Dwayne Peart

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Comparison of Protection Relay Types

Comparison Table<p>This comparison summarize characteristics of all protection relay types described in previously published technical</b> …

Maintenance and inspection of the transformer bushings

Six different inspections<p><i>There are six different inspections to be performed on the bushings of the power transformer:</i><p>1. Routine inspection<p>Excessive …

Oil Spills

How Dangerous Are Induced Currents In Transmission Towers And Poles?

Electric Field<p>Landowners and developers should be aware of the <b>potential for nuisance and startle shocks</b> (caused by induced voltage) that can occur …

What engineers should know about using conduits in power substation designs

Design challenges<p>There are several locations where conduit is used in power substation designs. The most common one considered is conduit used to …

Let's start learning the PLC programming

Introduction to PLCs<p>For managing and control of the electrical systems there once were used electromechanical relays. In time as tehnology advanced …

Arduino

How reactive power is helpful to maintain a system healthy

Reactive power<p>We always in practice to reduce <b>reactive power</b> to improve system efficiency. This are acceptable at some level, if system is purely …

Arduino

Providing capacitive reactive compensation with shunt capacitor banks

Few words about shunt capacitor banks<p>Shunt capacitor banks are mainly installed <b>to provide capacitive reactive compensation</b> – <b>power factor correction</b>. …

Testing and Commissioning of Substation DC System

Objective<p>Power substation DC system consists of <b>battery charger</b> and <b>battery</b>. This is to verify the condition of battery and battery charger and …

An Overview Of Smart Power Grid

Abstract<p>The present electric grids use the technology of <i>1970’s</i>. But with the advancement in various concepts of power generation, problems associated …

Smart Grids

How to Install Solar Panels on Your Roof.. The Basics

Solar energy is a wonderful thing – it’s free clean energy. Part of transforming solar from a wonderful thought to an amazing reality requires …

Solar Power

Maintenance Management Of Electrical Equipment (Condition Monitoring Based) - 1

The cost of maintenance<p>In today’s competitive market scenario, all types of industries are under tremendous pressure <b>to cut down their maintenance</b> …

Engineering

Smart and safe protective shutdown of LV system with selectivity | EEP

Safety point<p>From the point of view of the operational safety and reliability of an entire low-voltage installation, it is usually desirable to …

Arduino

Seven reasons to be grateful the World Cup is over

If you struggled to care even about last night's final, here are a few reasons to be grateful the World Cup is over at last<p>Last night, as a billion people watched Germany defeat Argentina to win the World Cup, I turned to Orange is the New Black on Netflix to escape the monotonous television …

Arriving at the scene of a power substation fire. What to do?

To contact utility personel<p>Power substations contain transformers, large quantities of oil, energized electrical equipment and, in some cases, …

How to perform a power transformer turns ratio test | EEP

Turns ratio between the windings<p>Power transformer turns ratio test is an <b>AC low voltage test</b> which determines the ratio of the high voltage winding to …

Arduino

PayPal 'Kicking the Tires' on Integrating Touch ID Into its Mobile Apps

PayPal is already working to incorporate the fingerprint scanning capabilities of the iPhone 5s into its mobile apps, likely planning to use the technology to authenticate users and confirm payments through the use of a fingerprint rather than a password.<p>Apple first announced a Touch ID API for …

Importance of Transformer Inrush Current

Residual Flux<p>When a transformer is taken off-line, there will be a certain amount of <i>residual flux</i> that can remain in the core due to the properties …

Engineering

An Introduction To SCADA For Electrical Engineers - Beginners

Control and Supervision<p>It is impossible to keep control and supervision on all industrial activities manually. Some automated tool is required which …

Transformer Routine Dielectric (Insulation) Test

Insulation tests to be performed<p>The following <i>insulation tests</i> are performed in order to meet the transformer insulation strength expectations. Unless …

The most common accessories you can find on oil filled transformer

Transformer accessories<p>Every <b>oil filled transformer</b> has a variety of accessories for different purposes. Here, I’ll try to name the most common of …

Protecting Oil Type Transformer with Buchholz Relay

Introduction to Buchholz Relay<p>Buchholz relay is a gas-actuated relay installed in oil immersed transformers for protection against all kinds of …

An example of calculating transformer size and voltage drop due to starting of large motor

Calculate voltage drop<p>Let’s calculate voltage drop in transformer <b>1000KVA</b>, <b>11/0.480 kV</b>, impedance <b>5.75%</b> due to starting of <b>300 kW</b>, <b>460V</b>, <b>0.8 power factor</b>,</b> …

Why Community Acceptance Is Important for Planning, Design and Construction of Substation?

Importance Of Community Acceptance<p>Community acceptance generally encompasses the <i>planning</i>, <i>design</i>, and <i>construction phases</i> of a substation as well as …

What Is The Basic Insulation Level (BIL) | EEP

Introduction to BIL<p>Insulation levels are designed to withstand surge voltages, rather than only normal operating voltages. Since the insulation lines …

NEMA Definition Of Motor Full Load Nominal Efficency (Standard MG1-12.54.2)

NEMA standard MG1-12.54.2<p>Efficiency is defined as the ratio of the power output divided by the power input. Machine losses are in the form of heat, …

Arduino

Electrical Design Project of a Three Bed Room House (Part 1)

Requirements and Standards<p>Electrical design is not an easy task. It requires a lot of expertise. Detailed study is needed prior to installation work. …

Determining The Soil Resistivity To Design a Good Substation Grounding System

Design a safe substation grounding system<p>It is essential to determine the soil resistivity and maximum grid currents to design a substation grounding …

Design of Overhead Transmission Line Foundation

Tower foundation<p>The <b>foundation</b> is the name given to the system which transfers to the ground the various steady state (dead) and variable (live) loads …

Engineering

Typical constructions of overhead lines

Along streets, alleys, through woods, and in backyards, many of the <b>distribution lines</b> that feed customers are overhead structures.<p>Because overhead …

Engineering

Transformer Differential Protection Principles

Inter-winding faults //<p>Similar to bus protections, transformers are protected by differential relays.<p><i>Inter-winding faults</i> (<i>short circuits</i>) and ground …