Archive for the ‘Power quality’ Category

Why AC over DC? (Debate/Essay)

June 19th, 2018 | Make a comment | Posted in Power quality


War of Currents?!! Does it mean something to you? This is the name of a battle took place between Nikola Tesla and Thomas Edison. We all know those great inventors, but let’s talk briefly about each of them.

Then I, Yasser one of the member of the Electrical Engineering Community Blog, will tell you why I’d place AC over DC. Please comment so that I can know more about what you think about it.

How can you select the proper busbar?

June 4th, 2018 | 2 Comments | Posted in Power quality

Before getting into details regarding the selection of busbars many questions should be answered first. What’s busbar? What’s the difference between busbar and feeder? Where is busbar used? What are the advantages and disadvantage of using busbars?

Let your fellow electrical engineer Yasser tell you more about it :)

Copper busbars in a distribution panel

Figure.1 Copper busbars in a distribution panel | image:


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.


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!


Sub-Transmission Line Pre-comissioning tests

January 11th, 2018 | 1 Comment | Posted in Power quality

megaphone-blueYour fellow electrical engineer K. is back with an article about pre-comissioning tests for sub-transmission (MV) overhead line.

Enjoy and feel free to leave comments.

Testing and Commissioning plan

Before commissioning of any electrical setup, certain diagnostic tests are required. Testing And Commissioning plan (T&C) specifies all the criteria for energizing of any sub-transmission overhead line (MV system).

T&C plan should address following parameters:

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