SecurityConstraintSum
Class Description
Typically provided by RTO systems, constraints identified in both base case and critical contingency cases have to be transferred. A constraint has N (>=1) constraint terms. A term is represented by an instance of TerminalConstraintTerm. The constraint expression is: minValue <= c1x1 + c2x2 + .... cn*xn + k <= maxValue where:
- cn is ConstraintTerm.factor
- xn is the flow at the terminal Flow into the associated equipment is positive for the purpose of ConnectivityNode NodeConstraintTerm.
k is SecurityConstraintsLinear.resourceMW. The units of k are assumed to be same as the units of the flows, xn. The constants, cn, are dimensionless. With these conventions, cn and k are all positive for a typical constraint such as "weighted sum of generation shall be less than limit". Furthermore, cn are all 1.0 for a case such as "interface flow shall be less than limit", assuming the terminals are chosen on the importing side of the interface.
Attributes
None
Relationships
Ancestors
Descendents
No descendent classes
Associations
| Source Class | Source Cardinality | Target | Target Cardinality | Source Name | Source Assoc. Description | Target Name | Target Assoc. Description |
|---|---|---|---|---|---|---|---|
| SecurityConstraintSum | 1 | ConstraintTerm | 0..* | SecurityConstraintSum | ConstraintTerms | ||
| SecurityConstraintSum | 0..* | RTO | 0..1 | SecurityConstraintsLinear | RTO | ||
| SecurityConstraintSum | 1 | ContingencyConstraintLimit | 0..* | SecurityConstraintSum | ContingencyConstraintLimits | ||
| SecurityConstraintSum | 1 | BaseCaseConstraintLimit | 0..1 | SecurityConstraintSum | BaseCaseConstraintLimit | ||
| SecurityConstraintSum | 1 | DefaultConstraintLimit | 0..1 | SecurityConstraintSum | DefaultConstraintLimit |