Abstract
Coordination of a power system with the phasor measurement devices (PMUs) in real time on the load and generation sides is carried out within the context of smart grid studies. Power systems equipped with information systems in a smart grid pace with external security threats. Developing a smart grid which can resist against cyber threats is considered indispensable for the uninterrupted operation. In this study, a two-way secure communication methodology underpinned by a chaos-based encryption algorithm for PMU devices is proposed. The proposed system uses the IEEE-14 busbar system on which the optimum PMU placement has been installed. The proposed hyperchaotic system-based encryption method is applied as a new security methodology among PMU devices. The success of results is evaluated by the completeness of data exchange, durations, the complexity of encryption-decryption processes, and strength of cryptography using a microcomputer-based implementation. The results show that the proposed microcomputer-based encryption algorithms can be directly embedded as encryption hardware units into PMU and PDC devices which have very fast signal processing capabilities taking into considerations the acceptable delay time for power system protection and measuring applications and quality metering applications which is 2 ms and 10 ms, respectively. While proposed algorithms can be used in TCP or UDP over IP-based IEEE C37.118, IEC 61850, and IEC 61850-90-5 communication frameworks, they can also be embedded into electronic cards, smartcards, or smart tokens which are utilized for authentication among smart grid components.
Highlights
A smart grid is defined as the provision of conventional electric power grids with modern information technologies
Complexity e security concept in the smart grid should be regarded within a wide range as to the grids consisting of various types of communication systems such as GSM networks, fiber optic lines, WiMAX, RS-232 and RS-485, cable lines, radio frequency lines, and power system communication lines [4]. e development of high-security hardware and computing infrastructure to ensure that all these hardware and systems work reliably is a matter of working separately within smart grid operations
It is the first time in the literature using a microcomputer with a hyperchaotic system encryption algorithm for allowing phasor measurement devices (PMUs) devices used in the smart grid to make secure two-way communication. e proposed security methodology is realized into a cryptographic engine ensuring a secure communication layer between PMU and phasor data concentrator (PDC) components via developed application server software
Summary
A smart grid is defined as the provision of conventional electric power grids with modern information technologies. A novel microcomputer with a hyperchaotic system encryption method is proposed to allow PMU devices to communicate with each other in a secure way in the smart grid. E proposed security methodology is based on a cryptographic engine ensuring a secure communication layer for PMU and phasor data concentrator (PDC) components For this purpose, application server software, which communicates with IEEE C37.118.1 compliant PMU devices via the Wireshark platform in real time, is developed. E results show that very fast and complex encryption capabilities of the proposed microcomputerbased encryption method can be used for ensuring secure communication among smart grid components which have very narrow time intervals such as PMUs. is paper is organized as follows: in Section 2, methodologies for modern power system analysis are introduced. It can be said that PMUs are widely acknowledged as one of the most promising developments in the field of real-time monitoring of power systems. e ability of PMUs to calculate synchronized phasors for voltages and currents instantaneously and more accurately has encouraged their consistent proliferation in power system networks all over the world
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