Mehdi Davoudi - Department of Electrical and Computer Engineering Buein Zahra Technical University, Buein Zahra, Qazvin, Iran
Amir Maleki Pargou - Faculty of Engineering and Technology Imam Khomeini International University Qazvin, Iran
Amir Hesam Olfati - Faculty of Engineering and Technology Imam Khomeini International University Qazvin, Iran

In this paper, a solution is introduced for the communication of protection systems in electrical substations with dispatching centers, aiming to resolve current existing problems in the telecommunications platforms in power systems by means of taking use of new generations of cellular communication, the third and the fourth. In many areas, however, there is probably no acceptable access to cellular communications networks. Thus, a solution named DOC, is presented, being able to be implemented on all new and existing generations of cellular communication, featuring a reliable, secure and rather fast communication platform for data transfer. The presented solutions are in accordance with dire needs of electricity distribution centers and can therefore be efficiently implemented with minimum alterations in the hardware configuration.

Power Protection; Relays; Communication System; SCADA; New Generation of Telecommunication; TD LTE; DOC1; Smart Grid