Stanislaw Gubanski

Analyses of unexplained faults in transmission lines in the power grid of Ethiopia

2024

Investigation on Pollution-Induced Flashovers of In-Service Insulators in Ethiopian Power Transmission Lines

Controllable impulse PD diagnostic method - a new step into testing insulation system performance

In a search for reliable methods to evaluate resistance to electrical treeing in materials for HVAC and HVDC cable insulations

Square Shaped Waveform Pulse Control to minimize PD Exposure within Motor Insulation

Polyolefin composition for medium/high/extra high voltage cables comprising benzil-type voltage stabiliser

Frequency Domain Measurements for Diagnosis of Power Transformers: Experiences from Australia, Malaysia, Sri Lanka and UK

Detection of Electrical Tree Formation in XLPE Insulation through Applying Disturbed DC Waveforms

Polymer composition and electrical devices

2020

Temperature and Field Induced Variations of Electric Conductivities of HTV Silicone Rubbers Derived from Measured Currents and Surface Potential Decay Characteristics

2020

Charging and Discharge Currents in Low-Density Polyethylene and its Nanocomposite

2020

Electrical Detection of Degradation in Specimens of HVDC Cable Insulation

Enhanced charge injection in rough HVDC extruded cable interfaces

Space charge behavior in silicone rubber from in-service aged HVDC composite insulators

2019

Manifestation of Interactions of Nano-Silica in Silicone Rubber Investigated by Low-Frequency Dielectric Spectroscopy and Mechanical Tests

Partial discharge characteristics of electrical treeing in XLPE insulation exposed to voltages of different rise times

2019

Highly structured graphene polyethylene nanocomposites

Computational analysis of the electrostatic environment and flashover performance of a suspension linkstick for live-line work on high voltage power lines

2019

Field-dependent electric conductivities of silicone rubbers deduced from measured currents and surface potential decay characteristics

Charge transport in a double-layered enamel insulation during surface potential decay

FROM THE EDITORS' DESK

Simulations of Electrical Discharges in Air Using Stabilized Drift-Diffusion Model

Partial discharges at different voltage waveshapes: Comparison between two different acquisition systems

2017

Gas Barrier, Thermal, Mechanical and Rheological Properties of Highly Aligned Graphene-LDPE Nanocomposites

Influence of nanoparticle surface coating on electrical conductivity of LDPE/Al2O3 nanocomposites for HVDC cable insulations

DC Conductivity Measurements of LDPE: Influence of Specimen Preparation Method and Polymer Morphology

Robust measurements of electric conductivity in polyethylene based materials: measurement setup, data processing and impact of sample preparation

2017

Electrical, mechanical, and thermal properties of LDPE graphene nanoplatelets composites produced by means of melt extrusion process

Partial discharge characteristics in motor insulations under exposure to multi-level inverters

Cable surface preparation: chemical, physical and electrical characterization and impact on breakdown voltage

Influence of manufacturing process on electrical properties of LDPE-GnP nanocomposites

Surface Potential Decay on LDPE and its Nanocomposites

Three-Dimensional Nanometer Features of Direct Current Electrical Trees in Low-Density Polyethylene

Computer Simulations of Discharges along Insulator Surfaces

Partial Discharge Characteristics of Electrical Treeing in XLPE Insulation Exposed to Voltages of Different Rise Times

Analyses of electrostatic fields in the vicinity of a bucket on an insulated aerial vehicle and electrical gas discharges on a hotstick

Surface Potential Decay on Material Samples Taken From In-service Aged HVDC Silicone Rubber Composite

Surface Potential Decay on Material Samples Taken From In-service Aged (U) HVDC Silicone Rubber Composite Insulators

On the Conducting and Non-conducting Electrical Trees in XLPE Cable Insulation Specimens

PD characteristics at Square Shaped Voltages Applying Two Different Detecting

Dielectric Response Characterization of In-service Aged Sheds of (U) HVDC Silicone Rubber Composite Insulators

