Damage detection of wind turbine supporting structures using an improved harmony search algorithm

authored by

Mahmoud M. Jahjouh, Udo Nackenhorst

Abstract

Offshore Wind Energy Conversion Devices (OWECDs) are sensitive structures subjected to high force fluctuations making them prone to damage and present a challenge for in-situ structural identification due to the rough environment of offshore locations. Thus a remote identification and damage detection technique is required to keep track of any significant changes to the structural parameters of the OWECD. It is intended to present a structural identification and damage detection scheme using a Modified Adaptive Harmony Search coupled with a Modified Search Space Reduction Method (MAHS-MSSRM) to determine the structural stiffness of a damaged supporting structure of a numerically modeled OWECD based on its vibration response. The studied OWECD is an idling baseline 5-MW reference wind turbine developed by the National Renewable Energy Laboratory (NREL) identified under varying degrees of noise and different sensor configurations. The resulting identification accuracy and robustness were satisfying and encourage further investigation of the identification scheme with multiple damage locations, smaller damage values and unaligned inflow winds.

Organisation(s)

Institute of Mechanics and Computational Mechanics

Type

Conference article

Journal

Vibroengineering Procedia

Volume

6

Pages

87-92

No. of pages

6

ISSN

2345-0533

Publication date

01.10.2015

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Electrical and Electronic Engineering, General, Control and Systems Engineering, Mechanical Engineering

Sustainable Development Goals

SDG 7 - Affordable and Clean Energy