ABSTRACT

A Proof-of-Concept (POC) low power-low current wireless sensor network (WSN) for corrosion detection and monitoring of offshore wind turbine (OWT)’s component, entitled iWindCr, has been developed and field trialled in one of the OWTs in the UK south region. This paper reports on the setting up and outcomes of this field trial. The trial has successfully demonstrated the working functionality of the WSN by measuring changes of the Open Circuit Potential (OCP) and Zero Resistance Ammeter (ZRA) electrochemical parameters over a period of time. The state of corrosion and estimated life of an M72 galvanised steel stud, part of the Monopile (MP)-transition piece (TP) flanged connection were evaluated using the real-time data from the WSN with reference to the material’s corrosion thresholds from the iWindCr database. The paper details the electrochemical analysis processes in relation to the Electrochemical Impedance Spectroscopy (EIS), Potentiodynamic Polarisation Curve (PPC) in addition to the OCP and ZRA techniques. The electrochemical parameters and corrosion threshold values from seawater immersion tests of the steel alloys SS316L and S355, the typical MP-TP materials are presented.

摘要

用于海上风力涡轮机 (OWT) 组件腐蚀检测和监测的概念验证 (POC) 低功耗低电流无线传感器网络 (WSN)，名为iWindCr，已在其中一个 OWT 中开发并进行现场试验在英国南部地区。本文报告了该现场试验的设置和结果。该试验通过测量开路电位 (OCP) 和零电阻电流表 (ZRA) 电化学参数在一段时间内的变化，成功展示了 WSN 的工作功能。使用来自 WSN 的实时数据并参考来自iWindCr数据库。该论文详细介绍了与电化学阻抗谱 (EIS)、动电位极化曲线 (PPC) 以及 OCP 和 ZRA 技术相关的电化学分析过程。介绍了钢合金 SS316L 和 S355（典型的 MP-TP 材料）海水浸泡试验的电化学参数和腐蚀阈值。