High Voltage
High-voltage transmission lines and Electromagnetic Interference (EMI)
The corona discharge produces radio noise and in lesser extent television ( TV ) disturbances around high-voltage transmission lines. This can be easily observed by all of us when we… Read more
Nov 12, 2011 | By Edvard Csanyi
High Voltage
Be extremely careful when racking in and racking out circuit breaker
There are many reasons causes arc flash incidents. Some of arc flash explosions occur when substation personnel insert or remove (rack in or out) circuit breakers from low or high… Read more
Oct 11, 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… 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… Read more
Sep 25, 2011 | By Edvard Csanyi
Cables
Understanding Underground Electric Transmission Cables
Underground cables have different technical requirements than overhead lines and have different environmental impacts. Due to their different physical, environmental, and construction needs, underground transmission generally costs more and may… Read more
Sep 21, 2011 | By Bipul Raman
High Voltage
GIS vs AIS – Substation Earthing
Compressed SF6 gas used in MV and HV switchgears as an insulating medium has led to the development of compact gas-insulated substation (CIS) technology (figure 1). GIS , having many… Read more
Sep 12, 2011 | By Edvard Csanyi
High Voltage
What Is a Load Break Switch?
A load break switch is a disconnect switch that has been designed to provide making or breaking of specified currents. This is accomplished by addition of equipment that increases the… Read more
Sep 08, 2011 | By Edvard Csanyi
High Voltage
Oil-Filled Equipment in Substation – IEEE 980-1994 (R2001)
A number of electrical apparatus installed in substations are filled with oil that provides the necessary insulation characteristics and assures their required performance. Electrical faults in this power equipment can… Read more
Sep 07, 2011 | By Edvard Csanyi
High Voltage
AIS – Air insulated substations
In large, modern AC power systems, the transmission and distribution systems function to deliver bulk power from generating sources to users at the load centers. Transmission systems generally include generation… Read more
Sep 06, 2011 | By Edvard Csanyi
High Voltage
Capacitor protection by surge arresters – ABB
Generally speaking, capacitor protection by surge arresters has been a difficult task before ZnO arresters became available. The high discharge currents and possible energies associated with an arrester operation at… Read more
Aug 22, 2011 | By Edvard Csanyi
High Voltage
Budgeting and Financing Substation
The construction of new substations and the expansion of existing facilities are commonplace projects in electric utilities. However, due to the complexity, very few utility employees are familiar with the… Read more
Aug 16, 2011 | By Edvard Csanyi
High Voltage
GIS vs AIS – Life cycle assessment
In order to ensure the future supply of electricity we require sustainable concepts that preserve resources and do not harm our environment. Humankind needs a reliable and secure power supply… Read more
Jul 14, 2011 | By Edvard Csanyi
High Voltage
Power Fuses in High Voltage
Power fuses are a generally accepted means of protecting power transformers in distribution substations. The primary purpose of a power fuse is to provide interruption of permanent faults. Fusing is… Read more
Jul 11, 2011 | By Edvard Csanyi
High Voltage
HIS – Highly Integrated Switchgear, Type 8DQ1
No more losing sleep over space restrictions: HIS, the gas-insulated switchgear for indoor and outdoor use requires less than half the space of comparable air-insulated switchgear. The 8DQ1-type HIS is… Read more
Jun 17, 2011 | By Edvard Csanyi
High Voltage
Construction and service life of GIS
GIS is assembled of standard equipment modules (circuit breaker, current transformers, voltage transformers, disconnect and ground switches, interconnecting bus, surge arresters, and connections to the rest of the electric power… Read more
Jun 04, 2011 | By Edvard Csanyi
