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20xx畢業(yè)設(shè)計(jì)-甘肅大峽水電站繼電保護(hù)及二次回路設(shè)計(jì)(已修改)

2024-12-17 22:08 本頁(yè)面
 

【正文】 畢業(yè)設(shè)計(jì)(論文) 題 目: 甘肅大峽水電 站繼電保護(hù)及 二次回路設(shè)計(jì) 學(xué) 院: 電子信息學(xué)院 專業(yè)班級(jí): 電氣工程及其自動(dòng)化 06 級(jí) 1 班 指導(dǎo)教師: 職稱 : 講師 學(xué)生姓名: 學(xué) 號(hào): 40604040108 西安工程大學(xué)本科畢業(yè)設(shè)計(jì)(論文) I 摘 要 由于大型水電站的母線、發(fā)電機(jī)和變壓器的結(jié)構(gòu)比較復(fù)雜,在運(yùn)行過(guò)程中都可能會(huì)發(fā)生各種各樣的故障和異常運(yùn)行狀態(tài),為了確保在保護(hù)范圍內(nèi)發(fā)生故障,都能有選擇性的快速切除故障,需要配置多種繼電保護(hù)裝置,必要時(shí)進(jìn)行多重化配置,從而將水電站中重要設(shè)備的危害和損失降到最小,對(duì)電力系統(tǒng)的影響最小。 發(fā)電廠和變電所母線是電力系統(tǒng)中的中的一個(gè)重要組成部件,發(fā)電機(jī)的安全運(yùn)行對(duì)保證電力系統(tǒng)的正常工作和電能質(zhì)量起著決定性的作用;而變壓器是電力系統(tǒng)十分重要的供電元件 再者,發(fā)電機(jī)、變壓器本身就是十分貴重的電氣元件,所以,繼電保護(hù)裝置對(duì)大型水電站的正常運(yùn)行起著至關(guān)重要的作用。 根據(jù)大峽水電站的接線圖及相關(guān)資料。本設(shè)計(jì)共包括六章,分別對(duì)母線、發(fā)電機(jī)、變壓器的繼電保護(hù)進(jìn)行詳細(xì)介紹,并給出相關(guān)的整定計(jì)算,畫出部分二次接線圖。 本文主要通過(guò)分析原始資料中主要設(shè)備的參數(shù),首先,需要對(duì)電力系統(tǒng)保護(hù)原理進(jìn)行全面系統(tǒng)的復(fù)習(xí)、查閱相關(guān)資料,加深理解;其次,結(jié)合相關(guān)參數(shù)和各種繼電保護(hù)原理,確定適用于大峽水電站的保護(hù)方案,最后,分別對(duì)母線處、發(fā)電機(jī)和變壓器進(jìn)行整定計(jì)算和配置,并且根據(jù)系統(tǒng)一 次設(shè)計(jì)圖給出部分二次設(shè)計(jì)及其配置圖和一般原理圖。 關(guān)鍵詞 :水電站、繼電保護(hù)、發(fā)電機(jī)、變壓器、母線、二次回路 西安工程大學(xué)本科畢業(yè)設(shè)計(jì)(論文) II Abstract As a result of large hydroelectric station39。s bus bar, the generator and transformer39。s structure is quite plex, possibly will break down various in the movement process and exceptionally the running status, to guarantee that will break down in the extent of protection, can have the selective fast excision breakdown, needs to dispose many kinds of relay protection installments, when the necessity will carry on the multidensified disposition, thus in the river water power plant the important equipment39。s harm and the loss will fall to are smallest, will be smallest to electrical power system39。s influence. The power plant and the transformer substation bus bar is in an electrical power system39。s important building block, generator39。s safe operation to guaranteed that electrical power system39。s normal work and the electrical energy quality are playing the decisive role。 Furthermore but the transformer is the electrical power system very important power supply part, the generator, the transformer itself are the very precious electrical elements, therefore, relay protection installment to large hydroelectric station normal operation very important function. According to Daxia hydro power station wiring diagram and correlation data. This design altogether includes six chapters, to the bus bar, the generator, transformer39。s relay protection carries on separately introduced in detail, and gives the related installation putation, draws the partial secondary circuit chart. This article mainly through analysis firsthand information in major installation39。s parameter, first, needs to carry on the prehensive system39。s review, the consult correlation data to the electrical power system protection principle, deepens understanding。 