Electrical Protection Systems: Design & Installation

April 9th, 2018 | Make a comment | Posted in Electrical Safety

megaphone-blueYasser sent us an article about electrical protection systems and chose to focus on design and installation.
We thank him for bringing more knowledge for our electrical engineering community.

If you want to do the same, please send us your articles by mail.

What is a power protection system?

A system which is responsible for protecting electrical systems from faults by isolating the faulty part from the rest of the system, so power is not disconnected from healthy parts and this increases system reliability and efficiency.
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Distance Protection Schemes & Relay Settings applied to Multiterminal Lines

April 5th, 2018 | 2 Comments | Posted in Electrical Safety

Carlos V. is an electrical power systems protection expert. Let him tell you more about distance protection schemes and relay settings applied to multiterminal lines. A second part of this article will be published soon.


Multiterminal lines tipically have at least a weak source in one of their terminals as it is shown in figure 1. This condition could negatively affect the performance of the protection systemduring the ocurrence of a faultalong the lines.

It is posible that the weak source terminal might not be able to provide enough current to the fault for the operation of theprotection relay locatedat this terminal, due to the high impedance of the weak source.

Figure 1.  Multiterminal Lines System

Figure 1. Multiterminal Lines System

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Cleaning of electrical equipment and switchgear

April 2nd, 2018 | Make a comment | Posted in Electrical Safety

Keeping the electrical components of a switch gear clean and contamination free is quite important for its safe and reliable operation. Here’s a nice article by your fello welectrical engineer K. who wanted to tell you about the cleaning of a MV/LV electrical equipment and switchgear. Enjoy and comment!

A contaminated switchgear

A contaminated switchgear

Cleaning is considered an integral part of every routine maintenance schedule of a substation and separate teams are often assigned for the purpose. Choosing the right kind of cleaning methods is necessary as the wrong methods may damage the equipment or prove to be un-economical.
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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.

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Electrical System Protection mechanisms

March 15th, 2018 | 1 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
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