三相变压器已整理.docVIP

摘 要 三相变压器是电力系统中输配电力的主要设备，在电力系统中，三相变压器的总安装容量为发电机安装容量的6～8倍。近年来，随着能源的日趋紧张，对变压器这一重要用电设备进行节能设计越来越受到人们的重视。此设计主要从节能的角度来设计三相变压器。 对变压器进行节能设计的原则就是满足性能指标条件下，降低变压器的损耗及有效材料成本。在具体设计过程中，往往需要反复调整和计算，因为降低损耗和降低材料成本在某种条件下又是相互矛盾的，反复调整和计算的过程就是使得全局优化的过程。节能变压器与普通变压器设计的程序相同，但在参数选择方面偏重点不同，如电流密度和磁通密度的选取都比普通变压器低一些。这些在具体设计过程中将作详细介绍。 关键词: 三相变压器；损耗 ；节能；电流密度 ；磁通密度； Abstract Three-phase transformer is the main equipment to transit and distribute power in the electricity system. The total installed capacity of the three-phase transformer is 6~8 times as much as that of the generator in the electricity system. In recent years, with the energy tensing increasingly, people paid more and more attention to this important power consuming equipment the energy. This text designed the three-phase transformer in terms of energy-conservation mainly The energy-conservation designing principle of three-phase transformer required that the loss of the transformer and the cost of the effective material were reduced with the performance indexes met. In the course of the concrete design, adjusting and calculating are needed repeatly,because it is contradictory for each other to reduce various loss and the material costs under a certain condition.so, the course of adjusting and calculating repeatly is the course of making the overall situation optimization. The design procedure of energy-conservation transformer and ordinary transformer is the same,and they are different in the choose of parameter, for example the electric current density and magnetism flux density choose a little lower than the ordinary voltage transformer. These will make detailed introduction in the course of design concretely. Keyword: Three-phaser transformer; Loss ; Energy-conservation; Electric current density ; Magnetism flux density; 目录1 概 述 1 1.1 变压器设计计算的任务 1 1.2 变压器设计的步骤 2 2 变压器电磁计算 3 2.1 电压计算 3 2.2 电流计算 3 2.3 铁心直径估算 4 2.4 变压器容量的折算 5 2.5 铁心柱和铁轭截面设计 5 2.6 线圈匝数计算 6 2.7 电压比校核 7 3 线圈设计 9 3.1 线圈结构型式的确定 10 3.2 导线与电流密