Archive for the ‘Power quality’ Category

Decentralized power generation: the future of efficient power transmission and distribution

March 11th, 2019 | Make a comment | Posted in Power quality
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Traditionally, there are three major steps in the provision of consumers with electricity. They are generation, transmission, and distribution.

Today let’s talk about Decentralized generation as a system thanks to this article from Uko, graduate of mechanical engineering in Nigeria.

 

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Method for defining the location of SVC FACTS devices

February 5th, 2019 | Make a comment | Posted in Power quality
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The power flow control, improved stability, management of the voltage profile and minimized losses, are the goal of every power company, and can be achieved by applying FACTS in the electric power system.

In this article, one of the blog contributors, Mile, will look into a simple approach, which is based on sensitivity coefficients and dynamic P-V curves, in order to define the optimal location of SVC FACTS device. The used method actually consists of identifying the weakest buses in the system through the P–V curves. Enjoy!

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A new type of Three-Phase buck-boost power quality converter

January 17th, 2019 | Make a comment | Posted in Power quality
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We’re happy to publish this new article by Mile, your fellow electrical engineer who has kindly been sending us articles for several months now.

If you want to, you can do like him and send us an email. We’ll be happy to publish your essay!

Introduction

The conversion of electrical power from ac to dc, whilst maintaining sinusoidal input currents at unity power factor, is widely achieved using a variety of power converters.

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Quality Tests Performed on Insulated Oils

January 8th, 2019 | Make a comment | Posted in Power quality
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Hi there! We have discussed in a previous article the theory behind the electrical breakdown in liquids applied to insulated oils inside power transformers.

We found that contaminants inside the oil are the main cause for electrical breakdown inside oils, therefore since mineral oils degrade over time, it is expected to eventually see contaminants inside the oil.

In order to ensure that the quality of the oil remains within acceptable values, it is necessary to develop quality tests to determine if it is necessary to schedule maintenance or not.

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The Theory behind Dielectric Breakdown in Liquids

December 25th, 2018 | Make a comment | Posted in Power quality
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Power transformers may have several types of insulation media. Some can be insulated with gases like air or SF6, others with solids like insulation paper, and some can be insulated with oil.

In this article, we will approach the theory behind the dielectric breakdown in liquids that allows us to understand the reason behind electrical discharges inside oil transformers. Let’s begin.
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