This book is devoted to one of the main problems of modern
electrical power engineering-power transformer diagnostics. The
first three chapters discuss the fundamentals: The first chapter
presents the physical reasons for power transformers' failures and
the technical and economic consequences of disruption of the normal
operation. The second chapter reviews the standard technologies for
monitoring the state of the high-voltage transformers. The third
chapter tells about monitoring the condition of transformer
windings based on the pulse method. The fourth chapter presents the
technologies for transformer windings condition controlled by means
of nanosecond pulses. The stages of improving the pulsed method
based on a short probing pulse of the nanosecond range, the results
of experiments on identifying the radial and axial displacements of
the winding, studies of the effect of the duration and shape of the
probing pulse on the sensitivity of the diagnostic procedure, and
the stages of developing a mathematical as well as physical model
of a power transformer are consistently presented.
General
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