Single-Machine Frequency Model and Parameter Identification for Inertial Constraints in Unit Commitment

In recent years, the need for generation mixes that consider inertial constraints in unit commitment (UC) has increased because inertia of these systems decreased with use renewable energy. circumstances, single-machine models can calculate minimum frequency and rate change (RoCoF) at a high speed terms characteristics changes mix, order to identify satisfy constraints. This study proposed methods determine parameters reduced response (RFR) model, which is model considers nonlinearity caused by restrictions on generator’s output power, apply UC. The RFR include various forms governor nonlinear power according scales contingencies, system inertia, load through parameters. From simulations real systems, it was observed determined achieved considerable accuracy calculating RoCoF model.