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 system) to match the electrical one-line diagram of the substation…. Read more
Jun 04, 2011 | By Edvard Csanyi
Hydropower
How to determine the hydropower available at site
To determine the power available at a site, head and flow measurements must be taken. Flow is the rate at which water moves, measured in liters per minute (I/m) or gallons per minute (gpm). This can be measured by channeling… Read more
Jun 03, 2011 | By Edvard Csanyi
Energy and Power
How contactor controls an electric motor?
When a relay is used to switch a large amount of electrical power through its contacts, it is designated by a special name: contactor. Contactors typically have multiple contacts, and those contacts are usually (but not always) normally-open, so that… Read more
Jun 01, 2011 | By Edvard Csanyi
Wind Power
Integrating wind energy into the electricity network
One of the most frequent misunderstandings occurring in the public discussion about integrating wind energy into the electricity network is that it is treated in isolation. An electricity system is in practice much like a massive bath tub, with hundreds… Read more
May 30, 2011 | By Edvard Csanyi
High Voltage
GIS control system
For ease of operation and convenience in wiring the GIS back to the substation control room, a local control cabinet (LCC) is provided for each circuit breaker position (Figure 1). The control and power wires for all the operating mechanisms,… Read more
May 29, 2011 | By Edvard Csanyi
Transformers
GEAFOL – cast-resin transformer
The Siemens’s transformer GEAFOL principle has succeeded in producing transformers with excellent electrical, mechanical and thermal characteristics, which have also proved to be particularly compatible with the environment. GEAFOL transformers are insulated with an epoxy resin/quartz powder mixture. This is… Read more
May 27, 2011 | By Edvard Csanyi
Energy and Power
Technology future – The cost of inaction
Without new thinking on technology intervention, the future looks bleak. Unless the role of technology in the global economy is reconsidered, we risk becoming powerless to feed a growing population, combat climate change, meet energy demands and adapt to dwindling… Read more
May 25, 2011 | By Edvard Csanyi
Electronics
ESD – Electro Static Discharge
An increasing problem today with the use of more and more electronic equipment in our systems is the Electro Static Discharge (ESD). The main source of the problem is the wrong handling of electronic components, printed circuit boards, etc. A… Read more
May 23, 2011 | By Edvard Csanyi
Transformers
TRIHAL – Dry type cast resin HV/LV transformer
Trihal is a three-phase dry type transformer cast under vacuum in epoxy resin with an active filler. It is this active filler, essentially composed of trihydrated alumina, which is the origin of the Trihal trademark. The magnetic core is made… Read more
May 22, 2011 | By Edvard Csanyi
Hydropower
Economic analysis of an mini hydro power plant (MHPP)
Micro hydro projects must be proven to attract the interest of investors. It is also of key importance in enabling financial institutions to supply the funds necessary to finance the project in addition to the promoter’s own funds. As with… Read more
May 20, 2011 | By Edvard Csanyi
Renewable Energy
Is Wind Power the Answer to Small-Scale Renewable Energy?
Wind Power. A subject that is close to my heart (literally, as I live in a very windy valley!). Wind power has the potential to be used in a home environment only in the right circumstances, and has the potential… Read more
May 18, 2011 | By carlor10
SCADA
Wind Turbine Control and Operation with Ovation SCADA
Wind is an infinitely renewable supply of power that can be harnessed as an outstanding energy source given the proper location and use of the latest turbine generation technology. Major power producers world-wide have adopted wind power, a clean source… Read more
May 16, 2011 | By Edvard Csanyi
Energy and Power
Testing of UPS devices
The purpose of electrical testing on systems and their components is two-fold. The first is to check the installation of the equipment and perform component and systems tests to ensure that, when energized, the system will function properly. The second… Read more
May 15, 2011 | By Edvard Csanyi
Energy and Power
Moisture Effect On Insulation Of Generator
Moisture, which can enter the insulation of a generator or motor winding from damp air or which can enter the winding of a transformer from wet oil, will make a surprisingly large difference in the insulation resistance. This is clearly… Read more
May 13, 2011 | By Edvard Csanyi
Energy and Power
Magnifying transmitter – Nikola Tesla
Nikola Tesla is known for many great inventions. Almost all modern power distribution and production systems use Tesla’s designs from over 100 years ago. In addition to that, we have Tesla to thank for radio transmission, remote controls, florescent lighting,… Read more
May 11, 2011 | By Edvard Csanyi
