入地电流干扰地电场观测的仿真模拟  

Simulation of the Interference of Grounding Current on Geoelectric Field Observation

作　　者：郭宇鑫 赵卫红 李玉 张骞 高熹微 GUO Yuxin;ZHAO Weihong;LI Yu;ZHANG Qian;GAO Xiwei(Gaoyou Seismological Station in Jiangsu,Gaoyou 225600,China)

机构地区：[1]江苏省高邮地震台,江苏高邮225600

出　　处：《华南地震》2021年第1期60-64,共5页South China Journal of Seismology

基　　金：江苏省地震局青年科学基金项目(201911)。

摘　　要：高压直流输电经接地极产生高值入地电流,干扰台站地电场观测。分析了入地电流对大地电场造成的影响,并对接地极电流场的计算方法进行了推导。应用有限元方法,通过ANSYS软件的workbench平台,建立地层模型,模拟求解接地极产生电场的分布,分析了入地电流、土壤电阻率和地理单元的影响作用,为地电台站防护距离的确定提供了参考。High value grounding current is generated by HVDC transmission through grounding electrode,which interferes with the observation of geoelectric field.The paper analyzes the influence of the grounding current on the earth electric field,and deduces the calculation method of the grounding electrode current field.The article establishes a stratum model,simulates and solves the distribution of the electric field generated by the grounding electrode,analyzes the influence of the grounding current,the soil resistivity and the geographic unit,which provides a reference for the determination of the protection distance of the geoelectric station.

关 键 词：直流接地极 高压直流输电 地电场观测 ANSYS 

分 类 号：P315.7[天文地球—地震学]