High Voltage Engineering - Practice and Theory

Автор: Chief_Admins / Дата: пт, 12/01/2017 - 21:17 /

1 INTRODUCTION TO HIGH VOLTAGE POWER SYSTEMS
1.1 Historical Overview
1.2 Power Network
1.2.1 Energy sources and energy conversion
1.2.2 Generators
1.2.3 Substations
1.2.4 Power lines and cables
1.3 Basic Equipment
1.3.1 Power lines: towers, conductors, metalware and insulators
1.3.2 Underground power cables
1.3.3 Bushings
1.3.4 Power transformers
1.3.5 Instrument transformers
1.3.6 Line traps (LT’s)
1.3.7 Circuit breakers and fuses
1.3.8 Isolators
1.4 Conclusion
1.5 Review Questions
2 FIELDS
2.1 Introduction: Field concepts
2.2 Electrostatic Fields
2.2.1 Uniform fields
2.2.2 Non-uniform fields
2.2.3 Bundle conductors and grading
2.2.4 Mixed dielectrics
2.2.5 Capacitive coupling
2.2.6 Isolators
2.3 Magnetic Fields
2.3.1 Magnetic induction: inductive coupling
2.4 Electrical Conduction Fields
2.5 Thermal Fields
2.6 Health Effects
2.7 Field Analysis Methods
2.8 Review Questions
3 HIGH VOLTAGE INSULATING MATERIALS
3.1 Gases
3.1.1 Ionization
3.1.2 Electronegative gases, attachment and de-ionization
3.1.3 Self-sustained gas discharges: Townsend discharges
3.1.4 Self-sustained gas discharges, streamer discharges
3.1.5 Flashover of uniform gaps: Paschen’s Law
3.1.6 Flashover of non-uniform gaps: the polarity effect
3.1.7 Flashover mechanism of long gaps: Leader mechanism
3.1.8 Flashover, sparks and arcs
3.1.9 Corona discharges
3.2 Solid and Liquid Insulating Materials
3.2.1 Dielectric constant (ε)
3.2.2 Losses in dielectrics (tan δ)
3.2.3 Typical solid insulating materials
3.2.4 Failure mechanisms of solid insulating materials
3.2.5 Liquid insulating materials
3.2.6 Failure mechanisms of insulating liquids
3.3 The Performance of Combinations of Gases, Solids and Liquids in Insulation
Systems

3.3.1 Parallel insulating materials
3.3.2 Series insulating materials
3.4 Insulator pollution
3.4.1 The dimensioning of insulators for polluted environments
3.4.2 Form Factor Calculation
3.5 Summary of Properties of Typical Insulating Materials
3.6 Review Questions
4 HIGH VOLTAGE TESTING AND MEASUREMENT
4.1 Generation of High Voltages
4.1.1 Power frequency voltage and current (AC)

4.1.2 DC Voltage
4.1.3 Lightning and switching impulses
4.2 Measurement
4.2.1 Voltage dividers
4.2.2 Peak and RMS voltmeters
4.2.3 Sphere gaps for voltage measurement
4.2.4 Electrostatic voltmeters
4.3 Laboratory Testing
4.3.1 Interpretation of AC, DC and Impulse test results

4.3.2 Non-destructive tests
4.4 Review Questions
5 OVERVOLTAGES AND INSULATION CO-ORDINATION
5.1 Insulation Co-ordination

5.2 Basic principles
5.2.1 Standard insulation levels

5.3 Power System Overvoltages
5.3.1 Power frequency overvoltages
5.3.2 Switching overvoltages
5.3.3 Lightning overvoltages
5.4 Surge Protection
5.5 Coordinated wood pole insulation coordination
5.6 Specifications
5.7 Review Questions
6 HIGH VOLTAGE SAFETY PRINCIPLES
6.1 Liability Aspects

6.1.1 Effect of electrical currents on the human body
6.1.2 Electrical clearances
6.1.3 Safety signs and working procedures
6.2 Capacitive and Inductive Coupling, Floating Objects, Current Loops
6.3 Safety Earthing
6.4 Working earths
6.5 Step and Touch Potential, Equipotential Platforms and Voltage Transfer
6.6 Safety in the High Voltage Laboratory
6.7 Review Questions
7 BIBLIOGRAPHY

Appendix A: HIGH VOLTAGE LABORATORY PRACTICAL Experiments. DC and AC Flashover and Corona

Appendix B: HIGH VOLTAGE LABORATORY PRACTICAL Experiments. AC Flashover of Insulators and other Demonstrations

Appendix C: HIGH VOLTAGE LABORATORY PRACTICAL Experiments. IMPULSE TESTING

Высоковольтное оборудование (свыше 1000 В)

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