基于参数计算理论冲击电流下接地网的参数求取

Parameter calculation of grounding grid under impulse current based on the theory of parameter calculation

为保证变电站电力设备能在恶劣天气安全运行,研究了接地装置相关参数,阐述了参数计算理论法,并基于该方法建立了一种冲击电流下单层土壤中接地网模型,用于求取实际接地装置相关参数。通过计算实例检验,依托参数计算理论法且利用MATLAB编程得出的计算参数,与国际著名接地软件CDEGS进行比较,其结果差别不大。因此表明该方法能满足实际需求。

In order to guarantee that the substation equipment is able to operate in bad weather, this paper studied the relevant parameter of grounding device, described the parameters theoretical calculation method, established the model of grounding grid in the single layer soil under the impact current, used to calculate the actual grounding device related parameters. Through the calculation ,relying on parameter calculation theory and MATLAB programming, compared to the calculated parameters, with the international famous grounding software CDEGS obtained parameters, little difference. This indicates that the parameters obtained by this method can meet the actual demand.