大型發(fā)電廠的繼電保護(hù)配置

電子機(jī)電論文編號(hào):JD088    包括 開題報(bào)告,任務(wù)書,大圖,字?jǐn)?shù):37030,頁數(shù):80

目 錄
摘  要 .......................................................I
Abstract....................................................... II
前言....................................................... 1
第一章  大型機(jī)組、母線的繼電保護(hù)配置....................... 3
1.1 大型發(fā)電機(jī)、變壓器的保護(hù)配置概述....................... 3
1.1.1 大型發(fā)電機(jī)組的特點(diǎn)及對(duì)繼電保護(hù)的要求....................... 3
1.1.2 大型發(fā)電機(jī)的故障、異常運(yùn)行方式及其保護(hù)方式 .......................4
1.1.3 大型變壓器的故障、異常運(yùn)行方式及其保護(hù)方式....................... 5
1.2 大型發(fā)電機(jī)-變壓器組的特點(diǎn)及其繼電保護(hù)配置 .......................7
1.2.1 大型發(fā)電機(jī)-變壓器組的特點(diǎn) .......................7
1.2.2 大型發(fā)電機(jī)-變壓器組繼電保護(hù)的特點(diǎn) .......................9
1.2.3 大型發(fā)電機(jī)-變壓器組的繼電保護(hù)配置原則....................... 11
1.2.4 大型發(fā)電機(jī)-變壓器組繼電保護(hù)總體配置情況....................... 12
1.3 母線保護(hù)的配置.............................................. 13
1.3.1 母線保護(hù)的一般配置原則 ..............................................14
1.3.2 高壓主接線的母線保護(hù)配置 ..............................................14
第二章  廠用電系統(tǒng)保護(hù)的配置原則....................... 22
2.1 廠用電系統(tǒng)概述.............................................. 22
2.2 廠用電系統(tǒng)保護(hù)的配置原則 ..............................................22
2.2.1 高壓廠用工作、備用（起動(dòng)）變壓器的保護(hù)配置....................... 22
2.2.2 低壓廠用工作和備用變壓器的保護(hù)配置 .......................24
2.2.3 廠用工作及備用電抗器的保護(hù)配置 .......................25
2.2.4 3～10kV高壓廠用電動(dòng)機(jī)保護(hù)的配置 .......................26
2.2.5 380kV低壓廠用電動(dòng)機(jī)的保護(hù)配置 .......................27
2.2.6 備用電源自動(dòng)投入裝置 .......................28
第三章 廠用電系統(tǒng)保護(hù)的整定配合 .......................32
3.1 廠用電系統(tǒng)保護(hù)的整定計(jì)算原則....................... 32
3.1.1 縱聯(lián)差動(dòng)保護(hù) ..............................................32
3.1.2 電流速斷保護(hù).............................................. 34
3.1.3 過電流保護(hù) ..............................................34
3.1.4 單相接地零序電流保護(hù).............................................. 36
3.2 低壓廠用電系統(tǒng)保護(hù)的配合問題 ..............................................38
3.2.1 概述.............................................. 38
3.2.2 保護(hù)的配合.............................................. 39
3.2.3 選擇性校驗(yàn)..............................................  42
3.2.4 配合的要求 .............................................. 43
第四章實(shí)際廠用電系統(tǒng)保護(hù)配置設(shè)計(jì) ............................... 45
4.1 廠用電系統(tǒng)接線的特征描述.....................................  45
4.2 廠用電系統(tǒng)保護(hù)設(shè)計(jì) ................................... 47
4.2.1 3號(hào)高廠變 .......................................... 47
4.2.2 6kV廠用工作母線 ............................. 49
4.2.3 低壓廠用變壓器...............................  50
4.2.4 400V PC母線所接開關(guān) .......................... 53
結(jié)論..............................................  56
致謝...............................................  58
參考文獻(xiàn)...........................................  59
附錄..............................................  61
附錄2..............................................  66
附錄3..............................................  72

摘  要
隨著電力工業(yè)的迅速發(fā)展，我國發(fā)電機(jī)、變壓器單機(jī)容量不斷增大，電力系統(tǒng)正朝著“大機(jī)組、超高壓、大電網(wǎng)”的方向發(fā)展。現(xiàn)今我國大容量發(fā)電廠不斷增多，它們?cè)陔娏ο到y(tǒng)中地位更顯重要。為保證整個(gè)電力系統(tǒng)的安全經(jīng)濟(jì)運(yùn)行，我們應(yīng)對(duì)電廠配置可靠性、靈敏性、選擇性和速動(dòng)性都很好的保護(hù)裝置。為實(shí)現(xiàn)配置方案的優(yōu)化，還應(yīng)充分考慮到大型發(fā)電廠的特點(diǎn)。
本設(shè)計(jì)主要對(duì)大型發(fā)電廠的繼電保護(hù)配置方案進(jìn)行了研究。首先，對(duì)大容量機(jī)組的特點(diǎn)及其保護(hù)配置的基本原則進(jìn)行了闡述。接著，敘述了大型發(fā)電廠中母線保護(hù)的配置原則，并提出了提高母線保護(hù)性能的一些措施。由于當(dāng)前電廠廠用電系統(tǒng)繼電保護(hù)的整定計(jì)算無規(guī)程、導(dǎo)則可用，本設(shè)計(jì)結(jié)合以往的一些工程實(shí)踐和電廠廠用電設(shè)計(jì)規(guī)定，對(duì)廠用電系統(tǒng)保護(hù)的配置和整定原則進(jìn)行了整理，并著重研究了低壓廠用電系統(tǒng)保護(hù)的有關(guān)配合問題。最后，本設(shè)計(jì)根據(jù)廠用電系統(tǒng)的保護(hù)配置原則，針對(duì)一個(gè)實(shí)際廠用電系統(tǒng)進(jìn)行了保護(hù)配置方案的設(shè)計(jì)，包括高廠變、6kV工作段母線、低壓廠用變壓器以及PC母線所接開關(guān)。

關(guān)鍵詞   繼電保護(hù)  發(fā)電機(jī)變壓器組  母線  廠用電系統(tǒng)
Abstract
Along with the quick development of electric power industry, the single machine capacity of the generator, transformer in our country continuously enlarges and the electric power system is developing toward the direction of "large generating set, extra high voltage, large power grid ". The big capacity power plant in our country continuously increases at present, they are playing a more important role in the electric power system. To ensure the whole electric power system operating safely and economically, we should collocate the power plant the protection devices which with more good credibility, intelligent, selectivity and speed. To make the scheme achieve optimization, we should also well in consideration of the characteristics of large power plant.
This design mainly researches on the protection scheme in large power plant. First, the article elaborates the characteristics of the large capacity generating set and the basic principle of its protection allocation. Then it describes the principle of the bus bar protection allocation in large power plant, and introduces some measures to raise the property of the bus bar protection. Because the protection of station service system at present has no regulations and leads to use, thirdly, this text combines a little bit former engineering fulfillment and the design provisions of station service system, summarizing the principles of protection allocation and setting in station service system, and emphatically discussing the points which are relevant to the protection matching in low- voltage station service system. In the end, according to the principle of the station service system protection allocation, this paper designs a protection scheme to a real station service system.

Keywords        relay protection   generator transformer unit   bus bar 
station service system protection