高土壤电阻率山地风电场降阻装置设计要点  

Design Points of Resistance Reduction Device for Wind Farm in Mountainous Area with High Soil Resistivity

作　　者：赵显泽 ZHAO Xianze(Beijing Branch of Three Gorges Group Shanghai Survey,Design and Research Institute,Beijing 100010,China)

机构地区：[1]三峡集团上海勘测设计研究院北京分公司,北京100010

出　　处：《电工技术》2022年第11期70-73,共4页Electric Engineering

摘　　要：为了提高高土壤电阻率山地风电场降阻效果,对山地环境特点及土壤电阻率进行了分析,总结了山地风电场降低土壤电阻率的措施及降阻装置的设计要点。同时,提供了各种降阻装置的工频接地电阻计算,并利用系数法得出了各降阻装置与主接地网耦合工频接地电阻的计算方法。另外,还分析了风电场接地系统限制反击过电压和地电位升高的措施,以便在降阻难度极大的地区保障设备和人身安全。In order to improve the resistance reduction effect of mountain wind farm with high soil resistivity,through the analysis of the characteristics of mountain environment and soil resistivity,the measures to reduce soil resistivity and the design points of resistance reduction device of mountain wind farm are summarized.At the same time,the calculation of power frequency grounding resistance of various resistance reducing devices is provided,and the calculation method of coupling power frequency grounding resistance between each resistance reducing device and main grounding grid is obtained by using coefficient method.In addition,the measures to limit the counterattack over-voltage and ground potential rise of the wind farm grounding system are analyzed,so as to ensure the safety of equipment and personnel in the area where resistance reduction is very difficult.

关 键 词：山地风电场 降阻措施 耦合工频接地电阻 限制地电位 

分 类 号：TM76[电气工程—电力系统及自动化]