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Knowledge Base

Adding Multiple Generators and Performing Contingency Analysis

Auxiliary File: NewGeneratorsCTG.aux
PowerWorld Case: B7OPF.pwb
PowerWorld Oneline: B7OPF.pwd
Output Files: NewGeneratorContingencyReport.txt
(Right-click on the above files and select Save Target As to save them to your computer.)

In this example we add two generators to the case and then solve the power flow, run contingency analysis and produce a contingency analysis report.

There are two scripts in this example:

  • Edit changes the mode to edit so that we can add generators.
  • DoCalculations solves the power flow, runs contingency analysis and produces an automated contingency analysis report.

There are also two data sections:

  • AddGen contains the data for the two generators that we add at buses 3 and 5.
  • AddCTG contains a list of contingencies for contingency analysis.

NewGeneratorsCTG.aux:

//This script adds two small generators and then performs
//contingency analysis.
//It is written for a seven-bus case.
SCRIPT Edit
{
//Before we can add generators we must be in edit mode!
EnterMode(Edit);
}
DATA AddGen(GEN, [busnum, GenID, GENAGCAble, GenParFac, GenFixedCost, GenFuelCost,
GenMWMin, GenMWMax, GenEnforceMWLimits])
{
//Add two new generators. PowerWorld will ask you if you want to
//create them. Say Yes.
//
//Bus Gen Gen Participation Fixed Fuel Gen Gen Enforce
//Num ID AGC? Factor Cost Cost min MW max MW Limits?
//——————————————————————
3 2 YES 1 1 2 5 50 YES
5 2 YES 1 1 2 1 30 YES
}

DATA addCTG(Contingency, [CTGlabel, CTGskip])
//Enter data for the contigencies
{
//PowerWorld will ask if you want to create the contingencies.
//Say Yes.
//Contingency Label Skip?
//——————————–
“Contingencies” NO
<SUBDATA CTGElement>
//Action Model Criteria Status
//Action Model Criteria Status
//—————————————————-
“GEN 1 1 OPEN” “” ALWAYS
“BRANCH 1 3 1 OPEN” “” ALWAYS
“GEN 2 1 OPEN” “” ALWAYS
</SUBDATA>
}

SCRIPT DoCalculations
{
//Solve the power flow, run contingency analysis,
//and create a report.
//Enter PowerFlow mode.
Entermode(PowerFlow);
//Solve the power flow.
SolvePowerFlow;
//Enter Contingency mode.
Entermode(Contingency);
//Solve the contingencies we entered earlier.
CTGSolve(“Contingencies”);
//Save an automatic contingency report in “NewGeneratorContingencyReport”
CTGProduceReport(“NewGeneratorContingencyReport”);
}

 

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June 29, 2012