Design and Analysis of IEEE 33-Bus System Power Distribution Network

This project focuses on designing the power distribution network of the IEEE 33-bus system using Digsilent's Powerfactory software. The design includes load flow calculations to determine apparent, real, and reactive power, along with line losses. The base substation voltage is 12.66 kV with a 10 MVA rating. The system integrates solar PV panels and wind generators at different buses, with bus 1 serving as the main substation. The report details the Powerfactory design, including resistance and reactance values for lines, and the integration of PV and wind generators with appropriate ratings and scaling factors. The model replicates the provided network, enabling load flow and short circuit calculations through simulation at a specified nominal voltage level.

Running head: Power Systems 1
Power Systems 1
Name of the Student
Name of the University
Author Note

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Executive summary:
The objective of this project is to design the total power distribution network of the
IEEE 33-bus system using the Powerfactory software which is provided by Digsilent.
Additionally, it is required to produce the load flow calculations and then to find the
apparent, real and reactive power and the line losses in individual lines. As given in the
question substation voltage of the base is 12.66 kV and the volt-ampere rating of the base is
about 10 MVA. Also, different numbers of solar PV panels and wind generators are
connected to the different numbers of busses in the system. The bus 1 is considered as the
main substation bus and the voltage is distributed to different busses from the bus 1.
Introduction:
As given in the figure below the different busses are drawn using the Powerfactory
software and their corresponding resistances and the reactance values are entered in those
busses and lines (Das, 2016). The apparent, real and reactive powers are automatically
calculated in Powerfactory by the impedance values provided in the lines. The IEEE 33-bus
grid is depicted in the following figure below (Biswas & GH, 2018).

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Project design and calculation:
The equivalent grid network that is given in the question is designed in the Powerfactory as
given below.
Powerfactory Design of IEEE 33-bus network
The reactance and resistances are included to every line in the Powerfactory design under the
new line type of project as specified in the Table 1.

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Line parameter interface in Powerfactory
Also, in the system there are 3 PV generators of 400 kVA ratings and 4 PV distributed
generators of 500 kVA rating attached with their corresponding bus number as given in the
question. The composition of loads is made in such away that the active and the reactive
power consumption in the total system are about 3.715 Mega Watts and 2.3 MVA
respectively (Özbay, Öncü & Kesler, 2017). The different rating in MVA of the solar
photovoltaics and generators are given below.

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Wind generator interface in Powerfactory
PV system interface in Powerfactory
Now, the model has been designed and the Photo voltaic loads and the loads attached with
the wind generators are designed with appropriate scaling factor as provided below.

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Conclusion and Recommendations:
Thus, it can be concluded that almost every parameters of the design for the IEEE 33-
bus network have been appropriately provided with the Photo voltaic generators, wind
generators and for the busses and lines connected with it. The provided network model in the
question is very much equivalent to the network model constructed in Powerfactory which is
provided in the above figure. The load flow and the short circuit calculation can be calculated
by simulating the model with a certain nominal voltage level which must have some
minimum value calculated from the overall voltage of the system.

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References:
Biswas, A., & G.H, M. (2018). A study of Power Quality issues in IEEE 33 bus system and
its mitigation using DSTATCOM [Ebook].
Das, J. (2016). Power System Analysis. Baton Rouge: CRC Press.
Özbay, H., Öncü, S., & Kesler, M. (2017). SMC-DPC based active and reactive power
control of grid-tied three phase inverter for PV systems. International Journal of
Hydrogen Energy, 42(28), 17713-17722. doi: 10.1016/j.ijhydene.2017.04.020