Effect of Interfaces on Surface Potential Decay on Double Layered HTV Silicone Rubber Samples

Insulating materials for next generations of HVAC and HVDC cables

Partial Discharge of Gel Insulated High Voltage Power Modules subjected to Unconventional Voltage Waveforms

2016

Charge Transport in LDPE Nanocomposites Part II—Computational Approach

Novel electrical properties of extruded LDPE-GnP filled nanocomposites

The impact of MgO nanoparticle interface in ultra-insulating polyethylene nanocomposites for high voltage DC cables

Surface Potential Decay on LDPE and LDPE/Al2O3 Nano-Composites: Measurements and Modeling

Open-circuit Thermally Stimulated Currents in LDPE/Al2O3 Nanocomposite

Highly Efficient Interfaces in Nanocomposites Based on Polyethylene and ZnO Nano/Hierarchical Particles: A Novel Approach toward Ultralow Electrical Conductivity Insulations

Polyethylene nanocomposites for the next generation of ultra-low transmission-loss HVDC cables: insulations containing moisture-resistant MgO nanoparticles

Ultrasonic phased array detection of internal deffects in composite insulators

2016

Charge Transport in LDPE Nanocomposites Part I—Experimental Approach

Invariant Dielectric Strength upon Addition of Low Amounts of HDPE to LDPE

2016

Dielectric properties of graphene nanoplatelets filled LDPE

AC and DC Pre-stressed Electrical Trees in LDPE and its Aluminum Oxide Nanocomposites

PD characteristics at Square Shaped Voltages Applying Two Different Detecting Techniques

Space charge controlled electric field preceding inception of electric tree in XLPE at AC voltage

A New Application Area for Fullerenes: Voltage Stabilizers for Power Cable Insulation

Outdoor Polymeric Insulators: Role of Corona in Performance of Silicone Rubber Housings

2015

High electron affinity: a guiding criterion for voltage stabilizer design

Loss Current Studies of Partial Discharge Activity

Mapping of Fields Induced by Electrical Trees in Polyethylene

Electrical treeing in polyethylene-alumina-filled nanocomposites for HVDC applications

DC electrical conductivity of LDPE-based nanocomposites

Space charge controlled electric field preceeding inception of electric tree in XLPE at ac voltage

Study of Partial Discharge Activity by Excess Current

Modifications of dielectric properties of polyamides induced by long-term exposure to corona

Dielectric strength of γ-radiation cross-linked, high vinyl-content polyethylene

Thioxanthone Derivatives as Stabilizers Against Electrical Breakdown in Cross-Linked Polyethylene for High Voltage Cable Applications

Fiftieth Anniversary of TDEI (Editorial)

2015

Formation and the structure of freeze-dried MgO nanoparticle foams and their electrical behaviour in polyethylene

Electrical Treeing Behavior at High Temperature in XLPE Cable Insulation Samples

Potential Decay on Silicone Rubber Surfaces Affected by Bulk and Surface Conductivities

Mechanisms of Surface Potential Decay on Enamel Wire Coatings

Spontaneous Partial Discharge Oscillations Studied by Excess Current

On Excess Current During and After Partial Discharge Activity

Electrical Characterization of a New Enamel Insulation

Partial Discharge Behavior of a Newly Developed Enamel Insulation at Various Voltage Rise Times

Improvement of Frequency Response for a Zero-Flux Current Measuring System

2014

Partial Discharges in Motor Wires at PWM Voltages of Different Smoothness

Electrical Treeing Behavior of DC and Thermally Aged Polyethylenes Utilizing Wire-Plane Electrode Geometries

Charge decay on enamel wire surface

Tailored Side-Chain Architecture of Benzil Voltage Stabilizers for Enhanced Dielectric Strength of Cross-Linked Polyethylene

Contribution of Gas Neutralization to the Potential Decay on Silicon Rubber Surfaces at Different Ambient Pressures

