6kV變電所整定值及短路電流計算

6kV6kV變電所整定值及短路電流計算一、整定值計算617#有八條支路：:總功率P＝2×30+2×15＝90KW依據(jù)P 3UIcosP1033Ucos90103P1033Ucos9010334000.9主井絞車：P1033Ucos1001033400P1033Ucos10010334000.9額定電流I 160A28米平臺：6010334000.9總功率P＝60KW依據(jù)6010334000.93Ucos3Ucos

96A矸石皮帶：P1033Ucos9010334000.9總功P1033Ucos9010334000.9額定電流I 144A水源井：總功率P＝2×15+2×15＝60KW依據(jù)P 3UIcosP1033Ucos601033P1033Ucos6010334000.9副井絞車：P1033Ucos701033400P1033Ucos7010334000.9額定電流I 112A2#鍋爐：P1033Ucos451033400P1033Ucos4510334000.9額定電流I 72A循環(huán)泵：P1033Ucos301033400P1033Ucos3010334000.9額定電流I 48A裝車倉:總功率P＝2×45+2×30＝120KW依據(jù)P 3UIcosP1033Ucos90103P1033Ucos9010334000.9機修房:總功率P＝30KW依據(jù)P 3UIcos額定電流I

3Ucos30103Ucos3010334000.9則617＃動變二次側(cè)額定電流為I ＝144+160+96+144+96+112+48+72=872A總求得

UU12UI

I2I1400872I 221 U1

6300 55A1212U:高壓側(cè)額定電壓U:低壓側(cè)額定電壓I:高壓側(cè)額定電流I:低壓側(cè)額定電流cos：功率因數(shù)1212因此，高壓柜整定值為I=55*1.5=82.5AG90A618#有七條支路：407:總功率P＝2×30＝60KW依據(jù)P 3UIcosP1033Ucos601033P1033Ucos6010334000.9主井絞車：10010334000.9總功率P＝160KW依據(jù)10010334000.93Ucos3Ucos

160A28米平臺：P1033Ucos601033400P1033Ucos6010334000.9額定電流I 96A1#鍋爐：P1033Ucos451033400P1033Ucos4510334000.9額定電流I 72A3#鍋爐：P1033Ucos451033400P1033Ucos4510334000.9額定電流I 72A副井絞車：總功率P＝110KW依據(jù)P 3UIcos3Ucos3Ucos

112A707010334000.93010334000.9總功率P＝30KW依據(jù)3010334000.93Ucos3Ucos

48A則618＃動變二次側(cè)額定電流為I ＝96+160+96+72+72+112+48=656A總求得

UU12UI

I2I1400656I 221 U1

6300 42A1212U:高壓側(cè)額定電壓U:低壓側(cè)額