【正文】 Ⅱ 35kV 箱式變電站設(shè)計(jì) 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(yùn)輸、遷移、安裝方便，施工周期短、運(yùn)行費(fèi)用低、無污染、免維護(hù)等優(yōu)點(diǎn)，受到世界各國電力工作者的重視。進(jìn)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(jì)極其設(shè)備選型，二次系統(tǒng)設(shè)計(jì)，以及箱式變電站的智 能監(jiān)控系統(tǒng)。 35kV 箱式變電站的設(shè)計(jì)高壓側(cè)額定電壓為 35kV，低壓側(cè)額定電壓為 10kV，主變壓器容量為 5000kVA。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) Design of 35 kV boxtype transformer substations 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 Ⅱ 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 35 kvass, the lowpressure side sum settles electric voltage as 10 kvass, main transformer capacity is 5000 kvetched 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 35kV 箱式變電站設(shè)計(jì) .................................. Ⅰ Design of 35 kV boxtype transformer substations ............ Ⅱ 第 1 章 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(diǎn) ............................ 1 箱式變電站的類型 .............................................................................. 2 箱式變電站的結(jié)構(gòu) .............................................................................. 2 箱式變電站的技術(shù)特點(diǎn) ...................................................................... 3 箱式變電站與常規(guī)變電站的對(duì)比分析 .............................................. 5 箱式變電站的技術(shù)要求與設(shè)計(jì)規(guī)范 .............................. 6 額定值 .................................................................................................. 6 設(shè)計(jì)和結(jié)構(gòu) .......................................................................................... 7 使用條件 .............................................................................................. 7 箱體要求 .............................................................................................. 8 箱式變電站內(nèi)部電器設(shè)備 .................................................................. 8 本課題的主要任務(wù) ............................................ 9 第 2 章 35kV 箱式變電站的總體結(jié)構(gòu)設(shè)計(jì) ..................... 10 電氣主接線的確定 ........................................... 10 主接線的基本形式 ............................................................................ 10 箱式變電站對(duì)主接線的基本要求 .................................................... 10 主接線的比 較與選擇 .........................................................................11 高壓接線方式 .................................................................................... 12 箱式變電站箱體的確定 ....................................... 12 箱體結(jié)構(gòu)的確定 ................................................................................ 12 合理配置 ............................................................................................ 12 變壓器 ..................................................... 13 變壓器容量、接線組別的確定 ........................................................ 13 變壓器的散熱處理 ............................................................................ 14 采用負(fù)荷開關(guān) — 熔斷器組合電器保護(hù)變壓器 ................................ 15 箱式變電站總體布置 ......................................... 16 第 3 章 35KV 箱式變電站一次系統(tǒng)設(shè)計(jì) ...................... 17 35kV 箱式變電站一次系統(tǒng)設(shè)計(jì) ................................. 17 概述 .................................................................................................. 17 一次系統(tǒng)設(shè)計(jì)原則 ............................................................................ 17 一次系統(tǒng)設(shè)計(jì) .................................................................................... 18 箱式變電站設(shè)備選型應(yīng)注意的方面 ............................. 18 第 4 章 35KV 箱式變電站二 次系統(tǒng)設(shè)計(jì) ...................... 19 電氣二次系統(tǒng)設(shè)計(jì) ........................................... 19 二次系統(tǒng)的定義及分類 .................................................................... 19 電氣測(cè)量儀表及測(cè)量回路 ................................................................ 19 二次系統(tǒng)設(shè)計(jì) .................................................................................... 19 二次系統(tǒng)總體方案 ........................................... 21 斷路器控制與信號(hào)回路 ....................................... 21 概述 ..................................................................................................... 21 控制回路設(shè)計(jì) .................................................................................... 21 信號(hào)回路設(shè)計(jì) .................................................................................... 22 電氣測(cè)量與信號(hào)系統(tǒng) ......................................... 23 第 5 章短路電流的計(jì)算 ................................ 24 5． 1 計(jì)算的目的和內(nèi)容 ......................................... 24 5． 2 計(jì)算的假設(shè)條件 ..........................