[1. Arshad, M., O’Kelly, B.C.: Offshore wind-turbine structures: a review. Proc. Inst. Civ. Eng. Energy 2013.166 (4) 139-152.10.1680/ener.12.00019]Search in Google Scholar
[2. Besnard, F., Bertling, L.: An approach for condition-based maintenance optimization applied to wind turbine blades. IEEE Trans. Sustain. Energy 2010, 1 (2) 1-7.10.1109/TSTE.2010.2049452]Search in Google Scholar
[3. Carlos, S., Sanchez, A., Martorell, S., Marton, I.: Onshore wind farms maintenance optimization using stochastic model. Math. Comput. Model. 2013, 57 (708) 1884-1890.10.1016/j.mcm.2011.12.025]Search in Google Scholar
[4. Carroll, J., McDonald, A.: Failure rate, repair time and unscheduled O&M cost analysis of offshore wind turbines. Wind Energy. 2015, 19 (6) 1107-1119.10.1002/we.1887]Search in Google Scholar
[5. Chandler, H.: Wind Energy – The facts, European Wind Energy Association. 2003.]Search in Google Scholar
[6. Ding, F., Tian, Z.: Opportunistic maintenance optimization for wind turbine systems considering imperfect maintenance actions. Int. J. Reliab. Qual. Saf. Eng. 2011, 18 (5) 1-18.10.1142/S0218539311004196]Search in Google Scholar
[7. Ding, F., Tian, Z.: Opportunistic maintenance for wind farms considering multilevel imperfect maintenance thresholds. Renew. Energy 2012, 45 (1) 175-182.10.1016/j.renene.2012.02.030]Search in Google Scholar
[8. European Wind Energy Association. Wind in power, 2014 European statistics. 2015.]Search in Google Scholar
[9. Faulstich, S., Hahn, B., Tavner, P. J.: Wind turbine downtime and its importance for offshore deployment. Wind Energy, 2011, (14), 327–337.10.1002/we.421]Search in Google Scholar
[10. Hameed, Z.: Role of grouping in the development of an overall maintenance optimization framework for offshore wind turbines. Proc. Inst. Mech. Eng. Part O J. Risk Reliab. 2012, 226 (6) S1, 584-601.10.1177/1748006X12464616]Search in Google Scholar
[11. Hameed, Z., Hong, Y.S., Cho, Y.M., Ahn, S.H., Song, C.K.: Condition monitoring and fault detection of WTs and related algorithms: A review. Renew. Sustain. Energy Rev. 2009, 1-39.10.1016/j.rser.2007.05.008]Search in Google Scholar
[12. Hau, E.: Wind Turbines: Fundamentals, Technologies, Applications, Economics, Springer, Sidcup, Kent, UK, 2006.10.1007/3-540-29284-5]Search in Google Scholar
[13. Herbert, G.M.J., Iniyan, S., Sreevalsan, E., Rajapandian, S.: A review of wind energy technologies, Renew. Sustain. Energy Rev. 2007, (11) 1117-1145.10.1016/j.rser.2005.08.004]Search in Google Scholar
[14. Jamieson, P.: Innovation in wind turbine design. Wiley, England, 2011.10.1002/9781119975441]Search in Google Scholar
[15. Kahrobaee, S., Asgarpoor, S.: A hybrid analytical-simulation approach for maintenance optimization of deteriorating equipment: case study of wind turbines. Electr. Power Syst. Res. 2014, 104 (1) 80-86.10.1016/j.epsr.2013.06.012]Search in Google Scholar
[16. Kang, J.C., Sun, L.P., Sun, H., Wu. C.L.: Risk assessment of floating offshore wind turbine based on correlation-FMEA. Ocean Engineering 2017, (129), 382-388.10.1016/j.oceaneng.2016.11.048]Search in Google Scholar
[17. Karyotakis, A., Bucknall, R.: Planned intervention as a maintenance and repair strategy for offshore wind turbine. J. Mar. Eng. Technol. 2010, A 16 27-35.10.1080/20464177.2010.11020229]Search in Google Scholar
