線路保護(hù)和重合閘最佳配合的理論和方法研究

電氣自動(dòng)化論文編號(hào):ZD297  論文字?jǐn)?shù):20644,頁(yè)數(shù):41

目     錄

第一章  引言 1
1．1課題研究意義 1
1．2課題研究背景 2
1．3研究的基本內(nèi)容和擬定解決的主要問(wèn)題 5
1.4 研究方法及措施 6
第二章  線路保護(hù)與重合閘最佳配合的現(xiàn)狀分析 9
2．1線路保護(hù)與重合閘最佳配合的現(xiàn)有方法分析 9
2.2  重合閘加速總結(jié) 11
第三章  線路保護(hù)和重合閘最佳配合研究 13
3．1關(guān)于重合閘時(shí)限設(shè)定問(wèn)題 13
3．2最佳重合閘 18
3．3短路電流斷開(kāi)時(shí)零點(diǎn)選擇 21
3．4同期合閘 32
3．5自適應(yīng)重合閘 33
3．6分相重合閘 35
第四章  總結(jié) 37
4．1線路保護(hù)和重合閘配合研究總結(jié) 37
4．2對(duì)未來(lái)配合保護(hù)的展望 37
參考文獻(xiàn) 38

摘要

 本次設(shè)計(jì)是對(duì)線路保護(hù)和重合閘最佳配合的理論和方法的研究。論文運(yùn)用多種方法來(lái)改進(jìn)線路保護(hù)和重合閘之間的配合：通過(guò)查詢各類資料和數(shù)據(jù)已證實(shí)縮短重合閘時(shí)限是可以實(shí)現(xiàn)的；同時(shí)，本文根據(jù)等面積定則原理計(jì)算得到最佳重合閘時(shí)間，保證系統(tǒng)穩(wěn)定；在傳統(tǒng)重合閘基礎(chǔ)上，深入分析自適應(yīng)重合閘技術(shù)，利用電壓判據(jù)來(lái)區(qū)分故障的性質(zhì)，在重合之前判斷故障是否瞬時(shí)性質(zhì)，再?zèng)Q定合閘信號(hào)的發(fā)送與否；關(guān)于分閘時(shí)間選擇方面則采用傅立葉算法將直流和交流分量分離，實(shí)現(xiàn)短路零點(diǎn)的預(yù)測(cè)，若將這個(gè)算法和計(jì)算機(jī)的高速計(jì)算能力結(jié)合則將能達(dá)到短路小電流的分閘，保證電力系統(tǒng)的穩(wěn)定。
關(guān)鍵詞：重合閘時(shí)限，短路電流零點(diǎn)預(yù)測(cè)，自適應(yīng)重合閘，最佳重合閘

Abstract

 This design is and switches on the optimum matching again to the line protection the theory and the method research. Between paper utilization many kinds of methods improve the line protection and switch on again the coordination: Through inquires each kind of material and the data confirmed that reduces switches on the time limit is achievable again; At the same time, this article according to the constant area rule principle computation to obtain best switches on the time again, the guarantee system is stable; In the tradition switches on again the foundation, analyzes auto-adapted thoroughly switches on the technology again, differentiates the breakdown using the voltage criterion the nature, before superposition did the diagnosis whether instant nature, decide that again switches on the signal the transmission or not; About will divide the floodgate time selection aspect to use the Fourier algorithm to direct current and the AC component separation, will realize a short circuit zero predict that if will be able to achieve this algorithm and computer's high speed computing power union the short circuit undercurrent a minute floodgate, guarantee electrical power system's stability.
 
  key word: Switches on the time limit again, a short-circuit current zero predict that switches on again auto-adapted, switches on again best