Contenido Pantograph and Contact Line System

Pantograph and Contact Line System comprehensively introduces pantographs, contact lines and their interactions in many areas including geometrics, dynamics, materials, and electrics?helpful to understanding the basic theories of interaction between pantographs and contact lines. The book examines application techniques for system design, construction and maintenance, and includes suggestions to keep pantograph and contact lines working in a safe and stable manner over the long term. In railway traction power supply system, the match between pantograph and contact lines is critical for reliable power transfer. The book provides application techniques for system management and parameter selection in design, construction and maintenance.

This book is useful for people who are in catenary and pantograph-related areas such as college teachers and students, researchers and other professional and technical personnel in design, manufacture, construction, operation and maintenance.

Includes comprehensive coverage of all types of electric-powered trains
Presents pantographs and contact lines as a whole system
Explores electrical acting between pantograph and contact line systems for the first time
Summarizes techniques in geometrics, dynamics, materials and electrics
Establishes theories specific to pantograph and contact line systems
Applies theories of pantograph, contact lines and other interactions into system management and parameter selection in design, construction and maintenance
Provides the techniques applied in measurement and maintenance

Index

1 Introduction

1.1 Overview
1.2 Origin and Development of pantograph and Overhead contact Line Systems
  1.2.1. Origin of Pantograph and overhead Contact Line Systems
  1.2.2. Development of pantograph and overhead contact line systems
1.3.Requirement and Specification and Overhead contact line systems
  1.3.1. Geometrical requirement
  1.3.2. Mechanical Requirement
  1.3.3. Material Requirement
  1.3.4. Electrical Requirement
  1.3.5. Environmental Requirement
  1.3.6. Operation and maintenance requirement
1.4.Core issues of Pantograph and Overhead contact line systems and the framerwork
Brief Summary


2. Pantograph

2.1.Overview
2.2.Basic Structure of Pantograph
  2.2.1. Pantograph head
  2.2.2. Frame
  2.2.3. Base Frame
  2.2.4. Drive System
2.3.Characteristics of Pantographs
  2.3.1. Electric Performance
  2.3.2. Static Contact Force
  2.3.3. Aerodynamic Force
  2.3.4. Component of Dynamic Contact Force
  2.3.5. Contact Force
  2.3.6. Average Uplift Force
  2.3.7. Dynamic Characteristics
2.4.Main Test of Pantograph
2.5.Application and Development of Pantographs
  2.5.1. Low-Speed Stage
  2.5.2. Middle-Speed Stage
  2.5.3. High-Speed Stage
2.6.Application of Pantographs in Urban Rail Transit
Brief Summary


3. Geometric Properties of Pantograph and Contact Line

3.1.Overview
3.2.Gauge
3.3.Pantograph and Contact Line Areas
3.4.Geometric Properties of Pantographs
  3.4.1. Operating Range of Pantograph
  3.4.2. Geometric Profile of Pantograph Head
  3.4.3. Dynamic Envelope of Pantograph
3.5.Geometric Properties of Overhead Contact Line
  3.5.1. Lateral Shift of Contact Wire at Registration Point
  3.5.2. Lateral Shift of Contact Wire Under Side Wind
  3.5.3. Height of Contact Wire
  3.5.4. Slope of Contact Wire
  3.5.5. Steady Arm and Its Working State
  3.5.6. Tension Length and Overlap
  3.5.7. Contact Line Above Turnout
  3.5.8. Neutral Section
3.6.Geometrical Characteristics of Pantographs and Contact Lines on Typical High-Speed Railways
Brief Summary

4. Dynamic Interaction between Pantograph and Contact Line

4.1 Overviex
4.2 Elasticity and Nonuniformity Coefficient of Elasticity of Contact Line
4.3 Dynamic Property of Contact Line
  4.3.1.Propagation of Vibration Along Contact Wire
  4.3.2.Oscillatory Differential Equation of Contact Wire
  4.3.3.Fluctuation Propagation Speed
  4.3.4.Wave Reflection
  4.3.5.Doppler Coefficient
  4.3.6.Amplification Coefficient
  4.3.7.Natural Frequency of Catenary Suspension
  4.3.8 Dynamic Property of Typical Contact Line Design
4.4 Requirement for Dynamic Interaction
    Between Pantograph and Contact Line
  4.4.1.Uplift of Contact Wire
  4.4.2.Pantograph and Overhead Contact Line
        Contact Force
  4.4.3.Dynamic Interaction Between Pantograph and Contact Line With Double Pantograph
4.5 Measurement Requirements for Dynamic Interaction
    Between Pantograph and Contact Line
  4.5.1.Measurement Requirements of Pantograph and Overhead Contact Line Contact Force
  4.5.2.Requirements for Displacement Measurement
  4.5.3.Requirements For Arc Measurement
4.6 Simulation Requirement for Dynamic Interaction
    Between Pantograph and Contact Line
  4.6.1.Purpose and Target
  4.6.2.Pantograph Model
  4.6.3.Contact Line Model
  4.6.4.Simulation Parameters
  4.6.5.Output
  4.6.6.Verification of Simulationn System
  4.6.7.Reference Model
Bried Summary

