畢業(yè)設(shè)計(jì)背靠背換流站的直流系統(tǒng)設(shè)計(jì).doc
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畢業(yè)設(shè)計(jì)背靠背換流站的直流系統(tǒng)設(shè)計(jì),中文摘要盡年來隨著電力電子器件的不斷發(fā)展高壓直流輸電技術(shù)也取得了巨大的成果,由于交流輸電的一些無法解決的問題,使得直流輸電技術(shù)在現(xiàn)實(shí)使用中越來越為廣泛。背靠背換流站作為高壓直流輸電技術(shù)中的一個(gè)重要組成部分,對電力系統(tǒng)之間的相互支援、調(diào)度等具有重要作用。目前,我國已經(jīng)建成天生橋、靈寶等換流站,在使用中體現(xiàn)出了巨大的優(yōu)越性...
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盡年來隨著電力電子器件的不斷發(fā)展高壓直流輸電技術(shù)也取得了巨大的成果,由于交流輸電的一些無法解決的問題,使得直流輸電技術(shù)在現(xiàn)實(shí)使用中越來越為廣泛。背靠背換流站作為高壓直流輸電技術(shù)中的一個(gè)重要組成部分,對電力系統(tǒng)之間的相互支援、調(diào)度等具有重要作用。目前,我國已經(jīng)建成天生橋、靈寶等換流站,在使用中體現(xiàn)出了巨大的優(yōu)越性。
本設(shè)計(jì)內(nèi)容為設(shè)計(jì)背靠背換流站的直流系統(tǒng),在查閱相關(guān)資料的基礎(chǔ)上,爭取采用國際先進(jìn)技術(shù),合理設(shè)計(jì)、縝密計(jì)算,力爭實(shí)現(xiàn)換流站直流系統(tǒng)的合理設(shè)計(jì)。
關(guān)鍵詞:換流站;換流變壓器;晶閘管;整流站;無功補(bǔ)償
Abstract: The completely year, with the development of the electric power electronic device, high pressure direct current transmission technology has also yielded the huge result. Because of some questions that alternating current transmission have can not solve, which causes the direct current transmission technology in the reality use more and more for widespread. Back to back the convertor station took in the high pressure direct current transmission technology is an important constituent, to between the electrical power system mutual support, the dispatch and so on has the vital role. At present, our country already completed inborn some convertor stations such tian sheng qiao ,ling bao and so on, which manifested the huge superiority in the use.
This design content for the design back to back convertor station direct current system, in the consult correlation data foundation, strives for uses the international vanguard technology, the reasonable design, the meticulous computation, argues vigorously the realization convertor station direct current system the reasonable design.
Key words:Convertor station;Trades changes the depressor;
Crystal thyratron;Converting station; Idle work compensation
目 錄
中英文摘要-------------------------------------------------------------------------------(1)
目 錄--------------------------------------------------------------------------------------(2)
前 言--------------------------------------------------------------------------------------(4)
第一章 資料綜述-------------------------------------------------------------------------(5)
1.1 課題意義-----------------------------------------------------------------------------(5)
1.2 本課題來源及研究內(nèi)容-------------------------------------------------------------(6)
第二章 基礎(chǔ)理論-------------------------------------------------------------------------(7)
2.1 高壓直流輸電最新技術(shù)--------------------------------------------------------------(7)
2.1.1 大容量晶閘管和智能化晶閘管觸發(fā)單元------------------------------------------(7)
2.1.2 容性換流技術(shù)----------------------------------------------------------------------(8)
2.1.3 連續(xù)可調(diào)式交流濾波器及有源式直流濾波器-----------------------------------(8)
2.1.4 數(shù)字式光纖互感器-----------------------------------------------------------------(8)
2.1.5 電壓控制型直流閥-----------------------------------------------------------------(9)
2.1.6 水冷卻及組件式閥結(jié)構(gòu)、吊裝式閥安裝-----------------------------------------(9)
2.1.7 戶外型閥設(shè)計(jì)---------------------------------------------------------------------(10)
2.1.8 合成試驗(yàn)回路---------------------------------------------------------------------(10)
2.2 高壓直流輸電基本原理-----------------------------------------------------------(11)
2.3 高壓直流輸電系統(tǒng)的過壓保護(hù)----------------------------------------------------(13)
2.3.1 過電壓的種類---------------------------------------------------------------------(13)
2.3.2 直流系統(tǒng)過電壓保護(hù)原則--------------------------------------------------------(15)
2.3.3 直流系統(tǒng)保護(hù)要求----------------------------------------------------------------(15)
2.3.4 直流系統(tǒng)保護(hù)功能的實(shí)現(xiàn)--------------------------------------------------------(16)
2.3.5 保護(hù)原理及配合------------------------------------------------------------------(16)
2.3.6 高壓直流輸電系統(tǒng)過電壓保護(hù)裝置——直流避雷器--------------------------(17)
2.4 高壓直流輸電系統(tǒng)的諧波分析--------------------------------------------------(19)
2.4.1 諧波的產(chǎn)生-----------------------------------------------------------------------(20)
2.4.2 諧波的治理----------------------------------------------------------------------(21)
2.5 高壓直流輸電系統(tǒng)的無功補(bǔ)償---------------------------------------------------(22)
2.5.1 換流器的無功功率特性---------------------------------------------------------(22)
2.5.2 高壓直流輸電中的無功功率補(bǔ)償----------------------------------------------(24)
第三章 背靠背換流站直流系統(tǒng)的設(shè)計(jì)-----------------------------------------------(26)
3.1 換流站的總體設(shè)計(jì)方案-----------------------------------------------------------(26)
3.1.1主電路的具體設(shè)計(jì)---------------------------------------------------------------(28)
3.1.2交流母線到換流閥部分的設(shè)計(jì)--------------------------------------------------(30)
3.2 換流站一次系統(tǒng)的設(shè)計(jì)------------------------------------------------------------(31)
3.2.1 系統(tǒng)主電路的確定---------------------------------------------------------------(31)
3.2.2 系統(tǒng)無功補(bǔ)償裝置的確定-------------------------------------------------------(31)
3.2.3 系統(tǒng)諧波分析與濾波器的確定-------------------------------------------------(33)
3.3 換流站調(diào)節(jié)控制系統(tǒng)的設(shè)計(jì)-------------------------------------------------------(34)
3.3.1 觸發(fā)器的硬件設(shè)計(jì)----------------------------------------------------------------(35)
3.3.2 觸發(fā)器的軟件設(shè)計(jì)----------------------------------------------------------------(37)
3.4 主要參數(shù)的計(jì)算及設(shè)備的選擇-----------------------------------------------------(39)
3.4.1 直流參數(shù)的計(jì)算-------------------------------------------------------------------(39)
3.4.2交流參數(shù)的計(jì)算--------------------------------------------------------------------(41)
第四章 其它部分------------------------------------------------------------------------(52)
致謝--------------------------------------------------------------------------------------(53)
參考資料--------------------------------------------------------------------------------(54)