Online Courses: Introduction to Power Systems (The University of Manchester– UK)

Lecture (1) Introduction to Power System Analysis

Major power system components

What is Power System Analysis?

Definition (Power System Analysis)

It is the sub-discipline of electric power engineering concerned with the study of the behavior of electric power systems under a variety of possible operational conditions (“normal”, “faulted”, etc.)

PSA relies on knowledge and methods from

ü  Physics: System modeling, electromagnetic field theory, classical mechanics.

ü  Circuit theory: AC circuits & phasors, 3-phase networks.

ü  Mathematics: Linear algebra, differential equations, numerical methods.

Core Tools of Power System Analysis

Basic PSA tools fall into 2 categories depending on the state of operation of the system

1.    Static. Studies of power systems in quasi-sinusoidal Steady state (QSSS).

a.    System frequency is assumed to be constant (or very slowly-varying) in time.

b.    Permits the use of phasors.

c.    Algebraic models.

d.    Tools: Power flow, symmetrical components and steady-state fault analysis.

Basic PSA tools fall into 2 categories depending on the state of operation of the system

      2.   Transient. Studies of the time dynamics of power Systems.

a.    System states evolve in time.

b.    Differential equation models.

c.    Tools: Time-domain simulation, stability studies.

Lecture (2) Introduction to Power Plants

Contents:

•Introduction and overview

•Importance and selection

•Major power system components

•Circuit configurations for MV and HV installations

•Cables

•Overhead lines

•Switchgear

•Instrument transformers