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Faculty of Engineering and Technology
Electrical and Computer Engineering Department
Power Systems (ENEE 4403 )
“Power World Simulator Tutorial”
Prepared by: Qais Samara
Date: 3 / 12 / 201 7
Downloading and installing the program:
Click on the following link, you will be redirected to the page shown below where you can download the program and sample cases: https://www.powerworld.com/download-purchase/demo-software/simulator- 20 - glover-overbye- sarma-edition-download Note: you might need to zoom in so you can see some of the figures in this document clearly Installing the program is simple! Just keep clicking Next! you do not need to do crack or any other thing, this is a free demo software.
Once you have opened a new case you will see the following window, Maximize the case window: Lets add a grid to the background, click on options then draw grid as shown below, note that you can modify grid spacing e.g. I have selected 2x2 grid:
Building a system: inserting components
We will build the system shown below which is taken from example 6.9 in course book, data tables of the system are given below.
5. When you select “bus” a “cross cursor ( + )” will show up inside the work window, just
click once and the following window will show up:
- The data you have to insert is the bus “base voltage or nominal voltage”, and you can add a bus name
- You may need to insert other data depending on the type of the bus:
- If the bus is a slack bus, then you have to tick the “system slack bus box” and by default the voltage is 1PU and the angle is zero.
- If the bus is a voltage controlled bus (a bus to which a generator is connected), then you have to insert the bus voltage by clicking the button then the window on the next page will show up:
- The bus voltage is inserted in the indicated field shown on the figure.
- For other buses, the bus voltage is left as default and when you run the program it will calculate the bus voltage.
- If you select “display” tab in the bus options window, you can modify bus size and orientation.
- Select the data that you want to be displayed.
Second: inserting generators
- To insert a generator, go to draw tab (the same tab from where you have inserted bus) and select generator, then click on the bus you want to add a generator to, the following window will show up:
- The data you have to insert is generator MVA base only.
- If the generator is connected to a voltage controlled bus, then you have to insert real power in the “MW set point” field.
- If the generator is connected to a slack bus, then you do not have to insert the power values, leave them zero, and when you run the program it will calculate power values.
Fourth: inserting transmission line
- To insert transmission line, follow the same steps of inserting transformer after selecting transmission line from draw tab.
- When you finish drawing the transmission line, the following window will show up:
- The data you have to insert is shown in the indicated boxes in the figure above, this data is taken from tables of example 6.9.
- If transmission line per unit impedances are not give, you can calculate them using the program by clicking on “calculate impedances>” which will open the following window:
- Other transmission lines are inserted similarly.
Running the program and solving the case:
After you have finished building the system, your window should be similar to the following figure. To solve the case, first select “Run mode”, then go to “Tools” tab and select the green play button as shown below:
To show the percentage of loading on pie charts above transmission line and transformers as in the figure in the previous page right click on the pie chart and the following window will show up: tick the box show in the figure below.
You might face the problem that you run the program, but you do not see power flow arrows to solve this go to options tab and increase the animation size as shown below:
Fault analysis:
Three phase symmetrical fault:
- Fault analysis can only be performed when Simulator is in Run Mode.
- To perform a 3 - phase symmetrical fault you need to insert the sequence specific data for generators, transformers, and transmission lines.
- This data is loaded by double clicking on each component e.g. double click on a transmission line to open the “branch options” window, then select “fault info” tab as shown in the figure below:
