6533b856fe1ef96bd12b280e
RESEARCH PRODUCT
Critical issues in the PD testing methodology for XLPE-insulated MV cables: An experimental case
Antonino MadoniaEleonora Riva SanseverinoIvan TroiaStefano Franchi BononiSimone GianniniGiovanni Mazzantisubject
010302 applied physicsOperator (computer programming)Cables Cable testing MV cables Partial Discharges Partial Discharge Measurements Partial Discharge testing PD detection Wireless PD detection XLPE-insulated cablesSection (archaeology)Computer scienceAcoustics0103 physical sciencesExcoriationPartial discharge01 natural sciencesdescription
This paper describes some critical issues arising during the partial discharge (PD) testing of a 500m delivery length of an XLPE-insulated MV cable. At first, conventional PD measurements were performed on the whole length by using a standard acquisition system; PDs activity was detected, but the system allowed the operator to localize the PDs only on a length of 70 m. A visual inspection of this section highlighted the presence of an excoriation in the outer sheet. Aiming at a more accurate pin-pointing of the defect, more measurements were carried out in the proximity of the outer defect using a portable PD detection system. These measurements showed PDs activity, whose source was located and identified as consisting in internal defects on the inner semicon in proximity of the external excoriation. This proves how PD detection portable instruments are able, in cases like this, to locate the PD source and provide indications for its correct classification.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-10-01 | 2017 IEEE Conference on Electrical Insulation and Dielectric Phenomenon (CEIDP) |