Jörgen Blennow
Jörgen Blennow är docent i högspänningsteknik. Hans forskning fokuserar på experimentella tekniker för studier av fenomen i högspända elektriska isolationssystem. Detta inkluderar mätning av partiella urladdningar, högfrekventa höga strömmar och dielektrisk respons i oljeimpregnerade papperssystem så väl som studier av elektriska träd i polyeten och strömskador i lager hos vindturbiner.
Visar 81 publikationer
Investigations of Particle-Initiated Insulation Breakdowns in Bearings
Loss Current Studies of Partial Discharge Activity
Study of Partial Discharge Activity by Excess Current
Spontaneous Partial Discharge Oscillations Studied by Excess Current
On Excess Current During and After Partial Discharge Activity
Improvement of Frequency Response for a Zero-Flux Current Measuring System
Electrical Characterization of Bearing Lubricants
Partial Discharges in Motor Wires at PWM Voltages of Different Smoothness
PARTIAL DISCHARGES IN A STATOR UNDER SYNTHEZISED VOLTAGE WAVEFORMS
Correction of Geometric Influence in Permittivity Determination
The Effect of DC Electro-thermal Ageing on Electrical Treeing in Polyethylene
Enhanced accuracy in dielectric response material characterization by air reference method
PD Properties when Varying the Smoothness of Synthesized Waveforms
Investigation of the Static Breakdown Voltage of the Lubricating Film in a Mechanical Ball Bearing
Evaluation of the Performance of Several Object Types for Electrical Treeing Experiments
Arbitrary Waveform Impedance Spectroscopy used for Accurate Contact-free Dielectric Characterization
Harmonic Limited Test Waveform for Fast AWIS Dielectric Studies
Noise and Aliasing Aspects in a Multiharmonic-Dielectric-Response-Measurement System
Wire-Plane Electrode System for Electrical Tree Initiation Exposed to AC and DC Voltage Stress
Resonant PD signal decoupling circuit for rapidly changing voltages
Dielectric response measurements during electrical treeing in sub-picofarad samples
Evidence for Changing PD Properties at Short Voltage Rise Times
A Versatile System for Electrical Treeing Tests under AC and DC Stress Using Wire Electrodes
Evaluation of a PD Measuring System for Repititive Steep Voltage Waveforms
CHANGES IN PD PROPERTIES WITH DECREASING VOLTAGE RISE
Continuous monitoring of dielectric properties of LDPE samples during electrical treeing
Dielectric Response Diagnoses For Transformer Windings
Off-line and On-line Dielectric Response Measurements for Diagnostics of Paper-oil Insulation
Dielectric Response Diagnoses for Transformer Windings
Influence of rise time on partial discharge extinction voltage at semi-square voltage waveforms
Influence of compressive stress on dielectric properties of polymers
Cavity Partial Discharges at Semi-Square voltages of Different Rise Times
Dielectric Heating in Insulating Materials Subjected to Voltage Waveforms with High Harmonic Content
Measurement and Analysis of Partial Discharge Current during Square Voltage Waveforms
High voltages with high harmonic content: The influence of dielectric heating
Dielectric Response Measurements Utilizing Semi-Square Voltage Waveforms
Measurement of Partial Discharges at Rapidly Changing Voltages
Study of Partial Discharges at the Positive and Negative Voltage Flanks of Semi-Square Voltages
Experimental study of current damages in bearings
Reliability and Improvements of Water Titration by the Karl Fischer Technique
High and Low Voltage Dielectric Response Measurements Utilizing Arbitrarily Shaped Waveforms
Detection of Surface Partial Discharges at Semi-Square Voltages
Dielectric Spectroscopy Measurements on Power Transformers Field Experiences
Dielectric response measurements utilizing non-sinusoidal waveforms
Partial discharges measured at semi-square voltages
Statistical time distribution of partial discharges under semi-square voltages
Effect of Surface Charge on Flashover Voltage of Polymer Materials
Experiences from on-site dielectric spectroscopy measurements on power transformers
Effects of Surface Charge Accumulation on Impulse Flashover Voltage on Silicone Rubber Surface
Active High Voltage Insulation
Optical sensors based on liquid crystals for measuring DC fields in air
Electrical Discharge in an Air Gap with Dielectric-Covered Electrodes
On Discharge Phenomena in a Covered Electrode System in Air
Electric Field Reduction Due to Charge Accumulation in a Dielectric-Covered Electrode System
Active High Voltage Insulation - A New Hybrid Insulation Concept with Dynamic and Active Features
Electric Field Reduction in a Covered Electrode Gap due to Ionization and Charge Accumulation
The Electric Field Distribution in a Covered Electrode System Modelled with a Lumped RC Circuit
Effects of Charge Accumulation in a Dielectric Covered Electrode System in Air
Partial Discharge Activity at Different Temperatur and Electrical Stresses of Micaceous Insulation
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Visar 3 forskningsprojekt
Karakterisering av åldring i isolationssystem med förlustström
Partiella urladdningar vid pulsbreddmodulerad och kraftfrekvent högspänning
Karakterisering och modellering av lagerströmaktivitet