Title :
The effect of voltage distortion on ageing acceleration of insulation systems under partial discharge activity
Author :
Fabiani, D. ; Montanari, G.C.
Abstract :
This paper focuses on the features of harmonic distortion which may affect significantly the reliability of typical ac-power network equipment, such as low-voltage self-healing capacitors used for reactive power and harmonic compensation. Moreover, the effect of high-frequency pulse-like voltage generated by Adjustable Speed Drives (ASD) on electrical machine insulation is also investigated, resorting to life tests carried out on different insulating materials of the standard and "corona resistant" type, at electrical field levels able to incept partial discharges (PD).
Keywords :
ageing; capacitors; harmonic distortion; insulation testing; life testing; machine insulation; partial discharges; variable speed drives; AC power network equipment; adjustable speed drive; ageing acceleration; electric field; electrical machine insulation; electronic power converter; harmonic compensation; harmonic distortion; insulation system; low-voltage self-healing capacitor; multistress life testing; partial discharge; reactive power compensation; reliability; voltage distortion; Accelerated aging; Capacitors; Dielectrics and electrical insulation; Harmonic distortion; Partial discharges; Power system harmonics; Power system reliability; Reactive power; Variable speed drives; Voltage;
Journal_Title :
Electrical Insulation Magazine, IEEE