Moisture in Cellulose Insulation of Power Transformers - Statistics

TDEI issue CMD Editorial - Condition Monitoring and Diagnostics

PARTIAL DISCHARGES IN A STATOR UNDER SYNTHEZISED VOLTAGE WAVEFORMS

Effects of long term corona and humidity exposure of silicone rubber based housing materials

Impulse testing of hybrid gas-solid polymer insulation systems

Performance of a hybrid insulation system

Correction of Geometric Influence in Permittivity Determination

The Effect of DC Electro-thermal Ageing on Electrical Treeing in Polyethylene

Condition Monitoring and Diagnostics

New Insulating Materials for Next Generation of HVDC Cables - Methods for Evaluation of Degradation Phenomena by Electrical Treeing

Surface Potential Decay on Silicon Rubber Samples at Reduced Gas Pressure

Analysis of Multiple Electrical Trees Incepted at Wire Electrode Test Object by Means of PD Detection

2013

Enhanced accuracy in dielectric response material characterization by air reference method

2013

PD Properties when Varying the Smoothness of Synthesized Waveforms

2013

Application of streamer criteria for calculations of flashover voltages of gaseous insulation with solid dielectric barrier

Investigation of the Frequency Dependency of Phase Angle Error in a Zero-flux Current Measuring System

An extended OPF incorporating multi-terminal VSC-HVDC and its application on transmission loss evaluation

Evaluation of the Performance of Several Object Types for Electrical Treeing Experiments

Electrical Tree Formation as a Measure of Degradation Resistance in Polymeric Materials for HVDC Applications

Increasing Transmission Capacity: The View From a New CIGRE Brochure

Investigation of Temperature Effect on Electrical Trees in XLPE Cable Insulation

Measurements of ion mobility in transformer oil: evaluation in terms of ion drift

Influence of Biofilm Contamination on Electrical Performance of Silicone Rubber Based Composite Materials

Arbitrary Waveform Impedance Spectroscopy used for Accurate Contact-free Dielectric Characterization

DC Flashover Characteristics of a Polymeric Insulator in Presence of Surface Charges

Special report for SC D1 (Materials and Emerging Test Techniques)

Move to DC Will Require New Insulation Test Methodologies

Dielectric Properties of Transformer Oils for HVDC Applications

Electrical Tree Inhibition by Voltage Stabilizers

Smart Grids and high voltage engineering

Characterization of Epoxy Microcomposite and Nanocomposite Materials for Power Engineering Applications

Measurement of ion mobility in transformer oils for HVDC applications

Inter-Continental Transmission: Pipe Dream or Future Reality?

Surface charge decay on HTV silicone rubber: effect of material treatment by corona discharges

Surface Charge & DC Flashover Performance of Polymeric Insulators

Surface Charges on Cylindrical Polymeric Insulators

Polymer Nanocomposites - Fundamentals and possible applications to Power Sector

INMR Congress Offered Focus on Bushings & Cable Accessories

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

Charging of Solid Elements of High-Voltage Insulation by Corona in Gas

Surface Charge Decay on Polymeric Materials under Different Neutralization Modes in Air

Dielectric Response Measurements for Bushing Condition Assessment

Better Understanding Smart Grid

Surface Charge Decay of Corona Charged HTV Silicone Rubber Samples due to Bulk Conduction

Editorial

Resonant PD signal decoupling circuit for rapidly changing voltages

Dielectric response measurements during electrical treeing in sub-picofarad samples

Dielectric Properties of XLPE/SiO2 Nanocomposites Based on CIGRE WG D1.24 Cooperative Test Results

