Archive for the ‘Power quality’ Category

Electrical Installations: Old VS New

October 24th, 2016 | Make a comment | Posted in Power quality
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Last time, your fellow electrical engineer Pablo told you about his bad experiences concerning grounding. Now he wants to deal with the electrical installations topic and he got 3 questions for you at the end of the article!

There are many differences that I can mention I found among old residential electrical installations (50 years ago) and today’s installation. The energy needs have changed. The main point is the demand, although it is true that today families have greater economic capacity to acquire more electrical equipment is so quite true that the equipment efficiency has improved considerably.

In the following figures can be seen as the average energy consumption has decreased slightly in recent years:

average-household-lighting-electricity-use average-household-gas-electricity-use
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Reactive power compensation in long middle voltage power lines

July 22nd, 2016 | 2 Comments | Posted in Power quality
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megaphone-darkblueMile is a young member of the community and he often sends articles about several topics. But his particularity is that he shares the experiment he had in school as a young electrical engineer student in Romania.

You too can share your experiment and be published in the blog, just send a mail to the team!

Introduction

The general purpose of this article is to compare several ways of compensation of reactive power in middle voltage power lines in order to determine the optimal technical and economical solution. In this article I am going to examine middle voltage power line which is fed from 110/20 kV/kV transformer station. Load flow analyses will be made for different cases and loads for the transformer station. According the results from the analyses the optimal technical solution will be determined.
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Power factor correction of networks (work experience)

July 4th, 2016 | Make a comment | Posted in Power quality
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electrical-engineer-testimonyIn last month newsletter (newsletter#79), we introduced you to Mile, one of the members of the community.

From then on, he kindly decided to help providing the blog with material, and his 1st attempt is about power factor correction of networks.

Tell this young man from Macedonia what you think about it below!
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DC: danger alert?

May 25th, 2016 | 16 Comments | Posted in Power quality
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The war between pro-AC fans and pro-DC fans has been around forever; ever since the end of the 19th century in fact.
Today, more than ever, the battle is raging! New technologies such as LED, cellphones, photovoltaic, and electric cars, are becoming more prevalent in our everyday lives, so it’s no surprise we’re witnessing a new major turning point in this AC versus DC battle: the pro-DC (electronic device manufacturer) fans are stepping up to the fight against the pro-AC (electric device manufacturers) who are carrying the flag for AC – which differentiates high and low current.
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Integrating IT in Electrical Systems and Tools

April 19th, 2016 | Make a comment | Posted in Power quality
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Our fellow member Marvin M. wants to tell us about IT (Information Technology) applied to electrical engineering today. An interesting topic you can read below.

And if you want to discuss a topic and to publish it on the blog, just send us a mail.

Electrical System

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