High Voltage Engineering: Designing a Reliable and Economic Insulation System (London)

HRODC Postgraduate Training Institute
En Central London (Inglaterra)

£8.000 - ($6.406.393)

Información importante

  • Training
  • Advanced
  • Central london (Inglaterra)
  • 60 horas de clase
  • Duración:
    2 Weeks
  • Cuándo:
    A definir

Suitable for: This course is designed for: Electrical Engineers, Master Electricians, Maintenance Electricians, Electrical Contractors, Utility and Industrial Electrical Engineers and Engineering Technicians, Industrial Line Workers, Project Engineers, Design Engineers, Field Technicians, Etc.

Información importante

Requisitos: Degree or Work Experience


¿Dónde se da y en qué fecha?

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Central London
Carburton Street, W1W 5EE, London, Inglaterra
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¿Qué aprendes en este curso?

Electrical Engineering
High Voltage Engineering
Paschen’s Law
Minimum Breakdown Voltage
Breakdown in Non-Uniform Field
Corona Current
Return Stroke Current
Energy in Lightning
Breakdown in Liquids
Breakdown in Solids
Breakdown of Composite Dielectrics
Impulse Voltages
Measurement of High Voltage
Digital Records for Impulse Measurements
Overvoltage Transients in Power Systems
High Voltage Testing of Power System Equipment
Switching Overvoltages
Insulation Coordination


Course Contents, Concepts and Issues:

Breakdown Mechanism in Gases under Static Uniform Field

  • What is Breakdown of Insulators?
  • Electric Field and Stress
  • Bohr’s Atomic and Model
  • Ionization
  • Ionization Processes
  • Ionization by Collision
  • Photo-Ionization
  • Ionization on the Surface of Electrodes
  • Townsend’s Mechanism
  • Time Lag for Breakdown
  • Streamer Theory of Breakdown Gases
  • Townsend’s Mechanisms vs. Streamer Mechanisms
  • Post-Breakdown Current – Voltage Characteristics
  • Recovery of Electric Field Strength

Breakdown Characteristics of Gases under Uniform Field

  • Explanations on α and γ
  • Paschen’s Law
  • Minimum Breakdown Voltage
  • Effect of Temperature
  • De-Ionization
  • Desirable Properties of Gaseous Insulator
  • Sulphur Hexafluoride (SF6) As Insulator
  • Vacuum as Dielectric
  • Factors Affecting Time Lag For Breakdown
  • Breakdown in a Uniform AC Field
  • Breakdown under Impulse Voltage
  • Practical Breakdown Characteristics

Breakdown of Gases in a Non-Uniform Field

  • Breakdown of Gases in Uniform and Non-Uniform Fields
  • Degree of Non-Uniformity
  • Breakdown in Non-Uniform Field
  • Effect of Space Charge on the Breakdown Voltage
  • Effect of Pressure on Corona Inception and Breakdown Voltage
  • Corona Inception Stress in Air
  • Corona Current
  • Corona Loss in Air

Lightning Phenomenon

  • Defining Lightning
  • Charge Formation in Cloud
  • Different Form of Lightning
  • Cloud Flashes
  • Air Discharges
  • Forked Lightning or Lightning Stroke To Ground
  • Mechanism of Forked Lightning
  • Multiple Strokes
  • Return Stroke Current
  • Energy in Lightning

Breakdown in Liquids and Solids

  • Introduction
  • Breakdown in Liquids
  • Classification of Liquids
  • Liquid Breakdown Test Cells
  • Breakdown in Pure Liquids
  • Breakdown in Commercial Liquids
  • Breakdown in Solids
  • Intrinsic Breakdown
  • Electromechanical Breakdown
  • Thermal Breakdown
  • Mechanisms of Breakdown Occurring After Prolonged Operation
  • Breakdown of Composite Dielectrics

Generation of High Voltages

  • Introduction
  • Impulse Voltages
  • Characteristics
  • Single-Stage Impulse Generator Circuits
  • Multi-Stage Impulse Generators
  • Construction Features of Impulse Generators
  • Generation of Switching Impulse Voltages
  • Generation of High Alternating Voltages
  • Testing Transformers
  • Cascaded Transformers
  • Series Resonant Circuits
  • Generation of High Direct Voltages
  • Characteristics Parameters
  • Fundamentals of Rectifier Circuits
  • Voltage Double Circuit
  • Cascade Circuit
  • Van de Graff Generator

Measurement of High Voltage

  • Introduction
  • Measurement of High Alternating Voltages
  • Peak Voltage Measurement with Sphere-Gaps
  • Peak Voltage Measurement Using Measuring Capacitors
  • Peak Value Measurement with Capacitor Voltage Divider
  • Measurement of RMS Values by Electrostatic Voltmeters
  • Capacitance Voltage Transformer (CVT)
  • Digital Recording
  • Measuring of High Direct Voltages
  • Electrostatic Voltmeters
  • Generating Voltmeter
  • Sphere-Gap
  • Measurement of Ripple Voltages
  • Measurement of Impulse Voltages
  • Peak Value Measurement Using a Sphere-Gap
  • Voltage Dividers
  • Resistive Voltage Divider
  • Capacitance Voltage Dividers
  • Delay Cables
  • Measurement of Peak Voltage by an Indicating Electronic Device
  • Digital Records for Impulse Measurements

Overvoltage Transients in Power Systems

  • Basic Concepts of Transients
  • Classification of Power System Transients
  • Lightning Overvoltage
  • Interaction between Lightning and the Power System
  • Propagation of Lightning Current and Voltage along Transmission Lines
  •  Shape of Lightning Voltage Waves
  • Reflection and Refraction of Rectangular Travelling Waves
  • Successive Reflections
  • Ground Wires
  • Switching Overvoltages
  • Transient Initiated By the Clearing of a Fault
  • Switching Overvoltages Due To Disconnection of an Unloaded Transformer
  • Overvoltage Due To Capacitance Switching
  • Overvoltage Due To Ferro-Resonance
  • Power Frequency Overvoltages
  • Control of Overvoltages Due To Switching
  • Transformer Winding Behaviour under Transient Conditions
  • Protection of System Insulation against Transient Overvoltages
  • Insulation Coordination

High Voltage Testing of Power System Equipment

  • Introduction
  • Terms Used In Standards
  • High Voltage Tests on Line Insulators
  • Arrangement of Insulators for Test
  • Power Frequency Tests
  • Impulse Tests
  • Impulse Withstand Voltage Tests
  • Pollution Testing
  • High Voltage Test on Bushings
  • High Voltage Tests on Transformers
  • Induced and Applied Overvoltage Tests
  • Impulse Testing Of Transformers
  • Lightning Impulse Testing
  • Switching Impulse Tests
  • High Voltage Tests on Cables
  • Non-Destructive High Voltage Tests
  • Measurement Capacitance and Dissipation Factor
  • Partial Discharge Measurements
  • Tests on Lightning Arresters
  • Impulse Current Test

Información adicional

HRODC Postgraduate Training Institute is registered with the UK Registry of Learning Providers (UKRLP) of the Department for Business, Innovation and Skills (BIS), formerly Department of Innovation, Universities and Skills (DIUS). Its registration number is 10019585 and can be verified at http://www.ukrlp.co.uk/