High Voltage Course

Lesson 1 • High Voltage Generation Principles

Explains how high voltages are produced via transformers, multipliers, and impulse generators. Connects generation methods to test and transmission applications.

Lesson 2 • Hazards and Risk Overview

Identifies electrical shock, arc flash, and induced voltage hazards specific to high voltage environments. Sets the safety mindset required before hands-on work.

Lesson 3 • Electric Field Fundamentals

Covers electric field intensity, flux density, and permittivity in dielectric media. Links field theory to insulation design and breakdown risk.

Lesson 1 • Partial Discharge in Insulation

Explains partial discharge (PD) inception, propagation, and damage mechanisms. Introduces PD measurement as a diagnostic tool covered in later chapters.

Lesson 2 • Insulation Coordination Principles

Introduces clearance, creepage, and withstand voltage selection for system reliability. Provides the design logic applied in equipment chapters.

Lesson 3 • Liquid and Gas Insulation

Analyses mineral oil, ester fluids, SF6, and dry air as insulating media. Compares performance, environmental impact, and maintenance requirements.

Lesson 4 • Solid Insulation Systems

Covers polymers, ceramics, and composite insulators used in cables, transformers, and switchgear. Addresses ageing mechanisms and service life estimation.

Lesson 1 • Overvoltage and Surge Phenomena

Classifies lightning, switching, and temporary overvoltages and their waveform characteristics. Prepares students for surge protection design covered in later chapters.

Lesson 2 • Gas Discharge Physics

Covers ionization, avalanche multiplication, and the Townsend mechanism in gases. Establishes the theoretical basis for spark and arc formation.

Lesson 3 • Solid Dielectric Breakdown

Examines intrinsic, thermal, and electromechanical breakdown in solid insulators. Links failure modes to material selection and field grading design.

Lesson 4 • Corona Discharge Phenomena

Describes corona onset, types, and effects on conductors and insulators. Addresses corona as both a diagnostic indicator and a source of equipment degradation.

Lesson 1 • High Voltage Cables

Examines XLPE, oil-filled, and gas-insulated cable designs for transmission and distribution. Addresses screen design, jointing, and termination requirements.

Lesson 2 • Power Transformers

Covers winding design, insulation systems, cooling methods, and tap changers in power transformers. Connects transformer construction to dielectric and thermal performance.

Lesson 3 • Surge Arresters and Protective Devices

Explains metal oxide varistor (MOV) arresters, spark gaps, and surge capacitors. Connects protective device selection to insulation coordination principles.

Lesson 4 • Instrument Transformers

Covers current and voltage transformer accuracy classes, burden, and saturation behaviour. Connects measurement accuracy to protection system performance.

Lesson 1 • Dielectric Loss and Capacitance Testing

Covers tan delta measurement, capacitance bridge methods, and frequency domain spectroscopy. Connects dielectric loss trends to moisture and ageing assessment.

Lesson 2 • AC High Voltage Testing

Covers power-frequency withstand, induced voltage, and resonant test methods. Addresses test circuit design and voltage measurement accuracy.

Lesson 3 • Partial Discharge Testing

Applies PD measurement techniques including IEC-method, UHF, and acoustic detection. Connects PD test results to insulation defect identification.

Lesson 4 • DC High Voltage Testing

Examines DC withstand, leakage current, and polarisation index tests for cables and rotating machines. Connects DC test results to insulation condition assessment.

Lesson 1 • Overhead Transmission Line Design

Covers conductor selection, sag-tension calculations, and tower geometry for HV lines. Connects mechanical and electrical design to reliability and corona performance.

Lesson 2 • Substation Layout and Equipment Arrangement

Examines AIS, GIS, and hybrid substation configurations and their space and reliability trade-offs. Connects layout choice to insulation coordination and maintenance access.

Lesson 3 • Substation Earthing Systems

Covers earth grid design, step and touch voltage limits, and soil resistivity measurement. Connects earthing performance to personnel safety and equipment protection.

Lesson 4 • Line Parameters and Wave Propagation

Analyses resistance, inductance, capacitance, and conductance of transmission lines. Introduces travelling wave theory applied to surge analysis.

Lesson 1 • Overcurrent and Distance Protection

Covers time-overcurrent, directional, and distance relay characteristics for lines and feeders. Connects relay settings to fault current levels and coordination margins.

Lesson 2 • Fault Detection and Localization

Covers fault impedance calculation, travelling wave fault location, and impedance-based methods. Connects accurate fault location to reduced outage time and maintenance cost.

Lesson 3 • Protection System Fundamentals

Defines reliability, selectivity, speed, and sensitivity as protection design criteria. Establishes the performance framework applied to all relay schemes in this chapter.

Lesson 4 • SCADA and Substation Automation

Examines IEC 61850 architecture, SCADA integration, and intelligent electronic device (IED) communication. Connects automation to faster fault clearance and remote control capability.

Lesson 1 • Preventive and Predictive Maintenance

Compares time-based, condition-based, and reliability-centred maintenance strategies. Connects maintenance approach selection to cost, risk, and equipment criticality.

Lesson 2 • Incident Investigation and Lessons Learned

Applies root cause analysis and failure mode review to HV equipment incidents. Connects investigation findings to systemic improvements in design and maintenance practice.

Lesson 3 • Asset Lifecycle and Risk Management

Covers asset health indexing, end-of-life assessment, and capital investment prioritisation. Connects lifecycle data to strategic replacement and refurbishment decisions.

Lesson 4 • HV Safety Procedures and Work Practices

Covers lockout/tagout, safe approach distances, and permit-to-work systems for HV environments. Connects procedural compliance to accident prevention and regulatory conformance.