Protection systems for underground cables systems

June 16th, 2016 | 2 Comments | Posted in Electrical Safety
Tags: , ,

Underground cable coversThird part of A.N’s articles series about underground cables. Check the last 2 on the blog or just read this one focusing on protection systems and comment to give your impressions.

Remember you too can send us articles, debates, tutorials, career stories or anything about whatever related to the electrical engineering topic :)

To do so, just send a mail.
Read the rest of this entry »

Condition monitoring of the transformer (back to basics)

June 13th, 2016 | 1 Comment | Posted in Electrical distribution
Tags: , ,

Hi this is Steven Mill! I’m back with a back to basics article about condition monitoring of the transformer. Hope it will help y’all!

The transformer is the most crucial part in electrical distribution system as it is the most expensive equipment in an electrical distribution system. If a transformer fail unexpectedly, not only it will affect the electrical supply but also it will cost you time and money. Hence it is important to detect early sign of fault to avoid power outage and extra cost.

In this article, we will discuss several techniques used to monitor the condition of the transformer. Those techniques are:

  1. Acoustic Monitoring
  2. Infrared Monitoring
  3. Dissolved Gas Analysis
  4. High Performance Liquid Chromatography
  5. Partial Discharge
  6. Frequency Response Analysis
  7. Power Factor
  8. Winding Resistance
  9. Core Insulation Resistance

Read the rest of this entry »

Comparison of overhead and underground transmission cables

June 9th, 2016 | 1 Comment | Posted in Others
Tags: , ,

megaphone1Hello everybody, here’s the 2d part of A.N’s articles series about underground cables. Leave your impressions!

Electrical power is transmitted through either overhead power lines or underground cables. Each of the two types of cables has its benefits as well as pitfalls as well as places where it is commonly used.
Read the rest of this entry »

Synchronous motors: Motor start-up strategies

June 6th, 2016 | 1 Comment | Posted in Energy Efficiency - motors
Tags: , ,

Last day, D.Ros told us about brushless synchronous motor field exciters. Today, he focuses on motor start-up strategies. Enjoy and ask questions if you have any!

As time goes by and industries keep growing and growing exponentially, motors keep getting larger and sites keep moving further away from the power sources, however, most of the times, power systems can’t keep up with the voracious rhythm of industrial growth.

Figure 1 Motor start-up strategies: Failed control panel for an assisted starting method of a synchronous motor

Figure 1: Failed control panel for an assisted starting method of a synchronous motor

Read the rest of this entry »

Underground cables: types, advantages & disadvantages

June 2nd, 2016 | 1 Comment | Posted in Others
Tags: , ,

One of our fellow member of the EE Community is willing to do a several-parts series of articles about underground cables. Let’s begin with the basics: type, benefits and drawbacks…

Underground cables are used for power applications where it is impractical, difficult, or dangerous to use the overhead lines. They are widely used in densely populated urban areas, in factories, and even to supply power from the overhead posts to the consumer premises.

Figure 1: Basic construction of underground cables | image: 3.bp.blogspot.com

Figure 1: Basic construction of an underground cable|image: 3.bp.blogspot.com

Read the rest of this entry »

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