A 110 MVA 50 kV three phase generator has a subtransient reactance of 12%. The generator supplies one motor over a transmission line having transformers atboth ends as shown in Fig. The motor have rated input of 100 MVA 28 kV with 11% subtransient reactance. The rating of the sending end transformer, Ty is 80MVA, 35 kV / 200 kV (A-Y) with leakage reactance of 18% Transformer T2 at the receiving end has 60 MVA 15 KV/200 KV (A - Y). The leakage reactance of T2and is 16%. Series impedance of the 40 km line is 100 ohms. Draw the reactance diagram with all reactance marked in p.u. Choose 110 MVA and 35 kV as thebase values.Generator TMotorZpu new of the GeneratorZsu new of the Transformer 1KV, New for Transmission LineZau new for the Transmission LineZpu new of the Transformer 2KV, New for MotorZpu new for the Motorwin

Generator Capacity=110MVA Voltage rating=50kV Sub transient Reactance=12%=0.12pu Motor…

Answered: Motor Generator

Engineering

Electrical Engineering

Motor Generator

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 3.54P: An infinite bus, which is a constant voltage source, is connected to the primary of the...

See similar textbooks

Related questions

Q: When slip of a three phase induction machine becomes negative, it will be functioning as a motor.…

Q: ) What is a compound DC generator? a) a generator which utilizes a shunt or a series field b) a…

A: The explanation to both questions are as follows.

Q: There may be more than one answe

A: Basically electric generator is a device that converts mechanical energy into electrical energy.…

Q: Question: In Dc chopper,the input voltage waveform is and the output voltage waveform is Option 1:…

A: In this question, choose the correct options What is input voltage waveform and what is output…

Q: Wind turbines which are erected in the large body of water are called O a. Offshore wind turbines O…

A: find the explanation below

Q: What causes sparking at the brushes

A: In this question, we need to discuss about the cause of the sparking at the brushes.

Q: Assume that the field current of the generator in Problem 1 is adjusted to achieve rated voltage…

A: Given parameters isRated voltage (13.8kV)

Q: "A 3-phase, 23 kv, 60 Hz synchronous generator is connected in star and its neutral point is earthed…

A: As per the guidelines we need to solve only first three sub part of given question. we need to…

Q: 3. When a major fault occurs, in order to stabilize the power system, the system immediately uses .…

Q: A motor generator set used for providing variable frequency AC supply consist of a three-phase,…

A: Given- A motor-generator set- 3 phase, 10 pole synchronous motor, 24-pole, 3 phase synchronous…

Q: As the torque on synchronous motor increases, the motor speed O a reduces O b. remains constant Oc…

A: Synchronous motor speed = synchronous speed =…

Q: where do we use single phase motor with timer and contactor

A: To use single phase motor with timer and contactor it depends upon the application where this will…

Q: The standard practice of synchronous generator construction now a days is to have Rotating field O…

A: The objective is to determine the correct form of construction for the alternator.

Q: What is the minimum size of copper feeder conductor of TW insulation for a 5 hp, single phase,…

A: 1st motor ratings :-single phase motor Horse power = 5 HPVoltage = 240 V 2 nd motor ratings :-single…

Q: is the minimum operational speed of the wind turbine maximum speed O cut out speed rated speed cut…

A: Choose the correct option Minimum speed of the wind is called?

Q: Voltage control or regulation in a synchronous generator... a) Is measured in volt/s b) Has a…

A: Voltage control or regulation in a synchronous generator. Which option is correct?

Concept explainers

Speed control of motor

Speed control by DC motor-speed controller is required to realize variable speed drive. Whenever a motor drives a particular load, it is called drive, and variable speed drive refers to a load requiring variable speed. All this is obtained by a DC motor speed controller.

Question

A 110 MVA 50 kV three phase generator has a subtransient reactance of 12%. The generator supplies one motor over a transmission line having transformers at
both ends as shown in Fig. The motor have rated input of 100 MVA 28 kV with 11% subtransient reactance. The rating of the sending end transformer, Ty is 80
MVA, 35 kV / 200 kV (A-Y) with leakage reactance of 18% Transformer T2 at the receiving end has 60 MVA 15 KV/200 KV (A - Y). The leakage reactance of T2
and is 16%. Series impedance of the 40 km line is 100 ohms. Draw the reactance diagram with all reactance marked in p.u. Choose 110 MVA and 35 kV as the
base values.
Generator T
Motor
Zpu new of the Generator
Zsu new of the Transformer 1
KV, New for Transmission Line
Zau new for the Transmission Line
Zpu new of the Transformer 2
KV, New for Motor
Zpu new for the Motor
win

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1 Given-

Step 2

Step 3 Solution

Step 4

Step 5

Step by step

Solved in 5 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.

