Knowing the electric parameters for this Power Electric System below are equal to: * Internal resistance for the power generator: 50 * Length line: 300 km * Voltage: 125 kV * Surge impedance: 200 2 * Load Impedance: 150 § Gerador G t = to B Linha a) Draw the Bewley diagram for the voltages at A and B in time function, for an interval no superior to 10 ms after the switch is closed at t = Os. b) Draw the plotage of voltage versus time for A.

Knowing the electric parameters for this Power Electric System below are equal to: * Internal resistance for the power generator: 50 * Length line: 300 km * Voltage: 125 kV * Surge impedance: 200 2 * Load Impedance: 150 § Gerador G t = to B Linha a) Draw the Bewley diagram for the voltages at A and B in time function, for an interval no superior to 10 ms after the switch is closed at t = Os. b) Draw the plotage of voltage versus time for A.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.33P: Consider the three single-phase two-winding transformers shown in Figure 3.37. The high-voltage...

See similar textbooks

Similar questions

If you have 3-phase power and you need to step down (or up) in 3-phase voltage, how many single-phase transformers are needed? Explain.
The direct electrical connection of the windings allows transient over voltages to pass through the auto transfonner more easily, and that is an important disadvantage of the autotransformer. (a) True (b) False
Problem 5 Consider a three winding transformer with the following particulars: = Z₁ Z2 Z3 =0.02 + j0.08 £, V₂ = 400 V, 12 = 60/30° A, and I3 = 50/-40° A. Assume that V₂ is the reference phasor, calculate: The intermediate voltage Vo. a. b. The primary current I₁ and the primary voltage V₁. c. The tertiary voltage V3 referred to the primary side. d. The apparent powers and the power factors at the primary, secondary and tertiary terminals. e. The transformer efficiency.
A single-phase, 240 kVA, 240/4800 V transformer has the parameters shown in Figure Q5. Determine I and V at the primary and secondary when transformer is operating at full load kVA, 0.8 power factor leading and 220 V at the primary side. Find the voltage regulation. Use actual values and per unit system. 0.002625 Q 0.009 0 1.05 Ω 3.6 Ω V2 40 0 30 Q Figure Q5
Please answer the b) part of the question
i can't figure out the configuration of this xfmr.
A voltage transformer in Figure 8 has 1,500 turns of wire on its primary winding and 500 turns of wire for its secondary winding. What will be the turns ratio, a of the transformer. If 240 volts is applied to the primary winding, what will be the resulting secondary voltage. And if a 400 n resistor is connected to the secondary winding, what are the values of current Is and Ip. primary Vp Transformer Core NF Ns Figure 8 secondary Vs
Q2. a) Discuss the circumstances where parallel operation of transformers may be considered beneficial. b) Two three-phase transformers have the following secondary equivalent circuit parameters per phase where the values have been derived from your student number using the same method as in Question 1: x-2 y=8 Transformer 1: Transformer 2 = 0.03X 0 R2 = 0.04Y 0 %3D X = 0.09X Q X2 = 0.12Y 0 For example: If your student number is c1700123, then R, = 0.032 N and R, =0.043 0. Calculate the current delivered by each transformer if the load draws a current of 200 A at a power factor of 0.8X lagging when connected in parallel. State any assumptions which you make. For example: If your student number is c1700123, the power factor is 0.82 lagging.
Chapman Problem 3-4. A single-phase power system is shown in the figure below. The power source feeds a 100-kVA, 14/2.4-kV transformer through a feeder impedance of 38.2 + j140 N. The transformer's equivalent series impedance referred to its low-voltage is 0.12 + j0.5 N. The load on the transformer is 90 kW at 0.85 PF lagging and 2300V. а. What is the voltage at the power source of the system? b. What is the voltage regulation of the transformer? How efficient is the overall power system? С.
2.14 The resistances and leakage reactances of a 40-kVA 60-Hz 7.97-kV-V:240-V single-phase distribution transformer are R1 = 41.6 2 R2 = 37.2 m X1, = 42.1 2 X, = 39.8 m2 where subscript 1 denotes the 7.97-kV winding and subscript 2 denotes the 240-V winding. Each quantity is referred to its own side of the transformer. a. Draw the equivalent circuit referred to (i) the high- and (ii) the low-voltage sides. Label the impedances numerically. b. Consider the transformer to deliver its rated kVA to a load on the low-voltage side with 240 V across the load. (i) Find the high-side terminal voltage for a load power factor of 0.87 power factor lagging. (ii) Find the high-side terminal voltage for a load power factor of 0.87 power factor leading. c. Consider a rated-kVA load connected at the low-voltage terminals. Assuming the load voltage to remain constant at 240 V, use MATLAB to plot the high-side terminal voltage as a function of the power-factor angle as the load power factor varies from…
What are FACTS (Flexible Alternating Current Transmission Systems), and how do they improve the control and efficiency of power transmission?
The dc armature resistance of delta-connected alternator measured across its two terminal is 0.8 ohm. The effective resistance per phase is?