[18. Laggoune, R., Chateauuneuf, A., Aissani, D.: Opportunistic policy for optimal preventive maintenance of a multi-component system in continuous operating units. Comput. Chem. Eng. 2009, 33 (9) 1499-1510.10.1016/j.compchemeng.2009.03.003]Search in Google Scholar
[19. Laura, C.S., Vincente, D.C.: Life-cycle cost analysis of floating offshore wind farms. Wind Energy, 2014, 66 (1) 41-48.10.1016/j.renene.2013.12.002]Search in Google Scholar
[20. Liu, W., Tang, B., Jiang, Y.: Status and problems of WT structural health monitoring techniques in China. Renew. Energy 2010, (35) 1414-1418.10.1016/j.renene.2010.01.006]Search in Google Scholar
[21. Nielsen, J.J., Sorensen, J.D.: On risk-based operation and maintenance of offshore wind turbine components. Reliab. Eng. Syst. Saf. 2011,96 (1) 218-229.10.1016/j.ress.2010.07.007]Search in Google Scholar
[22. Nilsson, J., Bertling, L.: Maintenance management of wind power systems using condition monitoring systems-life cycle cost analysis for two case studies. IEEE Trans. Energy Convers. 2007, 22 (1) 223-229.10.1109/TEC.2006.889623]Search in Google Scholar
[23. Santos, F., Teixeira, A.P., Guedes Soares, C.: Modelling and simulation of the operation and maintenance of offshore wind turbines. Journal of Risk and Reliability, 2015, Vol.229 (5) 385-393.10.1177/1748006X15589209]Search in Google Scholar
[24. Shafiee, M.: An opportunistic condition-based maintenance policy for offshore wind turbine blades subjected to degradation and environmental shocks. Reliab. Eng. Syst. Saf. 2015, 463-471.10.1016/j.ress.2015.05.001]Search in Google Scholar
[25. Shafiee, M.: Maintenance logistics organization for offshore wind energy: current progress and future perspectives. Renew. Energy 2015, 77, 182-193.10.1016/j.renene.2014.11.045]Search in Google Scholar
[26. Snyder, B., & Kaiser, M.: Ecological and economic cost-benefit analysis of offshore wind energy. Renewable Energy, 2009, 34(6), 1567–1578.10.1016/j.renene.2008.11.015]Search in Google Scholar
[27. Sorensen, J.D.: Framework for risk-based planning of operation and maintenance for offshore wind turbines. Wind Energy, 2009, 12 (5) 493-506.10.1002/we.344]Search in Google Scholar
[28. Spinato, F., Tavner, P.J., van Bussel, G.J.W., Koutoulakos, E.: IET Reliability of WT subassemblies. Renew. Power Gener. 2009, 3 (4) 387-401.10.1049/iet-rpg.2008.0060]Search in Google Scholar
[29. Stiesdal, H.: The wind turbine components and operation. Bonus Info, newsletter special issue, Bonus Energy A/S, Brande. 1999.]Search in Google Scholar
[30. U.S. Energy Information Administration: Levelized cost and levelized avoided cost of new generation resources in the annual energy outlook. 2014.]Search in Google Scholar
[31. Walford, C.: Wind turbine reliability: understanding and minimizing wind turbine operation and maintenance costs. Sandia report, SAND2006-1100. National Laboratories. 2006.10.2172/882048]Search in Google Scholar
[32. Wildeman, R.E., Dekker, R., Smit, A.C.J.M.: A dynamic policy for grouping maintenance activities. European Journal of Operation Research 1997, 99(3), 530–551.10.1016/S0377-2217(97)00319-6]Search in Google Scholar
[33. Zhang,X., Sun,L.P.: Floating offshore wind turbine reliability analysis based on system grading and dynamic FTA. J. Wind Eng.Ind.Aerodyn. 2016, (154) 21–33.10.1016/j.jweia.2016.04.005]Search in Google Scholar