Similar questions

An infinite bus, which is a constant voltage source, is connected to the primary of the three-winding transformer of Problem 3.53. A 7.5-MVA,13.2-kV synchronous motor with a sub transient reactance of 0.2 per unit is connected to the transformer secondary. A5-MW,2.3-kV three-phase resistive load is connected to the tertiary Choosing a base of 66 kV and 15 MVA in the primary, draw the impedance diagram of the system showing per-unit impedances. Neglect transformer exciting current, phase shifts, and all resistances except the resistive load.
The ratings of a three-phase three-winding transformer are Primary(1): Y connected 66kV,15MVA Secondary (2): Y connected, 13.2kV,10MVA Tertiary (3): A connected, 2.3kV,5MVA Neglecting winding resistances and exciting current, the per-unit leakage reactances are X12=0.08 on a 15-MVA,66-kV base X13=0.10 on a 15-MVA,66-kV base X23=0.09 on a 10-MVA,13.2-kV base (a) Determine the per-unit reactances X1,X2,X3 of the equivalent circuit on a 15-MVA,66-kV base at the primary terminals. (b) Purely resistive loads of 7.5 MW at 13.2 kV and 5 MW at 2.3kV are connected to the secondary and tertiary sides of the transformer, respectively. Draw the per- unit impedance diagram, showing the per-unit impedances on a 15-MVA,66-kV base at the primary terminals.
Consider Figure 3.4. For an ideal phase-shifting transformer, the imda nce is unchanged when it is referred from one side to the other. (a) True (b) False
A 23/230-kV step-up transformer feeds a three-phase transmission line, which in turn supplies a 150-MVA,0.8 lagging power factor load through a step-down 230/23-kV transformer. The impedance of the line and transformers at 230kVis18+j60. Determine the tap setting for each transformer to maintain the voltage at the load at 23 kV.
Consider the three single-phase two-winding transformers shown in Figure 3.37. The high-voltage windings are connected in Y. (a) For the low-voltage side, connect the windings in , place the polarity marks, and label the terminals a, b, and c in accordance with the American standard. (b) Relabel the terminals a, b, and c such that VAN is 90 out of phase with Va for positive sequence.
A single-phase, 50-kVA,2400/240-V,60-Hz distribution transformer has the following parameters: Resistance of the 2400-V winding: R1=0.75 Resistance of the 240-V winding: R2=0.0075 Leakage reactance of the 2400-V winding: X1=1.0 Leakage reactance of the 240-V winding: X2=0.01 Exciting admittance on the 240-V side =0.003j0.02S (a) Draw the equivalent circuit referred to the high-voltage side of the transformer. (b) Draw the equivalent circuit referred to the low-voltage side of the transformer. Show the numerical values of impedances on the equivalent circuits.
Reconsider Problem 3.64 with the change that now Tb includes both a transformer of the same turns ratio as Ta and a regulating transformer with a 4 phase shift. On the base of Ta, the impedance of the two comp onents of Tb is jO.1 per unit. Determine the complex power in per unit transmitted to the load through each transformer. Comment on how the transformers share the real and reactive pors.
A two-winding single-phase transformer rated 60kVA,240/1200V,60Hz, has an efficiency of 0.96 when operated at rated load, 0.8 power factor lagging. This transformer is to be utilized as a 1440/1200-V step-down autotransformer in a power distribution system. (a) Find the permissible kVA rating of the autotransformer if the winding currents and voltages are not to exceed the ratings as a two-winding transformer. Assume an ideal transformer. (b) Determine the efficiency of the autotransformer with the kVA loading of part (a) and 0.8 power factor leading.
An ideal transformer has no real or reactive power loss. (a) True (b) False
A bank of three single-phase transformers, each rated 30MVA,38.1/3.81kV, are connected in Y- with a balanced load of three 1, Y-connected resistors. Choosing a base of 90MVA,66kV for the high-voltage side of the three-phase transformer. spify the base for the low-voltage side. Compute the per-unit resistance of the load on the base for the low-voltage side. Also, determine the load resistance in ohms referred to the high-voltage side and the per-unit value on the chosen base.
Three single-phase transformers, each rated 10MVA,66.4/12.5kV,60Hz, with an equivalent series reactance of 0.1 per unit divided equally between primary and secondary, are connected in a three-phase bank. The high-voltage windings are V-connected and their terminals are directly connected to a 115-kV three-phase bus. The secondary terminals are all shorted together. Find the currents entering the high-voltage terminals and leaving the low-voltage terminals if the low-voltage windings are (a) Y-connected and (b) - connected.
For the transformer in Problem 3.10. The open-circuit test with 11.5 kV applied results in a power input of 65 kW and a current of 30 A. Compute the values for GcandBm in siemens referred to the high-voltage winding. Compute the efficiency of the transformer for a load of 10 MW at 0.8 p.f. lagging at rated voltage.