中国电机工程学报2013，Vol.33Issue(1)：188-195,前插24,9.
土壤温度特性试验及其对圆环型直流接地极发热影响分析
Analysis on the Temperature Characteristic of Soil and Its Influence on the Cirque Grounding Electrode Heating
摘要
Abstract
In order to have a comprehensive analysis of the grounding electrode heating process and optimize the electrode design, this paper selects two different textures of soil to have a temperature simulation experiment. The temperature characteristic of soil water content, soil thermal parameters and soil resistivity obtained from the experiment results. According to the soil temperature characteristic, the finite element method and the electric-thermal dynamical coupling model were integrated to simulate the temperature rise of the cirque grounding electrode in the monopole ground return mode in a long duration, and then compare with the calculation method without considering the effect of soil temperature rise. The results of experiment and simulation indicate that: soil parameters will vary with the temperature rise, lead to grounding electrode have further heating, and the worse temperature rise can result in abnormal operating of the grounding electrode. Therefore, combine soil temperature characteristic with the grounding electrode design can ensure more safety operation of the grounding system.关键词
土壤热参数/温度特性/电热耦合/圆环型接地极/接地极温升Key words
soil thermal parameters/ temperature characteristic/ electric-thermal coupling/ cirque grounding electrode/ grounding electrode temperature rise分类
信息技术与安全科学引用本文复制引用
袁涛,骆玲,杨庆,司马文霞,王建东..土壤温度特性试验及其对圆环型直流接地极发热影响分析[J].中国电机工程学报,2013,33(1):188-195,前插24,9.基金项目
国家创新研究群体基金(51021005) （51021005）
国家重点基础研究发展计划(973项目)(2009CB724504) （973项目）
国家自然科学基金(51107153). （51107153）
