The high-frequency behavior of the stator winding is synthesized herein using a multiconductor transmission line model to study potential location excessive voltage stress, being main cause insulation failure within winding. comprehensive modeling approach proclaims that distribution result antiresonance phenomenon, which can be characterized by two oscillatory responses. One response may lead ...

Partial discharges (PD) measurement provides valuable information for the condition assessment of the insulation status of high-voltage (HV) electrical installations. During the last three decades, several PD sensors and measuring techniques have been developed to perform accurate diagnostics when PD measurements are carried out on-site and on-line. For utilities, the most attractive characteri...

In order to ensure the safe operation of submarine cables, it is great significance analyse insulation state cables from perspectives microstructure, carrier transport characteristics and macroscopic dielectric properties. this study, based on high-voltage frequency domain spectroscopy (HV-FDS) measurement system, HV-FDS experiments fresh thermally aged were carried out under continuous (0.5, 2...

Voltage stabilizers are additives capable of inhibiting electrical treeing; a degradation mechanism for insulation materials subjected to strong divergent electric fields. The intended use is in cross-linked polyethylene (XLPE) high voltage power cable insulation where minute defects in the manufacturing process can give rise to the conditions needed for the initiation of treeing, which in the ...

In electrical power engineering equipment like cables, transformers and switchgears high voltages occur which have to be isolated in a safe and reliable way. Thus the used insulation systems are very sensitive parts of such components, especially regarding the long required lifetime of more than 30 years. Especially for insulation systems made up of solid materials (resins, elastomers, thermopl...