  This paper proposes a hybrid CCGT model for day-ahead market clearing, in
order to enhance operation flexibility of CCGTs in practice. The proposed
hybrid model, by taking benefits of combined offers on configurations and
individual PTs from MPs, can reflect physical operation features of CCGTs more
accurately. A comprehensive review on CCGT models in literature is conducted,
and their advantages and shortcomings are analyzed. The mapping relationship
between the two most investigated models, i.e., CFBM and CPBM, is then revealed
and constructed for deriving the proposed hybrid model. Tightening formulations
are further discussed for achieving better computational performance. The
proposed hybrid model is tested and compared with CFBM via an IEEE 118-bus
system and the MISO system. Results show great benefits in maintaining
operation flexibility and enhancing social welfare.
