【正文】 重慶科技學(xué)院 畢業(yè)設(shè)計(jì)（論文） 題 目 某天燃?xì)饷摿驈S降壓變電所及供配電系統(tǒng)設(shè)計(jì) 院 （系） 電氣與信息工程學(xué)院 專業(yè)班級 電自普 202101 學(xué)生畢業(yè)設(shè)計(jì)（論文）原創(chuàng)性聲明 本人以信譽(yù)聲明：所呈交的畢業(yè)設(shè)計(jì)（論文）是在導(dǎo)師的指導(dǎo)下進(jìn)行的設(shè)計(jì)（研究）工作及取得的成果，設(shè)計(jì)（論文）中引用他（她）人的文獻(xiàn)、數(shù)據(jù)、圖件、資料均已明確標(biāo)注出，論文中的結(jié)論和結(jié)果為本人獨(dú)立完成，不包含他人成果及為獲得重慶科技學(xué)院或其它教育機(jī)構(gòu)的學(xué)位或證書而使用其材料。與我一同工作的同志對本設(shè)計(jì)（研究）所做的任何貢獻(xiàn)均已在論文中作了明確的說明并表示了謝意。 畢業(yè)設(shè)計(jì)（論文）作者（簽字）： 年 月 日 I 摘 要 天然氣脫硫廠供電，就是指天然氣脫硫廠所需電能的供應(yīng)和分配，亦稱天然氣脫硫廠配電 ,本設(shè)計(jì)就是給一個天然氣脫硫廠的三個車間供配電。 眾所周知，電能是現(xiàn)代工業(yè)生產(chǎn)的主要能源和動力。電能既易于由其他形式的能量轉(zhuǎn)換而來，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單經(jīng)濟(jì)，又便于控制、調(diào)節(jié)和測量，有利于實(shí)現(xiàn)生產(chǎn)過程自動化，而且現(xiàn)代社會的信息技術(shù)和其他高新技術(shù)無一不是建立在電腦應(yīng)用的基礎(chǔ)之上的。因此電能在現(xiàn)代社會工業(yè)生產(chǎn)及整個國民經(jīng)濟(jì)生活 中應(yīng)用極為廣泛。 本設(shè)計(jì)為某天然氣脫硫廠供配電系統(tǒng)的設(shè)計(jì)，根據(jù)天然氣脫硫廠的三個車間用電設(shè)備的情況和生產(chǎn)要求，本次設(shè)計(jì)天然氣脫硫廠供配電先進(jìn)行分類，分清一級，二級和三級負(fù)荷，總體確定供電思路，充分保證供電可靠性。然后進(jìn)行負(fù)荷計(jì)算， 為滿足供電系統(tǒng)對企業(yè)功率因數(shù)的要求，進(jìn)行無功功率補(bǔ)償。確 定變電所主變壓器臺數(shù)和容量、聯(lián)結(jié)方式，然后設(shè)計(jì)本變電所的電氣主接線，進(jìn)行必要的短路電流計(jì)算，選擇高低壓設(shè)備及進(jìn)出線和校驗(yàn)變電次設(shè)備及進(jìn)出線，選擇整定繼電保護(hù)裝置，確定防雷和接地裝置保證供配電所得安全。 關(guān)鍵詞 ： 天然氣脫硫廠 供 配電 短路計(jì)算 變壓器 無功補(bǔ)償 電氣主接線 高低壓設(shè)備 繼電保護(hù) 重慶科技學(xué)院本科生畢業(yè)設(shè)計(jì) ABSTRCT II ABSTRACT Natural gas desulfurization plant powered, meaning gas desulfurization plant supply and distribution of electrical energy required, also known as natural gas desulfurization plant and distribution, this design is to give a gas desulfurization plant for the distribution of the three workshops. As we all know, energy is a major modern industrial production of energy and momentum. Power both easy conversion from other forms of energy from, but also easily converted into other forms of energy to supply the use. Electricity transmission and distribution both simple and economical, and easy to control, regulation and measurement, is conducive to the production process automation, and modern society, information technology and other hightech and both are built on the basis of puter applications. Therefore, in modern society, energy production and industrial life of the entire national economy wide range of applications. This design for a gas desulfurization plant supply and distribution system design, based on natural gas desulfurization plant three cases of electrical equipment workshop and production requirements, this design supply and distribution of natural gas desulfurization plants are classified first, to distinguish between one, two and three loads to determine the overall power train of thought, and fully guarantee the reliability of power supply. Then calculate the load, the power supply system of the enterprise in order to meet the requirements of the power factor for reactive power pensation. Determine the number of units and the main transformer substation capacity, linking methods, and then design the substation main electrical wiring, make the necessary shortcircuit current calculation, select high and low voltage equipment and the inlet and outlet and check substation secondary equipment and inlet and outlet, select tuning protection devices, lightning protection and grounding devices to determine supply and distribution ine guarantee safety. Keywords: supply and distribution of natural gas desulphurization plant； short circuit calculations； transformers； reactive power pensation； main electrical wiring； high and low voltage equipment； relay protection 重慶科技學(xué)院本科生畢業(yè)設(shè)計(jì) 目錄 目錄 摘 要 ............................................................................................................................. I ABSTRACT ...................................................................................................................II 1 引言 ............................................................................................................................. 1 設(shè)計(jì)背景 ......................................................................................................... 1 設(shè)計(jì)的目的、意義 ........................................................................................ 1 設(shè)計(jì)內(nèi)容 ........................................................................................................ 2 設(shè)計(jì)依據(jù) ........................................................................................................ 2 設(shè)計(jì)資料 ............................................................................................ 2 2 負(fù)荷計(jì)算 .................................................................................................................... 5 負(fù)荷計(jì)算概述 ......................................................................................................... 5 負(fù)荷計(jì)算公式 ................................................................................................. 5 負(fù)荷計(jì)算過程 ................................................................................................. 6 低壓側(cè)負(fù)荷計(jì)算 ................................................................................. 6 3 無功功率補(bǔ)償及計(jì)算 .............................................................................................. 10 無功補(bǔ)償?shù)囊?........................................................................................... 10 無功功率的人工補(bǔ)償裝置 ........................................................................... 10 無功功率補(bǔ)償原理 ....................................................................................... 10 無功補(bǔ)償后的工廠計(jì)算負(fù)荷 ....................................................................... 11 4 變配電所位置與形式的選擇 .................................................................................. 13 變配電所所址選擇得一般原則 ................................................................... 13 負(fù)荷中心的確定方法 .............................................................