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Dissolved Gas Analysis is one of the best known
methods to detect incipient faults in power
transformers. Characteristic gases for power
transformers are defined in IEC 60599. However,
these gases migrate between the transformer liquid
and solid insulation due to temperature variations;
this could potentially cause errors in the fault
detection method. Little analytical or experimental
work has been performed to date on the temporal
nature of this problem.
The suggested dynamic model in this book is based on
the process of diffusion. The steady-state
information extracted from experiments is compared
with findings obtained from the literature. The
final dynamic model is tested against experiments.
The results show that the migration phenomenon in
the liquid-solid insulation of power transformers
can be explained by diffusion equations. Other
findings include diffusion coefficients and steady-
state information of the characteristic gases in the
transformer insulation system. This text is suitable
for researchers who work in the area of fault
detection in high voltage fluid-filled equipment or
students who are interested in mass transport
phenomena.
methods to detect incipient faults in power
transformers. Characteristic gases for power
transformers are defined in IEC 60599. However,
these gases migrate between the transformer liquid
and solid insulation due to temperature variations;
this could potentially cause errors in the fault
detection method. Little analytical or experimental
work has been performed to date on the temporal
nature of this problem.
The suggested dynamic model in this book is based on
the process of diffusion. The steady-state
information extracted from experiments is compared
with findings obtained from the literature. The
final dynamic model is tested against experiments.
The results show that the migration phenomenon in
the liquid-solid insulation of power transformers
can be explained by diffusion equations. Other
findings include diffusion coefficients and steady-
state information of the characteristic gases in the
transformer insulation system. This text is suitable
for researchers who work in the area of fault
detection in high voltage fluid-filled equipment or
students who are interested in mass transport
phenomena.