【正文】
摘要 Ⅰ 本科畢業(yè) 設(shè)計 景觀公園箱式變電站 摘 要 摘 要 :箱式變電站又稱戶外成套變電站,也有稱做組合式變電站,它是發(fā)展于 20世紀(jì) 60年代至 70年代歐美等西方發(fā)達(dá)國家推出的一種戶外成套變電所的新型變電設(shè)備,由于它具有組合靈活,便于運輸、遷移、安裝方便,施工周期短、運行費用低、無污染、免維護等優(yōu)點,受到世界各國電力工作者的重視。進入 20世紀(jì) 90 年代中期,國內(nèi)開始出現(xiàn)簡易箱式變電站,并得到了迅速發(fā)展。本課題的主要內(nèi)容包括箱式變電站的發(fā)展應(yīng)用,箱式變電站的結(jié)構(gòu)分類,以及箱式變電站一次系統(tǒng)設(shè)計及其設(shè)備選型,二次系統(tǒng)設(shè)計, 以及箱式變電站的智能監(jiān)控系統(tǒng)。 10kV 箱式變電站的設(shè)計高壓側(cè)額定電壓為 10kV,低壓側(cè)額定電壓為 。主接線采用單母線分段接線。 關(guān)鍵詞 :箱式變電站 結(jié)構(gòu) 一次系統(tǒng) 二次系統(tǒng) Abstract Boxtype transformer substation calls again outdoor a transformer substation, also call to do the sectional transformer substation. It is a development to wait to 7039。s Europe and America western prosper in the 6039。s of 20 centuries the nation release a kind of outdoor the set changes to give or get an electric shock of new change to give or get an electric shock the equipments, because it have the bination vivid, easy to conveyance, move, install convenience, start construction the period is short and circulate the expenses low, free from pollution, do not need maintenance etc. advantage, suffer the international munity electric power the worker values. Enter the middle of 9039。s of 20 centuries. The domestic starts appearing the simple boxtype transformer substation , and got the quick development. The article regard boxtype transformer substation as a development for relating boxtype transformer substation applied, the construction of boxtype transformer substation divides into sesection, emphasizing the treatise boxtype transformer substation a the very equipments in design in subsystem chooses the type, two subsystems design, and the intelligence of boxtype transformer substation supervises and control the system. The design high pressure side sum of boxtype transformer substation settles electric voltage as 10 摘要 Ⅰ kV, the lowpressure side sum settles electric voltage as . The lord connects the single mother in adoption in line cent segment connects the line. Keywords: boxtype transformer substation construction first system second system.目錄 II 目錄 摘 要 .................................................................... Ⅰ 1 緒論 .................................................................... 1 供配電技術(shù)的發(fā)展 .................................................. 1 箱式變電站的類型、結(jié)構(gòu)與技術(shù)特點 .................................. 1 箱式變電站的類型 ............................................ 1 箱式變電站的結(jié)構(gòu) ............................................ 1 箱式變電站與常規(guī)變電站的對比分析 ............................ 2 箱式變電站的技術(shù)要求與設(shè)計規(guī)范 .................................... 3 本設(shè)計的主要任務(wù) .................................................. 3 2 負(fù)荷計算和無功功率補償計算 ............................................. 3 負(fù)荷計算 .............................................................. 3 各用電車間及生活區(qū)負(fù)荷計算 .................................. 3 路燈負(fù)荷 .................................................. 3 照明負(fù)荷: ................................................ 4 消防水泵 .................................................. 4 噴霧器: .................................................. 4 供水站 .................................................... 5 瀑布: .................................................... 5 噴泉: .................................................... 5 無功功率補償 ...................................................... 6 補償方式選擇 ................................................ 6 同步補償機 ................................................ 6 同步補償機使用方式 ........................................ 6 并聯(lián)電抗器 ................................................ 7 補償方式的選擇 ............................................ 7 無功功率補償計算 ............................................ 7 3 變電站主變壓器臺數(shù)、容量、類型的選擇 ................................... 8 變壓器容量、接線組別的確定 ........................................ 8 變壓器的散熱處理 .................................................. 9 采用負(fù)荷開關(guān) — 熔斷器組合電器保護變壓器 ............................ 9 4 變電站主接線方案的選擇 ................................................. 11 目錄 III 箱式變電站對主接線的基本要求 ..................................... 11 主接線的接線方式 ................................................. 11 單母線接線 ................................................. 11 單母線分段接線 ............................................. 11 4, 單母分段帶旁路母線 ......................................... 12 橋型接線 ................................................... 12 電氣主接線的選擇 ................................................. 12 5 短路電流計算 .......................................................... 13 短路電流計算目的 ................................................. 13 短路電流計算方法:標(biāo)幺值法 ....................................... 14 短路電流計算圖 ................................................... 14 電力系統(tǒng)中各元件的標(biāo)幺值 ......................................... 14 實際短路計算 ..................................................... 15 第一點短路 ................................................. 15 電力變壓器的電抗標(biāo)幺值 ..................................... 15 電力線路的電抗標(biāo)幺值 ....................................... 16 總阻抗標(biāo)幺值 ............................................... 16 三相短路周期分量 ........................................... 16 高壓側(cè)沖擊電流 ............................................. 16 第二點短路 ................................................. 16 總阻抗標(biāo)幺值 ............................................... 17 三相短路電流周期分量 ....................................... 17 低壓側(cè)短路沖擊電流 ........................................ 17 6 一次設(shè)備的選擇與校驗 ................................................... 17 選擇設(shè)備的一般原則和基本要求 ..................................... 17 高壓斷路器的選擇 ................................................. 19 斷路器選擇的具體技術(shù)條件 ....................................... 19 斷路器選擇及校驗 ............................................... 19 隔離開關(guān)的選擇 ................................................... 21 隔離開關(guān)選擇的具體技術(shù)條件 ..................................... 21 隔離開關(guān)選擇計算 ............................................... 21 電流互感器的選擇 ......