An Electrical engineer is asked by a client to prepare a technical specification on specific items connected with a project. Hence, the engineer is requested to prepare the technical specification of the following: PROJECT: A Subdivision Development Lot AREA; 2 Hectares LOCATION: Brgy. Kanlurang Mavao, Lucena City Philippines. 1. Technical specification of fuse cutout 2. Technical specification of transformer 3. Technical specification of generator 4. Technical specification of lighting arrester

An Electrical engineer is asked by a client to prepare a technical specification on specific items connected with a project. Hence, the engineer is requested to prepare the technical specification of the following: PROJECT: A Subdivision Development Lot AREA; 2 Hectares LOCATION: Brgy. Kanlurang Mavao, Lucena City Philippines. 1. Technical specification of fuse cutout 2. Technical specification of transformer 3. Technical specification of generator 4. Technical specification of lighting arrester

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 3.47P: Consider the oneline diagram shown in Figure 3.40. The three-phase transformer bank is made up of...

See similar textbooks

Similar questions

Q3: A synchronous generator with peak generated voltage Vg which is connected to a lighting arrester through a transmission line with characteristics impedance ZL and the lighting arrester equal to the one half of ZL. Let the generator characteristic impedance be one third of ZL. Determine:(i) Calculate the current in the lighting arrester, (ii) Calculate the voltage in lighting arrester, and (iii) the value of lighting arrester resistance must be connected to transfer maximum power?
Q3: A synchronous generator with peak generated voltage Vg which is connected to a lighting arrester through a transmission line with characteristics impedance ZL and the lighting arrester equal to the one half of ZL. Let the generator characteristic impedance be one third of Z. Determine:(1) Calculate the current in the lighting arrester, (ii) Calculate the voltage in lighting arrester, and (iii) the value of lighting arrester resistance must be connected to transfer maximum power?
2.2. The figure below shows a radial transmission system with a generator having a per-unit voltage of 1.3 at an angle of 9 degree p.u. The load demand is 47MW at a power factor of 0.96lagging. Use the nameplate values of Transformer 2 as base values and calculate the following: Correct answers to three decimal places : 25..Per unit impedance of transformer and it's angle 26.Per unit voltage of the line and its angle 27.Per unit impedance of the line and its angle. And Reactance of the transmission line when the load consumes full-load (Ω).
With the same transformer banks as in Problem 3.47, Figure 3.41 shows the oneline diagram of a generator, a step-up transformer bank, a transmission line, a stepown transformer bank, and an impedan load. The generator terminal voltage is 15 kV (line-to-line). (a) Draw the per-phase equivalent circuit, aounting for phase shifts for positive-sequence operation. (b) By choosing the line-to-neutral generator terminal voltage as the reference, determine the magnitudes of the generator current, transmiss ion-line current, load current, and line-to-line load voltage. Also, find the three-phase complex power delivered to the load.
Consider the oneline diagram shown in Figure 3.40. The three-phase transformer bank is made up of three identical single-phase transformers, each specified by X1=0.24 (on the low-voltage side), negligible resistance and magnetizing current, and turns ratio =N2/N1=10. The transformer bank is delivering 100 MW at 0.8 p.f. lagging to a substation bus whose voltage is 230 kV. (a) Determine the primary current magnitude, primary voltage (line-to-line) magnitude, and the three-phase complex power supplied by the generator. Choose the line-to-neutral voltage at the bus, Va as the reference Account for the phase shift, and assume positive-sequence operation. (b) Find the phase shift between the primary and secondary voltages.
In developing per-unit circuits of systems such as the one shown in Figure 3.10. when moving across a transformer, the voltage base is changed in proportion to the transformer voltage ratings. (a) True (b) False
Here is a single phase transformer, 15 kVA, 15000/380 V, 50 Hz has Ze-0.02+j0.05 perunit, R. 50 perunit, and Xm =30 perunit, (per unit = actual value/base value), for scaling of the problem. (pu). A) Compute and draw the equivalent circuit components in Qs referred to the low-voltage side, B) Low voltage side is connected to a load of 4L 90° (lagging) and HV side is supplied by 15KV, compute voltage drop on the load V2 and voltage regulation VR.
2) A single-phase power transformer of 150 MVA, 15/200 KV has a resistance in per unit of 1.1% and reactance per unit of 4.5%. The magnetizing impedance is j95 per unit. a) Find the equivalent circuit of the transformer referred to the low side voltage. b) Calculate the voltage regulation of the transformer in nominal conditions and f.p. 0.9 behind.
Q2. (a) Explain what is per unit system? What are the advantages of per-unit computations? Prove for the problem given in part (b) that PU impedance of the circuit element connected by the transformers expressed on a proper base will be same if it is referred to either side of a transformer.
A single phase transformer has a voltage transformation ratio of 0.4. The resistance and reactance of memory winding are 80 and 180 respectively. While the resistance and reactance of the secondary winding are 1.50 and 2.60 respectively. So Find (1) Resistance and reactance of the secondary referred to the primary, (2) the resistance and reactance of the primary referred to the secondary, (3) the resistance, reactance and impedance referred to the primary of the whole transformer, and (4) the resistance, reactance and impedance referred to the secondary of the whole transformer.
Describe the principles and benefits of High Voltage Direct Current (HVDC) transmission systems, and when are they preferred over traditional AC transmission systems?
Transformer design. Please ignore the frequency response part. Help with transformer design as much as possible. Make it a word document