Title :
Calculation of secondary cable losses and ampacity in the presence of harmonics
Author :
MelioPoulos, A. P Sakis ; Martin, M.A., Jr.
Author_Institution :
Sch. of Electr. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
fDate :
4/1/1992 12:00:00 AM
Abstract :
A simplified procedure for computing ohmic losses in secondary distribution cable systems by extending the Neher-McGrath model for 60 Hz losses is presented. Specifically, simplified formulae for evaluating ohmic losses due to harmonics are given. These results are subsequently used to compute the cable ampacity or the derating factor due to harmonics. The overall method is simple to follow and can be performed with a calculator. A typical example is given
Keywords :
harmonics; losses; power cables; 60 Hz; 60 Hz losses; Neher-McGrath model; cable ampacity; derating factor; ohmic losses; secondary cable losses; AC generators; Circuits; Conductors; Low voltage; National electric code; Power cables; Power system harmonics; Proximity effect; Temperature distribution; Transformers;
Journal_Title :
Power Delivery, IEEE Transactions on
