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· 분류 : 외국도서 > 기술공학 > 기술공학 > 전력자원 > 전기 에너지
· ISBN : 9781138746169
· 쪽수 : 636쪽
· 출판일 : 2010-08-02
목차
Introduction
Historical Background
Uses in Power Systems
Core-Form and Shell-Form Transformers
Stacked and Wound Core Construction
Transformer Cooling
Winding Types
Insulation Structures
Structural Elements
Modern Trends
Magnetism and Related Core Issues
Basic Magnetism
Hysteresis
Magnetic Circuits
Inrush Current
Distinguishing Inrush from Fault Current
Optimal Core Stacking
Circuit Model of a Two-Winding Transformer with Core
Circuit Model of the Core
Two-Winding Transformer Circuit Model with Core
Approximate Two-Winding Transformer Circuit Model without Core
Vector Diagram of a Loaded Transformer with Core
Per-Unit System
Voltage Regulation
Reactance and Leakage Reactance Calculations
General Method for Determining Inductances and Mutual Inductances
Two-Winding Leakage Reactance Formula
Ideal Two-, Three-, and Multiwinding Transformers
Leakage Reactance for Two-Winding Transformers Based on Circuit Parameters
Leakage Reactances for Three-Winding Transformers
Phasors, Three-Phase Connections, and Symmetrical Components
Phasors
Wye and Delta Three-Phase Connections
Zig-Zag Connection
Scott Connection
Symmetrical Components
Fault Current Analysis
Fault Current Analysis on Three-Phase Systems
Fault Currents for Transformers with Two Terminals per Phase
Fault Currents for Transformers with Three Terminals per Phase
Asymmetry Factor
Phase-Shifting and Zig-Zag Transformers
Basic Principles
Squashed Delta Phase-Shifting Transformer
Standard Delta Phase-Shifting Transformer
Two-Core Phase-Shifting Transformer
Regulation Effects
Fault Current Analysis
Zig-Zag Transformer
Multi-terminal Three-Phase Transformer Model
Theory
Transformers with Winding Connections within a Phase
Multiphase Transformers
Generalizing the Model
Regulation and Terminal Impedances
Multiterminal Transformer Model for Balanced and Unbalanced Load Conditions
Rabins’ Method for Calculating Leakage Fields, Leakage Inductances, and Forces in Transformers
Theory
Rabins’ Formula for Leakage Reactance
Application of Rabins’ Method to Calculate the Self-Inductance of and Mutual Inductance between Coil Sections
Determining the B-Field
Determination of Winding Forces
Numerical Considerations
Mechanical Design
Force Calculations
Stress Analysis
Radial Buckling Strength
Stress Distribution in a Composite Wire-Paper Winding Section
Additional Mechanical Considerations
Electric Field Calculations
Simple Geometries
Electric Field Calculations Using Conformal Mapping
Finite Element Electric Field Calculations
Capacitance Calculations
Distributive Capacitance along a Winding or Disk
Stein’s Disk Capacitance Formula
General Disk Capacitance Formula
Coil Grounded at One End with Grounded Cylinders on Either Side
Static Ring on One Side of Disk
Terminal Disk without a Static Ring
Capacitance Matrix
Two Static Rings
Static Ring Between the First Two Disks
Winding Disk Capacitances with Wound-in Shields
Multistart Winding Capacitance
Voltage Breakdown and High-Voltage Design
Principles of Voltage Breakdown
Geometric Dependence of Transformer-Oil Breakdown
Insulation Coordination
Continuum Model of Winding Used to Obtain the Impulse-Voltage Distribution
Lumped-Parameter Model for Transient Voltage
Distribution
Losses
No-Load or Core Losses
Load Losses
Tank and Shield Losses Due to Nearby Busbars
Tank Losses Associated with the Bushings
Thermal Design
Thermal Model of a Disk Coil with Directed Oil Flow
Thermal Model for Coils without Directed Oil Flow
Radiator Thermal Model
Tank Cooling
Oil Mixing in the Tank
Time Dependence
Pumped Flow
Comparison with Test Results
Determining m and n Exponents
Loss of Life Calculation
Cable and Lead Temperature Calculation
Tank Wall Temperature Calculation
Tieplate Temperature
Core Steel Temperature Calculation
Load Tap Changers
General Description of Load Tap Changer
Types of Regulation
Principles of Operation
Connection Schemes
General Maintenance
Miscellaneous Topics
Setting the Impulse Test Generator to Achieve Close to Ideal Waveshapes
Impulse or Lightning Strike on a Transformer through a Length of Cable
Air Core Inductance
Electrical Contacts
References
Index