节能三相变压器设计.doc

摘 要 电力变压器是电力系统中输配电力的主要设备，在电力系统中，电力变压器的总安装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: 电力变压器；损耗；节能；电流密度；磁通密度 Abstract Power transformer is the capital equipment of electricity to fail in the power system . Install 6-8 times of the capacity for the generator in always installation amount of power transformer in the power system. In recent years, one that is with energy is tense day by day, people paid attention to more and more to this important power consuming equipment of voltage transformer the energy-conservation design. This design designs the three-phase transformer in terms of energy-conservation mainly. The energy-conservation design principle of power transformer is to meet performance indexes, and under the terms, the loss of the power transformer and effective material cost are reduced. In the course of design concretely, adjusting and calculating are needed repeat , because it is contradictory each other under a certain condition to reduce vorious loss and the material cost, the course adjusting and calculating repeat is the course of making the overall situation optimization. Energy-conservation voltage transformer and ordinary procedure that voltage transformer design the same, choose respect is that order differently to lay particular stress on parameter, if 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 designing concretely. Keyword: Power 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 变压器设计计算的步骤 2 2 变压器电压和电流计算 3 2.1 电压计算 3 2.2 电流计算 3 3 铁心直径估算及线圈匝数计算 5 3.1 铁心直径估算 5 3.2 变压器容量的折算 6 3.3 铁心柱和铁轭截面设计 6 3.4 线圈匝数计算 7 3.5 电压比校核 8 4