August 2015
Intermediate
550 pages
11h 8m
English
Content preview from Cable System Transients
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Chapter 2Impedance and Admittance Formulas
Akihiro Ametani
Graduate School of Electrical Engineering, Doshisha University, Kyoto, Japan
The impedance and admittance of a cable are expressed in a matrix form, because even a single-phase cable becomes a two-conductor system. The voltages and currents along the cable are related in the following matrix equations [1, 2].
2.1 
2.2 
where 
and 
are vectors of the voltages and currents at a distance x along the cable. 
and 
are square matrices of the impedance and the admittance.
In general, impedance and admittance matrices of a cable can be expressed in the following forms.
2.3 
2.4a 
2.4b
where is the potential coefficient matrix, and .
In the ...
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