AC and DC Corona/Ozone-Induced Ageing of HTV Silicone Rubber

Evidence for Changing PD Properties at Short Voltage Rise Times

Performance of HTV Silicone Rubber under Artificial AC and DC Corona/Ozone Test

Dielectric Response Diagnoses for Transformer Windings

Polymer Nanocomposites - Fundamentals and possible applications to Power Sector

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

Hybrid Insulation in Gas Insulated Systems

AC or DC Corona Ageing of HTV Silicone Rubber

Bushings Technology Review: Current Designs & Future Tendencies

CHANGES IN PD PROPERTIES WITH DECREASING VOLTAGE RISE

Continuous monitoring of dielectric properties of LDPE samples during electrical treeing

Another Look at Brittle Fracture of Composite Insulators

Simulation of Surface Charge Effect on Impulse Flashover Characteristics of Outdoor Polymeric Insulators

Evaluating Resistance of Polymeric Materials for Outdoor Applications to Corona and Ozone

Nanodielectrics: A "Universal" Panacea for Solving All Electrical Insulation Problems?

Dielectric Response Diagnoses For Transformer Windings

Off-line and On-line Dielectric Response Measurements for Diagnostics of Paper-oil Insulation

Fatigue Strength & Brittle Fracture of Composite Insulators

Dielectric Response Diagnoses for Transformer Windings

Influence of rise time on partial discharge extinction voltage at semi-square voltage waveforms

Editorial- Outdoor High Voltage Insulation

Doubling Line Capacity with New Conductors

Role of surface charging in the performance of polymeric high voltage insulation systems

Ageing of Silicone Rubber Insulators in Coastal and Inland Tropical Environment

Insulator Performance Under Wintry Conditions Topic of New Book

1000 kV Pilot Project Begins New Era

Experimental Comparisons of Susceptibilities to Long-term Action of AC Corona and Ozone of Non-ceramic Outdoor Insulation Materials

Tracking behaviour in the presence of conductive interfacial defects

Influence of thermal ageing on dielectric responce of oil-paper insulation

Measurement and Simulation of Positive Impulse Corona Current

Ceramic Insulators Seem to Still Dominate the Market

Influence of compressive stress on dielectric properties of polymers

Evaluating Resistance of Materials for Outdoor Insulator Housings to Corona and Ozone

Cavity Partial Discharges at Semi-Square voltages of Different Rise Times

Water Vapour Permeability through Corona Aged Housing Materials

Smarts Grids? They are already here

Dielectric Heating in Insulating Materials Subjected to Voltage Waveforms with High Harmonic Content

Charging characteristics of EPDM and silicone rubbers deduced from surface potential measurements

Measurement and Analysis of Partial Discharge Current during Square Voltage Waveforms

Synthesis and Efficiency of Voltage Stabilizers for XLPE Cable Insulation

Charging of Polymeric Surfaces by Positive Impulse Corona

A versatile method to study electrical treeing in polymeric materials

Tracking on Insulator Surfaces in Presence of Conductive Defects within Housing to Core Interface

Dielectric Properties and Resistance to Corona and Ozone of Epoxy Compositions Filled with Micro- and Nano-Fillers

Surface Charge Relaxation in Silicone Rubber and EPDM

Charge relaxation on surfaces of polymeric insulating materials for outdoor applications

South Africa Sets Focus on HVDC

Capacitance Measurements and Tree Length Estimation during Electrical Treeing in Sub-Picofarad Samples

Tracking Behaviour of Silicone Rubber in the Presence of Conductive Interfacial Defect

High voltages with high harmonic content: The influence of dielectric heating

Twisted pair sample subjected to square voltages: Measurements of dielectric properties during partial discharges

Insulator Selection for AC Overhead Lines With Respect to Contamination

Calculation of Corona Voltage-Current Characteristics in Air

High efficiency voltage stabilizers for XLPE cable insulation

Dielectric Response Measurements Utilizing Semi-Square Voltage Waveforms

Properties of interfaces between silicone rubber and epoxy

Need for more research on new material formulations

Effect of core magnetization on frequency response analysis (FRA) of power transformers

Determination of complex permeability of silicon steel for use in high-frequency modeling of power transformers

Voltage stabilizers for improving the electrical treeing resistance of XLPE

Measurement of Partial Discharges at Rapidly Changing Voltages

Revisiting nanotechnology

Salt fog evaluation of RTV coatings with different fillers

Comparison between Hexa- and Conventional E-type Core Three-Phase Transformers

Ageing of composite insulators

Understanding internal defects in hollow core composite insulators, will these always lead to accelerating ageing?

