Regardless of many available advanced detection algorithms,
the detection of HiZ remains a challenging problem and this
is an actual research and developing problem in electrical
power engineering. Only levels of total harmonic disorder
(THD) were prominent parameter during different tests. Other
parameters like level of particular harmonics (even or odd),
arcing and energy burst were not detected to be prominent
and therefore it is concluded that any signature recognition
techniques would not be useful in AADC network.