Next, the union related parameter and each kind of relay protection principle, determined that is suitable in the big canyon hydroelectric power station protection plan, finally, separately to the bus bar place, the generator and the transformer carries on the installation putation and the disposition, and gives the part two designs and the disposition chart and the general schematic diagram according to a system design drawing. Key word: Hydroelectric power station, relay protection, generator, transformer, bus bar, secondary circuit 西安工程大學(xué)本科畢業(yè)設(shè)計(jì)(論文) III 目 錄 前 言 .............................................................. 1 第 1 章 電力系統(tǒng)繼電保護(hù)簡(jiǎn)論 ........................................ 3 繼電保護(hù)的作用 .............................................. 3 繼電保護(hù)的基本要求、原理、構(gòu)成與分類 ........................ 4 基本要求 .............................................. 4 基本原理 .............................................. 4 構(gòu)成 .................................................. 7 分類 .................................................. 8 第 2 章 主變壓器保護(hù)設(shè)計(jì) ............................................ 9 ............................................ 9 ............................ 9 變壓器保護(hù)配置原則 ......................................... 10 變壓器縱聯(lián)差動(dòng)保護(hù) ......................................... 12 構(gòu)成變壓器縱差動(dòng)保護(hù)的基本原則 ....................... 12 變壓器差動(dòng)保護(hù)的不平衡電流 ........................... 16 變壓器后備保護(hù) ............................................. 21 低電壓?jiǎn)?dòng)的過(guò)電流保護(hù) .............................. 21 ................................... 22 過(guò)負(fù)荷保護(hù) ........................................... 23 變壓器保護(hù)的整定計(jì)算 ....................................... 24 瓦斯保護(hù)的整定 ....................................... 24 變壓器縱差保護(hù)正定計(jì)算 ............................... 24 過(guò)電流保護(hù)整定計(jì)算 ................................... 27 低電壓?jiǎn)?dòng)的過(guò)電流保護(hù)整定計(jì)算 ....................... 27 第 3 章 發(fā)電機(jī)保護(hù)設(shè)計(jì) ............................................ 29 發(fā)電機(jī)故障及不正常運(yùn)行狀態(tài) ................................. 29 發(fā)電機(jī)故障類型 ....................................... 29 不正常運(yùn)行狀態(tài) ....................................... 29 西安工程大學(xué)本科畢業(yè)設(shè)計(jì)(論文) IV 發(fā)電機(jī)縱差保護(hù) ............................................. 31 工作原理 ............................................. 31 發(fā)電機(jī)縱差保護(hù)整定 ................................... 32 發(fā)電機(jī)橫差保護(hù) ............................................. 34 發(fā)電機(jī)定子繞組單相接地保護(hù) ................................. 36 發(fā)電機(jī)負(fù)序電流保護(hù) ......................................... 36 定時(shí)限過(guò)電流保護(hù) ..................................... 36 反時(shí)限負(fù)序過(guò)電流保護(hù) ................................. 38 發(fā)電機(jī)失磁保護(hù) ............................................. 39 勵(lì)磁回路一點(diǎn)接地保護(hù) ....................................... 39 復(fù)合電壓?jiǎn)?dòng)的過(guò)電流保護(hù) ................................... 40 發(fā)電 機(jī)保護(hù)的整定計(jì)算 ....................................... 41 BCH2 型繼電器構(gòu)成的差動(dòng)保護(hù) ........................ 41 橫聯(lián)差動(dòng)保護(hù)整定計(jì)算 ................................. 43 復(fù)合電壓?jiǎn)?dòng)的過(guò)電流保護(hù) ............................. 43 第 4 章 母線保護(hù) .................................................. 45 ..........................
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