某变电站电气二次部分设计_毕业设计 40;论文 41;.doc

河 南 工 业 职 业 技 术 学 院 Henan Polytechnic Institute 毕业设计（论文） 题 目：某变电站电气二次部分设计 班 级：　 电力1002班 姓 名：　 杨恩峰 ＿ 指导教师：　 邵 红 硕　  摘 要 随着经济高速发展，我国电网规模不断扩大，220kV变电站数量的不断增加，并且成为保障国内电力安全、平稳输送的重要部分。为了保证电网安全、稳定运行，需要以信息化推动生产自动化和管理现代化， Along with the rapid economic development, China power grid continues to expand the scale of 220 kV substation rising number of, and become the domestic power security of security, stability of the important part of transport. In order to ensure secure and stable operation of the grid, need to promote production information automation and management modernization, in 220 kV substation construction and operation management of substation integrated automation degree of demand increased, in this type of microcomputer relay protection device plays an important role and significance, the microcomputer relay protection device can type in substation failures to adopt effective treatment. Transformer substation of relay protection and the second circuit design is an important part of the substation design. The graduation design according to the original data and a part to provide the data and power supply system diagram 110 kV substations is a part for the corresponding relay protection design and the secondary circuit preliminary design. Content mainly includes the main transformer protection scheme design and setting calculation, the bus protection configuration and setting calculation, circuit breakers, isolating switch control and its operating circuit design, voltage transformer, current transformer configuration and wiring design, signal circuit design. Key words: relay protection device, the microcomputer type, the secondary circuit, transformer 1引言 电力事业的日益发展紧系着国计民生。它的发展水平和电气的程度，是衡量一个国家的国民经济发展水平及其社会现代化水平高低的一个重要标志。 党的十八大提出了全面完善建设小康社会的宏伟目标，从一定意义上讲，实现这个宏伟目标，需要强有力的电力支撑，需要安全可靠的电力供应，需要优质高效的电力服务。本毕业设计是在完成本专业所有课程后进行的综合能力考核。通过对主接线的选择及比较、负荷计算和主变压器的选择及短路电流的计算、主要电器设备的选择及校验、线路图的绘制以及避雷器针高度的选择等步骤、最终确定了220kV变电站所需的主要电器设备、主接线图以及变电站防雷保