BULETINUL INSTITUTULUI POLITEHNIC DIN IAŞI - Universitatea ...

BULETINUL INSTITUTULUI POLITEHNIC DIN IAŞI
Publicat de
Universitatea Tehnică „Gheorghe Asachi” din Iaşi
Tomul LVI (LX), Fasc. 2, 2010
Secţia
CONSTRUCŢII DE MAŞINI
TECHNOLOGIES FOR MONITORING STRUCTURAL
DAMAGES ARISING IN THE FUNCTIONING
OF WIND TURBINES
BY
MIHAI FLORIN MĂNESCU and VALERIU PANAITESCU
Abstract. The need for sustainable development requires the use of renewable
energy, primarily to maintain the existing energy (fossil fuels) to a suitable level,
but also for environmental conservation. Accordingly, renewable energy sources
began to be intensively studied and developed, mainly in the last ten years. In
Romania, the first wind groups were put into service in 2005 (Ploiesti Industrial
Complex - a wind turbine Vestas V52 - 660 kW, relocated), now the installed power
being around 14 MW. For the purposes of harnessing wind energy for electricity
production, because at heights exceeding 100 m, the wind is not influenced by
existing deficiencies ground (trees, buildings, hills, etc..) Wind groups have become
increasingly high and access to review and repair is difficult. As a result of this it is
necessary to monitor the time of damage that may occur during operation of a wind
farm to reduce the time the wind group is stopped and production losses are as small
as possible. To ensure proper function safely it is necessary to implement a
monitoring system for structural resistance (MSR) of wind turbine. This system and
some of the damage assessment methods will be presented in this paper. The MSR
has two branches: a network of sensors that collect information and an algorithm /
software to interpret data from the sensors. Some of the technologies that can be
used, methods of ultrasonic, thermal scanning, x-rays, etc. will be presented in this
paper. Likewise, the most frequent types of structural damage that can occur in a
wind group will also be discussed in this paper.
Key words: wind turbine, monitoring structure resistance, sensors and damage
detection.
1. Introduction
In order to achieve sustainable development, which requires the use of
renewable energy, primarily to maintain the existing energy (fossil fuels) to a
suitable level, but also for environmental conservation, in the last 20 years has