Title :
High impedance fault arcing on sandy soil in 15 kV distribution feeders: contributions to the evaluation of the low frequency spectrum
Author :
Emanuel, A.E. ; Cyganski, D. ; Orr, J.A. ; Shiller, S. ; Gulachenski, E.M.
Author_Institution :
Worcester Polytech. Inst., MA, USA
fDate :
4/1/1990 12:00:00 AM
Abstract :
The measured values of current harmonics at a staged high-impedance ground fault on sandy soil are presented. The measured low-frequency spectrum is compared with current harmonics recorded continuously for one week at the substation. This comparison was carried out to determine to what extent 120 Hz and 180 Hz components can be used to help detect a high-impedance fault. The field measurements are supported by a simple theoretical model and laboratory measurements. It is concluded that, for the studied feeder, detection of high-impedance arcing faults may be possible by monitoring of the second-harmonic current
Keywords :
arcs (electric); distribution networks; electric impedance; electrical faults; harmonics; soil; 120 Hz; 15 kV; 180 Hz; current harmonics; distribution feeders; fault arcing; high-impedance ground fault; low frequency spectrum; sandy soil; Arc discharges; Circuit faults; Conductors; Current measurement; Fault detection; Frequency; Impedance; Soil measurements; Substations; Testing;
Journal_Title :
Power Delivery, IEEE Transactions on
