110kv变电站电气部分设计毕业设计论文.doc

PAGE 4 PAGE I 河南理工大学万方科技学院本科毕业论文 摘 要 随着国民经济的迅速发展，我国电力需求迅速增长,使得电网规模不断扩大、结构越来越复杂，而变电站对于电力的生产和分配起到了举足轻重的作用。 变电站是电网建设和电网改造中非常重要技术环节。近年来，变电站技术处于高速发展的过程中，随着国内外气体绝缘金属封闭开关设备（GIS）系统和综合自动化技术的应用，变电站向着占地面积小、灵活性高、易于检修的趋势发展。 本次设计为110kV 变电站电气部分初步设计，并绘制电气主接线图及其他图纸。该变电站设有两台主变压器，站内主接线分为110kV、10kV两个电压等级。本次设计中进行了电气主接线的设计、短路电流计算、变压器的选择、主要电气设备选择（包括断路器、隔离开关、电流互感器、电压互感器、母线等）、各电压等级配电装置设计。 关键词：变电站 电气主接线 短路电流 Abstract With the rapid development of the national economy, Chinas rapid growth in electricity demand. Make power grids structure have been expanding more and more complex substations for electric power production and distribution play an increasingly important role. Substation is very important technical aspect of a power grid construction and transformation of electrical networks. In recent years, the technology of substation is in the process of rapid development， with domestic and international gas-insulated metal-enclosed switching equipment systems and integrated automation technology(GIS) applications, the city substation in a small footprint, flexible, easy to overhaul the trend of development. We have to design primary power-system of 110kV substation and draw main electrical one-line diagram and others. There are two main transformer in the substation ,in which main electrical connection can be divided into two voltage grades: 110kV, 10kV.There is also a design for main electrical connection in this engineering, the calculation for short-circuit electric current, the selection of electrical device and calibration (including circuit breaker, isolator, current transformer, potential transformer, bus bar etc.) and the design for distribution installation per. voltage grade. Key words: substation main electrical connection short circuit currents 目录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc232538030 1 前言 PAGEREF _Toc232538030 \h 1 HYPERLINK \l _Toc232538031 1.1 选题的目的和意义 PAGEREF _Toc232538031 \h 1 HYPERLINK \l _Toc232538032 1.2 国内外研究综述 PAGEREF _Toc232538032 \h 1 HYPER