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Conference programme 

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Poster session

Lead Session Chair:
Stephan Barth, Managing Director, ForWind - Center for Wind Energy Research, Germany
Masoud Asgarpour Energy Research Centre of the Netherlands (ECN), The Netherlands
Co-authors:
Masoud Asgarpour (1) F P Rens Savenije (1) Ashish Dewan (1)
(1) Energy Research Centre of the Netherlands (ECN), Petten, The Netherlands
Poster Award Winner

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Poster
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Presenter's biography

Biographies are supplied directly by presenters at OFFSHORE 2015 and are published here unedited

Masoud Asgarpour is a wind energy researcher at the Energy research Centre of the Netherlands (ECN). He studied mechanical engineering and wind energy as his bachelor and master studies. Parallel to his research at ECN, currently he is also a doctoral research fellow at civil department of Aalborg University in Denmark. His research is mostly focused on site assessment, installation and reliability based O&M of offshore wind farms.

Abstract

Commercial Proof of Innovative Offshore Wind Installation Concepts using ECN Install tool

Introduction

Installation of offshore wind farms contributes approximately 15-20% of life cycle costs of an offshore wind farm. Moreover, because of its high dependency on weather conditions, it is associated with high risk. The high installation costs of offshore wind can be reduced significantly by optimal planning of the installation operations and resources. In contrary to the O&M, limited attention has been paid to the optimal installation planning of offshore wind farms. So far, there is no generic model available for optimizing and planning the whole supply chain of offshore wind installation.

Approach

Based on feedback from industry, a generic model for optimal planning of support structure, turbine and electrical infrastructure is developed at ECN. In this report, firstly the model is introduced and then, using several case studies its application to reduce the installation costs and risks is demonstrated.

Main body of abstract

With the input from the industry, a simulation based model is being developed by name of “ECN Install”. ECN Install considers three types of operation during the installation- loading components from a harbour to a vessel, traveling between harbours and wind farm and installation of wind farm components. For each type of operation, a comprehensive model based on the feedback of the industry partners is being developed.
Performing Monte Carlo simulations in time domain, several outputs can be derived, such as- delays, associated costs and required resources. Delays can be caused by unfavourable weather conditions, unavailability of technicians due to their working shifts and harbour lock. Installation costs consist of day rate of vessels, equipment, technicians and fixed costs such as insurance or consultancy.
In order to demonstrate the functionalities of the model several case studies are performed to find the optimal vessel, equipment and working shift schedule. In this report, the results of the case studies for a reference offshore wind farm are discussed.


Conclusion

ECN Install is a generic installation model and is aimed to be used by all parties involved in the wind farm installation. The model can be used by wind farm developers to calculate the overall planning and costs of installation or by contractors to determine the optimal installation resources and strategy. The model can also be used as commercial proof of new installation concepts, new vessel designs and innovative foundations. In future works, the model can be integrated in life cycle cost assessment tools to have a better estimation of the total costs for offshore wind.


Learning objectives
ECN Install can be used as a long term planning tool for developers, wind farm owners, investors and contractors, but also as a decision support tool in day-to-day operation to reduce the installation costs and the project risks. Furthermore, entrepreneurs can use the results of model as commercial proof of their new innovative installation solutions.