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1、,第7章 输电线路和绕组中的波过程 Chapter 7 Wave-process of transmission lines and windings,在电力系统正常工作下，输电线路、母线、电缆以及变压器和电机的绕组等元件，由于其尺寸远小于50Hz交流电的波长，故可以按集中参数元件处理。 Under the normal condition of power systems, the components such as transmission lines, generatrix, cables, windings of transformers, etc can be considered
2、 as lumped-parameter elements because their sizes are far less than the wavelength of AC mode(50 Hz).,在过电压作用下，由于电压的等效频率很高，其波长小于或与系统元件长度相当，此时就必须按分布参数元件处理。 Under the effect of overvoltage, due to its high equivalent frequency, the wavelength is more or less equivalent to the length of system component
3、s. It must be handled as distributive parameter components here.,本章将重点介绍如何利用波的概念来研究分布参数回路的过渡过程，从而得出导线在冲击电压作用下电流压的变化规律，确定过电压的最大值。 This chapter will be focused on how to use the concepts of wave to study the transition process of distributed parameter loop. Thus the variation of current and voltage of
4、 the wire under the effect of impulse voltage can be drawn to figure out the maximum overvoltage.,7.1 均匀无损单导线上的波过程 7.1 Wave process on uniform & lossless single-line 7.2 行波的折射和反射 7.2 Refraction & reflection of traveling wave 7.3 波在多导线系统中的传播 7.3 Propagation of wave in multi-wire system 7.4 波在传播中的衰减与畸变 7.4 Attenuation and distortion wave propagation 7.5 绕组中的波过程 7.5 Wave process in windings 习题与思考题 Exercises & FAQs,本章内容 Contents in this section,
