Learning track
Power Systems Fundamentals
Generation, transmission, power flow, synchronous machines, faults and protection — the core of power engineering.
What Is a Power System?
The big picture: generation, transmission, distribution and loads — and why voltage keeps changing along the way.
Three-Phase Power Basics
Why three phases, star vs. delta connections, and how to move between line and phase quantities.
Real, Reactive & Apparent Power
P, Q, S, the power triangle, and why power factor matters for the whole grid.
Transformers
How mutual induction transfers power between windings, three-phase connections, autotransformers, and instrument transformers (CTs/VTs).
The Per-Unit System
Why engineers normalize every quantity to a base value, and how it makes transformers vanish from calculations.
Transmission Line Parameters
R, L, C and G — and why short, medium and long lines each need a different equivalent circuit.
Introduction to Power Flow
Slack, PV and PQ buses, why the equations are nonlinear, and how Newton-Raphson solves them.
Faults & Protection Basics
Common fault types, why fast clearing matters, and how breakers, relays and fuses work together.
Synchronous Machines
Stator, rotor and excitation, synchronous speed, the swing equation, P–δ and Q control, and the reactances that shape fault current.
Symmetrical Components & Fault Calculation
Positive, negative and zero sequence, sequence networks, and how to calculate SLG, LL, LLG and three-phase fault currents.