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本文是在对中国东部地电台站受干扰情况进行调查统计的基础上,运用均匀半空间电场分布的基本原理,推导出了符合目前台站精度要求的各种工业游散电流干扰源避开距离的计公式;避开距离是干扰源漏电等效电流强度的线性函数,并与所要求的信噪比,供电极距的长度成正比,与工作电流 I_0成反比。文章讨论了公式中各个因子的含义及取值方法,最后结合实际情况,举例说明了应用该公式的方法。
Based on the investigation and statistics of the interference from the stations in the eastern part of China, this paper uses the basic principle of the uniform half-space electric field distribution to deduce the distance between various sources of industrial scattered current interference that meet the current station accuracy requirements The equation of avoiding the distance is a linear function of the leakage current equivalent intensity of the interference source and is proportional to the required signal to noise ratio and the length of the electrode pitch and inversely proportional to the operating current I_0. The article discusses the meaning and value of each factor in the formula, and finally gives an example of the method of applying the formula according to the actual situation.