Procedure for Contingency Analysis -

STEP 1: Enter the number of buses in a power system. Then, click on the "Generate Bus Table" and fill the details of buses i.e., Bus Type (Slack Bus = 1, PV Bus = 2, PQ Bus = 3), Voltage magnitude (pu), Angle (degree) , Pgen (pu), Pload (pu).
Note: Bus data for two standard IEEE bus systems are provided- (I) IEEE 5-Bus system and (II) IEEE 14-Bus system. To access the data click on the button of Autofill Bus Data: IEEE 5-Bus or Autofill Bus Data: IEEE 14-Bus. Also, make sure that the entered data is accurate.

STEP 2: Enter the number of lines in a power system. Then, click on the "Generate Line Table" and fill the details of lines i.e., From Bus, To Bus, X (pu), line limit (pu).
Note: Line data for two standard IEEE bus systems are provided- (I) IEEE 5-Bus system and (II) IEEE 14-Bus system. To access the data click on the button of Autofill Line Data: IEEE 5-Bus or Autofill Line Data: IEEE 14-Bus.

STEP 3: Click on "Calculate B-Bus matrix for DC (Linear) Power Flow". The values of the B-Bus matrix will be displayed.

STEP 4: Click on "Run DC (Linear) Power Flow: Base Case". Buses data: Bus Type, Voltage magnitude (pu), Angle (degree), Pgen (pu), Pload (pu), Line flows data: Pline (pu), will be displayed.

STEP 5: Click on "Run Contingency Analysis: Line Outages". Results for line outage contingency analysis will be displayed. The number of overloaded transmission lines will be displayed in red colour.

STEP 6: Click on "Run Contingency Analysis: Generator Outage". Results for bus voltage angle and generator output as well as line flows will be displayed. The number of overloaded transmission lines will be displayed in red colour.