Simultaneous optimization of electrical interconnection configuration and cable sizing in offshore wind farms

Offshore wind farm (OWF) is the largest renewable energy resource. The electrical interconnection cost of OWFs is a considerable fraction of the overall design cost of the farm. In order to minimize the investment and operational costs, this paper proposes an optimization formulation to find the optimal electrical interconnection configuration of wind turbines (WTs), and the optimal cable sizing simultaneously. This simultaneous minimization of total trenching length and cable dimensions creates a complex optimization problem that is solved by the harmony search (HS) algorithm. In this paper, two distinct methods of full and partial optimal cable sizing are considered to comprehensively assess the optimal interconnection layout of OWFs. Furthermore, various shipping and burying costs as well as various WTs power ratings are considered in order to investigate their impact on the optimal electrical interconnection system. The optimal electrical interconnection design obtained by the HS algorithm corresponds to a lower cost that together with the technological developments can help policy makers increase the use of offshore wind energy as a feasible unlimited renewable resource in their energy production portfolios.

[1]  Zong Woo Geem,et al.  A New Heuristic Optimization Algorithm: Harmony Search , 2001, Simul..

[2]  J. A. Voormolen.  Unravelling historical cost developments of offshore wind energy , 2015 .

[3]  Dan Bai,et al.  Optimal Design Method of Looped Water Distribution Network , 2007 .

[4]  A. G. Dutton,et al.  An Offshore Wind Energy Geographic Information System (OWE-GIS) for assessment of the UK's offshore wind energy potential , 2016 .

[5]  Skender Kabashi,et al.  Simulation the Wind Grid Code Requirements for Wind Farms Connection in Kosovo Transmission Grid , 2012 .

[6]  L. Johanning,et al.  Offshore wind farm electrical cable layout optimization , 2015 .

[7]  István Erlich,et al.  Offshore Wind Power Generation Technologies , 2013, Proceedings of the IEEE.

[8]  Z. Geem.  Optimal Design of Water Distribution Networks Using Harmony Search , 2009 .

[9]  Zhe Chen,et al.  Combined optimization for offshore wind turbine micro siting , 2017 .

[10]  Zhe Chen,et al.  Optimisation for offshore wind farm cable connection layout using adaptive particle swarm optimisation minimum spanning tree method , 2016 .

[11]  Peter Wall,et al.  Optimal Electric Network Design for a Large Offshore Wind Farm Based on a Modified Genetic Algorithm Approach , 2012, IEEE Systems Journal.

[12]  T. J. Overbye,et al.  A clustering based wind farm collector system cable layout design , 2011, 2011 IEEE Power and Energy Conference at Illinois.

[13]  Graham Ault,et al.  Electrical collector system options for large offshore wind farms , 2007 .

[14]  Je-Seok Shin,et al.  Study on Designing for Inner Grid of Offshore Wind Farm , 2015 .

[15]  Michele Samorani,et al.  The Wind Farm Layout Optimization Problem , 2011 .

[16]  Weerakorn Ongsakul,et al.  Design of optimal wind farm configuration using a binary particle swarm optimization at Huasai district, Southern Thailand , 2016 .

[17]  Zhe Chen,et al.  Overall Optimization for Offshore Wind Farm Electrical System , 2017 .

[18]  A. Ramos,et al.  Stochastic Optimization Model for Electric Power System Planning of Offshore Wind Farms , 2011, IEEE Transactions on Power Systems.

[19]  Andres Ramos,et al.  Optimal Design of the Electrical Layout of an Offshore Wind Farm Applying Decomposition Strategies , 2013, IEEE Transactions on Power Systems.

[20]  L. Padma Suresh,et al.  Power Electronics and Renewable Energy Systems , 2015 .

[21]  W. Kempton,et al.  Pricing offshore wind power , 2011 .

[22]  T. J. Overbye,et al.  Optimal Wind Farm Collector System Topology Design Considering Total Trenching Length , 2012, IEEE Transactions on Sustainable Energy.

[23]  Kyung-Sup Kim,et al.  Advanced Harmony Search with Ant Colony Optimization for Solving the Traveling Salesman Problem , 2013, J. Appl. Math..

[24]  Mohamed Machmoum,et al.  Optimization of the Connection Topology of an Offshore Wind Farm Network , 2015, IEEE Systems Journal.

[25]  W. Han,et al.  A frictionless contact problem for viscoelastic materials , 2002 .

[26]  Yingying Chen,et al.  A novel technique for the optimal design of offshore wind farm electrical layout , 2013 .

[27]  Thomas Worzyk,et al.  Submarine power cables , 2009 .

[28]  Min-Der Lin,et al.  Application of immune algorithms on solving minimum-cost problem of water distribution network , 2008, Math. Comput. Model..

[29]  Minrui Fei,et al.  A Discrete Harmony Search Algorithm , 2010 .

[30]  Javier Serrano González,et al.  A New and Efficient Method for Optimal Design of Large Offshore Wind Power Plants , 2013 .