【正文】 ........................................ 1 ........................................................... 1 ........................................................... 1 2 負(fù)荷計算和無功補償 ...................................................... 4 ....................................................... 4 用需要系數(shù)法確定計算負(fù)荷 ......................................... 4 機加 一車間負(fù)荷計算 ............................................... 4 車間變電所負(fù)荷計算 ............................................... 6 ....................................................... 7 3 變電所主變的選擇和主接線設(shè)計 ........................................... 10 .............................................. 10 變電所主變型式的選擇 ............................................ 10 變電所主變?nèi)萘康倪x擇 ............................................ 10 .......................................... 11 變電所主線方案選擇的原則 ........................................ 11 變電所主線方案的比較 ............................................ 11 4 短路電流計算 ........................................................... 14 ...................................................... 14 .................................................... 14 5 一次設(shè)備的選擇與校驗 ................................................... 17 .......................................... 17 備的選擇與校驗 .......................................... 18 .......................................... 20 6 變電所進出線和電纜的選擇與校驗 ......................................... 22 .................................................... 22 .................................... 22 高壓進線的選擇與校驗 ............................................ 22 變壓器室引入電纜的選擇與校驗 .................................... 22 .............................................. 23 ............................................ 23 7 車間配線設(shè)計 ........................................................... 25 ............................................ 25 ................................................ 25 ...................................................... 27 8 車間變電所二次回路設(shè)計及繼電保護整定 ................................... 28 .................................................. 28 .................................................. 28 9 車間照明設(shè)計 ........................................................... 30 .................................................... 30 .......................................................... 30 ................................................ 31 10 變電所防雷與接地設(shè)置 .................................................. 34 變電所防雷措施 ................................................... 34 變電所接地裝置設(shè)計 ............................................... 34 11結(jié)論 .................................................................. 36 參考文獻(xiàn) ................................................................. 37 致謝 ..................................................................... 38 附錄 ..................................................................... 39 xxx 本科畢業(yè)設(shè)計 1 緒論 1 1 緒 論 設(shè)計目的及意義 本課題主要是為曙光機加工車間變電所及低壓配電系統(tǒng)設(shè)計，整 個系統(tǒng)主要由35/10Kv 工廠總降壓變電所， 500m 高壓架空 配電線路， 10/ 車間變電所，低壓配電系統(tǒng)以及用電設(shè)備組成。Shortcircuit current calculation。 關(guān)鍵詞： 負(fù)荷計算 車間變電所 主接線 短路電流計算 低壓配電系統(tǒng) xxx 本科生畢業(yè)設(shè)計 ABSTRACT II ABSTRACT Energy is the energy and power of modern industrial production. Supply and distribution technology, is to study the problem of electricity supply and distribution. Factory power supply design is a very important part in the design of the entire plant construction, substation is the core of the system of factory power supply. So It is very important to design and construction of a safe, economical substation, the quality of its design direct impact on the production and development of the future plant. The design is the design of the machine shop substations and low voltage distribution systems. Firstly, using the need coefficient method to calculate the load in the lowvoltage side reactive power pensation and determine the required transformer capacity, number of units. Secondly, proceed from the economy and reliability of electrical characteristics according to the machine shop and the mission statement of requirements to determine the main wiring scheme and select the desired high and low voltage device model by wiring scheme. Finally, determine the relay and lighting and lightning protection design according to the front design and calculation Careful analysis on the basis of the nature and quantity of, strict pliance with the requirements and principles of the relevant design, follow the steps above design the main wiring of the substation, layout, high and low pressure side of the protection device through CAD drawings unfolded. Keywords： Workshop substation 。最后，綜合前面的設(shè)計及計算確定相關(guān) 的繼電保護方案并進行照明和防雷設(shè)計。本文首先采用需要系數(shù)法進行負(fù)荷計算并在低壓側(cè)進行無功功率補償，進而確定所需變壓器的容量、臺數(shù)等。xxx 本科 生畢業(yè)設(shè)計 摘要 I 摘 要 電能 國家經(jīng)濟的命脈之一 ,無論是在工業(yè)建設(shè)還是農(nóng)業(yè)建設(shè)方面都發(fā)揮著不可取代的作用，是奠定社會主義現(xiàn)代化基礎(chǔ)不可缺少的能源 。本次設(shè)計是機加工車間變電所及低壓配電系統(tǒng)的設(shè)計。其次，根據(jù)機加工車間用電特點及任務(wù)書要求綜合設(shè)計經(jīng)驗以及不同接線方案的優(yōu)缺點，確定主接線方案，并由住接線方案選擇所需的高低壓設(shè)備型號。 在仔細(xì)分析符合性質(zhì)和數(shù)量的基礎(chǔ)上， 以嚴(yán)謹(jǐn)?shù)姆椒ㄍ瓿杀驹O(shè)計的內(nèi)容，達(dá)到設(shè)計任務(wù)書的要求，并將設(shè)計成果用 CAD 展現(xiàn)出來。Load calculation 。 Low Voltage Distribution System 。 在本次設(shè)計時，需要認(rèn)真貫徹執(zhí)行國家的各項方針政策，遵照有關(guān)的技術(shù)設(shè)計規(guī)范，遵循安全、經(jīng)濟、優(yōu)質(zhì)、可靠的原則，從整體出發(fā)，深入論證電源以及負(fù)荷分布的合理性，根據(jù)各個車間負(fù)荷的數(shù)量和性質(zhì)，生產(chǎn)工藝對負(fù)荷的要求，結(jié)合國家供電情況，建立適合自身生產(chǎn)和發(fā)展需要的供電系統(tǒng)，同時還應(yīng)注意近期規(guī)劃與遠(yuǎn)期規(guī)劃的關(guān)系，考慮其與發(fā)電、輸電、變電工程的協(xié)調(diào)統(tǒng)一關(guān)系，統(tǒng)籌兼顧，實現(xiàn)全面發(fā)展。 ② 工廠供電設(shè)計必須保障人身和設(shè)備安全，滿足電力系統(tǒng)對電能提出的優(yōu)質(zhì)、可靠、經(jīng)濟合理等要求，設(shè)計中應(yīng)采用符合國家現(xiàn)行有關(guān)標(biāo)準(zhǔn)的效率高、能耗低、性能先進的電器產(chǎn)品 [3]。 設(shè)計資料 ① 機加工一車間生產(chǎn)任務(wù) xxx