Handbook

The electricity supply network is a critical infrastructure in present-day societies. It covers the generation, transmission, and distribution of bulk electricity from various sources (e.g., power stations, wind farms, solar farms) to the loads (industrial, commercial, domestic consumers). To this end, the grid comprises many different types of high-voltage high-power equipment and components, e.g., generators, transformers, transmission lines, switchgear, etc. This course provides essential knowledge of the technical challenges imposed on them in terms of the electrical, thermal, and mechanical operational requirements.

The topics covered in this course include: Overview of electricity supply network infrastructure; Electrical insulation in power system equipment and components: materials and dielectric properties, electric stress calculation, field grading; Overcurrent: electrodynamic forces, offset current transient, short-circuit thermal effects, protection (fuses, circuit breakers); Overvoltage: steady-state and transient, recovery voltage, surge propagation, protection (arresters), insulation coordination; Equipment rating: thermal equivalent circuit, steady-state temperature rise; High-voltage testing: power frequency overvoltage, lightning and switching impulse; Diagnostic methods for insulation assessment: insulation resistance, dielectric dissipation factor, partial discharge, dissolved gas-in-oil analysis.