Search Results - "Borsi, H."

A novel wideband partial discharge measuring circuit under fast repetitive impulses of static converters by Sargazi, R., Akbari, A., Werle, P., Borsi, H.

“…•A new circuit for PD measurement under pulsed shaped HV power supply is proposed.•Calibration of the PD circuit under impulse of converters becomes…”
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Dielectric spectroscopic measurements on transformer oil-paper insulation under controlled laboratory conditions by Setayeshmehr, A., Fofana, I., Eichler, C., Akbari, A., Borsi, H., Gockenbach, E.

“…For reliable operation of power transformers, the condition of the insulation system is essential. This paper reports on a detailed study of the effect of…”
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A new method for purposes of failure diagnostics and FRA interpretation applicable to power transformers by Pham, D. A. K., Pham, T. M. T., Borsi, H., Gockenbach, E.

“…To diagnose electrical and mechanical failures on the active part of power transformers efficiently, different state-of-the-art testing methods are recommended…”
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Behavior of machine insulation systems subjected to accelerated thermal aging test by Farahani, M, Gockenbach, E, Borsi, H, Schäfer, K, Kaufhold, M

“…Accelerated aging tests have been extensively used on motor and generator insulation systems to simulate in a short time period the deterioration mechanisms…”
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Effect of carbonized patterns on oil-impregnated aramid pressboards surface on acoustic emission signals at inhomogeneous electric field by Najafi, S. A. M., Gockenbach, E., Werle, P., Borsi, H.

“…The acoustic emission signals produced by discharges of a point-plane electrode on the surface (surface discharge) of different oil-impregnated aramid…”
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Dielectric response studies on insulating system of high voltage rotating machines by Farahani, M., Borsi, H., Gockenbach, E.

“…A significant method to characterize the electrical properties of materials and to evaluate the condition of the insulating systems is the dielectric response…”
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On the frequency domain dielectric response of oil-paper insulation at low temperatures by Fofana, I, Hemmatjou, H, Meghnefi, F, Farzaneh, M, Setayeshmehr, A, Borsi, H, Gockenbach, E

“…Results of Frequency Domain Spectroscopy measurements are known to be largely influenced by environmental conditions, such as the temperature. Because field…”
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Comparison of the D-dimer concentration in pregnant women with or without pulmonary thromboembolism by Borsi, Seyed, Shoushtari, Maryam, MalAmir, Mehrdad, Angali, Kambiz, Mavalizadeh, Maryam

“…Introduction and Objectives: Pulmonary thromboembolism is the third most common vascular disease after coronary heart disease and stroke and is approximately…”
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On-line monitoring and diagnoses of power transformer bushings by Setayeshmehr, A., Akbari, A., Borsi, H., Gockenbach, E.

“…Power transformers have been in service for many years under different conditions. Statistical studies have shown that failures of bushings are one of the main…”
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An investigation of dynamic mechanical, thermal, and electrical properties of housing materials for outdoor polymeric insulators by Ehsani, M., Borsi, H., Gockenbach, E., Morshedian, J., Bakhshandeh, G.R.

“…The present paper reports the results about a study of mechanical, thermal, dynamic mechanical and electrical properties of housing (weather shed) materials…”
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A PD measuring and evaluation system based on digital signal processing by Borsi, H.

“…Many current partial discharge (PD) fault diagnosing systems are based on conventional PD measurements with limited bandwidth. In this contribution, a modular…”
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An Investigation of Thermal, Physical, and Electrical Properties and Morphological Behavior on Nanoepoxy Composite Insulation by Farhadinejad, Z., Ehsani, M. M., Moemenbellah, S. S., Alavi, S. M. B., Saei-Shirazi, M. M., Borsi, H.

“…Epoxy nanocomposites prepared by casting epoxy reinforced with silica flour and stiff spherical alumina nanoparticles were investigated for its electrical,…”
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Fundamental investigations on some transformer liquids under various outdoor conditions by Fofana, I., Borsi, H., Gockenbach, E.

“…This paper deals with humidity uptake of some transformer liquids and its influence on electrical breakdown. The investigations were performed under some…”
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Polarization and Depolarization Current measurements of oil impregnated paper insulation system under thermal runaway by Fofana, I, Hemmatjou, H, Farzaneh, M, Gockenbach, E, Borsi, H

“…In the current research work, systematic investigations on the influence of thermal transients on the Polarization and Depolarization Current (PDC)…”
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Dielectric behavior of insulating liquids at very low frequency by Shayegani Akmal, A.A., Borsi, H., Gockenbach, E., Wasserberg, V., Mohseni, H.

“…Dielectric spectroscopy in the wide frequency range of 1 mHz to 1 kHz has been used to study the polarization and conduction phenomena in insulating liquids…”
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Investigations of diagnostic tools for insulation systems of high voltage rotating machines by Gockenbach, E, Farahani, M, Borsi, H

“…In this work the results of extensive investigations on the behaviour of a solid insulation system for rotating high voltage machines with thermal class F…”
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Specific investigations to quantify heavy damage causes on loading resistor modules by Fofana, I., Wasserberg, V., Borsi, H., Gockenbach, E., Farzaneh, M.

“…In this paper, premature damage to some static inverter loading resistor modules is analyzed. Furthermore, investigations were carried out to determine the…”
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Diagnosing Shorted Turns on the Windings of Power Transformers Based Upon Online FRA Using Capacitive and Inductive Couplings by Behjat, V., Vahedi, A., Setayeshmehr, A., Borsi, H., Gockenbach, E.

“…Interturn faults are a significant problem in power transformers that can eventually burgeon into catastrophic faults and likely result in an overall network…”
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Preliminary investigations for the retrofilling of perchlorethylene based fluid filled transformer by Fofana, I., Wasserberg, V., Borsi, H., Gockenbach, E.

“…The main results from investigations aiming into the retrofilling conditions of a transclene (perchlorethylene based liquid) filled transformer are presented…”
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A method for the evaluation of insulation systems for high voltage rotating machines by Farahani, M., Gockenbach, E., Borsi, H., Kaufhold, M.

“…Partial Discharge Pattern of three important types of defects in insulation systems of high voltage rotating machines (the internal defect, the damaged…”
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