Carry Out the Load Glow Analysis for Two Loading Conditions - Engineering Assignment Help

Assignment Task:

Task:

1. Procedure

1. Before you run MATLAB package, create a single ‘Temp WorkSpace’ folder in your U drive. This folder will hold the library and network files that you create. Before you logout, make sure to copy (and backup) all your files (saved in the ‘Temp WorkSpace’ folder).
2. Run the MATLAB package from the Start menu and choose User Name as student and password as student.

The single-line diagram of a power grid is depicted by Figure 1. The data for the grid are given in the figure.

Assume an MVA base of 100 and base voltage of 13.2KV; also assume the input reactance of local power grid is 10% based on the transformer T₁ .

The input reactance of all the sources is 7% with a base same as their rating.

The system data are:

1. Transformer T₁: 20 MVA, 33/13.2KV, and 10% reactance
2. Transformer T₂: 20 MVA, 13.2/ 3.3 KV, and 12% reactance
3. Transformer T₃: 5 MVA, 3.3/ 460 V, and 6.5% reactance
4. Transformer T_{4 ,} T₅ and T₆ : 2 MVA, 3.3/ 460 V, and 6.5% reactance
5. Transformer T₇: 5 MVA, 3.3/ 460 V, and 6% reactance

Transmission line impedance is given in Table 1.

Make any necessary approximations and assumptions required to simplify the design and state any assumption made.

The local loads are 1 MVA at 0.85 power factor lagging.

Develop the following:

1. Per unit model for power flow studies
2. Per unit model for short-circuit studies.

Table 1: Transmission line data

Load Flow Analysis

Carry out the load flow analysis for two loading conditions at the far end of the 13.2 kV feeder: 6.0 MW, representing peak demand and 0.5 MW to represent off peak demand.

3. Choose Load Flow and perform the load flow analysis. During running of the program, warnings may be displayed, as some values of the network components are not entered. Accept all the default values suggested.
4. Calculate or draw figures for the following variables:

(i)  Busbar:   

Voltage (p.u.), Voltage (kV), Voltage angle (^o) and Three Phase Fault level (MVA).

         (ii)  Line

         Real power (MW)     and     Reactive power (MVAr).

         (iii)  For Cable, Transformer and Shunt, select the same as in (ii).

5. Comment on the results obtained with regard to the flow of active and reactive power, voltage profiles and fault levels at different parts of the system for the two loading conditions.

Unbalanced fault calculations

Use 6 MW load at the far end of the 13.2 kV feeder.

6.  Carry out unbalanced fault calculations, as outlined below:

1. Select a solid single phase to earth fault on Bus 17 and Bus 13 and run the program. Monitor and print the fault current and the voltages (magnitude and angle) of the three phases.
2. Repeat section (4.6 i) for a solid phase to phase fault on Bus 4.

7.  For a solid earth fault on phase R conductor at Bus 4, calculate (using analytical procedure):

1. the current fed into the fault (in p.u. and in kA) and
2. the voltages of the healthy phases at Bus 4.

The above Engineering Assignment has been solved by our  Engineering Assignment  Experts at My Uni Paper. Our Assignment Writing Experts are efficient to provide a fresh solution to this question. We are serving more than 10000+ Students in Australia, UK & US by helping them to score HD in their academics. Our experts are well trained to follow all marking rubrics & referencing style.

Be it a used or new solution, the quality of the work submitted by our assignment experts remains unhampered. You may continue to expect the same or even better quality with the used and new assignment solution files respectively. There’s one thing to be noticed that you could choose one between the two and acquire considered worthy of the highest distinction.