Contingency Results: Violation CTG Injection Sensitivities

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These contingency results are available on the Contingency Analysis dialog under the Contingency Analysis: Results tab. Contingency injection shift factors and/or the MW effect are of changing generation and load injection for individual contingency violations are calculated according to the Injection Sensitivities options. These results can be used to determine potential generation and load changes needed to reduce loading on violated branches and interfaces.

 

The following fields are available:

 

Injector

(Key Field) Identifying information for the generator or load for which the injection sensitivity is calculated.

Name

(Key Field) Name of the contingency under which the violation occurs and the sensitivities are calculated.

Element (file format)

(Key Field) Identifying information for the branch or interface that is the violation for which the sensitivities are calculated.

MW Inj Sensitivity

Sensitivity of the MW flow (shift factor) on the Element under the contingency to a MW injection at the Injector.

MW Range Inc

Available range on the Injector to increase injection.

MW Range Dec

Available range on the Injector to decrease injection.

MW Effect Inc

The change in MW flow on the Element under the contingency if increasing the injection of the injector by the full range to increase injection: (MW Range Inc) * (MW Inj Sensitivity)

MW Effect Dec

Th change in MW flow on the Element under the contingency if decreasing the injection of the injector by the full range to decrease injection: (MW Range Dec) * (MW Inj Sensitivity)

 

The amount of injection that can be increased or decreased for a particular injector is determine based on the MW limits for the injector. For a generator the increase in injection is the difference between the maximum MW and present MW for the generator. The decrease in generator injection is the difference between the minimum MW and the present MW. Loads typically do not have maximum and minimum MW limits specified, and they will be ignored even if they are specified. The increase in load injection will be the present output of the load. The decrease in load injection will be 0.