Energy and Power
Battery monitoring and maintenance guidelines
Battery monitoring has become a very popular topic, and many companies have either purchased equipment or are in the process of evaluating these systems. This article discusses why monitoring is… Read more
Nov 21, 2010 | By Edvard Csanyi
Energy and Power
The Need for Reactive Power Compensation
Except in a very few special situations, electrical energy is generated, transmitted, distributed, and utilized as alternating current (AC). However, alternating current has several distinct disadvantages. One of these is… Read more
Nov 19, 2010 | By Edvard Csanyi
High Voltage
ABB – 145kV Compact indoor substation with Disconnecting CB
Turnkey 145 kV S/S project for Borlänge Energi, Sweden, emphasizing the advantages of ABB Disconnecting Circuit Breakers. Small footprint enables indoor air insulated Switchgear solutions, increasing the power substation availability… Read more
Nov 15, 2010 | By Edvard Csanyi
Protection
Distance Relays
Distance relays respond to the voltage and current, i.e., the impedance, at the relay location. The impedance per mile is fairly constant so these relays respond to the distance between… Read more
Nov 12, 2010 | By Edvard Csanyi
High Voltage
Gas-Insulated Substations – GIS
A gas-insulated substation (GIS) uses a superior dielectric gas, SF6, at moderate pressure for phase-tophase and phase-to-ground insulation. The high voltage conductors, circuit breaker interrupters, switches, current transformers, and voltage… Read more
Nov 10, 2010 | By Edvard Csanyi
Lighting
Emergency lights
Indepandant emergency supply Many buildings must have some form of emergency lighting to come on if the electric supply to the ordinary lights fails. BS 5266: Emergency lighting, BS EN… Read more
Nov 10, 2010 | By Edvard Csanyi
Transformers
Oil-Filled, Inert-Gas System
A positive seal of the transformer oil may be provided by an inert-gas system. Here, the tank is slightly pressurized by an inert gas such as nitrogen. The main tank… Read more
Nov 08, 2010 | By Edvard Csanyi
Energy and Power
What is the cost of electricity?
Electrification in the early 20th century dramatically improved productivity and increased the well-being of the industrialized world. No longer a luxury – now a necessity – electricity powers the machinery,… Read more
Nov 02, 2010 | By Edvard Csanyi
Energy and Power
Short-Circuit Electrical Currents
A short circuit is one of the major incidents affecting electrical systems. The consequences are often serious, if not dramatic: Although short circuits are less and less likely to occur… Read more
Oct 28, 2010 | By Edvard Csanyi
Medium Voltage
Aluminum vs. Copper: Conductors in Low Voltage Dry Type Transformers
In North America, aluminum is the predominant choice of winding material for low-voltage, dry-type transformers larger than 15 kilovolt-amperes(kVA). In most other areas of the world, copper is the predominant… Read more
Oct 27, 2010 | By Edvard Csanyi
Solar Power
Generating Power In The Future – Solar Wind Power
As the world discovers new ways to meet its growing energy needs, energy generated from Sun, which is better known as solar power and energy generated from wind called the… Read more
Oct 24, 2010 | By Edvard Csanyi
Energy and Power
Power System Stability
Power system stability is the ability of the system, for a given initial operating condition, to regain a normal state of equilibrium after being subjected to a disturbance. Stability is… Read more
Oct 23, 2010 | By Edvard Csanyi
Cables
Types of Underground Lines
There are two methods of installing underground lines. In the first method, underground raceway systems (ducts) are installed below grade and then cable is pulled through them. Ducts may or… Read more
Oct 22, 2010 | By Edvard Csanyi
News
Introducing EEP
Hi to everyone, we are working hard on EEP, which is by the way supported by CsanyiGroup – also electrical engineering portal. Content will be similar like CsanyiGroup’s, but with… Read more
Sep 16, 2010 | By Edvard Csanyi
Medium Voltage
Comparison Between Vacuum and SF6 Circuit Breaker
Until recently oil circuit breakers were used in large numbers for Medium voltage Distribution system in many medium voltage switchgears. There are number of disadvantages of using oil as quenching… Read more
Sep 05, 2010 | By Edvard Csanyi
