输变电设备接地装置阻抗值影响因素分析  

Analysis of Factors Affecting the Ground Impedance Value of Transmission and Transformation Equipment

作　　者：闫旭 杨文良[1] 王振中 刘卓 YAN Xu;YANG Wenliang;WANG Zhenzhong;LIU Zhuo(Inner Mongolia Power Research Institute,Hohhot 0l0020,China)

机构地区：[1]内蒙古电力科学研究院,内蒙古呼和浩特010020

出　　处：《电工技术》2021年第15期133-134,137,共3页Electric Engineering

基　　金：内蒙古电力(集团)有限责任公司2019年科技项目“接地技术试验平台搭建和应用”(编号2019-36)。

摘　　要：接地改造工程中采用的降阻措施很多,但部分措施的实际应用效果并不理想。为此搭建了户外实体接地装置试验场并构建了对应的接地网仿真模型,以探讨不同接地材料、敷设深度、接地面积及接地体长度影响条件下的接地装置阻抗情况。通过对不同接地网模型的仿真计算并结合实际测量,确认了接地阻抗值直接取决于接地体的面积,而接地材料、敷设深度和接地体长度对接地装置阻抗值影响较小。There are many resistance reduction measures adopted in grounding reconstruction projects,but the actual application effects of some measures are not ideal.To this end,an outdoor physical grounding device test field was built and a corresponding grounding network simulation model was constructed to explore the impedance of the grounding device under the influence of different grounding materials,laying depths,grounding areas and grounding body lengths.Through the simulation calculation of different grounding network models and the actual measurement,it is confirmed that the grounding impedance value directly depends on the area of the grounding body,while the grounding material,laying depth and length of the grounding body have little effect on the impedance value of the grounding device.

关 键 词：接地装置 阻抗值 仿真与实测 接地面积 

分 类 号：TM862[电气工程—高电压与绝缘技术]