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103年 - 103 國立中山大學_碩士班招生考試_電機系(丁組)：電力工程#110072
> 申論題
3. Discuss the solution procedures for a power flow problem solved by a Netwon-Raphson technique. (including the procedure for swing bus, PV bus and PQ bus) (15%)
相關申論題
(a) Calculate the voltage induced in the rotating loop () and the current flowing through the resistor. (10%)
#471567
(b) Calculate the induced torque, electric power being generated and mechanical power being consumed by the loop. (15%)
#471568
2. Calculate the geometric mean radius of conductors shown in Fig. 2 in terms of the radius r of an individual strand. (10%)
#471569
4. The impedance matrix () of a power system is Calculate the short-circuit current for a three-phase fault occurred in bus 2 and determine the bus voltages during the fault (15%).
#471571
5. Derive the solution for the following economic dispatch problem by Lagrangian multiplier (15%)
#471572
6.Assume that the impedances for zero-sequence, positive-sequence and negative-sequence networks are Z0, Z1 and Z2 , respectively. Derive the formulas for I0, I1 , I2, and Ia and draw the interconnected sequence networks for a single line-to-ground fault as shown in Fig. 3 (20%)
#471573
(c) leading power factor. (15%)
#471776
(b) lagging power factor and
#471775
(a) unity power factor,
#471774
(b) Calculate the critical clearing time for the generator when a three-phase bolted short-circuit at the generator terminals causes Pe =0. (15%)
#471773
相關試卷
104年 - 104 國立中山大學_碩士班招生考試_電機系(丁組)：電力工程#110208
104年 · #110208
103年 - 103 國立中山大學_碩士班招生考試_電機系(丁組)：電力工程#110072
103年 · #110072
102年 - 102 國立中山大學_碩士班招生考試_電機系(丁組)：電力工程#109115
102年 · #109115
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