水電站電氣一次及發電機保護

電子機電論文編號:JD053  附開題報告,外文翻譯,文獻綜述,設計圖紙  字數:16510,頁數:66 

目 錄
前言 ......................................................................1
第一章電氣主接線設計...................................................... 2
1.1 設計原則............................................................... 2
1.2 各方案比較............................................................ .3
第二章廠用電設計.......................................................... 8
2.1 廠用電設計原則 .........................................................8
第三章短路電流計算 ........................................................9
3.1 對稱短路電流計算....................................................... 9
3.2 非對稱短路電流計算 ....................................................19
第四章電器主設備選擇 .....................................................30
4.1對方案I的各主設備選擇.................................................. 30
4.2 對方案Ⅱ的各主設備選擇 ................................................44
第五章發電機繼電保護原理設計及保護原理 ...................................46
5.1 初步分析.............................................................. 46
5.2 對F1 的保護整定計算 ...................................................47
5.3 對F5的保護整定計算.................................................... 50
第六章計算機監控系統方案論證選擇 .........................................54
6.1 系統功能 ..............................................................54
6.2 監控對象 ..............................................................56
6.3 系統結構 ..............................................................56
小  結 ....................................................................58
致  謝.................................................................... 59
參考文獻 ..................................................................60
附錄Ⅰ ...................................................................62
附錄Ⅱ ...................................................................63

摘  要

    本論文主要對直崗拉卡水電站進行電氣一次及發電機繼電保護設計。直崗拉卡水電站的總裝機功率為5×45=225MW,共四回110kv出線與系統相連。
電氣一次部分,首先是根據所給出的原始資料擬定五種電氣主接線方案.然后對這五種方案進行可靠性、靈活性和經濟性比較后，保留兩種較合理的方案，對這兩種方案進行短路電流計算；接著是根據短路電流計算結果進行主要電氣設備的選型以及校驗，包括斷路器、隔離開關、母線、絕緣子等；最后再由經濟性比較確定最終的電氣主接線方案。
發電機繼電保護的設計是對5臺發電機進行保護保護類型的配置，保護的整定計算及校驗，繼電器的選型。論文還附有5張AutoCAD的圖紙加以說明。包括電氣主接線圖、室外配電裝置圖、發電機保護的原理接線圖、展開圖、保護屏的布置及端子排接線圖。
畢業設計的過程是一次將理論與實際相結合的過程,通過這次比較系統全面的進行設計之后，鞏固和增強了電力系統學科主干課程的理解，樹立了工程設計的觀念，提高了電力系統設計的能力。

關鍵詞：電氣主接線，短路電流計算，設備選型，繼電保護

The electric design and generator protection of Zhi Gang La Ka hydro-electric power

Abstract

    The dissertation mainly designs the primary system and the generator ralay protection of Zhi Gang La Ka hydro-electric power.. The total power of Zhi Gang La Ka hydro-electric power is 5×45MW=225MW,connecting to system with 4 outline.
    For electric primary system, firstly draw up 5 drafts of main connection lines according to the firsthand information and datum. Then compare the 5 drafts from these aspects such as reliability, flexibility and economy, and keep two more reasonable plans than others. The short circuit current calculation is carried on.. And main electric equipments including circuit breakers、disconnectors、bus、insulator etc are choosed according to the result of short circuit current calculation. Finally the economy of these two plans are compared and main electrical connection plan is determined.
Generator relay protection contains choosing the protection style of the 5 generator, setting calculation as well as the verification and confirm relay style. The dissertation attach to five AutoCAD drawings including the main electric connection, outdoor distribution equipment setting, the relay protection of generator, the decoration of protection scream.
The process of the graduation design is a process of combining the theory with practice. The comprehensive and system training is helpful to enhance and consolidate the understanding and application of the branch curriculum of the electric subject, to set up the project idea and to improve the ability of the electrical system design.

KEY WORDS: Main electrical connection, short circuit current calculation, Equipment selection, Generator relay protection