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据统计，在国内较大的石油静电事故中，铁路油罐车装油事故占首位，因而对油罐车装油过程中的静电研究显得特别重要。根据静电场基本方程和铁路油罐车静电场边界特征，建立了电场计算模型并采用超松驰迭代法求解。计算结果表明：在油罐车装油过程中油面电位随着液面上升而变化，最高电位出现在１／２～３／４容积处。这一变化趋势与实测数据符合。根据所建模型建立了一整套仿真软件，该软件为安全设计、危险性预测提供了科学的依据。
According to statistics, in the domestic large oil static accidents, oil tanker oil loading accidents accounted for the first place, so the tanker loading process of static electricity is particularly important. According to the basic equation of electrostatic field and the boundary conditions of electrostatic field of railway tanker, the electric field calculation model is established and solved by over-relaxation iteration method. The calculation results show that the potential of the oil surface changes with the rising of the liquid level in the process of loading the tanker truck, and the highest potential appears at 1/2 ~ 3/4 volume. This trend is consistent with the measured data. A set of simulation software is built according to the model, which provides a scientific basis for safety design and risk prediction.