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The Performance of a Power System & ERACS Model Engineering Assignment Help

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Added on: 2022-08-20 00:00:00
Order Code: 12_21_22766_369
Question Task Id: 391957
Assignment Task
    

Preliminary

The performance of a power system depends on the nature and profile of the connected load. For heavy or light loads, the voltage profile of the transmission and distribution lines is hugely affected. In many practical cases, the power system is more efficient with the use of compensators that can be connected in series or in shunt with the lines; its location in the power grid and type are topics of research projects. The aim of this coursework is to build the understanding of the need and impacts of compensation techniques within a focussed part of a power transmission system.A 275-kV transmission line (TL) is to be studied with regard to power flow and compensation. The line may be assumed to be fed from an ‘infinite’ generator (the Grid) and terminated with a lumped load with fixed real and reactive power.

System Bases:

2000 MVA, 50-Hz, 275-kV

Infinite Generator (Grid):

275-kV, 50-Hz, 3-ph, 100,000 MVA Fault level, X/R ratio =10, Voltage set at 1.0 p.u.

Busbars:

275-kV, 50-Hz, 100,000 MVA Fault level, voltage tolerance ±10%.

Transmission Line:

275-kV, 3-ph, 50-Hz, variable TL length in km, R = 8.15 m? / km, L = 0.52 mH / km, C= 0.008 µF / km

The following system data applie
 

  • Create and run load flow analysis of a model of the above system in ERACS (pay extra attention to parameters to be considered). Outline any assumptions made in representing the system, then;
  • Describe Ferranti phenomenon and verify it for a long transmission line of length of your own choice, closely observe the load-end voltage when the line is not loaded or lightly loaded.
  • Study the impacts of lagging power factor loads (of different power factors and load magnitudes) connected to a long-line on both the line efficiency and voltage regulation.
  • Study the impacts of leading power factor loads (of different power factor and load magnitudes) connected to the same long-line studied in Section (b) above, on both the line efficiency and voltage regulation.
  • dBased on the results obtained, show your understanding about the differences between lagging and leading power factor loads simulated in (b) and (c) above.

 


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  • Uploaded By : Rupak Ranjan
  • Posted on : December 27th, 2019
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