Electric performance of interfaces in outdoor insulation systems

Remotely controlled helicopters may revolutionize insulator diagnostics

High-frequency modeling of power transformers for use in frequency response analysis (FRA)

Comsol-Simulink integrated computer model for simulations of high voltage power transformers

Multi-scale computations of parameters of transformer windings at high frequencies. Part II

Multi-scale computations of parameters of transformer windings at high frequencies. Part I

Effect of Surface Charges on the Flashover Voltage Characteristics of Polymeric Materials: Comparison between Theory and Practice

Evaluation of polymeric materials resistance to corona and ozone

Properties of interfaces in silicone rubber

Voltage Stabilisers for XLPE in High Voltage Applications

Computer Simulations of Space Charge Dynamics and Electric Fields in HVDC Cable Insulation

Diagnostic methods for outdoor polymeric insulators

Reliable Diagnostics of HV Transfromers Insulation for Safety Assurance of Power Transmission System. REDIATOOL - an European Research Project

Charge Relaxation on Surfaces of Polymeric Insulating Materials for Outdoor Applications

Experimental Measurements and Computer Modeling of Charge Relaxation on Surfaces of Polymeric Insulating Materials

Computation of Parameters of Power Transformer Windings for Use in Frequency Response Analysis

Utilizing High Voltage Containing High Frequency Components for Continuous Dielectric Response Measurements during Aging

Apparatus Insulators Need More Attention from Researchers

High and Low Voltage Dielectric Response Measurements Utilizing Arbitrarily Shaped Waveforms

Detection of Surface Partial Discharges at Semi-Square Voltages

News On Diagnostics for Composite Insulators

Will We Be Ready for New Power System Solutions?

Testing interface quality in repaired sheds of composite insulators

Performance of Biologically Contaminated High Voltage Insulators

Performance of Silicone Rubber Insulators in Sri Lanka

Dielectric Spectroscopy Measurements on Power Transformers – Field Experiences

Infuence of Core Characteristics on Inductance Calculations for Modeling of Power Transformers

Are Nanocomposites the Materials of the Future?

Sri Lankan Network Re-Constructs Two Years After Tsunami

Dielectric response measurements utilizing non-sinusoidal waveforms

Field experiences with measurements of dielectric response in frequency domain for power transformer diagnostics

Partial discharges measured at semi-square voltages

Deterioration of internal interfaces between silicone and epoxy resin

Effects of the Insulation Quality on the Frequency Response of Power

On-line Partial Discharge Monitoring of Powerformer

Performance and Diagnostics of Biologically Contaminated Insulators

Exploring Possibilities for Characterization of POwer Transformer Insulation by Frequency Response Analysis (FRA)

Effects of the Insulation Quality on the Frequency Response of Power Transformers

Insulator Users Slow to React to Cleaner Environment

Reliable Diagnostics of HV Transformer Insulation for Safety Assurance of Power Transmission System, REDIATOOL – a European Research Project

Emerging Nanocomposite Dielectrics

High Voltage Valley in Ludvika

Frequency Response of Oil Impregnated Pressboard Samples for Estimating Moisture in Transformer Insulation

Numerical simulations of dielectric properties of composite material with periodic structure

Books About Insulators

Fluorescence lidar imaging of fungal growth on high-voltage outdoor composite insulators

Biological Contamination on Insulators

Effect of Biological Growths on Properties of Silicone Rubber Housings

Modelling of Charge Transport in a Hybrid Gas-Solid Insulation System

Dreamers are Still Around

Electrical Characterisation of New and Aged Semiconducting Glazes

Frequency Response Analysis (FRA) for Characterization of Power Transformer Insulation

