Energy and Power
What is the Eddy Current?
Cant see this video? Click here to watch it on Youtube. Eddy currents are currents induced in conductors to oppose the change in flux that generated them. It is caused when a conductor is exposed to a changing magnetic field… Read more
Oct 13, 2011 | By Edvard Csanyi
Energy and Power
Neutral system – Single earthed or Multi earthed?
In distribution system three phase load is unbalance and non linear so the neutral plays an very important role in distribution system. Generally, distribution networks are operated in an unbalanced configuration and also service to consumers. This causes current flowing… Read more
Oct 13, 2011 | By Jignesh Parmar
Energy and Power
Insulating materials in electrical equipment
The reason for using insulating materials is to separate electrically the conducting parts of equipment from each other and from earthed components. Earthed components may include the mechanical casing or structure that is necessary to enable the equipment to be… Read more
Oct 05, 2011 | By Edvard Csanyi
Energy and Power
Supercapacitor – The future of energy storage
Supercapacitors have been around since 1966 but were never considered as a serious alternative for batteries. Ironically, we could have the said the same for AM radio before Armstrong developed the superheterodyne receiver. It may not be long before a… Read more
Oct 05, 2011 | By Olan
Cables
How to locate underground faults on cable?
A common approach to test cable and determine insulation integrity is to use a Hi-pot test. In a hi-pot test, a DC voltage is applied for 5 to 15 min. IEEE-400 specifies that the hi-pot voltage for a 15-kV class… Read more
Oct 04, 2011 | By Edvard Csanyi
Energy and Power
Typical Constructions Of Overhead Lines
Along streets, alleys, through woods, and in backyards, many of the distribution lines that feed customers are overhead structures. Because overhead lines are exposed to trees and animals, to wind and lightning, and to cars and kites, they are a… Read more
Oct 03, 2011 | By Edvard Csanyi
Energy and Power
What is the Static Var Compensator (SVC)?
Static Var Compensator is “a shunt-connected static Var generator or absorber whose output is adjusted to exchange capacitive or inductive current so as to maintain or control specific parameters of the electrical power system (typically bus voltage)”. SVC is based… Read more
Sep 25, 2011 | By Edvard Csanyi
Cables
Ionization (Corona Discharge) Tests
The ionization test is used primarily for detecting ionization (corona discharge) and slot discharge in generator windings. Both ionization and slot discharge may cause deterioration of insulation. Ionization generally occurs in voids inside the insulation within the ground shield section… Read more
Sep 24, 2011 | By Edvard Csanyi
Energy and Power
Virus-Powered Battery
Engineers at MIT (Massachusetts Institute of Technology) have figured out a way to deal with virus that is better than just killing them: they’re putting them to work. The researchers have developed a new technique wherein a key component of… Read more
Sep 16, 2011 | By Bipul Raman
Energy and Power
Ready for wind power? It’s time.
Galloping climate change and dwindling supplies of fossil fuels are driving ever-greater interest in renewable energy. As a result, wind energy is booming worldwide. Not since the heyday of the American farm windmill has wind energy grown at such a… Read more
Sep 15, 2011 | By Edvard Csanyi
Energy and Power
Ohm’s Law – The Resistance
It is intuitive that voltage and current would be somehow related. For example, if the potential difference between two ends of a wire is increased, we would expect a greater current to flow, just like the flow rate of gas… Read more
Sep 02, 2011 | By Edvard Csanyi
Energy and Power
How reactive power is helpful to maintain a healthy system
We always tend to reduce reactive power to improve system efficiency. This is acceptable at some level. If the system is purely resistive or capacitance, it may cause problems in the Electrical system. AC systems supply or consume two kinds… Read more
Aug 29, 2011 | By Jignesh Parmar
Energy and Power
Difference between Power Transformer and Distribution Transformer
Power transformers are used in transmission network of higher voltages for step-up and step down application (400 kV, 200 kV, 110 kV, 66 kV, 33kV) and are generally rated above 200MVA. On the other hand, distribution transformers are used for… Read more
Aug 27, 2011 | By Jignesh Parmar
Energy and Power
Surge arrester types and auxiliary equipment
Nearly 100 years ago, electrode gaps (rod, sphere, or pipe) were used to limit overvoltages on equipment (Sakshaug, 1991). Some of these systems, particularly pipe gaps, may still be in service today. However, the characteristic of gap sparkover voltage vs…. Read more
Aug 25, 2011 | By Edvard Csanyi
Energy and Power
How to save electrical energy at home
In our home we use lot of electrical equipment like TV, Freeze, Washing machine, Mp3 player, music system, computer laptop. But we have not adequate knowledge for how to use this electrical equipment in proper way. Due to this ignorance… Read more
Aug 23, 2011 | By Jignesh Parmar
