Risk-based optimal TTC evaluation with transient stability constraints

This paper proposes a risk-based approach for assessment of optimal total transfer capacity (TTC) with transient stability constraints. Probabilities and costs of contingencies are simultaneously considered in building up the TTC model. Expectation rule is adopted for the TTC decision making process. Because no risk threshold value is utilized in the TTC assessment, the TTC solution is optimal between the economics and security of system operation. Case study on the 10-generator New England test power system is reported to validate the approach.