基于安全火花试验装置的电感分断电弧电阻建模研究

发布时间：2018-06-06 00:45

本文选题：电感分断放电 + 电极结构　；参考：《电子学报》2017年05期

【摘要】：研究电感分断放电电弧电阻模型是建立电感电路非爆炸本安性能评价的基础.运用IEC安全火花试验装置对电感分断电弧放电特性进行试验研究,深入分析电弧电阻随放电时间的变化规律,并采用非线性回归的方法得出分断电弧放电时间与电感和初始电流之间的函数关系式.考虑安全火花试验装置钨丝和镉盘电极结构特点,建立了一种极间电弧放电区域的物理模型,并推断出二维泊松方程的边界条件.基于此,利用分离变量法求解泊松方程,推导出电弧电阻的数学表达式,得出了电感分断电弧放电电压和电流的关系表达式.仿真分析及实验结果证明了理论分析及所提出电弧电阻数学模型的准确性和可行性.
[Abstract]:The study of the arc resistance model is the basis for the evaluation of the non-explosive intrinsically safe performance of the inductance circuit. The characteristics of arc discharge in inductance break off are studied by using IEC safety spark test device, and the variation of arc resistance with discharge time is deeply analyzed. The nonlinear regression method is used to obtain the functional relationship between the arc discharge time and the inductance and the initial current. Considering the structural characteristics of tungsten wire and cadmium disk electrode in a safe spark test device, a physical model of arc discharge region between electrodes is established, and the boundary conditions of two-dimensional Poisson equation are deduced. Based on this, a mathematical expression of arc resistance is derived by solving Poisson's equation by the method of separating variables, and the relationship between arc discharge voltage and current is obtained. The simulation and experimental results show the accuracy and feasibility of the theoretical analysis and the proposed mathematical model of arc resistance.
【作者单位】：西安科技大学电气与控制工程学院;
【基金】：国家自然科学基金(No.51604217,No.51277149) 陕西省教育厅专项计划(No.14JK1459)
【分类号】：TM501.2

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