Let's identify all the key parts of a substation by inspection: transformers, voltage regulators, lightning arresters, reconnectors, fuses, etc. We'll look at a few examples.

Full edX course with interspersed practice problems to help you learn:
https://www.edx.org/learn/electricity...

Aaron Danner is a professor in the Department of Electrical and Computer Engineering at the National University of Singapore.
https://www.ece.nus.edu.sg/stfpage/el...

Video filmed and edited by Cheryl Lim.
@randomcheryl