In this paper the AC and DC partial discharge inception voltages, PDIV, are modeled and validated through measurements performed on multi-layer flat specimens with artificial defects. The results highlight that, depending on temperature and material conductivity, there can be a large difference between PDIV under DC and AC, which depends on insulation temperature, thus, e.g., cable loading. Indeed PDIV-DC can be much larger than PDIV-AC at room temperature, but the two values can be very close (with PDIV-DC being even smaller than PDIV-AC) at maximum operating temperature, i.e. full load.
Seri P., Cirioni L., Naderiallaf H., Montanari G.C., Hebner R., Gattozzi A., et al. (2019). Partial Discharge Inception Voltage in DC insulation systems: A comparison with AC voltage supply. Institute of Electrical and Electronics Engineers Inc. [10.1109/EIC43217.2019.9046630].
Partial Discharge Inception Voltage in DC insulation systems: A comparison with AC voltage supply
Seri P.;Cirioni L.;Naderiallaf H.;Montanari G. C.;
2019
Abstract
In this paper the AC and DC partial discharge inception voltages, PDIV, are modeled and validated through measurements performed on multi-layer flat specimens with artificial defects. The results highlight that, depending on temperature and material conductivity, there can be a large difference between PDIV under DC and AC, which depends on insulation temperature, thus, e.g., cable loading. Indeed PDIV-DC can be much larger than PDIV-AC at room temperature, but the two values can be very close (with PDIV-DC being even smaller than PDIV-AC) at maximum operating temperature, i.e. full load.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
