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| 折扣與優(yōu)惠：團購最低可5折優(yōu)惠 - 了解詳情 | 論文格式：Word格式(*.doc) |  |
摘 要:電力是現(xiàn)在使用最為廣泛且地位非常重要的能源,隨著中國工業(yè)的不斷發(fā)展，此時用電安全性和可靠性的問題就體現(xiàn)出來了，電氣設(shè)備作為供電系統(tǒng)的重要組成部分，它本身的性能及質(zhì)量影響著供電系統(tǒng)是否安全可靠的運行。本次設(shè)計是依據(jù)冶金機械修造廠提供的相關(guān)資料設(shè)計一個總降壓變電所及高壓配電系統(tǒng)。首先依據(jù)機修廠提供的相關(guān)資料，詳細的對該機修廠進行了負荷計算，通過無功補償來提高系統(tǒng)的功率因數(shù)減少電能的損耗，并且依據(jù)負荷情況對變壓器的臺數(shù)和容量進行了選擇。依據(jù)工廠的布局和負荷情況確定了總降壓變電所的所址，總降壓變電所一次側(cè)的接線方式為內(nèi)橋式，二次側(cè)為單母線分段。接著為了確保系統(tǒng)安全的運行，進行了短路計算，根據(jù)計算結(jié)果，對變電所的一次設(shè)備以及進出線進行了選擇與校驗。最后我們對變電所進行繼電保護的整定、防雷保護措施的選擇和接地裝置的設(shè)計以此來增加系統(tǒng)的安全性。 關(guān)鍵詞：供電系統(tǒng) 負荷計算 短路計算 繼電保護
ABSTRACT:Electricity is now the most widely used and very important position in energy,with the continuous development of China's industrial,The electrical safety and reliability problems manifested,Electrical equipment as an important part of the power supply system,Itself affect the performance and quality of power supply system is safe and reliable operation.The design is based on machinery repair have designed a total step-down substation and power distribution systems.First of all, based on the information provided by the machinery repair, the machinery repair load calculation, reactive power compensation to improve the power factor of the system to reduce the power loss, and were selected based on the load conditions on the number and capacity of the transformer station.Determined based on the layout of the factory and load the address of the step-down substation, step-down substation wiring for single busbar wiring.Then, in order to ensure the safe operation of the system, short circuit calculation, based on the results of substation equipment and inlet and outlet selection and calibration.Finally, we substation relay protection setting, the selection and design of the grounding device for lightning protection measures in order to increase the security of the system. Keywords:Supply system；Load Calculation；Short-circuit calculation；Relay |
