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1、綜采工作面供電的畢業(yè)設計目錄摘 要IABSTRACTIII目錄V1緒論11.1綜采工作面供電概述11.1.1概述11.1.2綜采工作面負荷統(tǒng)計22選擇變壓器32.11#變壓器容量的選擇32.22#變壓器容量的選擇32.33#變壓器容量的選擇43選擇高壓電纜53.1計算公式及參數(shù):53.1.1電纜:1#移變53.1.2電纜:2#移變63.1.3電纜:3#移變64選擇低壓電纜94.1低壓電纜長度的確定原則:94.2計算公式及參數(shù):94.3正常運行時回路電壓損失校驗115短路電流計算156選擇低壓開關、起動器196.1低壓開關型號
2、的確定196.2分斷能力校驗197高壓開關整定217.11#移變高壓開關的整定217.22#移變高壓開關的整定217.33#移變高壓開關的整定22418低壓開關和移變低饋保護裝置整定258.1移變低饋過流保護裝置整定258.2磁力啟動器過流保護裝置的整定259結論與展望29致謝31參考文獻33附錄35聲明…………………………………………………………………………………….3741CONTENTSCONTENTS1Preface……………………………………………………………………………………….11.1Mechanizedmin
3、ingfaceSupplyOverview……………………………………………11.1.1Overview………………………………………………………………………………..11.1.2MechanizedminingfaceLoadCalculation……………………………………..22Selecttransformer…………………………………………………………………………32.11#Transformercapacitychoice………………………………………………………..32.22#Transformercapaci
4、tychoice………………………………………………………...32.33#Transformercapacitychoice………………………………………………………..43Selecthigh-voltagecable…………………………………………………………………..53.1Formulaandtheparameters……………………………………………………………….53.1.1Cable:conveyor,crusher,loader…………………………………………………….53.1.2Cable:shearer
5、,milkpump,spraypump……………………………………………63.1.3Cable:Belt…………………………………………………………………………64Selectlow-voltagecables………………………………………………………………….94.1Lowvoltagecablelengthtodeterminetheprinciples………………………………..94.2Formulaandtheparameters…………………………………………………………...94.3Normaloperation
6、circuitvoltagelosscalibration…………………………………...115Short-circuitcurrentcalculation…………………………………………………………..156Selectlow-voltageswitch,starter…………………………………………………………196.1Lowswitchmodelsdetermine………………………………………………………196.2Checkbreakingcapacity…………………………………………………………….197Hig
7、h-pressureswitchsetting………………………………………………………………217.11#Varianthigh-pressureswitchsetting……………………………………………..217.22#Varianthigh-pressureswitchsetting……………………………………………..217.33#Varianthigh-pressureswitchsetting……………………………………………..228Low-voltageswitchesandVariantlowfeedpr
8、otectionsetting…………………………..258.1Variantlowfedovercurrentprotectiondevicetuning………………………………258.2Magneticstarterovercurrentdevicetuning………………………………