Electrical installation & energy efficiency

Partial discharges (PD) are intermittent low intensity electric arcs which are not visible and that take place inside electrical equipments.

Let Carlos (a consultant for a company developing solar PV system installations) tell you more about this topic.

Partial discharges produce damage that on the long term can end up in electrical failure, which is why it is convenient to establish preventive maintenance in order to consider replacement at proper time before the electrical failure takes place.
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How about an article by enegineer M.B about the implementation of 50 KV Variable DC Power Supply using CockCraft Voltage Multiplier? Enjoy your reading!

You can also send us yoru own articles by mail in order to participate in this community blog :) thank you!
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New article sent by one of our beloved visitors and member Yasser. This time, he chose to share an overview of Power Transmission Systems at MV and LV levels

If you too want to share writings with everybody, please send us a mail.

Introduction

Electrical power passes by many stages before it reaches our homes. The power generated at the utility can’t be directly to consumers due to many technical aspects such as:
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Choosing a good bus scheme is vital for operational reliability, safety and redundancy of power supply system.

Your fellow electrical engineer K. tries to discuss busbar layout and busbar schemes as per the design of a typical substation.

Introduction

Busbar(s) consist of incoming and outgoing circuits with a common point. Every circuit connected to a busbar scheme has its separate incomer, circuit breaker, isolator, potential transformer, current ratio transformer and associated switchgear. These components are arranged in a special sequence so as to trip a specific circuit in case of an abnormality.
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Ahmed H. wanted to tell us about Supervision functions- especially Fuse failure supervision. Enjoy!

What is fuse failure supervision?

Fuse-failure supervision is a function used to supervise the operation of the fuses responsible for protecting the secondary circuit of the potential transformer, which delivers the reduced voltage to the protection relay and voltmeters.

In relay codes and substation automation, the fuse-failure supervision function can be identified by the following symbols,
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