地电阻率观测中高压干扰场的研究

为研究地电阻率观测中高压干扰场的性质及影响,我们在山东、河南、辽宁等地共14处进行了高压干扰场现场观测,分别对22万伏、1l万伏、3.5万伏、1万伏四种不同电压级别三线制及1万伏二线一地制高压干扰进行了研究,取得了对高压干扰场性质的认识,指出其分布和频率特征,影响因素,并通过拟合计算给出高压干扰场空间分布所遵循的数学表达式,从而为克服高压干扰提供了科学依据.在上述研究基础上提出了克服高压干扰的具体途径. 

ON A STUDY OF THE INTERFERENCE FIELD OF HIGH VOLTAGE POWER LINES IN EARTH RESISTIVITY OBSERVATION

In order to study the nature and effect of interference fields of high voltage power lines on earth resistivity observation,we carried out observations of high voltage interference fields for 220103V,110103V,35103V and 10103V power lines respectively at 14 site in Shandong,Henan and Liaoning provinces. We obtained some knowledge about the nature of high voltage interference fields and pointed out their characteristics in frequency,spatial distribution and controlling factors Meanwhile,by numerical fitting computation,a mathematical expression describing the spatial distribution of high voltage interference field is obtained,thus providing a scientific basis to eliminate its effect. On the basis of the above study,some methods to eliminate the high voltage interference are suggested.