【正文】 摘 要 電力是煤礦系統(tǒng)的主要能源，供電系統(tǒng)是由電氣設(shè)備及配電線路按一定的接線方式所組成。 本設(shè)計(jì)為煤礦 35kV 地面變電所設(shè)計(jì)，目的是建立 35kV 地面變電所，為煤礦提供可靠的電源。 整個(gè)設(shè)計(jì)包括 35kV 變電所設(shè)計(jì)的所有內(nèi)容，同時(shí)考慮到煤礦供電系統(tǒng)的特點(diǎn)，對(duì)變電所的負(fù)荷進(jìn)行了分組。通過對(duì)短路電流的計(jì)算，確定了系統(tǒng)主接線及運(yùn)行方式，同時(shí)對(duì)于變電站內(nèi)的主設(shè)備進(jìn)行合理的選型。本設(shè)計(jì)選擇選擇兩臺(tái)主變壓器，其他設(shè)備如斷路器，隔離開關(guān)，電流互感器，電壓互感器，無(wú)功補(bǔ)償裝置和繼電保護(hù)裝置等等也按照具體要求進(jìn)行選型、 設(shè)計(jì)和配置，力求做到運(yùn)行可靠，操作簡(jiǎn)單、方便，經(jīng)濟(jì)合理，具有擴(kuò)建的可能性和改變運(yùn)行方式時(shí)的靈活性。使其更加貼合實(shí)際，更具現(xiàn)實(shí)意義。 關(guān)鍵詞： 35kV 變電所 設(shè)計(jì) Abstract Electric power is the main energy in coal mine system, power supply system is posed of electrical equipment and the distribution line according to a certain mode of connection. The design for the 35kV coal mine surface substation design, aims to establish the 35kV ground substation, provide reliable power supply for coal mine. The design includes the design of 35kV substation all content, taking into account the characteristics of mine power supply system, the load on the substation grouping. Through the calculation of shortcircuit currents, determine the system main connection and operation mode, at the same time for substation primary equipment reasonable selection. This design choice of two main transformers, other equipment such as a circuit breaker, isolating switch, current transformer, voltage transformer, reactive power pensation device and relay protection device and so on in accordance with the specific requirements for the selection, design and configuration, and strive to achieve reliable running, simple operation, convenient, economical and reasonable, with expansion and the possibility of change operation mode when the flexibility. To make it more practical, more practical. Key words: 35kV。 substation。 design 目錄 摘 要 ......................................................................................................................... 1 Abstract............................................................................................................................. 2 1 前言 .............................................................................................................................. 1 2 原始資料 ....................................................................................................................... 2 ..................................................................................................... 2 ............................................................................................................... 2 3 負(fù)荷統(tǒng)計(jì)和無(wú)功補(bǔ)償?shù)挠?jì)算 ........................................................................................... 4 負(fù)荷計(jì)算的目的 .................................................................................................. 4 負(fù)荷計(jì)算方法 ...................................................................................................... 4 負(fù)荷計(jì)算過程 ........................................................................................................ 5 無(wú)功補(bǔ)償 ............................................................................................................... 6 無(wú)功補(bǔ)償概述 .................................................................................................... 6 無(wú)功補(bǔ)償?shù)挠?jì)算 ................................................................................................. 6 無(wú)功補(bǔ)償裝置 ........................................................................................................ 7 4 主變壓器與所用變壓器的選擇 ............................................................................................ 8 規(guī)程中的有關(guān)變電所主變壓器選擇的規(guī)定 .................................................................. 8 主變臺(tái)數(shù)的確定 ........................................................................................................ 8 主變?nèi)萘康拇_定 ........................................................................................................ 8 主變形式的選擇 ........................................................................................................ 8 所變的選擇 ............................................................................................................... 8 5 電氣主接線設(shè)計(jì) ............................................................................................................... 10 電氣主接線概述 ...................................................................................................... 10 主接線的設(shè)計(jì)原則 ................................................................................................... 10 主接線設(shè)計(jì)的基本要求 ............................................................................................ 10 主接線設(shè)計(jì) ............................................................................................................. 10 35kV側(cè)主接線設(shè)計(jì) ............................................................................................ 10 10kV側(cè)主接線設(shè)計(jì) .............................................................................................11 6 短路電流計(jì)算 ............................................................................................................... 13 概述 ........................................................................................................................ 13 產(chǎn)生短路的原因和短路的定義 .............................................................................. 13 短路的種類 .......................................................................................................... 13 短路電流計(jì)算的目的 ............................................................................................ 13 短路電流計(jì)算的方法和條件 ..................................................................................... 13 短路電流計(jì)算方法 ............................................................................................... 13 短路電流計(jì)算條件 ............................................................................................... 14 短路電流的計(jì)算 .............................................................................