工廠10kV變電所一次系統(tǒng)的設(shè)計(jì)

電氣工程論文編號(hào):DQ246   論文字?jǐn)?shù):9736,頁(yè)數(shù):32

目  錄

摘  要 II
Abstract III
1  前 言 1
2  設(shè)計(jì)原始資料 2
 2.1 設(shè)計(jì)依據(jù) 2
 2.2 氣象及地質(zhì)資料 3
 2.3 當(dāng)?shù)仉姌I(yè)部門(mén)提供的技術(shù)資料 3
 2.4 供用電協(xié)議 4
3  負(fù)荷計(jì)算和無(wú)功功率補(bǔ)償 5
3.1 負(fù)荷計(jì)算 5
3.2 低壓側(cè)無(wú)功補(bǔ)償器的選擇 7
3.3 主變壓器選擇 9
4  確定供電系統(tǒng)圖 11
5  短路電流計(jì)算 12
5.1 繪制短路計(jì)算電路 12
5.2 求三相短路電流 12
6  高、低壓設(shè)備選擇 13
6.1 高壓設(shè)備的選擇 13
6.2 低壓開(kāi)關(guān)柜選擇 14
6.3 低壓斷路器的選擇與校驗(yàn) 15
7  配電線路選擇 16
7.1 高低壓母線的選擇 16
7.2 低壓出線的選擇 16
7.2.1 按發(fā)熱條件選擇 16
7.2.2 校驗(yàn)電壓損耗 17
8  保護(hù)整定計(jì)算 18
8.1 線路的過(guò)電流和速斷保護(hù) 18
8.1.1 過(guò)電流保護(hù) 18
8.1.2 電流速斷保護(hù) 19
8.2 變電所低壓側(cè)的保護(hù)裝置 19
8.3 電力變壓器的繼電保護(hù) 20
8.3.1  過(guò)電流保護(hù) 20
8.3.2 電流速斷保護(hù) 20
8.3.3 過(guò)負(fù)荷保護(hù) 21
9  變電所的防雷保護(hù)與接地裝置的設(shè)計(jì) 22
9.1 變電所的防雷保護(hù) 22
9.2變電所的接地裝置 23
10  總 結(jié) 25
致  謝 26
參考文獻(xiàn) 27
附錄：系統(tǒng)原理圖 28

摘  要
 電能是現(xiàn)代工業(yè)生產(chǎn)的主要能源和動(dòng)力，是實(shí)現(xiàn)生產(chǎn)自動(dòng)化的重要物質(zhì)基礎(chǔ)。隨著工業(yè)電氣自動(dòng)化技術(shù)的發(fā)展，工廠用電量的迅速增長(zhǎng)，對(duì)電能質(zhì)量、供電可靠性以及技術(shù)經(jīng)濟(jì)指標(biāo)等的要求也日益增高。電能既易于由其他形式的能量轉(zhuǎn)換而來(lái)，也易于轉(zhuǎn)換為其他形式的能量以供應(yīng)用；電能的輸送和分配既簡(jiǎn)單經(jīng)濟(jì)，又便于控制、調(diào)節(jié)和測(cè)量，有利于實(shí)現(xiàn)生產(chǎn)過(guò)程自動(dòng)化。因此，電能在現(xiàn)代工業(yè)生產(chǎn)及整個(gè)國(guó)民經(jīng)濟(jì)生活中和國(guó)家經(jīng)濟(jì)建設(shè)中應(yīng)用極為廣泛。
 本課題應(yīng)用供配電設(shè)計(jì)的基本原則和方法進(jìn)行工廠10kV變電所一次系統(tǒng)設(shè)計(jì)，在已有的專業(yè)知識(shí)的基礎(chǔ)上，了解了當(dāng)前我國(guó)變電所技術(shù)的發(fā)展現(xiàn)狀及技術(shù)發(fā)展趨向，按照現(xiàn)代電力系統(tǒng)設(shè)計(jì)要求，設(shè)計(jì)一個(gè)10kV綜合自動(dòng)化變電所。

關(guān)鍵詞：10kV變電所、一次系統(tǒng)、計(jì)算負(fù)荷

Abstract
 Power is the major energy and power of the modern industrial production, an important material basis for achieving production automation. Along with the development of industrial electrical automation technology, plant of rapid growth of electricity consumption, the quality of the power, supply- reliability, as well as the technical and economic indicators are required for increasing. Power not only transform form other forms of energy easily, but also easily be converted to other forms of energy to supply; The transmission and distribution of electricity is very simple and economic, also easy to control, adjust and measure, it is favorable to realize automatic production process. Therefore, power is widely used in modern industrial productivity, the entire national economy life as well as the national economy construction.
 This project used the basic principle of the power-supply design and its method to design the primary circuitry system in the 10kV substation of the factory, understood the development situation of substation technology and the technology development trend in our country on the basis of existing professional knowledge, according to the modern electrical system design requirements, design a 10kV integrated automation substation.
 
Key word: 10kV substation, primary circuitry system, the computational load