【正文】 . . 龍灣二次 60/10KV降壓變電所繼電保護(hù)部分初步設(shè)計(jì) The relaying design for electrical part of Longwan60KV step down substation （該論文為畢業(yè)論文，比課程設(shè)計(jì)復(fù)雜，同時(shí)論文結(jié)構(gòu)和內(nèi)容與課程設(shè)計(jì)內(nèi)容差異很大。參考時(shí)留意異同。）. . 摘 要 電力系統(tǒng)專(zhuān)業(yè)的畢業(yè)設(shè)計(jì)是一次比較綜合的訓(xùn)練，它是我們將在校期間所學(xué)的專(zhuān)業(yè)知識(shí)進(jìn)行理論與實(shí)踐的很好結(jié)合，運(yùn)用理論知識(shí)和所學(xué)到的專(zhuān)業(yè)技能進(jìn)行工程設(shè)計(jì)和科學(xué)研究，提高分析問(wèn)題和解決問(wèn) 題的能力。在完成此設(shè)計(jì)過(guò)程中，我們可以學(xué)習(xí)電力工程設(shè)計(jì)、技術(shù)問(wèn)題研究的程序和方法，獲得搜集資料、查閱文獻(xiàn)、調(diào)查研究、方案比較、設(shè)計(jì)制圖等多方面訓(xùn)練，并進(jìn)一步補(bǔ)充新知識(shí)和技能。本畢業(yè)設(shè)計(jì)論文是 60/10KV 二次降壓變電所電氣部分初步設(shè)計(jì)。為了保證供電的可靠性和一次性滿足遠(yuǎn)期負(fù)荷的要求，按照遠(yuǎn)期負(fù)荷規(guī)劃進(jìn)行設(shè)計(jì)建設(shè)，從而保證變電所能夠長(zhǎng)期可靠供電。 根據(jù)畢業(yè)設(shè)計(jì)任務(wù)書(shū)的要求，綜合所學(xué)專(zhuān)業(yè)知識(shí)及《變電所設(shè)計(jì)》等書(shū)籍的有關(guān)內(nèi)容，設(shè)計(jì)過(guò)程中完成了主變選擇、電氣主接線的擬定、短路計(jì)算、保護(hù)整定計(jì)算、配電裝置的規(guī)劃、繼電 保護(hù)和自動(dòng)裝置的規(guī)劃等主要工作。在此期間，遇到的種種問(wèn)題均通過(guò)反復(fù)比較、驗(yàn)算，并請(qǐng)教老師得以解決。畢業(yè)設(shè)計(jì)論文由設(shè)計(jì)說(shuō)明書(shū)、設(shè)計(jì)計(jì)算書(shū)、一套圖紙（電氣主接線圖、保護(hù)配置圖、保護(hù)展開(kāi)圖）組成。內(nèi)容較為詳細(xì)，對(duì)今后擴(kuò)建有一定的參考價(jià)值。 近年來(lái)，電力在世界各國(guó)能源和經(jīng)濟(jì)發(fā)展中的作用日益增長(zhǎng)，它已成為現(xiàn)代社會(huì)實(shí)用最廣、需要最快的能源。變電所的合理設(shè)計(jì)與建設(shè)是一個(gè)極其重要的組成部分。本次設(shè)計(jì)是根據(jù)畢業(yè)設(shè)計(jì)任務(wù)書(shū)的要求，綜合所學(xué)專(zhuān)業(yè)知識(shí)及《變電所設(shè)計(jì)》等書(shū)籍的有關(guān)內(nèi)容，在指導(dǎo)老師的幫助下，通過(guò)本人的精心設(shè)計(jì)論證完成的 。整個(gè)設(shè)計(jì)過(guò)程中，全面細(xì)致的考慮工程設(shè)計(jì)的可靠性、經(jīng)濟(jì)性、靈活性等諸多因素，最終完成本設(shè)計(jì)方案。通過(guò)完成此畢業(yè)設(shè)計(jì)論文，進(jìn)一步領(lǐng)會(huì)我國(guó)電力工業(yè)建設(shè)的政策觀念和經(jīng)濟(jì)觀點(diǎn)，培養(yǎng)對(duì)工程技術(shù)、經(jīng)濟(jì)進(jìn)行較全面的綜合分析能力。 關(guān)鍵詞 變電所 , 短路計(jì)算，繼電保護(hù)，保護(hù)配置 . . Abstract The professional graduate in system in electric power design is once more synthesize of training, it is we will during the period of school a profession for learning knowledge proceed theories and practice very good bination, make use of the theories knowledge proceeds with a profession for learning technical ability engineering design with science study, increase analyze problem with problemsolving ability. In plete this design process, we can study the electric power engineering the design, investigative procedure in problem in technique with method, be collected information, checked the cultural heritage, investigate the research, project parison and design the various training in etc. in graphics, bine further plement the new information knows with technical ability. This graduate design thesis is a 60/10 KV a declining to press to change to give or get an electric shock an electricity parts of first steps design. For the sake of dependable that guarantee the power supply with a request that contented longterm burthen, carries according to the forward the programming proceeding design developments, from but guarantee to change to give or get an electric shock can longterm dependable power supply. Design the request of the mission book according to the graduate, synthesize a programming for learning profession knowledge and 《 changing giving or get an electric shock the 》 designed waiting dog39。s ear relevantly contents, designing in the process pleting lord changing choice, electricity lord connecting linear draw up, short circuit puting, electricity equipments choosing, going together with electricity equipping, after give or get an electric shock the protection with the programming of the automatic device with defend protective programming in thunder etc. main work. Here period, all kinds problems that meet all passes to pare, check to calculate again and again, and ask the can solution in teacher. Graduate to design the thesis from design the manual, design calculation book, a set of diagrams paper( the electricity lord connects the line diagram, total flat surface arranges the diagram and go together with electricity equip cross section diagram, defend thunder protection diagram) constitute. The contents is more detailed, to from now on extend to consults certainly value. For this year, electric power is in international munity energy with economy develop of the function increases increasingly, it have bee modern the society is practical the most widely and need the quickest energy. Change the reasonable design that give or get an electric shock are a with developments very constituting the part importantly. This design is at guiding teacher descend, passing oneself of design what argument plete with meticulous care. Whole design process inside, pletely dependable, economic, vivid...etc. many factors that meticulous consideration engineering design, end plete this . . design project. Pass to plete this graduate design the thesis, further appreciating the our country the policy idea of electric power industry developments with the economic standpoint, educates to proceed to the engineering technique, economy more pletely to synthesize the analytical skill. Key words substation ,short circuit puting ,relaying ,Protect an allocation . . 目 錄 摘 要 ........................................................................................................................................... I ABSTRACT ....................................................................................................................................II 引 言 .......................................................................................................................................... 1 第一篇 說(shuō)明書(shū) ............................................................................................................................ 2 第一章 主變壓器的選擇 ............................................................................................................ 2 第二章 電氣主接線的選擇 ........................................................................................................ 5 主接線的設(shè)計(jì)原則及基本要求 .......................................... 5 本變電所主接線的選擇 ................................................ 6 第三章 短路電流的計(jì)算說(shuō)明 .................................................................................................... 9 短路電流計(jì)算的目的 .................................................. 9 短路的基本類(lèi)型 ...................................................... 9 短路電流計(jì)算的基本假定 .............................................. 9 一般規(guī)定 ............................................................ 9 計(jì)算步驟 ........................................................... 10 計(jì)算方法 ....................................