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为采取有效的措施对杂散电流进行预测和预防,需要对管线上的杂散电流进行检测。针对杂散电流的无规律,快变化的特性,采用一种SCM-200a杂散电流测量仪对其进行检测。由于杂散电流的干扰,管地电位不断发生变化,因此可以将管地电位看作一随机变量,这个变量符合一定的分布规律,可以应用数理统计的方法分析这个随机变量。
In order to take effective measures to predict and prevent stray current, it is necessary to detect the stray current in the pipeline. For the irregular, fast changing characteristic of stray current, it is detected by a SCM-200a stray current meter. Due to the interference of stray current, the potential of the pipe is changing constantly. Therefore, the potential of the pipe can be regarded as a random variable. This variable accords with a certain distribution law, and this stochastic variable can be analyzed by mathematical statistics.