Power System Protection for Students (Generator, Line and Transformer Schemes Explained)

28.45 $

Learn about power system protection philosophy and techniques, and how to analyze relaying schemes of power systems, including instrument transformers, transmission lines, power transformers, and generators. 6h 16m total course length.



This course presents an introduction and overview of power system protection philosophy and techniques. Step-by-step lectures take the student to learn everything necessary to understand this field of electrical engineering. This course covers relaying schemes of power systems, instrument transformers, and then goes deep in analyzing protection schemes of transmission lines, power transformers, and generators.

In this course, we will discuss certain attributes of protection relays that are inherent to the process of relaying. In general, protection relays operate after some detectable damage has already occurred.

After completing this course, students will be able to:

  1. Understand detailed principles of power system protection,
  2. Read and analyze practical relaying schemes,
  3. Completely understand applications of digital power system protection

Course Preview:

Their purpose is to limit, to the extent possible, further damage to equipment, to minimize danger to people, to reduce stress on other equipment and, above all, to remove the faulted equipment from the power system as quickly as possible so that the integrity and stability of the remaining system are maintained.

Transmission lines are primarily exposed to short circuits between phases or from phase to ground. This is also the main source of damage to all other electrical equipment. The range of the possible fault current, the effect of load, the question of directionality and the impact of system configuration are all part of the transmission line protection problem.

The solution to this problem, therefore, is a microcosm of all other relaying problems and solutions. Since transmission lines are also links to adjacent lines or connected equipment, the protection provided for the transmission line must be compatible with the protection of all these other elements.

This requires coordination of settings, operating times and characteristics.

Additional information


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