5. Material Interface of Pantograph and Contact Line

5.1 Overview
5.2 Performance of Contact Material
  5.2.1.Mechanical Performance
  5.2.2.Electrical Performance
  5.2.3.Thermal Performance
5.3 Pantograph Strip
  5.3.1.Pure Metal Strip
  5.3.2.Powder Metallurgy Strip
  5.3.3.Pure Carbon Strip
  5.3.4.Metal-Impregnated Carbon Strip
5.4 Contact Wire
  5.4.1.Copper and Copper Alloy Contact Wire
  5.4.2.Composite Contact Wire
5.5 Material Combination of Strip and Contact Wire
  5.5.1.Matching Between Strip and Contact Wire
  5.5.2.Factors Influencing Abrasion of Contact Wire
Brief Summary

6. Electric Contact Properties of Pantograph and Contact Line

6.1 Overview
6.2 Static Electric Contact Between Pantograph and Contact Line
  6.2.1.Properties of Static Electric Contact
  6.2.2.Static Contact Resistance
  6.2.3.Factors Influencing Static Contact Resistance
  6.2.4.Steady-State Thermal Effect of Pantograph and Contact Line
6.3 Static Electric Contact Test
  6.3.1.Test Process and Data
  6.3.2.Analysis on Test Data
  6.3.3.Special Phenomenon in Test
  6.3.4.Calculation of Static Electric Contact Parameters
6.4 Sliding Electric Contact
  6.4.1.Mathematical Model of Transient Heat Conduction
  6.4.2.Pantograph and Overhead Contact Line Transient Heat Effect Generated by Starting Current
  6.4.3.Pantograph and Overhead Contact Line Transient Heat Effect Generatd by Short-Circuit Current
  6.4.4.Strip Heating During Current Collection by Pantograph
6.5 Open-Close Contact
  6.5.1.Basic Properties of Arc
  6.5.2.Cause of Electric Spark or Arc in Pantograph and Contact Line
  6.5.3.Thermal Analysis of Arc Erosion on Contact Wire
  6.5.4.Arc Phenomenon of High-Speed Pantograph and Overhead Contact Line System
6.6 Friction Abrasion Mechanism of Pantograph and Contact Line
Brief Summary

7. Design and Construction of Pantograph and Contact Line System

7.1 Overview
7.2 Basic Pantograph Requirements
7.3 Basic Requirements On Contact Line
7.4 System Design of Pantograph and Contact Line
  7.4.1.System Parament Calculation for Contact Line
  7.4.2.Simulation of Dynamic Interaction
        Between Pantograph and Contact Line
7.5 Selection of Equipment and Parts of Contact Line
  7.5.1.Mast and Foundation
  7.5.2.Support Device
  7.5.3.Registration Device
  7.5.4.Insulator
  7.5.5.Dropper
  7.5.6.Electric Connection
  7.5.7.Section Insulator
  7.5.8.Anchor Device and Midpoint Anchor
7.6 Construction Design for Contact Line
  7.6.1.Line Data
  7.6.2.Electric Sectioning
  7.6.3.Plane Layout
  7.6.4.Description
7.7 Construction of Contact Lines
  7.7.1.Construction Process
  7.7.2.Construction Calculation
  7.7.3.Static Accptance of Contact Line
  7.7.4.Dynamic Evaluation of Pantographs and Overhead Contact Line Systems
7.8 Handover and Operation
Brief Summary

8. Operation and Maintenance of Pantograph and Contact Line System

8.1 Overview
8.2 Operational Strategy for Pantographs and Contact Lines Covered by Ice
8.3 Swinging of Contact Line Wire
8.4 Burn and Protection of Contact Line Wires
8.5 Corrosion Property of Aluminum and Aluminum Alloy
8.6 Maintenance of Pantographs
  8.6.1.Maintenance
  8.6.2.Operation Condition Monitoring
  8.6.3.Maintenance Plan
8.7 Maintenance of Contact Line
  8.7.1.Technical Diagnosis
  8.7.2.Repair
Brief Summary

9. Parameter Measurement of Pantograph and Contact Line System

9.1 Overview
9.2 Measurement of Dynamic Characteristic Paramenters of Pantographs
  9.2.1.Measurement Frequency Response
  9.2.2.Structure Analysis
  9.2.3.Line Operation Simulation
9.3 Measurement of Spatial Position Parameters of Conctact Wires
  9.3.1.Portable Optical Measuring Device
  9.3.2.Onboard Measurement Device
9.4 Measurement of Elasticity of Contact Lines
9.5 Measurement of Pantographs and Overhead Contact Line Contact Forces
  9.5.1.Basic Principle
  9.5.2.Technical Description of Measuring Device
  9.5.3.Correction of Inertia Force of Strip
  9.5.4.Correction of Aerodynamic Force
9.6 Measuring Uplift Of Contact Wires at Registration Points
9.7 Measurement of Contact Line Temperatures
Brief Summary

REFERENCES

INDEX