Super-hydrophobicity: a New Property for HV Components

Sequential Comparative Study of Dielectric Response and Analyses of Oil and Paper from a Power Transformer Undergoing Repair

Model Based Frequency Response Analysis for Characterization of Transformer Insulation

Modern Outdoor Insulation – Concerns and Challenges

Influence of heat conductivity on the performance of RTV SIR coatings with different fillers

Comparative study of dielectric spectroscopy measurements and anayses of oil and paper samples from a transformer undergoing repair

Field Experiences with Measurements of Dielectric Response in Frequency Domain for Power Transformer Diagnostics

Assessment of Insulation State of Power Transformer after 35 years of Operation Using Different Diagnostic Methods

Development of New Test Set-up for Investigation of Electrical Tree Inception in Polyethylene

Evaluation of interfaces between silicone rubbers using a modified inclined plane test in salt fog

Image analysis and laser induced fluorescence combined to determine biological growth on silicone rubber insulators

Computer Modelling of Interaction of Gas Discharge Plasma with Solid Dielectric Barriers

Dielectric responses of new and aged transformer pressboard in dry and wet states

ISH Focuses on UHV

Techniques for estimation of biological contamination on insulators using image analysis

CIGRE Revises Material Properties for Insulators

Dreamers are Still Around

Numerical calculation of electric fields, losses and interfacial charge densities in water-treed dielectric composite structure

Application of Dielectric Spectroscopy Measurements for Estimating Moisture Content in Power Transformers

Dielectric Response Methods for Diagnostics of Power Transformers

Geometric Design in Composite Insulator Performance

New Laser Technique for Diagnostics of Composite Insulators

Image Analysis in Insulator Diagnostics

Performance and Ageing of Semi-Conducting Glaze Insulators

Lasers As a Tool to Test Silicone Rubber

Characterization of semiconducting glaze by dielectric spectroscopy in frequency domain

Polish Manufacturer Extends Range of Hollow-Core Insulators

Numerical simulations and experimental study of frequency-dependent dielectric properties of composite material with stochastic structure

Dielectric spectroscopy measurements on oil impregnated paper/pressboard samples

Material properties for non.ceramic insulation – state of the art

Applicability of the FRA method for characterization of insulation of power transformers

Experiences from on-site dielectric spectroscopy measurements on power transformers

Need to Better Characterize Polymers for Outdoor Applications

Dielectric Response Methods for Diagnostics of Power Transformers

Laser-induced fluorescence spectroscopy for detection of biological contamination on composite insulators

Numerical Simulations of High-Frequency Electrical Discharges Controlled by Dielectric Barriers

Modeling of Negative Streamer Propagation in a Weak Uniform Electric Field

Experimental study and numerical modelling of a dielectric barrier discharge in hybrid air-dielectric insulation

Dielectric Mixtures: Electrical Properties and Modeling

Dielectric Properties of Composite Structures: 3D Simulations versus Experiments

Active High Voltage Insulation

High-pressure plasmas for radar wave absorption

Remote and non-intrusive diagnostics of high-voltage insulation materials using laser-induced fluorescence spectroscopy

The Propagation of Positive Streamers in a Weak and Uniform Background Electric Field

Comparing Dielectric Properties of Binary Composite Structures Obtained with Different Calculation Tools and Methods

Performance of Different Insulator Designs in Tropical Environments and Diagnostic Possibilities

Use of digital image analysis for studying biological contamination on nonceramic insulators

Discharge Propagation in a Weak Homogeneous Electric Field

Electric Field Calculation in Gas Discharge Using Domain Transformation Technique

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

Electric Field Reduction in a Covered Electrode Gap due to Ionization and Charge Accumulation

Effects of Charge Accumulation in a Dielectric Covered Electrode System in Air