2015届业设计格式.doc

摘 要 本毕业设计是进行××发电厂电气部分设计。电气部分设计的主要目的是满足电厂经济、安全、高效的运行。论文主要内容有：确定发电厂电气主接线的最佳方案与主变压器的台数、容量、型式；确定厂用电的电压等级和选择厂用电接线方式，并统计和计算厂用负荷，选择厂用变压器；按照短路电流计算的目的、假定条件、一般规定、元件参数的计算等规定，分析了××发电厂的运行方式，选择了计算短路点，并按照可能发生最大短路电流的正常接线方式进行短路电流计算；对发电厂电气主设备包括断路器、隔离开关、互感器、避雷器、熔断器等进行选择，并按短路条件验算其动稳定和热稳定；完成了高压配电装置的设计；绘制了电气主接线图、厂用电接线图、开关站的平面图和断面图等相关图纸；并附加了相关计算公式、图表对设计成果加以说明。 关键词：电气主接线，短路电流计算，设备选型，厂用电 ABSTRACT This graduation design is the design of electrical part of ×× power plant project phase two (2 × 330MW ).The main purpose of the electrical part of the design is to meet the power plant economic,safe and efficient operation.The main contents are: to determine the best solution of the power plant main electrical wiring and the main transformer station number, capacity, type;Determine the voltage level of the auxiliary power and choice of auxiliary power wiring,and statistics and calculation of plant load,select the auxiliary transformer;In accordance with the purposes of the calculation of short circuit current，the assumptions,the general rule, and the device parameters calculation and so on,analysis the operation mode of the ×× Power plant,select short-circuit point for calculating,and calculate short-circuit current in accordance with the normal wiring way likely to occur a maximum short-circuit current；Select the main electrical equipment for power plant , like Breakers、isolation switches、transformers、surge arresters、fuses and so on，press the short-circuit conditions for checking the dynamic stability and thermal stability;Completed the design of high voltage electrical installations；Draw the diagrams of main electrical wiring、the diagram of auxiliary power wiring、a the floor plan and sectional diagrams of the switching station and other associated drawings,and attach the relevant formulas, and charts to illustrate the design results. Keywords:the main electrical wiring,the calculation of short circuit current, the selection of equipment, auxiliary power wiring 目 录 目 录 III 前 言 V 第1章 电气主接线设计 1 1.