MC市11kV降压变电所电气一次部分设计毕业论文.doc

MC市110kV降压变电所电气一次部分设计 内容提要 本次设计为MC市110kV降压变电站电气一次部分的初步设计， 根据原始资料，以设计任务书和国家有关电力工程设计的规程、规范及规定为设计依据。变电站的设计在满足国家设计标准的基础上，尽量考虑当地的实际情况。在本变电站的设计中，包括对变电站总体分析和负荷分析、变电站主变压器的选择、电气主接线、电气设备选择、短路电流计算等部分的分析计算以及防雷设计。在保证供电可靠性的前提下，减少事故的发生，降低运行费用。 本次设计正文分设计说明书和设计计算书两个部分，设计说明书包括电气主接线设计、变压器选择说明、短路电流计算说明、电气设备选择说明、配电装置设计、电气总平面布置和防雷保护设计；设计计算书包括变压器选择、短路电流计算、电气设备选择及校验等，并附有电气主接线图及其它相关图纸。 关键词：110kV变电站；短路电流；一次部分；设备选择 Summary The design is a part of the MC city 110kV electrical substation and preliminary design，based on the original information to the design plan and the state regulations related to electrical engineering designs, specifications and requirements for the design basis，the design of the substation to meet national standards on the basis of consideration of the realities on the ground. In the design of the substation, including the right substation overall analysis and load analysis, the main transformer substation choice, the main electrical connection , short circuit current calculation as part of the analysis and mine design. Guarantee the reliability of electricity, under the premise of reducing the occurrence of accidents and reduce operating costs. The design specification and the body divides the two parts of the design calculations, design specifications, including an overview of the main electrical wiring design, transformer selection, short-circuit current calculations, and electrical equipment selection instructions, power distribution equipment design, electrical general layout and lightning protection design; design calculations including short circuit current calculation, electrical equipment selection and calibration, lightning protection estimates.the power supply to provide protection. Key words: 110kV substation；The first part of the electrical；Equipment Selection 目录 内容提要 Ⅰ Summary..................................................................................................Ⅱ 第一部分 设计说明书 1 原始资料 1 1.1 变电站的基本情况 1 1.2 设计任务 2 2 变压器选择 3 2.1 变压器绕组与调压方式的选择 3