城北變電所繼電保護(hù)方案畢業(yè)方案

1、沈陽工程學(xué)院畢業(yè)設(shè)計(jì)（論文）I城北變電所繼電保護(hù)設(shè)計(jì)城北變電所繼電保護(hù)設(shè)計(jì)摘要本文對城北變電所可能會出現(xiàn)的故障、進(jìn)行了保護(hù)及安裝配置。對二次變電站的變壓器可能出現(xiàn)各種類型的故障和不正常運(yùn)行狀態(tài)進(jìn)行了分析。對主接線進(jìn)行選擇。并按照GB14258—1993《繼電保護(hù)和安全自動(dòng)化裝置技術(shù)規(guī)程》的規(guī)定為變壓器裝設(shè)瓦斯保護(hù)、差動(dòng)保護(hù)、過電流保護(hù)和過負(fù)荷保護(hù)裝置，提高了變壓器安全運(yùn)行。變電所中線路可能會出現(xiàn)相間短路，接地故障、過電流，根據(jù)規(guī)程配置了

2、電流保護(hù)、電流速斷保護(hù)、過電流保護(hù)及絕緣監(jiān)察裝置。針對變電站母線可能會出現(xiàn)單相接地和相間短路故障，根據(jù)母線電壓等級的不同，對10kV母線采用了雙母線固定連接的母線差動(dòng)保護(hù)。以上保護(hù)安裝構(gòu)成變電所的繼電保護(hù)系統(tǒng)，保證城北變電所的安全運(yùn)行及供電質(zhì)量。為運(yùn)行設(shè)備和運(yùn)行人員的安全提供保障。關(guān)鍵詞差動(dòng)保護(hù)，過電流保護(hù)，過負(fù)荷保護(hù)，電流速斷保護(hù)沈陽工程學(xué)院畢業(yè)設(shè)計(jì)（論文）目錄摘要...................................

3、............................IAbstract..........................................................................................................................II第一章說明書.....................................................

4、...........................................................11引言................................................................................................................12城北新建變電所簡要介紹................................

5、.................................................23運(yùn)行方式分析.....................................................................................................23.1最大運(yùn)行方式....................................................

6、......................................23.2最小運(yùn)行方式..........................................................................................23.3正常運(yùn)行方式........................................................................

7、..................23.4雙電源供電的運(yùn)行方式..........................................................................34主接線選擇........................................................................................................34.

8、1單母線接線..............................................................................................34.2單母線分段接線......................................................................................34.3帶旁路母線的單母線接線........

9、..............................................................44.4單母線分段帶旁路的接線.....................................................................44.5雙母線接線.................................................................

10、............................44.632接線.................................................................................................44.7橋形接線...............................................................................

11、...................54.8變電所主接線方案確定..........................................................................55選定繼電保護(hù)方案.............................................................................................66變壓器保護(hù)...

12、......................................................................................................76.1變壓器的保護(hù)配置方案..........................................................................76.2變壓器保護(hù)裝設(shè)原則.................

13、.............................................................76.3變壓器的縱聯(lián)差動(dòng)保護(hù)..........................................................................86.4變壓器瓦斯保護(hù)............................................................

14、........................116.5變壓器的過電流保護(hù)............................................................................136.6變壓器的過負(fù)荷保護(hù)............................................................................147線路的保護(hù)配置方案....

15、...................................................................................157.1中性點(diǎn)不接地電網(wǎng)故障的現(xiàn)象............................................................157.2單回線路的電流速斷保護(hù)...........................................

16、.........................167.3線路保護(hù)原理........................................................................................177.4單回線縱聯(lián)差動(dòng)保護(hù)............................................................................217.5縱

17、聯(lián)差動(dòng)保護(hù)的整定與靈敏度校驗(yàn)....................................................22第二章計(jì)算書..............................................................................................................241參數(shù)計(jì)算.............................

18、..............................................................................241.1等值等值電路圖（標(biāo)么值）及短路故障點(diǎn)的選擇............................241.2電氣主要設(shè)備參數(shù)...........................................................................

19、.....241.3標(biāo)么值歸算............................................................................................252正常方式運(yùn)行下短路電流計(jì)算.......................................................................262.1DQFI斷開，DQF2閉合........