Title :
Time-domain analysis of transient electromagnetic field generated by aerial busbars above lossy soil
Author :
Lu, Tiebing ; Cui, Xiang ; Yin, Haoliu ; Li, Lin
Author_Institution :
Dept. of Electr. Eng., North China Electr. Power Univ., Hebei, China
fDate :
3/1/2002 12:00:00 AM
Abstract :
Based on multiconductor transmission lines (MTLs) and the antenna method, a hybrid method is proposed to analyze the transient electromagnetic fields due to the operation of switches in substations. The method is valid in either near or far field. At first, the wave process along the busbars is calculated by using the finite-difference time-domain method. Then the field is calculated by using electrical dipole theory. In order to take the effect of lossy soil into consideration with reason, the closed-form of the generalized Sommerfeld integral is calculated by using generalized pencil-of-function and an equation derived from the Sommerfeld identity, which saves much time. After a model of busbars in a 500-kV substation is set up, the transient electromagnetic field is predicated
Keywords :
antenna theory; busbars; dipole antennas; electromagnetic fields; finite difference time-domain analysis; multiconductor transmission lines; soil; switching substations; transient analysis; transmission line theory; 500 kV; aerial busbar; antenna method; electric dipole; finite difference time domain analysis; generalized Sommerfeld integral; generalized pencil-of-function; hybrid method; lossy soil; multiconductor transmission line; substation switch; transient electromagnetic field; Electromagnetic analysis; Electromagnetic fields; Electromagnetic transients; Integral equations; Multiconductor transmission lines; Power system transients; Substations; Time domain analysis; Transient analysis; Transmission line antennas;
Journal_Title :
Magnetics, IEEE Transactions on
