MV/LV substation: selection of power transformers

March 20th, 2018 | Make a comment | Posted in Power quality

The transformer is the most vital component of a grid-station. Poor evaluation and improper choice of power transformers can wreak havoc on the operational parameters and eventually result in catastrophic events.

power transformer substation installation

power transformer substation installation

The selection of suitable transformer is always an integral part of substation design and separate consultants are often hired for the purpose.

This is the topic that K. sent our team several days ago. He chose to tell you in detail the operational requirements and parameters followed for sanctioning a suitable transformer for a substation.

Read the rest of this entry »

Electrical System Protection mechanisms

March 15th, 2018 | Make a comment | Posted in Electrical Safety

megaphone-yellowMany standards like IEC are assigned for 2 main reasons: Safety of personnel and safety of appliances. Therefore, many protection mechanisms have been developed through years to protect the electrical system from abnormal conditions and provide the needed degree of safety.

Let your fellow electrical engineer Yasser discuss about those mechanisms below. Send us articles just like him via email
Read the rest of this entry »

Choosing electrical insulator for MV and LV distribution overhead-lines

March 12th, 2018 | Make a comment | Posted in Electrical Safety

This article about the electrical insulator has been written by one of the members of the EEC (Electrical Engineering Community), whose nickname is K.

If you want to send debates, articles, reviews or stories about your career or studies, do not hesitate to contact us via email.

Purpose of an electrical insulator

different LV insulators

different LV insulators

Read the rest of this entry »

Cable sizing: methodology in underground duct banks

March 8th, 2018 | 2 Comments | Posted in Power quality

megaphone1The main goal of an electrical power system is to deliver energy to consumers, fulfilling the minimum requirements regarding to quality, reliability and security. This goal is achieved when the elements that comprise the power system (transformers, transmission lines, cables, circuit breakers, etc) are sized to operate efficiently.

Let’s hear what more Carlos, one of the member of the EEC, has to say about cable sizing… Share and comment below!

Read the rest of this entry »

MV busbar schemes (Review)

March 5th, 2018 | 1 Comment | Posted in Electrical distribution

megaphone-blueChoosing a good bus scheme is vital for operational reliability, safety and redundancy of power supply system.

Your fellow electrical engineer K. tries to discuss busbar layout and busbar schemes as per the design of a typical substation.


Busbar(s) consist of incoming and outgoing circuits with a common point. Every circuit connected to a busbar scheme has its separate incomer, circuit breaker, isolator, potential transformer, current ratio transformer and associated switchgear. These components are arranged in a special sequence so as to trip a specific circuit in case of an abnormality.
Read the rest of this entry »

Electrical engineering Community is proudly powered by WordPress
Entries (RSS) and Comments (RSS) and license Creative Commons License