110kV降压变电站设计.doc

段明慧：姜寨110kV降压变电站设计 PAGE 4 110kV降压变电站设计 摘要 姜寨110kV变电站是新建的地区变电站，对乡镇生活和工业有着举足轻重的关系。 本设计书主要阐述了姜寨 110kV 变电所各设计阶段的设计依据、原则和方法，各方案的拟订、比较以及设计选择的结论。本设计主要是电气一次部分设计。 电气一次部分主要内容包括：变电所总体分析负荷分析与主变压器选择，电气主接线设计，短路电流计算，电气设备选择，配电装置与电气总平面设计以及防雷保护等。 本变电所设计为毕业设计。其目的是通过设计实践，综合运用所学知识，理论联系实际，锻炼独立分析和解决问题的能力，为未来的工作奠定坚实的基础。 关键词 变电站，变压器，电气主接线 Abstract JiangZhai 110kV substation is the new district substation it has been a crucial factor on the life and industrial. This design mainly explains the design principle, methods in each stage in the design of 110kV JiangZhai substation. Different plans are considered and compared so that the best has been chosen. The design is about the design of the primary part of electric; The part of electric mainly including: Substation general analysis, load analysis and the selection of main transformer. The selection of main electric wiring. Short-circuit current calculation. The selection of electrical equipment. Power distribution devices and design of electric general plane. The measures to prevent thunder stroke. The purpose of this design is to give us a chance of synthetical usage of the knowledge we have learned. Besides, it can train our ability to analyze and solve practical problems in power system in dependently so that the theory is connected with practice and a solid base is made in favor of future work. Key-words Substation, Transformer, Electrical main connection 目录 TOC \o 1-2 \h \z \u HYPERLINK \l _Toc295114744 摘要 PAGEREF _Toc295114744 \h I HYPERLINK \l _Toc295114745 Abstract PAGEREF _Toc295114745 \h I HYPERLINK \l _Toc295114746 1 绪论 PAGEREF _Toc295114746 \h 1 HYPERLINK \l _Toc295114747 2 变电所总体分析与负荷分析 PAGEREF _Toc295114747 \h 3 HYPERLINK \l _Toc295114748 2.1 变电所总体分析 PAGEREF _Toc295114748 \h 3 HYPERLINK \l _Toc295114749 2.2 变电所负荷分析计算 PAGEREF _Toc295114749 \h 5 HYPERLINK \l _Toc295114750 3 主变压器的选择 PAGEREF _Toc295114750 \h 9 HYPERLINK \l _Toc295114751 3.1 主变台数选择 PAGEREF _Toc295114751 \h 9 HYPERLINK \l _Toc295114752 3.2 主变容