基于平价上网的海上风电可靠性研究

海上风电是最具规模化开发价值的可再生能源,预计2020年我国累计装机容量突破8.5GW。海上风电的运维成本在度电成本占比25%～40%。2019年起国家推行风电平价上网,对海上风电的发展带来深刻影响。通过海上风电度电成本分析,建立成本-效益模型。研究发现,风电设备的可靠性、可利用率决定了运维成本和度电成本的水平。基于成本-效益模型测算某海上风电项目的度电成本,风机设备可利用率为97.15%时,运维成本下降26.88%,度电成本最低,为0.575 2元/kW·h。

Reliability Research of Offshore Wind Power Based on Grid Parity

The offshore wind power is the most valuable renewable energy for large-scale development. The total?capacity of offshore wind power will be expected to exceed 8.5 GW by 2020 in China. The cost of operation & maintenance accounts for 25%-40% of levelized cost of electricity (LCOE). The government promotes the wind power grid parity since 2019, which will be far-reaching?effects on the development of offshore wind power. Based on the analysis of LCOE, a cost-benefit model is established. It is found that the reliability and availability of wind power equipment determines the level of the cost of operation & maintenance and LCOE. Based on the cost-benefit model, the lowest LCOE of one offshore wind power project is 0.5752 RMB/kW.h when the availability of wind power equipment is 97.15%, which the cost of operation & maintenance decreased by 26.88%.