【正文】 I 某塑料制品廠總配變電所的設(shè)計(jì) 摘 要 某塑料制品廠車間變電所和配電系統(tǒng)設(shè)計(jì)是對工廠供電具有針對性的設(shè)計(jì)。設(shè)計(jì)對工廠供電方式、主要設(shè)備的選擇、保護(hù)裝置的配置及防雷接地系統(tǒng)進(jìn)行了 相應(yīng) 的敘述，內(nèi)容主要包括高壓側(cè)和低壓側(cè)的短路計(jì)算，設(shè)備選擇及校驗(yàn)，主要設(shè)備繼電保護(hù)設(shè)計(jì)，配電裝置設(shè)計(jì)，防雷和接地設(shè)計(jì)等。 本設(shè)計(jì)考慮了所有用電設(shè)備并對這些負(fù)荷進(jìn)行了計(jì)算。通過計(jì)算出的有功、無功和視在功率選擇變壓器的大小和相應(yīng)主要設(shè)備的技術(shù)參數(shù)，再根據(jù)用戶對功率因數(shù)的要求，計(jì)算電容器補(bǔ)償裝置的容量，從而得出所需電容器的大小 。 根據(jù)與供電部門的協(xié)議，決定總配變電所及配電系統(tǒng)的主接線圖。電氣主接線對電氣設(shè)備的選擇，配電所的布置，運(yùn)行的可靠性和靈活性，操作和檢修的安全以及今后的擴(kuò)建，對電力工程建設(shè)和運(yùn)行的經(jīng)濟(jì)節(jié)約等，都由很大的影響。 本設(shè)計(jì)在主要設(shè)備的繼電保護(hù)設(shè)計(jì)和整定計(jì)算中，對電力變壓器、真空斷路器等主要設(shè)備的保護(hù)配置提出了要求，明確了保護(hù)定值計(jì)算方法。 關(guān)鍵詞： 變電所；配電系統(tǒng)；負(fù)荷和短路計(jì)算；設(shè)備選型；繼電保護(hù)。 II A Design of a Chief Distribution Substation of a Plastic Products Factory Abstract A plastic products factory workshop substation and electrical system design of the factory is the design of power supply has targeted. Set A program to factory powersupply modes, the main equipment selection, protective device configuration and lightning proof grounding system are detailed narrated, content mainly includes high voltage side and low voltage side short circuit calculation, equipment selection and calibration, the main equipment relay protection design, power distribution equipment design, lightning protection and grounding design, etc. This design is given all electrical equipment and calculated to these load. Through the active, calculate the reactive power and ShiZai power transformer size and corresponding choice of main equipment of technical parameters, again according to user requirements of voltage capacitor pensation devices, calculating the requirements of power factor, concluded that the size of the capacitors. According to the agreement with the power supply departments, decided to always match the Lord and distribution system for substation hookup. The main electrical wiring for electrical equipment choice, the distribution place of decorate, operation reliability and flexibility, operation and maintenance of safety and future expansion of electrical engineering, construction and operation, saving the economy by influence. This design in the main equipment of relay protection design and setting calculation of power transformer, vacuum circuit breaker protection configuration of such main equipments proposed requirements, clear the protection setting value calculation method. Key Words: Substation； power distribution systems； load and short circuit calculation；equipment selection； relay protection. III 目 錄 引言 ............................................................................................................................................... 1 第一章 緒論 ................................................................................................................................... 2 畢業(yè)設(shè)計(jì)內(nèi)容及研究意義 ................................................................................................... 2 課題的研究現(xiàn)狀和發(fā)展趨勢 ................................................................................................ 2 課程設(shè)計(jì)任務(wù)書 ................................................................................................................. 3 第二章 負(fù)荷計(jì)算及無功功率補(bǔ)償 ................................................................................................... 5 負(fù)荷計(jì)算的方法 ................................................................................................................. 5 負(fù)荷計(jì)算 ............................................................................................................................ 6 無功功率補(bǔ)償 ..................................................................................................................... 8 無功補(bǔ)償容量的確定 ........................................................................................................ 10 第三章 主變壓器的選擇 ............................................................................................................... 12 變電所變壓器容量、臺數(shù)、型號選擇 ................................................................................ 12 總變電所位置和型式的選擇 ............................................................................................. 13 變壓器損耗計(jì)算 ............................................................................................................... 14 高壓側(cè)無功補(bǔ) 償計(jì)算 ........................................................................................................ 15 第四章 電氣主接線 ...................................................................................................................... 16 對電氣主接線的基本要求和原則 ....................................................................................... 16 電氣主接線設(shè)計(jì)程序 ........................................................................................................ 17 主接線設(shè)計(jì) ...................................................................................................................... 18 第五章 短路電流的計(jì)算 ............................................................................................................... 21 概述 ................................................................................................................................ 21 短路電流的計(jì)算 ............................................................................................................... 22 第六章 電氣設(shè)備的選擇 ............................................................................................................... 25 電氣設(shè)備選擇的一般原則 ................................................................................................. 25 斷路器、隔離開關(guān)及互感器的選擇 ................................................................................... 26 變電所進(jìn)出線的選擇校驗(yàn) ................................................................................................. 30 第七章 繼電保護(hù)和二次回路的確定 .............................................................................................. 39