Archive for the ‘Power quality’ Category

Hydro Generator: loss of power & efficiency

June 12th, 2019 | Make a comment | Posted in Power quality
Tags: , ,

Hello everybody, my name is Mile and I want to share my experience in a power plant based in Macedonia.

The tests for determining the losses of power in synchronous generators are of great significance, because of the fact that those parameters are necessary for the efficiency of the generator.

The power losses in the generator consist of the following components:

(more…)

Procedures to make transformers tests

April 12th, 2019 | Make a comment | Posted in Power quality
Tags: , ,

Transformers are static machines that allow the elevation, reduction or equalization of current and voltage without varying the frequency of a system, this is why their operation in the electricity network is essential (generation, transport, and distribution).

There are different types of transformers, which can be classified according to their level of stress, operation, location, construction, and configuration.

(more…)

Earth fault protection of the rotor in turbo generator in REK Bitola

April 5th, 2019 | Make a comment | Posted in Power quality
Tags: , ,

Picture 1. Earth fault protection of rotor

Earth fault is a common problem that appears when a generator is working and is connected on the system. The insulation of the generator’s rotor coil is working in bad working conditions and is constantly exposed on mechanical and thermal forces, due to the heat dilatation of the rotor coil.

Earth fault can be caused from damaged insulation, filth on the rings and the joint cables. After the first earth fault, it is most likely second fault to occur.

(more…)

Power generation: which element is the ultimate one? (Wind, Water or Sun)

March 21st, 2019 | Make a comment | Posted in Power quality
Tags: , ,

 

New very interesting article by a young graduate of mechanical engineering, Uko. Renewable energy sources are more and more used. But among Wind, Water, or the Sun, which one would you crown the ultimate in electricity generation?

 

 

Read the article and comment when you’re done. And if you want to publish articles in this blog and participate in the community, don’t hesitate and send us a mail.

(more…)

Electrical substations: how drawings are the KEY?

March 18th, 2019 | Make a comment | Posted in Power quality
Tags: , ,

If you are an outsourcing resource, working for an existing electrical substation, you are probably aware of how valuable are the plans or drawings.

Keep reading this article if you want to know how drawings are valuable tools that save time and lives!

It doesn’t matter if your work is to do maintenance, plan expansions, remove, compensate or to implement a new sequence of maneuvers for a specific circuit; the conclusion is the same: Drawings are necessary, and more important yet, they need to be as clear as possible, so no confusion should raise from reading them.

(more…)

Electrical engineering Community, license Creative Commons License