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Technical Articles

Energy and Power

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

Axial flow francis hydraulic hydro-turbine generator set
SCADA

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

SCADA communication vulnerabilities
Electronics

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

Designing Raw DC Power Supplies
Energy and Power

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

The Polymer Electrolyte Membrane (PEM) fuel cells
Wind Power

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

Large and Small Wind Turbines are Different
Energy and Power

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

James Prescott Joule
Biomass Energy

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

Typical applications of biomass
Lighting

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

Technical analysis of LED light
Transformers

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

Buchholz relay
Wind Power

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

Causeymire Wind Farm
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

HIS - Highly Integrated Switchgear, Type 8DQ1
Energy and Power

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

Thumbs down to the nuclear energy


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