We have been studying on estimating distribution of permittivity between measurement electrodes using capacitance and electric potential. Two arc electrodes were separated by long distance and there electrodes were surrounded by additional electrodes respectively. In past research work, we carried out numerical electric analysis for calculating the capacitance and electric potential using Finite Element Method (FEM) and compared with experimental and numerical results. The capacitance values were almost agreed with experimental and numerical results. However, the electric potential values were different between experimental and numerical results in conventional studies. In this paper, we proposed an equivalent circuit including the stray capacity and measurement method for capacitance, the electric potential in space between long distance electrodes was estimated.

中文翻译：

---

估计平行电极之间空间中的电位的研究

我们一直在研究使用电容和电势估算测量电极之间的介电常数分布。两个电弧电极分开很长的距离，那里的电极分别被附加的电极包围。在过去的研究工作中，我们使用有限元方法（FEM）进行了数值电分析，以计算电容和电势，并与实验和数值结果进行了比较。电容值几乎与实验和数值结果一致。但是，常规研究中的实验值和数值结果之间的电势值不同。在本文中，我们提出了一种等效电路，其中包括杂散电容和电容的测量方法，