Abstract
The impedance of a low voltage distribution network
is analyzed and presented. Data collected from field measurement
which was done over one week is used in this analysis. Basically,
a chirp is injected into the electric grid, and the voltage and
current signals (corrupted by various noises, including the 50 Hz
mains signal) are time-sampled and stored for processing. The
voltage and current are processed to obtain the impedance of the
electric grid. Simulations are performed to establish the efficacy
of the method of analysis used to obtain the impedance. The
sliding window method of the Discrete Fourier Transform (DFT)
is used in analyzing these impedance values. An eventual channel
model describing the network is also presented.