Abstract
The use of Internet-connected devices at homes has increased to monitor energy consumption. Furthermore, renewable energy sources have also increased, reducing electricity bills. However, the high cost of the equipment limits the use of these technologies. This paper presents a low-cost secured-distributed Internet of Things (IoT) system to monitor and control devices connected in a polygeneration microgrid, as a combined power system for local loads with renewable sources. The proposed mechanism includes a Wireless Sensor Actuator Networked Control System that links network nodes using the IEEE 802.15.4 standard. The Internet communication enables the monitor and control of devices using a mobile application to increase the efficiency. In addition, security mechanisms are implemented at several levels including the authentication, encryption, and decryption of the transmitted data. Furthermore, a firewall and a network intrusion detection-and-prevention program are implemented to increase the system protection against cyber-attack. The feasibility of the proposed solution was demonstrated using a DC microgrid test bench consisting of a diverse range of renewable energy sources and loads.
Highlights
According to the United States Energy Information Administration (EIA), over $370 billion has been spent annually in recent years on electricity generation
This paper presents a cyber-physical system consisting of a low-cost secure Internet of Things (IoT) mechanism for monitoring and controlling appliances/devices connected in a polygeneration microgrid
Fail2Ban is used for intrusion prevention; this framework protects the sink node (S-N) against brute force attacks and tracks the log files generated in order to detect malicious activity
Summary
According to the United States Energy Information Administration (EIA), over $370 billion has been spent annually in recent years on electricity generation. The integration of an IoT monitoring systems would improves the network performance to make a more resilient and efficient cyber-physical system. Since this environment is connected to the Internet, it needs to be protected from security threats. This paper presents a cyber-physical system consisting of a low-cost secure IoT mechanism for monitoring and controlling appliances/devices connected in a polygeneration microgrid. The mobile application allows the user to control all the registered electric appliances as well, and, according to the literature, these smart homes applications might achieve around 8% reduction in energy consumption [14,15].
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