某小型轧钢厂原10KV总配电所改扩建方案设计.doc

 PAGE \* MERGEFORMAT I *****学院毕业设计（论文） 某小型轧钢厂原10KV总配电所改扩建方案设计 学 生： 学 号： 专 业： 班 级： 指导教师：  摘 要 本次设计以某小型轧钢厂总降压变电所为主要设计对象，设计介绍了总降压变电所一次部分，总降压变电所二次部分，分为主接线、短路电流计算、设备选择，继电保护设计和综合自动化设计等几个部分。主变压器采用SL系列SL7，该变压器具有低损耗，过载能力强，运行稳定等特点。高压开关柜采用KYN28-12系列开关柜，该产品具有多种方案编号可以选择，并且具有很高的安全性能和电气性能。 关键词：主接线 ，变压器 ，短路计算，继电保护 ABSTRACT  PAGE \* MERGEFORMAT I PAGE \* MERGEFORMAT I ABSTRACT This design take the 35kV small-scale steel rolling mill as the main design object, carries on to its total transformer substation changes the extension, This design introduced always falls presses a transformer substation part, always falls presses the transformer substation two parts, always falls presses the transformer substation high pressure power distribution network，divides primarily the wiring, the short-circuit current computation, the equipment choice, the relay protection design and the synthesis automation design and so on several parts.The main transformer uses SL series improveted model SL7series, this transformer has low loss, overload capacity, moves steadily and so on. The high-pressured switch cabinet uses the KYN28-12 series, this product has many kinds of plan serial number to be possible to choose, and the safety performance and the electrical specification are very high. Keywords: Mainwiring ，Power-transformer ，Short-circuit current computation，Relay-protection 目录 目录 目录  TOC \o 1-3 \h \z \u  HYPERLINK \l _Toc25050 摘 要  PAGEREF _Toc25050 I  HYPERLINK \l _Toc173 ABSTRACT  PAGEREF _Toc173 I PAGEREF _Toc173 I  HYPERLINK \l _Toc30700 第1章 引言  PAGEREF _Toc30700 1  HYPERLINK \l _Toc19124 第2章 电气主接线的设计  PAGEREF _Toc19124 2  HYPERLINK \l _Toc19904 2.1 原始资料  PAGEREF _Toc19904 2  HYPERLINK \l _Toc9124 2.1.1 工厂概况  PAGEREF _Toc9124 2  HYPERLINK \l _Toc20815 2.1.2 设计的基础资料  PAGEREF _Toc20815 2  HYPERLINK \l _Toc5371 2.2 原始资料分析  PAGEREF _Toc5371 3  HYPERLINK \l _Toc5092 2.3 电气主接线设计原