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
发布时间:2018-09-06 16:38
【摘要】: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。
[Abstract]:Under the background of energy crisis, offshore wind power has become a hot spot of new energy research, and the development of offshore wind power in China has just started. In order to study the grounding problem of offshore wind turbine units, the grounding grid structure and environment of offshore wind turbines are significantly different from those of onshore wind turbines. A simulation model using jacket foundation as natural earthing for offshore wind turbine unit is established by using CDEGS software. First, each conductor of the model is segmented, then the Green function of each conductor is solved by the complex image method, and finally the grounding impedance of the model is calculated by the superposition theorem. In addition, the influence of the water depth, the resistivity of seawater and the resistivity of seabed on the grounding impedance is calculated and compared. The results show that the jacket structure is used as the natural earthing body. It can ensure the grounding safety of offshore wind turbine and provide a reference for the grounding design of offshore wind turbine unit.
【作者单位】: 中国能源建设集团广东省电力设计研究院;武汉大学电气工程学院;
【分类号】:TM862;TM315
[Abstract]:Under the background of energy crisis, offshore wind power has become a hot spot of new energy research, and the development of offshore wind power in China has just started. In order to study the grounding problem of offshore wind turbine units, the grounding grid structure and environment of offshore wind turbines are significantly different from those of onshore wind turbines. A simulation model using jacket foundation as natural earthing for offshore wind turbine unit is established by using CDEGS software. First, each conductor of the model is segmented, then the Green function of each conductor is solved by the complex image method, and finally the grounding impedance of the model is calculated by the superposition theorem. In addition, the influence of the water depth, the resistivity of seawater and the resistivity of seabed on the grounding impedance is calculated and compared. The results show that the jacket structure is used as the natural earthing body. It can ensure the grounding safety of offshore wind turbine and provide a reference for the grounding design of offshore wind turbine unit.
【作者单位】: 中国能源建设集团广东省电力设计研究院;武汉大学电气工程学院;
【分类号】:TM862;TM315
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