【作者】 向仲卿；

【导师】 李世作；

【作者基本信息】 广西大学 ， 高电压与绝缘技术， 2007， 硕士

【摘要】 随着电力工业的迅猛发展，输电电压等级越来越高，紧凑型输电线路也获得了越来越广泛的应用。本文通过研究国内外有关紧凑型输电线路电场计算的相关理论，推导出了一种新的计算紧凑型输电线路表面场强的方法，该算法能较好的反映出表面电荷和场强沿导线圆周的分布情况，为压缩线路的相间距离，减小输电线下的地面场强，以及导线的优化布置方面提供了一定的理论依据。论文是对紧凑型输电线路表面场强的理论性研究，是在传统的计算方法的基础上，采用连续分布电荷的概念，运用线性插值的数学方法，通过将导线沿圆周方向剖分成相等的单元，导出了新的电位方程的表达式，并采用数值分析的方法，结合紧凑型输电线路的实际进行了分析。该方法考虑了电荷沿导线表面分布的不均匀性，并根据三相电压交变的特点，采用相量法来分析计算，使问题的分析更接近于实际。论文运用VB6.0软件进行编程计算。通过改变线路参数(电压初相角、相间距离等)，计算得到电场强度沿输电线路表面的分布规律，各相电荷分布和各子导线的电荷分布情况，并对各相导线的计算结果进行了细致的分析比较，分析了影响导线表面场强的一些因素，并比较了输电线路几种不同的排列方式下地面场强的分布规律。更多还原

【Abstract】 With the rapid development of the power industry and the increasingly high voltage of transmission lines, the compact transmission lines also haved been widely used. This paper by studying the relevant theories of the compact electric transmission lines on domestic and foreign, deduces a new formula method to calculate the surface electric field intensity of compact transmission lines. The method can better reflect the surface charge and electric field intensity along the circumference of the cable distribution, and provides some theoretical basis for compressing the phase distance of transmission lines, reducing the electric field intensity under the ground, optimizing the layout of the transmission lines.The paper is about the electric field intensity,s theoretical study of the compact transmission lines. Based on the traditional calculation method, by introducing a concept of continuous distribution charge, uses a mathematical method of linear interpolation, puts wire along the circumferential direction subdivided into the same unit, derives a new equation of potential expression, and uses the numerical analysis method , analysis compact transmission lines based on the actual.This method takes the uneven distribution of charge along the wire surface, according to the characteristics of three-phase alternating voltage, uses the phasor method to calculate and analyse, makes the analysis closer to reality.The paper uses the Visual Basic 6.0 programming software to calculate. By changing the parameters of lines(early phase of voltage, distance of phase to phase etc), calculates the electric field intensity distribution along the surface of the transmission lines, the charge distribution of each phase and each split lines, and conductors a detailed analysis and comparison results of each phase, analysis of the impact of some factors that lead to the field surface, and comparies the distribution of the field intensity above ground by using several different arrangements of the transmission lines.更多还原