风电机组箱变布置及等电位电缆优化分析

Analysis and Research of Wind Turbine Box-Type Substation Layout and Optimization of Equipotential Cables

随着单台风力发电机组容量越来越大,风电场中风电机组与箱变之间连接的电缆用量也越来越多。该电缆截面大、用量大、费用高,现有常规方案所需电缆投资也越来越大,亟需进行改进优化,减少不必要的电缆投资。文章通过减小风电机组与箱变之间的间距、减少等电位电缆两个方面进行了详细论述分析,提出了优化方案,并与常规方案进行了经济性对比。结果表明优化方案具有明显的经济性优势,可为类似风力发电项目的设计优化工作提供一定的理论和实践依据。

With the increasing capacity of a single wind turbine generator set,more and more cables are used to connect wind turbines and box-type substations on wind farms.Due to its large cross-section,large consumption and high cost,the existing conventional scheme requires an increasing investment in cables,and there is an urgent need for improvement and optimization to reduce unnecessary cable investment.This paper provides a detailed discussion on reducing the distance between wind turbines and box transformers,as well as reducing equipotential cables.An optimized solution is proposed and compared with the conventional one in terms of economy.With its obvious economic advantages,the optimized solution provides a theoretical and practical basis for the design optimization of similar wind power projects.