计及土壤频变性的接地装置频域性能分析  

Analysis of the Frequency Domain Performance on Grounding Devices Considering Soil Frequency-Dependence

作　　者：李景丽[1] 王磊磊[1] 武东亚[2] 郭丽莹[1] 李渊博[1] 

机构地区：[1]郑州大学电气工程学院,郑州450001 [2]国网河南省电力公司河南电力调度控制中心,郑州450052

出　　处：《电瓷避雷器》2016年第3期48-52,57,共6页Insulators and Surge Arresters

基　　金：国家自然科学基金(编号:51307152)

摘　　要：电力工业的发展和全球气候的复杂变化,导致故障或雷击时接地系统面临新的问题。准确计算接地装置的频域性能可为接地系统优化设计提供合理依据。采用基于电磁场理论的有限元方法,通过加入Visacro-Alipio土壤频变公式,建立了计及土壤频变性的接地装置频域性能分析模型。通过比较接地网的仿真计算结果与CDEGS软件计算结果,验证了本文算法的准确性。对水平和垂直接地极频域性能的分析结果表明高频下计及土壤参数频变性时接地参数计算结果明显降低,准确性更高。The development of the electric power industry and the change of global climate lead to new problems when suffer malfunction or lightning. Therefore, it becomes necessary to calculate the frequency dependent characteristics of grounding equipment to design the grounding system. The author uses the finite element method（FEM） which is based on the electromagnetic field theory, through introducing into the Visacro-Alipio soil frequency-dependence formula, a grounding FEM model considering the soil frequency-dependence is established. Through the comparison of the simulation of grounding grid and the CDEGS results to verify the accuracy of the model. The results of the grounding electrode frequency domain performance show that the grounding parameter has higher accuracy when considering the soil frequency-dependence in high frequency.

关 键 词：接地装置 土壤频变性 有限元 频域性能 

分 类 号：TM862[电气工程—高电压与绝缘技术]