【正文】 tion. Draw on the basis of main electrical wiring diagram, as a short circuit when you choose high and lowside short circuit of main transformer, calculation of short circuit current, so as the basis for selection and check the main electrical equipment. Main electrical equipment including circuit breakers, disconnections, fuse, current transformers, voltage transformers, bus, lightning arrester. Under normal operating conditions the rated current, rated voltage and model of the device, by short circuit case calibration device of thermal stability, stability and the breaking capacity of the switch. Major electrical equipment were selected on the basis of, you can draw out the final electrical wiring diagram, floor plan, lightning protection and grounding. Key Words: The Main Transformer, the Electricity Lord Connects the Line, the Shortcircuit Current, the Electrical Equipment 南京師范大學電氣與自動化工程學院 本科 畢業(yè)設計論文 目 錄 摘 要 ................................................................................................................ I ABSTRACT...................................................................................................... II 第 1 章 緒論 ...................................................................................................... 1 本課題的研究意義及目的 ............................................................................................ 1 本課題的國內外研究現(xiàn)狀 ............................................................................................ 1 本課題主要資料 ............................................................................................................ 2 本文所做的工作與論文結構 ........................................................................................ 2 第 2 章 電力負荷的分級和計算 ...................................................................... 3 負荷分級與供電要求 .................................................................................................... 3 負荷的定義 ................................................................................................................. 3 負荷分級 ..................................................................................................................... 3 電力負荷的計算 ............................................................................................................ 3 負荷計算的目的 .......................................................................................................... 3 負荷計算方法 .............................................................................................................. 4 第 3 章 電氣主接線和變壓器的選擇 ............................................................... 6 電氣主接線的選擇 ........................................................................................................ 6 電氣主接線的基本要求 ................................................................................................ 6 電氣主接線的形式 ....................................................................................................... 6 主接線方案的選擇 ....................................................................................................... 8 變壓器的選擇 ................................................................................................................ 9 變壓器類型的選擇 ....................................................................................................... 9 變壓器臺數(shù)的選擇 ....................................................................................................... 9 變壓器容量的選擇 ....................................................................................................... 9 第 4 章 短路電流計算 .....................................................................................11 短路電流計算的目的和意義 ...................................................................................... 11 短路點的確定和短路電流計算方法 .......................................................................... 11 最大運行方式下短路電流 .......................................................................................... 12 最小運行方式下短路電流 .......................................................................................... 14 第 5 章 電氣設備的選擇 ................................................................................ 17 南京師范大學電氣與自動化工程學院 本科 畢業(yè)設計論文 高壓斷路器的選擇 ...................................................................................................... 19 35kV 進線斷路器 ....................................................................................................... 19 6kV進線斷路器 ......................................................................................................... 20 6kV 出線斷路器 ......................................................................................................... 20 電流互感器的選擇 ...................................................................................................... 20 35kV 進線 電流互感器 ................................................................................................ 21 6kV 進線 電流互感器 .................................................................................................. 21 6kV 出線電流互感器 .................................................................................................. 22 電壓互感器的選擇 ...................................................................................................... 22 35kV 線路側電壓互感器 ............................................................................................. 23 6kV 線路側電壓互感器 ............................................................................................... 23 高壓熔斷器的選擇 ...................................................................................................... 23 接地開關的選擇 .......................................................................................................... 24 35kV 側接地開關 ....................................................................................................... 24 6kV 側接地開關