A generation plant has a 12kV, balanced three-phase, wye connected synchronous generator. It has two (2) pole pairs and is coupled to and driven by a gas turbine engine which maintains the rotational speed of the rotor at 1500 rpm. The output of the generator is connected to a 12kV/66&V delta-star composite three phase transformer in the plant's substation. The transformer secondary windings then connect to three transmission lines that leave the substation, each of which has a total resistance and inductance of 102 and 95.5mH respectively. The total number of customers supplied by the transfomer is modelled as a balanced three phase delta connected load at the end of the transmission lines with a resistance and inductance of 5002 and 1.5H respectively per phase. a) Assuming the transformer is ideal and lossless and that all neutrals are grounded, calculate: 1) The line currents between the transformer and load i) The phase curents in the delta load i) The phase voltages of the delta load

A generation plant has a 12kV, balanced three-phase, wye connected synchronous generator. It has two (2) pole pairs and is coupled to and driven by a gas turbine engine which maintains the rotational speed of the rotor at 1500 rpm. The output of the generator is connected to a 12kV/66&V delta-star composite three phase transformer in the plant's substation. The transformer secondary windings then connect to three transmission lines that leave the substation, each of which has a total resistance and inductance of 102 and 95.5mH respectively. The total number of customers supplied by the transfomer is modelled as a balanced three phase delta connected load at the end of the transmission lines with a resistance and inductance of 5002 and 1.5H respectively per phase. a) Assuming the transformer is ideal and lossless and that all neutrals are grounded, calculate: 1) The line currents between the transformer and load i) The phase curents in the delta load i) The phase voltages of the delta load

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

See similar textbooks

Similar questions

A 6 pole, delta connected three-phase alternator having 144 slots is wound using double layer lap coils having 7 turns per coil. The coil has 16 / 24 pitch. The flux per pole is 7380000 maxuells. If the alternator is driven at a speed of 700 rpm, determine the total line-to-line generated voltage.
2. A four-pole three-phase 50 hertz, star connected AC generator has 12 stator slots. There are 4 conductors per slot and a sinusoidally distributed flux per pole of 36mWb. Find the terminal voltage on open circuit. If the coil span factor is 0.85 lagging.
Please answer number 3 thank you
pls find a and b
can i get some help
c) A 100 kVA, 4500/250 V, 50 Hz single-phase transformer has 100 secondary turns.Determine: i.The primary current.ii.The secondary current.iii.The number of primary turns.
3. One phase of a 3-phase alternator consist of 12 coils in series. Each coil has an rms voltage of 10V induced in it and the coils are arranged in slots so that there is a successive phase displacement of 10 electrical degrees between the emf in each coil an the next. Find by calculation the rms value of the total phase voltage developed by the winding. If the alternator has six pole and is driven at 100 rpm.
3- Determine the coil span for 3-phase, two pole alternator, the pole pitch is equal to 18 slots and the coil span factor is
A 30 MVA, 11KV, 50 Hz, star-connected three-phase alternator has an effective armature resistance per phase = 0.020 and synchronous reactance per phase = 2.252. Find the % regulation for a power factor of 0.707 lagging. What is the load angle of the alternator under this condition?
If a 50-turn transformer winding has a 120-V rms applied voltage, and if the peak coupling flux is 20 mWb, find the frequency of the applied voltage.