Energy and Power
Flexible AC Transmission System – What and Why?
Flexible AC Transmission System (FACTS) have been evolving to a mature technology with high power rating. This technology has wide spread application, became a top rate, most reliable one, based on power electronics. The main purpose of these systems is… Read more
Dec 05, 2011 | By Edvard Csanyi
Transmission and Distribution
What is the reason beyond three phase transmission?
As the need for increased transmission line capacity have forced power utility and owner to maximize power density in existing transmission corridors. Many experienced have already been done on this, one way to get to this goal (increased capacity), is… Read more
Nov 28, 2011 | By Edvard Csanyi
High Voltage
North American versus European distribution systems
Distribution systems around the world have evolved into different forms. The two main designs are North American and European. For both forms, hardware is much the same: conductors, cables, insulators, surge arresters, regulators, and transformers are very similar. Both systems… Read more
Nov 17, 2011 | By Edvard Csanyi
Energy and Power
Energy Demand Factor, Diversity Factor, Utilization Factor, and Load Factor
This technical article discusses the five most important factors that are employed in the energy management: Demand Factor, Diversity Factor, Load Factor, Utilization Factor, and Coincidence Factor. The management of energy demand requires the efficient utilization of energy resources, the… Read more
Nov 14, 2011 | By Jignesh Parmar
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 be more complicated to construct than overhead lines. The design… Read more
Sep 21, 2011 | By Bipul Raman
Energy and Power
How reactive power is helpful to maintain a healthy system
We always tend to reduce reactive power to improve system efficiency. This is acceptable at some level. If the system is purely resistive or capacitance, it may cause problems in the Electrical system. AC systems supply or consume two kinds… Read more
Aug 29, 2011 | By Jignesh Parmar
Energy and Power
Improve power transfer with shunt capacitor banks
Shunt capacitor banks are used to an increasing extent at all voltage levels. There are a variety of reasons for this like the growing need for power transfer on existing lines while avoiding transfer of reactive power, better use of… Read more
Apr 24, 2011 | By Edvard Csanyi
Energy and Power
Protection Relay – ANSI Standards
In the design of electrical power systems, the ANSI Standard Device Numbers denote what features a protective device supports (such as a relay or circuit breaker). These types of devices protect electrical systems and components from damage when an unwanted… Read more
Feb 22, 2011 | By Edvard Csanyi
High Voltage
Gas-Insulated Transmission Line – GIL
The gas-insulated transmission line (GIL) is a system for the transmission of electricity at high power ratings over long distances. In cases where overhead lines are not possible, the GIL is a viable technical solution to bring the power transmitted… Read more
Jan 12, 2011 | By Edvard Csanyi
High Voltage
Basics Of Subtransmission Systems
Subtransmission systems are those circuits that supply distribution substations. Several different subtransmission systems can supply distribution substations. Common subtransmission voltages include 34.5, 69, 115, and 138 kV. Higher voltage subtransmission lines can carry more power with less losses over greater… Read more
Dec 17, 2010 | By Edvard Csanyi
Energy and Power
Historical Review of Power System Stability Problems
As electric power systems have evolved over the last century, different forms of instability have emerged as being important during different periods. The methods of analysis and resolution of stability problems were influenced by the prevailing developments in computational tools,… Read more
Dec 08, 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 a condition of equilibrium between opposing forces; instability results when… Read more
Oct 23, 2010 | By Edvard Csanyi
