【正文】 the power to every place with safe, dependable, and economical. As an important part of power’s transport and control, the transformer substation must change the mode of the traditional design and control, then can adapt to the modern electric power system, the development of modern industry and the of trend of the society life.Electric power industry is one of the foundations of national industry and national economic development to industry, it is a coal, oil, natural gas, hydropower, nuclear power, wind power and other energy conversion into electrical energy of the secondary energy industry, it for the other departments of the national economy fast and stable development of the provision of adequate power, and its level of development is a reflection of the country39。所以輸送和分配電能是十分重要的一環(huán)。升壓變電所一般建在發(fā)電廠，降壓變電所一般建立在靠近負(fù)荷中心的低點。變電所的主要設(shè)備有電力變壓器，母線和開關(guān)設(shè)備等。隨著計算機技術(shù)、現(xiàn)代通訊和網(wǎng)絡(luò)技術(shù)的發(fā)展，為目前變電站的監(jiān)視、控制、保護和計量裝置及系統(tǒng)分隔的狀態(tài)提供了優(yōu)化組合和系統(tǒng)集成的技術(shù)基礎(chǔ)。首先根據(jù)任務(wù)書上所給系統(tǒng)與線路及所有負(fù)荷的參數(shù)，分析負(fù)荷發(fā)展趨勢。. 三章是變電站電氣主接線的設(shè)計，分別通過對110kV、35kV、10kV側(cè)電氣主接線的擬定，選擇出最穩(wěn)定可靠的接線方式。第五章是電氣設(shè)備的選擇，電氣設(shè)備包括母線、斷路器、隔離開關(guān)、電流和電壓互感器、熔斷器。本次畢業(yè)設(shè)計以10kV 變電站為主要設(shè)計對象，該10kV變電站是地區(qū)重要變電站，是電力系統(tǒng)10kV電壓等級的重要部分。同時進行各種變壓器的選擇，從而確定變電站的接線方式，再進行短路電流計算，選擇送配電網(wǎng)絡(luò)及導(dǎo)線，進行短路電流計算。這對于保護下級各負(fù)荷是十分有利的。按其在電力系統(tǒng)中的地位可分為樞紐變電所、中間變電所和終端變電所。其功能運行情況、容量大小直接影響下級負(fù)荷的供電，進而影響工業(yè)生產(chǎn)及生活用電。Therefore, power transmission and distribution is critical. Substation is to enable superior power plant power plants or power after adjustments to the lower load of books is an important part of power transmission. Operation of its functions, the capacity of a direct impact on the size of the lower load power, thereby affecting the industrial production and power system if a link failure, the system will protect the part of action. May result in power outages and so on, to the production and living a great disadvantage. Therefore, the substation in the electric power system for the protection of electricity reliability, sensitivity and other indicators.Power plants and substations are connected user link in the middle, transformation and distribution of electric energy to play the role. According to the different tasks substation can be divided into stepup transformer stepdown transformer substation and two broad categories. Stepup substation built on the general power plant, the general stepdown transformer near the load center built on the can also be divided according to medium voltage substation (60 kV and below), highvoltage substations (110 ~ 220 kV), EHV Substation (330 ~ 765 kV) and Ultra High Voltage Substation (1000 kV and above). In electric power system according to their