A Novel Unit Commitment Method Considering Various Operation Constraints

This paper presents a novel unit commitment method in which some intricate constraints are considered, such as available transfer capability limitation (ATCL) of both lines and interfaces, network loss effects, and units' ramp rates. The network security constraints are checked by DC power flow. The key technique of the method is the combination of dynamic programming for one tentative running unit with economic dispatch for fulfilled load (EDFL). The distinct features of the method are monotonous convergence, considering more constraints and less computational requirements. Comparison of the proposed method with the Lagrangian relaxation approach demonstrates the effectiveness and the potential benefits of the proposed method for power system operation.