Generator tripping as stability control
Generator tripping is an effective (cost-effective) control especially if hydro units are used. Tripping of fossil units, especially gas- or oil-fired units, may be attractive if tripping to house load… Read more
Jul 06, 2011 | By Edvard Csanyi
SCADA communication vulnerabilities
Cyber security engineering is expensive. However, the presence of vulnerabilities requires it. In this section we list vulnerabilities we typically see in SCADA systems. The order in the list of… Read more
Jul 04, 2011 | By Edvard Csanyi
Designing Raw DC Power Supplies
Every type of electrical or electronic apparatus needs a source of electrical energy to function. The source of electrical energy is called the power supply. The two main classifications of… Read more
Jul 03, 2011 | By Sa'ad Eddin
Setting circuit breaker tripping with MS Excel spreadsheet
The protective unit of circuit breaker MUST fulfill: Instantaneous trip setting Im < Iscmin for a circuit-breaker Fusion current Ia < Iscmin for a fuse The protective unit (or device)… Read more
Jul 02, 2011 | By Edvard Csanyi
Fuel cells in power section
In 1839, a British Jurist and an amateur physicist named William Grove first discovered the principle of the fuel cell. Grove utilized four large cells, each containing hydrogen and oxygen,… Read more
Jul 01, 2011 | By Edvard Csanyi
Large and Small Wind Turbines are Different
Wind turbines are generally divided into two broad categories based on their rated capacity and their intended applications. Small wind turbines are typically less than 50 kW in size, but… Read more
Jun 29, 2011 | By Edvard Csanyi
New download! Easy calculate size of solar panels!
For the purposes of this guide, we are assuming that the solar energy generated by the panels will be stored in a battery or number of batteries. The basic principle… Read more
Jun 28, 2011 | By Edvard Csanyi
Who was James Prescott Joule?
James Prescott Joule was born on Christmas Eve 1818 into a wealthy Salford brewing family. A sickly child, he was tutored at home where he indulged his fascination for electricity… Read more
Jun 27, 2011 | By Edvard Csanyi
Typical applications of biomass
During Second World War the gasifiers were mainly employed for transportation purposes. However, in recent years the gasifiers have been employed mainly for stationary applications. For generating electricity, the producer… Read more
Jun 26, 2011 | By Edvard Csanyi
Technical analysis of LED light
A Light Emitting Diode (LED) is a semiconductor device which converts electricity into light. Each diode is about 1/4 inch in diameter and uses about ten milliamps to operate at… Read more
Jun 24, 2011 | By Edvard Csanyi
How much for the geothermal energy? Impacts, hm?
Geothermal power requires no fuel, and is therefore immune to fuel cost fluctuations, but capital costs tend to be high. Drilling accounts for over half the costs, and exploration of… Read more
Jun 22, 2011 | By Edvard Csanyi
Buchholz relay on oil transformer with conservator
The Buchholz relay has two oil-filled chambers with floats and relays arranged vertically one over the other. If high eddy currents, local overheating, or partial discharges occur within the tank,… Read more
Jun 20, 2011 | By Edvard Csanyi
What about the world’s wind resources?
When evaluating different methods of power generation some of the main questions inevitably concern the fuel proposed. Is there enough of it? Is it in the right places? It is… Read more
Jun 18, 2011 | By Edvard Csanyi
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
Thumbs down to the nuclear energy
Although for decades the arguments against nuclear power have been –and still are- strong and valid, there is an increasing group of nuclear companies supported by scientists and politicians, who… Read more
Jun 15, 2011 | By Edvard Csanyi