基于风资源和风机参数的风电场变压器电能损耗计算研究

摘要

风机输出功率受风速影响的不确定性，造成了风电场变压器传输功率变化频繁。在风电场节能评估中通常采用《电力系统设计手册》中电能损耗的计算方法，但计算结果与风电场变压器实际电能损耗存在偏差。文中从变压器电能损耗计算的基本原理出发，依据风电场风资源和风机参数，提出了一种新的风电场变压器电能损耗计算方法，通过多个风电场实际计算结果的分析比较，表明了该方法更符合实际，具有较高的精度和实用性。%As the power output of wind turbine generation is affected by uncertainty of wind speed, the power transformed by transformers in wind farms varies frequently. There exists deviation in calculating the energy loss of transformers in wind farms by using the method from “Electrical system design manual”. This paper proposes a new calculation method on the basis of the wind energy resources and wind turbine parameter. It is indicated that the proposed method is more accurate and practical by comparing and analyzing the actual data from multiple wind farms.