Bachelor or Master Thesis at Ramboll: Impact of Wind Farm Control Technologies on a Jacket Support Structure Design

Within the New Service department in our Offshore Wind Sector in Hamburg, we are currently seeking a master or bachelor student (m/f) who will investigate the impact of wind farm control technologies on a 10 MW jacket foundation design.

Introduction
The increasing scarcity of available land for the construction of wind farms in Germany has led to the construction of parks with larger plant numbers and denser installation of the wind turbines. This poses new challenges to the regulation of energy capture and wake control. In a wind farm, the wind passing through the rotor of a turbine continues as a wake stream with a lower energy level and higher turbulence. Downstream wind turbines exposed to the less profitable flow show a production deficit and increased manual vibration from turbulence. This causes increased wear of the components which leads to higher maintenance costs.

Wind farm control aims to find solutions to improve the wind farm performance and lifetime by regulating the individual turbines such as to account for the interaction between the wake and the turbine. Optimizing, however, the revenue of the entire wind farm requires a dependency between the individual control algorithms and to accept the losses and higher wear of one individual turbine in order to increase the overall income of the park.

Problem Description
This master thesis investigates the changes in production and loads of the wind turbines in the wind farm caused by controller application. The load impact is assessed on the steel support structure of the wind turbine tower. The investigated support structure is a state-of-the-art reference Jacket foundation design supporting a 10MW wind turbine.

The study will result in a benchmark of different wind farm controllers measured by the dynamic load alternation of the Jacket design, for which a simulation environment is created that reflects the controller effects and the dynamic wind and wave loading. Simulations are performed in LACflex, an aeroelastic simulation software for load and performance calculations, for different baseline scenarios. The relevant design load cases need to be identified to create the basis for a profound analysis of the absorbed forces of the Jacket design. Furthermore, the master thesis aims to identify the critical areas of the Jacket design and detect the impact of different controller technologies as well as the effects of wind and wave misalignments. The work is situated in the context of a current international project, which intends to thoroughly investigate the new approach of closed-loop wind farm control and make it accessible to the wind industry.

Approach
It is envisioned that the project consists of the following steps:

  • Review of existing controller technologies and their effect on structure loads of wind turbines
  • Definition of design load cases, baseline scenarios, and environmental conditions to build a profound load analysis
  • Building the simulation model of the 10MW wind turbine with the Jacket support structure and integrating the wind farm controllers in LACflex
  • Load analysis of the steel support structure with wake control in different load case scenarios
  • Benchmarking of the different control technologies through interpretation of the results from the load calculations

Your Profile

  • You are a master student in the field of Civil Engineering, Mechanical Engineering, or comparable
  • You are interested in the topic of wind energy and the effects of wind and wave loads
  • Ideally, you have experience in steel construction, structural dynamics and programming
  • You enjoy working as part of a team and are motivated to learn new skills

Interested?

If you are interested in writing your master thesis in a renown and international engineering company about a highly topical issue of the industry, then we look forward to receiving your application documents with information to your earliest possible stating date via our online application portal on www.ramboll.de/karriere!

Location:                              Ramboll Offices, Stadtdeich 7, 20097 Hamburg

Timeframe:                         6 months, starting as soon as possible

Supervisor at Ramboll:      Dipl.-Ing. Ursula Smolka, M.Sc. Marie-Antoinette Schwarzkopf

Ostateczny termin 2018-10-16
Miejsce pracy Hamburg

Ramboll Polska Sp. z o.o.

Ramboll Polska Sp. z o.o.
ul. Bitwy Warszawskiej 1920 r. 7
02-366 Warszawa
KRS: 0000029189 | NIP: 526-02-06-652 | REGON: 002202297
Tel: +48 22 372 0050
Fax +48 22 372 0080

Mail: rpl-biuro@ramboll.com