Energy harvesting of cathodic protection currents in subsea and marine structures for wireless sensor power and communication. (15th June 2022)

• Record Type: Journal Article
• Authors: Hudson, Steven M.; Taylor, John T.; Bowen, Christopher R.
• Is Part Of: Applied energy. Volume 316(2022)
• Publication Date: 2022-06-15
• Subjects: Energy harvesting -- Cathodic protection -- Annulus monitoring -- Downhole -- Offshore -- Subsea; Power (Mechanics) -- Periodicals; Energy conservation -- Periodicals; Energy conversion -- Periodicals; 621.042
• DOI: 10.1016/j.apenergy.2022.119133
• Languages: English
• ISSNs: 0306-2619

Abstract

Highlights: Novel energy harvesting method. Example 'lead' application is described, analysed, verified and validated. Potential solution to 'lifetime' power of wireless sensors. Concept has the potential for broad application in the integrity monitoring of marine and subsea structures, e.g. foundations and internal corrosion of offshore wind turbines. Abstract: This paper provides the first report of a means to harvest energy from stray cathodic protection currents in marine structures and thereby continuously power wireless sensors. This method is distinct from previously reported methods which utilise a conventional anode–cathode arrangement in open seawater to create a voltage cell. The underlying theory, modelling, and experimental results are described for implementation on a real application, namely annulus monitoring in a subsea production well. A broad range of new applications is envisaged, including self-powered and lifetime monitoring of safety critical parameters on marine structures, including wind turbines.