For decades, the power system was highly centralized. With the growing integration\nof distributed generations into the system, there is a necessity for\nbi-directional communication methods to monitor and control the remote\nassets. The primary objective of this paper is to develop a communication link\nfor monitoring and controlling a grid-connected inverter in a remote location.\nFurthermore, the paper presents developments that have been incorporated\nto improve the communication link. The literature survey indicates that\nLoRa is superior compared to other technologies, but has some security and\nreliability issues. This paper also presents an encryption algorithm to improve\nthe security of the LoRa link. Local data storage added to the system before\ntransmitting data increases the system reliability. A display at the transmission\nend is added to improve the user-friendliness of the communication\nlink. A Powerline Communication link is parallelly added to the LoRa link to\nimprove the reliability. Finally, tests are conducted with an actual inverter\nand the results are presented. The tests show that the developed communication\nlink has improved security and reliability, while its open nature makes it\nhighly scalable and adaptable for employment in other smart grid applications
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