ETArch-SG: Uma proposta de arquitetura baseada em SDN para suporte de comunicação em smart grids

Abstract

Communication in the Electrical Power System (EPS) presents challenges to meet a number of important requirements, such as: wide scope, reliability, information sharing, security, availability, mobility, among others. Currently, almost all actions related to these communications are linked to non-automated processes, which must be performed by system operators (human). The publication of IEC 61850 standards has made it easier to automate EPS communication, including the ability to access a greater amount of information, with complete independence from device manufacturers, and is a significant step in the evolution of Smart Grids. However, the grid management, control and protection systems still lack alternatives that allow the access and effective use of these information, to overcome the challenges foreseen for the future of Smart Grids. In this scenario, Future Internet architectures have great potential for the development of new functionalities capable of meeting the requirements of this type of communication. In particular, this work presents an architecture based on SDN, called ETArch-SG, whose main objective is to offer more efficient support to the communication system in Smart Grids, when compared to conventional technologies. This work intends to attend the communications performed in the internal environment of the substations and also to help in the communication between the control centers and the intelligent devices, that measure the behavior of the transmission lines. The analysis of information about the global operation of an energy system and about the protocols governing the communication of data in this environment, allowed to propose peculiar solutions for the transportation of information of the supervisory system and for exchange of messages between intelligent devices, where the control and protection operations have fairly severe time requirements. In addition to improvements to more efficiently meet the time constraint requirements of various types of messages that travel through the grid, this work also presents contributions in automating the process of setting up Intelligent Electronic Devices (IEDs) and in optimizing resources through virtualization of the concentrator devices, which are essential between the communication of synchrophasors. The results presented here open up a whole range of possibilities for the work to continue in full evolution.