【正文】 河南理工大學(xué)畢業(yè)設(shè)計 （論文） 說明書 i 摘要 變電站綜合自動化系統(tǒng)自 20 世紀 90 年代以來，一直是我國電力行業(yè)中的熱點之一。它既是電力建設(shè)的需要也是市場的需要，我國每年變電站的數(shù)量以3%～ 5%的速度增長，每年有千百座新建變電站投入運行；同時根據(jù)電網(wǎng)的要求，每年又有不少變電站進行技術(shù)改造，以提高自動化水平。近幾年來我國變電站綜合自動化技術(shù)，無論從國外引進的，還是國內(nèi)自行開發(fā)研制的系統(tǒng)，在技術(shù)和數(shù)量上都有顯著的發(fā)展。本文首先根據(jù)任務(wù)書上所給系統(tǒng)與線路及所有負荷的參數(shù)，分析負荷發(fā)展趨勢 ,從負荷增長方面闡明了建站的必要性 然后通過對擬建變電站的概括以及出線方 向來考慮，并通過對負荷資料的分析，安全，經(jīng)濟及可靠性方面考慮，確定了 110kV， 35kV， 10kV 以及站用電的主接線，然后又通過負荷計算及供電范圍確定了主變壓器臺數(shù)，容量及型號，同時也確定了站用變壓器的容量及型號，最后，根據(jù)最大持續(xù)工作電流及短路計算的計算結(jié)果，對高壓熔斷器，隔離開關(guān)，母線，絕緣子和穿墻套管，電壓互感器，電流互感器進行了選型，從而完成了 110kV 變電站 的設(shè)計。 關(guān)鍵詞 ：變電站 。 變壓器 。 主接線 河南理工大學(xué)畢業(yè)設(shè)計 （論文） 說明書 ii Abstract Integrated substation automation system since 199039。s, Chinese power industry has been one of the hotspots. It is also the needs of the construction of electricity market demand, China in year of substation quantity rate of 3% ~ 5% a year, throuands of newlyconstructed substations is put into operation, According to requirements of electric substation, and there are many technical renovation, in order to improve the level of automation. In recent years, our integrated substation automation technology introduced from abroad, regardless of the domestic devolope, or in the system, technology and quantity are significant development. Firstly, according to the task given system and line book all the parameters, and the load from the analysis of load development trend, load increasing illustrates the necessity of the establishment of substations built by the generalization and outlet to consider, and through the analysis of the data of load, safety, economy and reliability into consideration, determine the 110 kv and consumers 10kV power station, as well as 35kV main connection, and then through the load calculation and power supply range determines the main transformer capacity and models, and also identified with the capacity of transformer station, finally, according to the model and maximum sustained working current and short circuit calculation results of highpressure fuse, isolating switch, bus, insulator and wear casing wall, voltage transformer, the selection of current transformer substation, and pleted the design of 110 kv. Keywords: substation 。 Transformer 。 The wiring 河南理工大學(xué)畢業(yè)設(shè)計 （論文） 說明書 I 目錄 1 工程概況 ................................................................................................................... 1 原始資料分析 ............................................................................................... 13 對原始資料的分析計算 .............................................................................. 14 2 110KV 變電所接入系統(tǒng)設(shè)計 ............................................................................... 16 確定電壓等級及回路數(shù) .............................................................................. 16 110kV 線 路導(dǎo)線的規(guī)格、型號及截面選擇 ............................................... 16 3 短路電流計算 ...................................................................................................... 18 短路電流計算的目的和條件 ...................................................................... 18 短路電流計算 ............................................................................................... 19 4 110kV 變電所地方供電系統(tǒng)設(shè)計 ......................................................................... 24 35kVA 線路設(shè)計 ........................................................................................... 24 35kV B 線路設(shè)計 ....................................................................................... 25 10kV A 線路設(shè)計 .......................................................................................... 26 10kV B 線路設(shè)計 .......................................................................................... 27 5 110kV 變電所主變選擇 ......................................................................................... 29 主變方案選擇 ............................................................................................... 29 主變方案技術(shù)比較 ....................................................................................... 29 主變?nèi)萘?、參?shù)選擇 ................................................................................... 30 主變方案經(jīng)濟比較 ....................................................................................... 32 所用變選擇 ................................................................................................... 34 6 主接線設(shè)計 ............................................................................................................. 23 主接線選擇原則 ........................................................................................... 35 110kV 主接線設(shè)計 ....................................................................................... 35 35kV主接線設(shè)計 ......................................................................................... 38 10kV主接線設(shè)計 ......................................................................................... 38 7 變電所電氣設(shè)備選擇 ............................................................................................ 40 河南理工大學(xué)畢業(yè)設(shè)計 （論文） 說明書 II 斷路器的選擇 .............................................................................................. 41 隔離開關(guān)的選擇 .......................................................................................... 47 電流互感器的選擇 ....................................................................................... 53 電壓互感器選擇 ........................................................................................... 61 避雷器的選擇 ............................................................................................... 62 主母線選擇 ................................................................................................... 62 消弧線圈設(shè)計 ............................................................................................... 64 8 繼電保護配置 ........................................................................................................ 65 主變壓器保護配置 ...