Autotransformers are among the most misunderstood yet critically important assets in modern power systems. While they appear deceptively simple at low voltages, at EHV levels (380–500 kV) they become system-defining components that directly influence fault levels, insulation coordination, grounding, and grid stability. This article provides a complete, utility-grade explanation of autotransformers, covering theory, mathematics, IEC…
Category: Electrical Courses
Feeder Protection Signaling
High-voltage power systems like 380kV transmission lines are the backbone of modern grids. They carry electricity over long distances, and any fault (like a short circuit or flashover) the system must detect it instantly and isolate it to protect equipment and keep the grid stable. That’s where feeder protection signaling comes in. In this post,…
Most Common Electrical engineering interview questions
in this post we are going to explain most Common Electrical engineering interview questions. The question here will focus on Overhead Power Transmission Lines. Following are some of the important and most Common Electrical engineering interview questions Why use high-voltage instead of low Voltage for transmission? The best answer to that question is that high-voltage…
Top software programs for Electrical Engineers
This unique post about Top software programs for Electrical Engineers is for those engineers who are seeking jobs in Saudi Arabia. Mastering key software tools can significantly boost their employability, especially in industries like power generation, transmission, oil & gas, and construction. Below is a list of the top software programs to focus on: 1. PLS-CADD…
Main Components of Substation-Power Transformers
In this series of Posts we are going to Explore Main Components of Substation. We will focus on a 380 kV substations or Bulk Supply Points (BSP) that are most common in Saudi Arabia. A substation is designed to manage the transmission and distribution of electrical power at high voltages. These include several key components…
Electrical Engineering Courses on Coursera
This Post is for Electrical Engineers who want to excel or become an Electrical Design Engineer, Site Engineer, Construction and Planning Engineer, Protection Engineer or Testing and Commissioning Engineer in Transmission, Distribution or Substation fields. Below is the list of Top and Best free Electrical Engineering Courses on Coursera. If you want to know how…