畢業(yè)論文 火力發(fā)電廠電氣部分設(shè)計

火力發(fā)電廠電氣部分設(shè)計

[摘要] 由發(fā)電、變電、輸電、配電和用電等環(huán)節(jié)組成的電能生產(chǎn)與消費系統(tǒng)。它的功能是將自然界的一次能源通過發(fā)電動力裝置轉(zhuǎn)化成電能，再經(jīng)輸、變電系統(tǒng)及配電系統(tǒng)將電能供應(yīng)到各負(fù)荷中心。
電氣主接線是發(fā)電廠、變電所電氣設(shè)計的首要部分，也是構(gòu)成電力系統(tǒng)的重要環(huán)節(jié)。主接線的確定對電力系統(tǒng)整體及發(fā)電廠、變電所本身的運(yùn)行的可靠性、靈活性和經(jīng)濟(jì)性密切相關(guān)。并且對電氣設(shè)備選擇、配電裝置配置、繼電保護(hù)和控制方式的擬定有較大的影響。電能的使用已經(jīng)滲透到社會、經(jīng)濟(jì)、生活的各個領(lǐng)域，而在我國電源結(jié)構(gòu)中火電設(shè)備容量占總裝機(jī)容量的75%。本文是對配有2臺50MW和2臺300MW汽輪發(fā)電機(jī)的大型火電廠一次部分的初步設(shè)計，主要完成了電氣主接線的設(shè)計。包括電氣主接線的形式的比較、選擇；主變壓器、啟動/備用變壓器和高壓廠用變壓器容量計算、臺數(shù)和型號的選擇；短路電流計算和高壓電氣設(shè)備的選擇與校驗; 并作了變壓器保護(hù)配置。
[關(guān)鍵詞] 發(fā)電廠；變壓器；電力系統(tǒng)；繼電保護(hù)；電氣設(shè)備      

The Design Of Steam power plant electrical part

Abstract: By the power generation, transformation, transmission and distribution of electricity and energy components, and other aspects of production and consumption systems. It is the function of the natural world through the power of primary energy into electrical energy power plant, then lost, transforming the system and distribution system will supply power to the load centers.
Electrical wiring is the main power plant, electric substation designed first and foremost part of the power system is also constitute an important part. Determination of the main cable on the power system as a whole and power plants, substations to run its reliability, flexibility and economy are closely related. And choice of electrical equipment, power distribution equipment configuration, relay protection and control of the means to develop a greater impact. The use of power has infiltrated the social, economic, in all areas of life, and in the power structure of China's thermal power equipment capacity of the total installed capacity of 75%. This article is equipped with 2*50 and 2*300MW turbo-generator of large-scale thermal power plants a part of the preliminary design of the main completed the main electrical wiring design. Including the electrical wiring of the main forms of comparison, the choice; main transformer, the start / stand-by transformer and the high-voltage transformer factory with the capacity of calculation, the number of models and options; short-circuit current calculation and high-voltage electrical equipment selection and validation; and made the protection of transformer .
Key words: power plant; transformer; power system; relay; electrical equipment.

 
目   錄
1  引 言 1
2  電氣主接線設(shè)計 2
2.1  原始資料 2
2.2  主接線方案的擬定 2
2.3  主接線方案的評定 3
2.4  發(fā)電機(jī)及變壓器的選擇 3
3  短路電流計算 6
3.1  概 述 6
3.2  系統(tǒng)電氣設(shè)備電抗標(biāo)幺值計算 6
3.3  短路電流計算 7
3.3.1  10.5kV側(cè)短路計算 7
3.3.2  220kV側(cè)短路計算 9
3.3.3  330kV側(cè)短路計算 12
4  電氣設(shè)備的選擇 16
4.1 斷路器的選擇 16
4.1.1  330kV側(cè)高壓斷路器的選擇 16
4.1.2  220kV側(cè)高壓斷路器的選擇 18
4.1.3  10.5kV側(cè)斷路器的選擇 20
4.2  隔離開關(guān)的選擇 23
4.2.1  330kv側(cè)隔離開關(guān)的選擇 23
4.2.2  220kV側(cè)隔離開關(guān)的選擇 25
4.2.3  10.5kV隔離開關(guān)的選擇 27
4.3  電流互感器的選擇 29
4.3.1  330kV側(cè)電流互感器的選擇 30
4.3.2  220kV側(cè)電流互感器的選擇 32
4.3.3  10.5kV側(cè)電流互感器的選擇 34
4.4  電壓感器的選擇 35
4.4.1  330kV側(cè)TV的選擇 36
4.4.2  220kV側(cè)TV的選擇 37
4.4.3  發(fā)電機(jī)TV的選擇 37
4.5  導(dǎo)體的選擇及校驗 38
4.5.1　330kV母線選擇 38
4.5.2  330kV連接線選擇 39
4.5.3  220kV母線選擇 40
4.5.4  220kV連接線選擇 41
4.5.5  10.5kV母線選擇 41
4.5.6  發(fā)電機(jī)端封閉母線的選擇 42
5  配電裝置規(guī)劃及布置 43
5.1  概  述 43
5.2  屋內(nèi)配電裝置 43
5.3  屋外配電裝置 44
5.4  發(fā)電機(jī)與配電裝置的連接 44
6  主系統(tǒng)保護(hù)配置整定 45
6.1 系統(tǒng)防雷保護(hù) 45
6.1.1  330kV側(cè)避雷器的選擇和校驗 46
6.1.2  220kV側(cè)避雷器的選擇和校驗 46
6.1.3  10.5kV側(cè)避雷器的選擇和校驗 47
6.2  變壓器繼電保護(hù)配置及整定 48
6.3  發(fā)電機(jī)繼電保護(hù)配置及整定 49
6.4  輸電線路保護(hù) 52
總  結(jié) 53
致  謝 54
參考文獻(xiàn) 55
外文翻譯 55
附錄Ⅰ 60
附錄Ⅱ 61