RIASSUNTO
Offshore fish farms remain a vibrant and important production sector for seafood in the aquaculture industry. Being offshore with no grid-based power supply, the continuity and quality of the power supply to the fish farm is crucial. This paper presents an implementation of an Internet of Things (IoT)-based dc nanogrid in an offshore fish farm. The standalone self-sustainable dc nanogrid primarily consists of photovoltaic panels as the power supply and a battery bank as the energy storage. An added feature of the system is a variety of dc voltages with differentiated sockets to cater to different dc-powered loads and appliances. There are various sensor points in the system to acquire readings of temperature, voltage and current for monitoring of the performance of the system. The system is enhanced with IoT features, which give the user the option to access the local computer remotely to monitor and manage the system or to view real-time data on a cloud platform. Smart features are also added in the system to detect abnormal readings of data and send warning emails to the user.