Smart Grid Security: Survey and Challenges

Smart grids connect millions of devices and enable efficient power distribution. The biggest advantage of smart grid networks is their use in the distribution of renewable energy. In addition to the significant benefits that smart grids bring, it is necessary to address the issue of cyber security, which is all the more important as energy networks are a part of critical infrastructures. This paper discusses communication protocols used in smart grid networks. It focuses on the most widely used protocol: DLMS / COSEM. The paper deals with the security mechanisms, authentication methods, encryption, and logic and volumetric attack resistance. Furthermore, this paper deals with the security levels of smart meters and concentrators. It also presents currently available DLMS clients and explains the necessity of developing own DLMS client. The aim of this paper is to identify the problems of smart grid networks and to outline future solutions in this area.