作者ganlinlaumu (流浪汉)
看板Electronics
标题[请益] 三相电路学问题
时间Sun Mar 15 04:03:42 2009
A 132kv(nominal) three-phase supply to a distribution company
supplies 200MW with a lagging power factor of 0.9,when the voltage at the
supply point in V=1.03∠0 per unit.
a) what is the apparent power, S that is supplied into the load, in per
unit on 100 MVA?
b) find the magnitude I and phase angle φ° of the current I = I ∠ φ°
题目没有Z 无法求得I 请问有其他办法吗?
请前辈指点 感谢
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1F：推 triumph323:有时候求I 是不需要Z的= = 03/15 16:44
2F：→ ganlinlaumu:是的我知道 可是目前想不到如何解 请问可以指点一下吗 03/15 16:51
3F：→ M9407120:S=222MVA 角度25.84 03/15 17:11
4F：→ M9407120:标么值2.22 03/15 17:12
5F：→ M9407120:I=943.66 角度 -25.84 03/15 17:14
6F：→ M9407120:S=1.732 x V x I* 03/15 17:19
7F：→ ganlinlaumu:感谢您 我了解了:) 03/16 12:27