UHF PD acceptance evaluation positioning sensor power sensitivity discharge partial] URL

S. Miyazaki, Y. Mizutani, Mehran Tahir, and Stefan Tenbohlen. Influence of Employing Different Measuring Systems on Measurement Repeatability in Frequency Response Analysis of Power Transformers. IEEE Transactions on Dielectrics and Electrical Insulation, (35)2:27-33, April 2019. [PUMA: Repeatability Response Analysis Measuring Measurement Systems Transformers Frequency Different Power]

Sacha Markalous, Stefan Tenbohlen, and Kurt Feser. Detection and Location of Partial Discharges in Power Transformers using acoustic and electromagnetic signals. IEEE Transactions on Dielectrics and Electrical Insulation, (15)6:1576-1583, 2008. [PUMA: signals Partial Discharges acoustic electromagnetic Transformers Detection Location Power]

Michael Beltle, Andreas Müller, and Stefan Tenbohlen. Statistical Analysis of Online Ultrahigh-Frequency Partial-Discharge Measurement of Power Transformers. IEEE Elecrical Insulation Magazine, (28)6:15-19, November 2012. [PUMA: Partial-Discharge Transformers Ultrahigh-Frequency Power]

Jochen Christian, and Kurt Feser. Procedures for Detecting Winding Displacements in Power Transformers by the Transfer Function Method. IEEE Transactions on Power Delivery, (19)1:214-220, January 2004. [PUMA: transformers functions diagnosis frequency Fault analysis displacements domain transfer winding power] URL