220KV變電站一次系統(tǒng)設(shè)計(jì) 畢業(yè)論文

220KV變電站一次系統(tǒng)設(shè)計(jì)
摘要
隨著經(jīng)濟(jì)的發(fā)展和現(xiàn)代工業(yè)建設(shè)的迅速崛起，供電系統(tǒng)的設(shè)計(jì)越來(lái)越全面、系統(tǒng)，工廠用電量迅速增長(zhǎng)，對(duì)電能質(zhì)量、技術(shù)經(jīng)濟(jì)狀況、供電的可靠性指標(biāo)也日益提高，因此對(duì)供電設(shè)計(jì)也有了更高、更完善的要求。設(shè)計(jì)是否合理，不僅直接影響基建投資、運(yùn)行費(fèi)用和有色金屬的消耗量，也會(huì)反映在供電的可靠性和安全生產(chǎn)方面，它和企業(yè)的經(jīng)濟(jì)效益、設(shè)備人身安全密切相關(guān)。
　　變電站是電力系統(tǒng)的一個(gè)重要組成部分，由電器設(shè)備及配電網(wǎng)絡(luò)按一定的接線方式所構(gòu)成，他從電力系統(tǒng)取得電能，通過(guò)其變換、分配、輸送與保護(hù)等功能，然后將電能安全、可靠、經(jīng)濟(jì)的輸送到每一個(gè)用電設(shè)備的轉(zhuǎn)設(shè)場(chǎng)所。作為電能傳輸與控制的樞紐，變電站必須改變傳統(tǒng)的設(shè)計(jì)和控制模式，才能適應(yīng) 現(xiàn)代電力系統(tǒng)、現(xiàn)代化工業(yè)生產(chǎn)和社會(huì)生活的發(fā)展趨勢(shì)。隨著計(jì)算機(jī)技術(shù)、現(xiàn)代通訊和網(wǎng)絡(luò)技術(shù)的發(fā)展，為目前變電站的監(jiān)視、控制、保護(hù)和計(jì)量裝置及系統(tǒng)分隔的狀態(tài)提供了優(yōu)化組合和系統(tǒng)集成的技術(shù)基礎(chǔ)。

　　關(guān)鍵詞：變電站、負(fù)荷、變壓器、電氣主接線、

220KV substation system design time

Abstract

With economic development and the rapid rise of modern industrial construction, power supply system design more comprehensive, systematic, plant fast-growing consumption of electricity, for power quality, technical and economic conditions, supply reliability index is also increasing, so of power supply design have higher and better requirements. Whether the design is reasonable, not only a direct impact on infrastructure investment, operation costs and the consumption of non-ferrous metals, will be reflected in the electricity supply reliability and security of production, its economic benefits of enterprises, equipment, personal safety are closely linked.
Substation is the power system, an important component of, from electrical equipment and wiring distribution network according to a certain mode of composition, he obtained from the energy power system, through its transformation, distribution, transport and protection functions, and then energy security, reliable and economical transportation to every electrical equipment, turn-based sites. As a power transmission and control hub, substation must change the traditional design and control mode, to adapt to the modern power

systems, modern industrial production and social life trends. With computer technology, modern communications and network technology development,
For the current substation monitoring, control, protection and measuring devices and systems provide a separate state of optimal combination and system integration technology base.
Key words： substation, load, transformers, main electrical wiring,

 
目 錄
前言………………………………………………………………… ………………1
第1章 對(duì)原始資料的分析…………………………………… ………… ………3
1.1 所設(shè)計(jì)變電所的特點(diǎn)…………………………………………… ………3
1.2 變壓器初選方案的選擇………………………………………… ………3
1.3 電氣主接線方案的選擇…………………………………… ……………4
第2章 變電所電氣主接線方案設(shè)計(jì)………………………………………………5
2.1 電氣主接線設(shè)計(jì)原則和要求………………………………………………5
2.2 接線方案特點(diǎn)及其最佳接線方案的確定…………………………………6
2.3 主變壓器選擇………………………………………………………………10
2.4 兩個(gè)初選電氣主接線方案圖………………………………………………12
2.5 初選電氣主接線方案的經(jīng)濟(jì)計(jì)算比較……………………………………12
2.6 本所方案的評(píng)定……………………………………………………………19
第3章 變電所電氣主接線短路電流計(jì)算…………………………………………22
3.1 概述…………………………………………………………………………22
3.2 計(jì)算短路電流的標(biāo)幺制方法………………………………………………25
3.3 短路電流的實(shí)用計(jì)算法……………………………………………………25
3.4 短路電流計(jì)算過(guò)程及結(jié)果…………………………………………………26
第4章 主要電器設(shè)備選擇………………………………………………………… 31
4.1 電器的選擇條件……………………………………………………………31
4.2 高壓斷路器及選擇…………………………………………………………32
4.3 高壓隔離開(kāi)關(guān)的選擇………………………………………………………34
4.4 電流互感器的選擇…………………………………………………………36
4.5 電壓互感器的選擇…………………………………………………………37
4.6 匯流母線的選擇……………………………………………………………39
4.7 避雷器的選擇………………………………………………………………46
第5章 220KV和110KV屋外配電裝置造型…………………………………………51
5.1 概述…………………………………………………………………………51
5.2 220KV和110KV屋外配電裝置造型…………………………………… …51
第6章 二次系統(tǒng)繼電保護(hù)配置及自動(dòng)裝置配置……………………… …………… …53
6.1二次系統(tǒng)繼電保護(hù)的配置…………………………………………………… …53
6.2 自動(dòng)裝置的配置……………………………………………………………… …57
致    謝……………………………………………………………………… ……58
參考文獻(xiàn)……………………………………………………………………… ……59