【摘要】 雷击风电机时,风电机接地体散流能力的强弱决定风电机是否遭受雷击而损坏,而接地体的散流能力又受其拓朴结构制约.本文拟利用CDEGS仿真软件搭建仿真模型,分析风电机圆环复合接地体的冲击特性,探讨不同布置方式的接地体对冲击接地电阻的影响.不等间距布置同心圆接地体冲击接地电阻比等间距布置同心圆接地体冲击接地电阻低,节约材料,同时获得垂直接地棒对冲击接地电阻特性的影响,为实际工程中采用合适的方法降低风电机冲击接地电阻提供参考.更多还原

【Abstract】 When the wind motor is struck by lightning,the strength and weakness of the ground scatter capacity of the wind motor determines whether the wind motor is damaged by lightning strike,and the ground scatter capacity is restricted by its topological structure.In this paper,CDEGS simulation software was used to build the simulation model and analyze the impulse grounding characteristics of the ring composite grounding conductors so as to discuss the influence rule of different layout methods on the impulse grounding resistance.Unequal spacing of the impulse grounding resistance of concentric circular composite grounding conductors is lower than that of the equal spacing of the impulse grounding resistance of the concentric circular composite grounding conductors,thus saving materials.In addition,the influence of vertical grounding electrodes on the characteristics of the impulse grounding resistance was also obtained. This paper provides a reference for using proper method to decrease the impulse grounding resistance in practical project application.更多还原