Identification and Location of PD Defects in Medium voltage Underground Power Cables Using High Frequency Current Transformer
Shafiq, Muhammad; Kiitam, Ivar; Taklaja, Paul; Kütt, Lauri; Kauhaniemi, Kimmo; Palu, Ivo (2019-07-24)
Shafiq, Muhammad
Kiitam, Ivar
Taklaja, Paul
Kütt, Lauri
Kauhaniemi, Kimmo
Palu, Ivo
Institute of Electrical and Electronics Engineers (IEEE)
24.07.2019
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi-fe2019103035824
https://urn.fi/URN:NBN:fi-fe2019103035824
Kuvaus
vertaisarvioitu
Tiivistelmä
Fault location is an important diagnostic task in condition monitoring of underground medium voltage cables. Available solutions are well capable of determining the location of a single partial discharge (PD) defect on a cable section. In case several PD defects are active simultaneously along a cable section, the interpretation of the measured data becomes complex to identify the presence of more than one PD sources. In this paper, experimental investigation of two PD defects/sources at different locations on a medium voltage (MV) cable section is presented. A high frequency current transformer is used for single end PD measurements. Time domain reflectometry-based in-depth study of the reflected pulses provides the most valuable information to identify the presence of PD sources which further leads to the location of the individual PD sources. In this paper, the proposed solution is presented for two PD sources, however, the same methodology can be extended to locate multiple PD sources on the cable.
Kokoelmat
- Artikkelit [2101]