Energy and Power
Different types of battery used for auxiliary power supply in substations and power plants
In industrial or substation applications mainly three types of batteries are used namely: Vented / Flooded Lead Acid batteries Sealed maintenance free batteries/Valve Regulated Lead Acid Nickel Cadmium (Ni-cd) batteries For UPS applications batteries are the most popular and hence… Read more
Mar 12, 2012 | By Asif Eqbal
Energy and Power
The real truth behind household power savers
A household power low voltage saving devices has recently received a lot of attention from both consumers and manufacturers. It is generally used in residential homes to save energy and to reduce electricity bills. It is a small device which… Read more
Mar 07, 2012 | By Jignesh Parmar
Energy and Power
Coal handling plant in a thermal power generating station
In a coal based thermal power plant, the initial process in the power generation is “Coal Handling”. So in this article i will discuss the overall processes carried out at a Coal Handling plant in a coal based thermal power… Read more
Mar 04, 2012 | By Bipul Raman
Electrical Lectures
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 occurs at rated sinusoidal voltage and rated frequency, excluding transients…. Read more
Mar 03, 2012 | By Asif Eqbal
Electrical Lectures
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 a capacitor the current leads the voltage by 90 degrees…. Read more
Mar 01, 2012 | By Asif Eqbal
Electrical Lectures
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 a given amount of charge. Capacitance is the term to… Read more
Feb 27, 2012 | By Asif Eqbal
Electrical Lectures
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, magnetism and how all this stuff works. Most important of… Read more
Feb 26, 2012 | By Edvard Csanyi
Energy and Power
Zero Emission Power Plant, Without Carbon Dioxide
India is the world’s fourth largest economy and has a fast growing energy market. India’s current power capacity is 30% short of demand. Coal and petroleum are the primary sources of energy. High ash content in Indian coal and inefficient… Read more
Feb 22, 2012 | By vinod ramireddy
Energy and Power
220V DC system at thermal power station
The 220V DC system supplies direct current as source of operating power for control, signaling, relays, tripping and closing of switchgears, emergency motors of most important auxiliary systems. Under normal conditions of station generation, the storage battery units are kept… Read more
Feb 15, 2012 | By Bipul Raman
Electrical Lectures
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 the phase-to-ground fault currents. Continued from Types of neutral earthing… Read more
Feb 09, 2012 | By Jignesh Parmar
Cables
Discussing About LV And HV Electrical Cables
Space is really a critical criterion when discussing electrical cables and wires. In a low-voltage (LV) plastic-sheathed cable with conductor cross-sections of up to 10 mm2 per conductor or in high-voltage (HV) cables (Figure 2), the lion’s share of the… Read more
Feb 08, 2012 | By Edvard Csanyi
Electrical Lectures
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 the first ground fault was particularly undesirable for continuous process… Read more
Feb 06, 2012 | By Jignesh Parmar
Electrical Lectures
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 in sphere of influence of another source charge, which has… Read more
Feb 01, 2012 | By Asif Eqbal
Energy and Power
Using VLT AQUA Drive in submersible pump application
The system consists of a submersible pump controlled by a Danfoss VLT AQUA Drive and a pressure transmitter. The transmitter gives a 4-20 mA feedback signal to the VLT AQUA Drive, which keeps a constant pressure by controlling the speed… Read more
Jan 30, 2012 | By MarkoCvrkota
Energy and Power
Glossary of Medium Voltage Switchgear Terms
This glossary was published originally by Schneider Electric and it is intended to cover the meaning of many common words and phrases used in association with medium voltage switchgear. Many terms will also be applicable to low voltage switchgear as… Read more
Jan 25, 2012 | By Edvard Csanyi
