【作者】 田树军；

【导师】 王巨丰；

【作者基本信息】 广西大学 ， 电力系统及其自动化， 2004， 硕士

【摘要】 本论文介绍了高效防雷变压器的机理，用基于Matlab的状态方程模块的仿真模型法计算了其在雷电波作用下的暂态过程，计算值与实测值相接近。 本论文主要内容由三部分构成。第一部分是进行雷电波的频谱特性的分析，为开发基于雷电频谱特性的新型防雷产品的提供参考。 第二部分是自己制作一个单相及三相高效防雷变压器模型。针对一台单相高效防雷变压器模型，通过实验找到了求取附加绕组参数的方法；测量其相应的矩阵参数，在前人研究的基础上，建立其数学模型—状态方程，用贝瑞隆法、直接求解微分方程组法、基于Matlab语言的状态方程模块的仿真模型法分别计算了高频正弦波电压函数和矩形波电压函数作用于它时的暂态过程，并与实测值吻合较好。其中第三种方法比较简单可靠。最后用第三种方法仿真了标准雷电波电压作用于它时的暂态过程。针对一台三相高效防雷变压器模型，用实验证明了附加绕组回路的作用。 第三部分是向变压器厂订制一台三相高效防雷变压器，在其生产的过程中配合厂方测量并计算其相应的参数。然后应用基于Matlab语言的状态方程模块的仿真模型法，计算出雷电波电压函数作用于它时的暂态过程。更多还原

【Abstract】 This paper introduced the mechanics of High Efficient Lightning-protection Transformer (HELPT). It also computed the transient of the HELPT on which imposed by lightning waveform by the method of simulation model based on state-space block of the language of Matlab. It’s computed results conform to the measured waveforms verywell.This paper is mainly made up of three parts. The first is to analyse the frequency spectrum of some lightning waveforms. It gives references to develop new lightning-protection products based on the frequency spectrum of lightning waveform.The second is to make a single-phase HELPT model and a three-phase HELPT model. Based on the single-phase HELPT model, it is found out that how to get the adjustable capacity and resistance associated the additional coil by experiment.I measure its matrix parameters and set up a mathematical model-state equation based on the predecessors of the field.Its transient of high frequence sine and impulse waveforms is computed by three methods. These are Bergeron’s method, the method of directly solving differential equations and the method ofsimulation model based on state-space block of the language of Matlab .Its results conform to the measured waveforms very well. Above of all, the third method is simpleist and best reliable. At last its transient of standard lightning waveform is simulated by the third method. The three phase HELP model is made and the role of the circuit of additional coil is proved by experiment.The third is to custom a three-phase HELPT in a transformer factory .In the process of its producing, I get the related parameters cooperated with the worker of that factory. Its transient of a lightning waveform is simulated by the method of simulation model based on state-space block.更多还原