Title :
Modeling of impedance vs. frequency in harmonics analysis programs
Author :
Sutherland, Peter E.
Author_Institution :
GE Power Syst., Schenectady, NY, USA
Abstract :
Recently reported results give measurements of the resistance and inductance of power cables and transformers vs. frequency. In harmonics analysis computer programs, various methods, including linear and exponential approximations and eddy current factors are used to model the increase of resistance with frequency, while the inductance is assumed to be constant. The measured results from the paper of Rhode, Kelley and Saran (1996) are used in this paper to evaluate the accuracy of various models
Keywords :
approximation theory; electric impedance; power cables; power system analysis computing; power system harmonics; power transformers; computer simulation; eddy current factors; exponential approximations; impedance-frequency relationship; linear approximations; modelling accuracy; power cables; power system harmonics analysis programs; power transformers; Eddy currents; Electrical resistance measurement; Frequency; Harmonic analysis; Impedance; Inductance measurement; Linear approximation; Power cables; Power measurement; Transformers;
Conference_Titel :
Industry Applications Conference, 1997. Thirty-Second IAS Annual Meeting, IAS '97., Conference Record of the 1997 IEEE
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-4067-1
DOI :
10.1109/IAS.1997.626376
