2018年高考衡水中学物理研讨会课件 图文.ppt

2018年高考衡水中学物理研讨会课件_图文.ppt摘要
本毕业设计论文是对6200MW火力发电厂电气部分进行初步设计。
论文共分说明书、计算书两大部分,详细的说明了各种设备选择的最基本的要求和原则依据以及计算过程。其中第一部分分九章,有设计任务书,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。厂用电接线,包括:厂用电接线的总要求、厂用母线接线设计。短路电流计算,是最重要的环节,本书详细的介绍了短路电流计算的目的、条件、一般规定、元件参数的计算、网络变换等知识。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、限流电抗器的选择原则和要求。并简单的介绍了高压配电装置的设计原则、要求和220KV的配电装置。及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。第九章,发电厂和变电所的防雷保护,包括选择的基本原则、避雷针和避雷器的设计。
第二部分为计算书,分别是对主变压器及厂用变压器进行计算选择。进行短路电流计算,算出所选各短路点的短路电流。对高压电器的选择以及进行效验。防雷保护计算,根据变电所面积计算出避雷针针高。此外,为了方便读者对内容的理解和应用,在适当的位置附加了图纸(主接线、平面图、断面图、防雷保护等)。
关键词:电力系统母线高压断路器
Abstract
This paper is the designation to 6*200MW----- thermal power plant electricity part.
The paper is divided into two major part the manual and calculation books, expatiation every kind of most basic request of equipments choose with principle basis and the process of calculation. Among them the first part divides nine chapters. choice for transformer, including: the definition of the main technique in number, capacity, model number…etc. of main transformer, high voltage reserved transformer and high voltage factories in Power plant. electricity lord connecting line, primarily introducing the importance of electricity lord connecting linear, basic request of designing, basic request, the advantages and fault of every kind of connecting line form and choice of lords connect. the factory connects the line with the electricity, including: the total request of the electric boundary used by plant, bus designing in plant. a calculation on short current is the most important part.
There are detailed introduction on purpose requirement general provision calculation on parameter transformation work etc. choice of high voltage electrical equipment, including the principle of choice and requirement of bus high voltage circuit breaker isolation switch current transformer voltage transformer current limited reactor. But a designed principle requirement and 220