小型水电厂电气一次部分初步设计.docx

摘 要 近年来，随着人们环保意识的增强，作为再生能源的水电在电力系统中发挥着越来越重要的作用。本次毕业设计通过模拟一高压侧110KV，两回出线；中压侧35KV，四回出线的发电厂进行模拟，对水电厂的电气主接线的设计、主变压器的选择、短路电流计算、主要电气设备的选择、配电装置的设置、防雷保护的设计、厂用电的设计，初步完成了该水电厂的一次部分设计。 近年本次毕业设计分为三个部分： 第一部分是设计说明书，主要内容为设计的原始资料分析、电气主接线的设计、主变压器的选择、短路电流计算的说明、主要电气设备的选择说明、配电装置的设计、防雷保护设计和厂用电设计。 第二部分是设计计算书，主要内容包括短路电流计算、主要电气设备的选择、防雷保护设计。 第三部分是设计图纸，包括电气主接线图、电气平面布置图与开关站断面图。 关键词：水电厂；电气；一次设计 Abstract In?recent?years,?with?the?enhancement?of?peoples?awareness?of?environmental?protection,?as?a?renewable?energy,?hydropower?is?playing?an?increasingly?important?role?in?the?power?system.?The?graduation?design?through?the?simulation?of?a?high?voltage?side?110KV,?two?back?line;?The?medium?voltage?side?35kV,?four?return?line?power?plant?simulation,?the?main?electrical?wiring?of?the?hydropower?plant?design,?the?selection?of?the?main?transformer,?short-circuit?current?calculation,?the?selection?of?the?main?electrical?equipment,?distribution?device?setting,?lightning?protection?design,?plant?power?design,?preliminary?completed?the?first?part?of?the?design?of?the?hydropower?plant. This graduation project is divided into three parts: The first part is the design specification, the main content is the original data analysis of the design, the design of the main electrical wiring, the selection of the main transformer, the description of the short-circuit current calculation, the selection of the main electrical equipment, the design of the distribution device, the design of lightning protection and the design of the plant power supply. The second part is the design calculation, the main content includes short-circuit current calculation, the choice of the main electrical equipment, lightning protection design. The third part is the design drawings, including the main electrical wiring diagram, electrical layout diagram and switching station section diagram. Key words: Hydroelectric power plant; Electric; Once part of design 目录 摘要.............................................................................