常用电气计算实例

常用电气计算实例:变压器容量计算表??????????????? 名称
?? 组别????????? "?"额定
功率"?"输入
容量"?"需要
系数"?"功率
因数"?"功率因
数正切"?"有功
功率"?"无功
功率"?"视在
功率"?"低压 额定
电流"?"10kV
额定 电流"?"有功功率
同期系数 (0.8~0.9)"?"无功功率
同期系数 (0.93~0.97)"?"无功
功率 补偿率"
用电设备?Pe(kW)?S(kV.A)?Kx?cosφ?tgφ?Pjs(kW)?Qjs(kvar)?Sjs(kV.A)?Ijs(A)?Igs(A)?Kp?Kq?△qc
动力?300.00 ??0.80 ?0.75 ?0.88 ?240.00 ?211.66 ?320.00 ?????
照明?15.00 ??0.75 ?0.80 ?0.75 ?11.25 ?8.44 ?14.06 ?????
?0.00 ???0.70 ?1.02 ?0.00 ?0.00 ?0.00 ?????
?0.00 ???0.70 ?1.02 ?0.00 ?0.00 ?0.00 ?????
?0.00 ???0.70 ?1.02 ?0.00 ?0.00 ?0.00 ?????
?0.00 ???0.70 ?1.02 ?0.00 ?0.00 ?0.00 ?????
?0.00 ???0.70 ?1.02 ?0.00 ?0.00 ?0.00 ?????
?0.00 ???0.70 ?1.02 ?0.00 ?0.00 ?0.00 ?????
?0.00 ???0.70 ?1.02 ?0.00 ?0.00 ?0.00 ?????
?0.00 ???0.70 ?1.02 ?0.00 ?0.00 ?0.00 ?????
?0.00 ???0.70 ?1.02 ?0.00 ?0.00 ?0.00 ?????
?0.00 ???0.70 ?1.02 ?0.00 ?0.00 ?0.00 ?????
?0.00 ???0.70 ?1.02 ?0.00 ?0.00 ?0.00 ?????
?0.00 ???0.70 ?1.02 ?0.00 ?0.00 ?0.00 ?????
?0.00 ???0.70 ?1.02 ?0.00 ?0.00 ?0.00 ?????
?0.00 ???0.70 ?1.02 ?0.00 ?0.00 ?0.00 ?????
合计?315.00 ?????251.25 ?220.10 ?334.02 ?????
同时系数????0.73 ?0.92 ?226.13 ?209.09 ?307.98 ?467.93 ??0.90 ?0.95 ?
电容补偿???????134.77 ??????0.60
电容补偿后????0.95 ?0.33 ?226.13 ?74.32 ?238.03 ?361.64 ????
功率损耗??????2.38 ?11.90 ??????
总计???0.78 ?0.94 ??228.51 ?86.23 ?244.23 ?371.07 ????
?????????????
30~16000kV.A容量变压器??315 ???????454.66 ?18.19 ???
"变压器负荷率
0.75 ～0.85"??0.78 ???????????
变压器应选容量为:??315 ??kV.A??无功补偿容量为:??135 ?kvar????