6X200MW发电厂第一期工工程电气部分初步设计.doc

摘 要
本毕业设计论文是6×200MW发电厂第一期工程电气部分初步设计。 全论文除了摘要、毕业设计书之外，还详细的说明了各种设备选择的最基本的要求和原则依据。 变压器的选择包括：发电厂主变压器、高压备用变压器及高压厂用变压器的台数、容量、型号等主要技术数据的确定；电气主接线主要介绍了电气主接线的重要性、设计依据、基本要求、各种接线形式的优缺点以及主接线的比较选择，并制定了适合本厂要求的主接线； 厂用电接线包括：厂用电接线的总要求以及厂用母线接线设计。短路电流计算是最重要的环节，本论文详细的介绍了短路电流计算的目的、假定条件、一般规定、元件参数的计算、网络变换、以及各短路点的计算等知识； 高压电气设备的选择包括母线、高压断路器、隔离开关、电流互感器、电压互感器、高压开关柜的选择原则和要求，并对这些设备进行校验和产品相关介绍 。而根据本论文所介绍的高压配电装置的设计原则、要求和220KV的配电装置，决定此次设计对本厂采用分相中型布置。继电保护和自动装置的规划，包括总则、自动装置、一般规定和发电机、变压器、母线等设备的保护， 而发电厂和变电所的防雷保护则主要针对避雷针和避雷器的设计。此外，在论文适当的位置还附加了图纸（主接线、平面图、断面图等）及表格以方便阅读、理解和应用。
关键词 火力发电，厂电气设计，短路计算， 设备选择， 配电装置
Abstract
This graduate design this is a 6×200 MWses ：TongLiaopower plant the first period engineering electricity parts of first steps design. Whole thesis besides summary graduate to design the book outside, returned the expatiation every kind of most basic request that equipments choose with principle according to. The choice of the transformer includes:Main transformer, high pressure in power plant back transformer and high pressure factories use the main technique in number, capacity, model number...etc. in set data of the transformer to really settle;The electricity lord connected the line to introduce primarily the electricity lord connects the linear importance, design according to, the basic request, every kind of merit and shortcoming and lords that connect the line form connects the linear choosing more, the lord that combine to establish the in keeping with my plant the request connects the line; The factory connects with the electricity the line includes:The factory connect the linear total request and factory to connect the line design with the mother line with the short-circuit galvanometer is regarded as the most important link, this thesis introduced the calculating purpose in short-circuit electric current, assumption term, general provision, the calculation, network transformation of a parameter detailedly, and each ca