Описание: Chapter 1. Failure reasons of power transformers
1.1. Analysis of failure statistics of transformer structural elements
1.2. Technical and economic consequences of disruption of the normal operation of transformers
1.3 Aging (degradation) of insulation
1.4. Violation of the integrity of transformer windings
Chapter 2 Traditional technologies for condition monitoring of high-voltage transformer
2.1 Non-electrical control methods
2.1.1 Physical and chemical control methods
2.1.1.1 Chromatographic analysis of dissolved gases (GDA)
2.1.1.2 Physical and chemical indicators for assessing the state of paper insulation of power transformers in operation
2.1.2 Vibration control
2.2 Electrical test methods
2.2.1 Insulation monitoring using partial discharges (PD) registration
2.2.1.1 Methods for registering PD
2.2.1.2 Technical implementation of the idea of insulation diagnostics by registering PD
2.2.2 Measurement of no-load losses
2.2.3 Measuring the transformation ratio
2.2.4 Insulation resistance monitoring of transformer windings
2.2.5 Measurement of ohms resistance of windings
2.2.6 Monitoring by changes in resistance (inductance) short circuit
Chapter 3 Diagnostics of the condition of transformer windings by probing pulses of microsecond duration
3.1 Physical foundations and stages of development of impulse diagnostics
3.2 Development of pulse diagnostics technology
3.3 Frequency analysis as a development of impulse diagnostics
Chapter 4 Diagnostics of the transformer winding condition by probing pulses of nanosecond duration
4.1 Physical prerequisites for increasing the efficiency of the technology of pulse diagnostics (PD) by reducing the duration of the probe pulse.
4.2 Development of PD on physical and mathematical models of a power transformer
4.2.1 Development a physical model of a power transformer
4.2.2 Turn-to-turn short circuit detection
4.2.3 Passage of the probing pulse through the windings of the physical model of the transformer
4.2.3.1 Passage of the probing pulse through the LV winding
4.2.3.2 Passage of the probing pulse through the HV winding
4.2.4 De
