Power Substation

Energy and Power

Energy and Power

Energy and Power

## Dimensioning of Power Distribution Systems (1)

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Learn about power engineering and HV/MV/LV substations. Study specialized technical articles, electrical guides, and papers.

# Inspection Of Voltage Drop In Conductors

It is part of the inspection process to ensure that installed conductors have been correctly selected for current carrying capacity and voltage drop. To check the suitability of the current… Read more

Apr 15, 2012 | Edvard

# What is incident energy caused by arc flash?

Incident energy is the energy per unit area received on a surface located a working distance away from the arc flash location. The working distance is the distance from where… Read more

Apr 13, 2012 | Edvard

# Star-delta motor starter explained in details

Most induction motors are started directly on line, but when very large motors are started that way, they cause a disturbance of voltage on the supply lines due to large… Read more

Apr 10, 2012 | jiguparmar

# Short review of resistance, reactance and impedance

Resistance is essentially friction against the motion of electrons. It is present in all conductors to some extent (except superconductors!), most notably in resistors. When alternating current goes through a… Read more

Apr 08, 2012 | Edvard

# Capacitor Banks In Power System (part four)

Continued from technical article: Capacitor Banks In Power System (part three) Let us consider that there is a captive diesel generator the rating of which is specified as 1000kVA and… Read more

Mar 27, 2012 | Asif Eqbal

# Capacitor Banks In Power System (part three)

Continued from part two – Capacitor Banks In Power System (part two) Capacitor units shall be suitable for continuous operation at an RMS current of 1.30 times the current that… Read more

Mar 03, 2012 | Asif Eqbal

# Capacitor Banks In Power System (part two)

Continued from part one – Capacitor Banks In Power System (part one) It should be noted that in an inductance the current lags the voltage by 90 degrees and in… Read more

Mar 01, 2012 | Asif Eqbal

# Capacitor banks in power system (part 1)

When a charge is delivered to a conductor its potential is raised in proportion to the quantity of charge given to it. At a particular potential a conductor can hold… Read more

Feb 27, 2012 | Asif Eqbal

# How to explain your kids, what is the electricity?

It’s really not an easy task to explain kids what is the electricity and what is really happening in the wires while lamp is powered, or what are the magnets,… Read more

Feb 26, 2012 | Edvard

# Types of neutral earthing in power distribution (part 2)

Resistance grounding has been used in three-phase industrial applications for many years and it resolves many of the problems associated with solidly grounded and ungrounded systems. Resistance Grounding Systems limits… Read more

Feb 09, 2012 | jiguparmar

# Types of neutral earthing in power distribution (part 1)

In the early power systems were mainly Neutral ungrounded due to the fact that the first ground fault did not require the tripping of the system. An unscheduled shutdown on… Read more

Feb 06, 2012 | jiguparmar

# About Permeability And Permitivity

The strength of electric field or electrostatic force strength or intensity of field (all synonymous terms) is measured & expressed in terms of force experienced by unit positive charge placed… Read more

Feb 01, 2012 | Asif Eqbal

# Synchronous Motor Construction

Synchronous motors convert electrical power to mechanical power and synchronous generators convert mechanical power to electrical power; and synchronous condensers supply only reactive power to stabilize system voltages. Synchronous motors, generators, and… Read more

Jan 14, 2012 | Edvard

# What Is The Potential Difference?

Potential difference is the term used to describe how large the electrostatic force is between two charged objects. If a charged body is placed between two objects with a potential difference, the charged body will try to… Read more

Jan 13, 2012 | Edvard

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