某企業(yè)110kV變電站的電氣部分和防雷接地系統(tǒng)設(shè)計

摘 要
根據(jù)設(shè)計任務(wù)書的要求，本次設(shè)計為某企業(yè)110kV變電站的電氣部分和防雷接地系統(tǒng)設(shè)計，并繪制電氣主接線圖及相關(guān)工程設(shè)計圖紙若干。該變電站設(shè)有兩臺主變壓器，站內(nèi)主接線分為110kV和10kV 兩個電壓等級。各電壓等級分別采用內(nèi)橋接線和單母線分段接線。
在本次設(shè)計中，進行了負(fù)荷計算和無功補償、主接線設(shè)計及變壓器選擇、短路電流與短路容量計算、高壓電氣設(shè)備選擇及校驗（包括高壓斷路器、隔離開關(guān)、互感器、熔斷器、母線等）以及防雷接地系統(tǒng)設(shè)計。
本設(shè)計以《35~110kV變電所設(shè)計規(guī)范》、《供配電系統(tǒng)設(shè)計規(guī)范》、《3~110kV高壓配電裝置設(shè)計規(guī)范》和《建筑物防雷設(shè)計規(guī)范》等規(guī)范規(guī)程為依據(jù)，設(shè)計的內(nèi)容符合國家有關(guān)經(jīng)濟技術(shù)政策，所選設(shè)備全部為國家推薦的新型產(chǎn)品，技術(shù)先進、運行可靠、經(jīng)濟合理。

關(guān)鍵詞  110kV變電站，電氣部分，防雷接地系統(tǒng)
             

Abstract
From the guide of engineering design assignment, we have to design the electric part of 110kV substation for one enterprise and its lightning protection system, and draw main electrical connection diagram and a number of related engineering drawings. There are two main-transformers in this substation which main electrical connection can be divided into two voltage grades: 110kV and 10kV. It deposits inner bridge connection and sectionalized single bus bar scheme per. voltage grade.
The whole design includes load calculation and reactive power compensation, design, comparison and selection of main electrical connection and main-transformers, calculation for short-circuit current and capacity, selection and calibration of electrical devices (including circuit breaker, isolator, current transformer, potential transformer, fuses, bus-bar etc.). And a design for lightning protection and its grounding system is also included.
This design is mainly based on The Design Code for 35~110kV Substation, The Design Code for Power Supply System, The Design for 3~110kV High-voltage Distribution Equipment, The Design Code for Lightning Protection and other standard procedures. So its contents as follows conform to the relevant economic and technical policies, and all the selected equipments the state recommends are new products, which comply with the requirement of advanced technology, reliable operation and reasonable economy.

Key Words 110kV substation, electric part, lightning protection system

 
 
目錄

目錄 1
一 任務(wù)內(nèi)容及設(shè)計分析 1
1.1 內(nèi)容概要 1
1.2 任務(wù)書資料 1
1.3任務(wù)書內(nèi)容與要求 2
1.4設(shè)計初步分析 2
1.5企業(yè)平面布置圖 4
1.6企業(yè)選擇變電站位置 4
二 負(fù)荷計算及主接線 5
2.1電力負(fù)荷 5
2.2 本企業(yè)負(fù)荷計算 5
2.3 主接線的設(shè)計原則 6
2.4 主接線的基本要求 7
2.5 主接線的設(shè)計步驟 9
2.6本企業(yè)變電站主接線設(shè)計 9
三 短路電流計算 13
3.1短路電流計算的目的 13
3.2 短路計算的一般規(guī)定 13
3.3 短路電流計算步驟 14
3.4 本企業(yè)短路電流計算結(jié)果 14
四 一次設(shè)備的選擇與校驗 19
4.1 主變壓器及站用變壓器的選用 19
4.2 高壓設(shè)備的選擇與校驗 21
4.3 高壓斷路器的選擇與校驗 24
4.4 隔離開關(guān)的選擇與校驗 27
4.5 互感器的選擇與校驗 28
4.6 高壓熔斷器的選擇與校驗 29
五 防雷接地系統(tǒng)設(shè)計 31
5.1 變電站與線路的防雷介紹 31
5.2避雷針的設(shè)置和保護 32
5.3 接地 34
5.4 本企業(yè)變電站的防雷保護與接地保護 34
謝辭 37
參考文獻 38
附錄 1 外文翻譯 39
1.1 英文部分 39
1.2 譯文 45
附錄2 工程設(shè)計圖紙 50
2.1 主接線 50
2.2 防雷圖 50
2.3 平面圖 50
2.4 剖面圖 50