基于CDEGS的接地极不同结构频谱响应特性研究

Study on Spectral Response Characteristics of Different Structures of Grounding Electrode Based on CDEGS

杆塔接地诊断有着重要作用。杆塔有其独有的特点,开发针对杆塔诊断的新方法有其必要性。运用CDEGS软件仿真分析电源单端注入、中端注入、交叉点注入3种不同方式下接地导体的频谱响应特性,探讨注入方式的不同对频谱响应曲线的影响,为新方法的提出提供思路。研究发现,不同的接地方式有相似的频谱特性;针对不同参数,接地方式的不同会使频谱响应曲线有差异:当半径变化时,不同接地方式的频谱曲线之间的差异几乎不变;当土壤电阻率变化时,土壤电阻率越大,差异越大。

The grounding diagnosis of pole and tower plays an important role. It is necessary to develop a new method for pole and tower diagnosis by its unique characteristics. The CDEGS software is used to simulate and analyze the spectrum response characteristics of the grounding conductor under three different ways,such as power supply single end injection,middle end injection and intersection point injection. The influence of different injection modes on the spectrum response curve is discussed,so as to provide ideas for the new method. The study found that different grounding methods have similar spectrum characteristics;for different parameters,the difference in grounding mode makes the spectrum response curves different: when the radius changes,the difference between the spectral curves of different grounding modes is almost invariable;when the soil resistivity changes,the greater the soil resistivity,the greater the difference.