電機機械 - 考試
By Candice
at 2013-09-28T17:19
at 2013-09-28T17:19
Table of Contents
96 地特三等
題目: http://ppt.cc/fdnw
要求變壓器參數 Rc Xm r1 r2 x1 x2
1. 開路試驗
Yoc = Ioc/Voc = 0.06403
Rc = Voc^2 / Poc = 20 p.u
Xm = 1/Bm = 1/(Yoc^2 - (1/Rc)^2)^0.5 = 25 p.u
2. 短路測驗
Zsc = Vsc/Isc = 0.028844
(r1+r2) = Psc/ Isc^2 = 0.16
(x1+x2) = (Zsc^2 - 0.16^2)^0.5 = 0.024
到這邊 就卡住了 x1 ,x2 r1,r2 不知道怎們求
看公職王的是直接當作x1 = x2 ;r1 = r2 ?
麻煩好心的版友們 幫小弟解惑
--
題目: http://ppt.cc/fdnw
要求變壓器參數 Rc Xm r1 r2 x1 x2
1. 開路試驗
Yoc = Ioc/Voc = 0.06403
Rc = Voc^2 / Poc = 20 p.u
Xm = 1/Bm = 1/(Yoc^2 - (1/Rc)^2)^0.5 = 25 p.u
2. 短路測驗
Zsc = Vsc/Isc = 0.028844
(r1+r2) = Psc/ Isc^2 = 0.16
(x1+x2) = (Zsc^2 - 0.16^2)^0.5 = 0.024
到這邊 就卡住了 x1 ,x2 r1,r2 不知道怎們求
看公職王的是直接當作x1 = x2 ;r1 = r2 ?
麻煩好心的版友們 幫小弟解惑
--
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考試
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