【正文】 ................................................... 45 點(diǎn) 短路電流計(jì)算 ............................................................................................................. 46 網(wǎng)絡(luò)化簡 ...................................................................................................................... 46 短路電流計(jì)算 ............................................................................................................... 47 短路電流計(jì)算結(jié)果 ....................................................................................................... 49 3 設(shè)備的選擇計(jì)算 ....................................................................................................................... 50 斷路器的選擇 ..................................................................................................................... 50 220 kV 側(cè)斷路器的選擇 ............................................................................................... 50 60kV 側(cè)斷路器的選擇 .................................................................................................. 52 隔離開關(guān)選擇 ..................................................................................................................... 54 220kV 側(cè)隔離開關(guān)的選擇 ............................................................................................ 54 60kV 側(cè)隔離開關(guān)選擇 .................................................................................................. 56 電壓互感器選擇 ................................................................................................................. 57 電流互感器的選擇 ............................................................................................................. 58 220 kV 側(cè)電流互感器選擇 ........................................................................................... 58 60kV 側(cè)電流互感器 選擇 .............................................................................................. 60 母線的選擇 ......................................................................................................................... 62 220 kV 側(cè)母線的選擇 ................................................................................................... 62 60 kV 側(cè)母線的選擇 ..................................................................................................... 63 避雷器的選擇 ..................................................................................................................... 64 4 避雷針的保護(hù)范圍計(jì)算 ........................................................................................................... 65 避雷針的定位及針距 ......................................................................................................... 65 單根避雷針的保護(hù)半徑計(jì)算 ............................................................................................. 65 220kV 側(cè)針高 30 米時(shí) .................................................................................................. 65 60kV 側(cè)針高 30 米時(shí) .................................................................................................... 66 多根等高避雷針的保護(hù)范圍計(jì)算 ..................................................................................... 66 220kV 側(cè)針高 30 米時(shí) .................................................................................................. 66 60kV 側(cè)針高 30 米時(shí) ................................................................................................. 67 結(jié)論 ............................................................................................................................................... 70 致謝 ............................................................................................................................................... 71 參考文獻(xiàn) ....................................................................................................................................... 72 附錄 ............................................................................................................................................... 73 沈陽工程學(xué)院畢業(yè)設(shè)計(jì) 設(shè)備選擇一覽表 ................................................................................................................. 73 設(shè)計(jì)相關(guān)圖 ......................................................................................................................... 74 湯屯 一次降壓變電所電氣部分初步設(shè)計(jì) 1 引言 本畢業(yè)設(shè)計(jì)論文為 湯屯 220kV 降壓變電所電氣部分初步設(shè)計(jì)，要求所設(shè)計(jì)的變電所能夠保證供電的可靠性和一次性滿足遠(yuǎn)期負(fù)荷的要求，本設(shè)計(jì)將按照遠(yuǎn)期負(fù)荷規(guī)劃進(jìn)行設(shè)計(jì)。 The electricity lord connected the line to introduce primarily the electricity lord connects the linear importance, design according to, the basic request, every kind of merit and shorting and lords that connect the line form connects the linear choosing more, the lord that bine to establish the in keeping with my plant the request connects the line。圖紙部分包括 電氣主接線圖、總平面布置圖、配電裝置斷面圖。 變壓器的選擇包括：主變壓器的臺(tái)數(shù)、容量、型號(hào)等主要技術(shù)數(shù)據(jù)的確定；電氣主接線主要介紹了電氣主接線的重要性、設(shè)計(jì)依據(jù)、基本要求、各種接線形式的優(yōu)缺點(diǎn)以及主接線的比較選擇，并制定了適合本廠要求的主接線；短路電流計(jì)算是最重要的環(huán)節(jié)，本論文詳細(xì)的介紹了短路電流計(jì)算的目的、假定條件、一般規(guī)定、元件參數(shù)的計(jì)算、以及各短路點(diǎn)的計(jì)算等知識(shí)；高壓電氣設(shè)備的選擇包括母線、高壓斷路器、隔 離開關(guān)、電流互感器、電壓互感器的選擇原則和要求。湯屯 一次降壓變電所電氣部分初步設(shè)計(jì) I 摘要 本畢業(yè)設(shè)計(jì)論文是 湯屯降壓 變電所電氣部分初步設(shè)計(jì)。全論文除了摘要、畢業(yè)設(shè)計(jì)書之外，還詳細(xì)的說明了各種設(shè)備選擇的最基本的要求和原則依據(jù)。 計(jì)算書部分包括了計(jì)算變電所的最大負(fù)荷容量，計(jì)算主變壓器的容量，化簡短路阻抗和計(jì)算短路電流，電氣設(shè)備的校驗(yàn)，防雷保護(hù)保護(hù)范圍的計(jì)算 。 關(guān)鍵 詞 變電所，電氣工程，設(shè)計(jì) 沈陽工程學(xué)院畢業(yè)設(shè)計(jì) II Abstract This graduate design thesis makes the first design of a 220/60kV stop down substation in Tang tu. Whole thesis besides summary graduate to design the book outside, returned the expatiation every kind of most basic request that equipments choose with principle according to. The choice of the transformer includes: Main transformer use the main technique in number, capacity, model number...etc. in set data of the transformer to really settle。 The shortcircuit galvanometer is regarded as the most important link, this thesis introduced the calculating purpose in shortcircuit electric current, assumption term, general provision, the calculation, each calculation etc. kn