In relation with the increased use of mobile phones during the last decades more concerns about possible harmful effects of electro-magnetic fields to human beings have been expressed. Overhead lines… Read more
Jul 16, 2018 | Edvard
Arc-suppression reactors are also named earth fault neutralisers or Petersen-coils after W. Petersen who launched the idea of this particular reactor application early in the previous century. In high voltage… Read more
Jun 25, 2018 | Edvard
A communication system consists of a transmitter, a receiver and communication channels. Type of medias and network topologies in communications provide different opportunities to advance the speed, security, dependability, and… Read more
Jun 04, 2018 | Edvard
As you already know, the real purpose of transmission line protection is to detect faults or abnormal operating conditions and to initiate corrective action. Protective relays must be able to… Read more
May 21, 2018 | Edvard
The arrangement of outdoor switchgear layouts and installations is mostly influenced by economic considerations, in particular adaptation to the space available and the operational requirements of reliability and ease of… Read more
May 07, 2018 | Edvard
Because of the predominantly inductive character of the power system, an active power flow between source and load must be accomplished with a phase lag between the terminals. Phase-shifting transformers… Read more
Apr 23, 2018 | Edvard
A substation can employ many relaying systems to protect the equipment associated with the station. The most important of these are: transmission and distribution lines emanating from the station, step-up… Read more
Apr 18, 2018 | Edvard
Several problems contribute to the overall reliability or unreliability of capacitor banks. In a detailed analysis of Kansas City Power & Light’s automated capacitor banks, Goeckeler reported that blown fuses… Read more
Apr 16, 2018 | Edvard
There are a number of problems that commonly occur in industrial and commercial networks, and some of them are covered in the following paragraphs. Coordination malfunctioning is leading to nuisance… Read more
Apr 11, 2018 | Edvard
Substations are locations where transmission lines are tied together. They fulfill a number of functions. One of them is that they allow power from different generating stations to be fed… Read more
Apr 09, 2018 | Edvard
