1、 毕业设计 （ 论文 ） 题 目 xxxxxxxx 发电厂电气一次 及变压器、母线保护设计 专 业 电气工程及其自动化（电力） 班 级 电力 082 学 生 指导教师 2012 年 xxx：xxxx 发电厂电气一次及变压器、母线保护设计 摘 要 本次毕业设计为 xx 第二发电厂电气一次及变压器、母线保护设计。内 容包括：电气主接线方案的拟定、比较和选择；短路电流的计算；主要电 气设备和导体的选择及校验；配电装置的设计；变压器、母线保护设计。 其中电气主接线设计是电力工程设计的重要环节，它表明发电厂内的发电 机、变压器、各电压等级的线路、各种电气设备之间的连接形式。它甚至 影响发电厂、变电站乃至
2、相关的电力系统的安全、经济、稳定、灵活的运 行。 在本次设计中,首先,对 xx 第二发电厂的原始资料进行分析,了解发电 厂概况,从而拟定初步的主接线方案, 经过技术、经济综合比较，选择出一 个最优方案作为本次设计的最终方案。并用该方案进行短路电流计算，根 据短路电流计算结果选择电气一次设备并对其进行校验。然后进行配电装 置设计。最后对变压器和母线进行保护设计并画出各保护的原理接线图和 展开图。 关键词：发电厂，电气一次设计，短路电流，电力系统，继电保护，电气 设备 The primary electrical design，the transformer and the bus bar pro
3、tection design of Baoji second power plant ABSTRACT This design is for the primary electrical parts ，the transformer and the bus bar protection design of Baoji second power plant , including the design ,comparison and selection of the main electrical connection, the calculation of the short-circuit
4、current, the selection and Calibration of the main electrical equipments and the conductor, the design of the distribution apparatus and the design of the transformer and the bus bar protection. Among them, the design of the main electrical connection is the core. It suggests the situation of the co
5、nnection among generator, transformer, lines of various voltage levels， various electrical equipments. It also affects the safe, economical, stable and flexible operation of power plant, transformer substation. In this design, firstly, the scheme of the main electrical connection is studied out afte
6、r the analysis of the original data and the acquaintance of power station. Second, passing through the technological and economic analysis, the best method is selected. At the same time, the short-circuit current is calculated by using it and primary electric equipment is selected and validated according to the former result. Then, the anti-thunder and grounding device is designed. Last, the transformer and the bus bar protection are designed and the sc
