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海上风电机组利用导管架结构作为自然接地体可行性研究

DOI: 10.16188/j.isa.1003-8337.2015.06.029, PP. 148-153

Keywords: 海上风机,导管架结构,复镜像法,接地阻抗

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Abstract:

在能源危机的背景下,海上风电已经成为新能源研究的热点,我国海上风电的发展才刚刚起步。海上风力发电机组接地网结构、所处环境等和陆上风力发电机组均有显著差异,为了研究海上风电机组组的接地问题,利用CDEGS软件建立了利用导管架基础作为海上风电机组组自然接地体的仿真模型。首先将模型的每一个导体进行分段,再通过复镜像法求解每一段导体的格林函数,最后通过叠加定理求解出模型的接地阻抗。此外,还计算比较了海水的水深,海水的电阻率和海床的电阻率等因素对于接地阻抗大小的影响程度,表明,利用导管架结构作为自然接地体,能够保证海上风力发电机组的接地安全,为海上风电机组组接地设计提供了参考。

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