Posts Tagged ‘partial discharge’

Common problems in medium voltage switchgear

May 5th, 2017 | Make a comment | Posted in Panel Building
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megaphone-redAs protection is the first concern in power systems design, companies spare no effort to upgrade protection devices to better, safer, smarter and more efficient devices.

This is obvious at a glance in the development of switchgear. Probably you know what switchgear is, but you don’t know the reason why switchgear got this name. Nor what are the most encountered problems in MV switchgear.

That’s what our fellow electrical engineer Yasser is going to explain today in this article he gently sent us! Leave your impressions below.

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Condition monitoring of the transformer (back to basics)

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

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Transformer Routine Test – Measuring The Partial Discharge

March 4th, 2015 | Make a comment | Posted in Energy Efficiency - lighting
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Hi, it’s Steven Mill and today I want to tell you about Measuring The Partial Discharge. Ready?

Transformer routine test is normally conducted to see if there are any partial discharges in the transformer insulation.

What is a partial discharge?

Partial Discharge1

A partial discharge can be described as electrical arcs produced between any of the electrodes in the insulating material of the transformer, which can in turn produce surges between the conductors.

Partial discharges normally occur as a result of little air bubbles left over in the insulating material of the transformer during the manufacturing stage, or at the surface of the insulating media.

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