Each neutral earthing system has advantages and disadvantages for the safety of property, electromagnetic compatibility or continuity of service. The main system must therefore be chosen according to these criteria,… Read more
Jul 18, 2018 | Edvard
Since IEC 61850 was published as an international standard for communication in substations, the standard has found broad acceptance on the markets. In the first substations to use it, the… Read more
Jul 04, 2018 | Edvard
Selection of proper relay is one of the most important stages to have a reliable network. In this article, selection of relay for incoming and outgoing feeders for LV switchgears… Read more
Jul 02, 2018 | Edvard
The Digital Substation is a term applied to electrical substations where operation is managed between distributed intelligent electronic devices (IEDs) interconnected by communications networks. It became possible by using computing… Read more
Jun 27, 2018 | Edvard
The CTs (current transformers) and VTs (voltage transformers) are provided in the plants to reduce the voltage and current values of the plant to values such as to be able… Read more
Jun 20, 2018 | Edvard
There are many methods applied to bolster the short circuit withstand capability of the transformers: improvement of the materials, reforming of the design and good maintenance in the operation process… Read more
Jun 13, 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
Transformers are important system components available in many different constructions. The range of HV transformers reaches from small distribution transformers (from 100 kVA) up to large transformers having several hundred… Read more
May 14, 2018 | Edvard
This technical article reviews substation level data acquisition architecture and communication protocol described in IEC 61850. IEC 61850 is the current international standard for substation automation (SA). The focus of… Read more
May 09, 2018 | Edvard
