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Multi-Mode Operation of Combined-Cycle Gas Turbines With Increasing Wind Penetration

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3 Author(s)
Troy, N. ; Sch. of Electr., Electron., & Mech. Eng., Univ. Coll. Dublin, Dublin, Ireland ; Flynn, D. ; OMalley, M.

As power systems evolve to incorporate greater penetrations of variable renewables, the demand for flexibility within the system is increased. Combined-cycle gas turbines are traditionally considered as relatively inflexible units, but those which incorporate a steam bypass stack are capable of open-cycle operation. Facilitating these units to also operate in open-cycle mode can benefit the power system via improved system reliability, while reducing the production needed from dedicated peaking units. The utilization of the multi-mode functionality is shown to be dependent on the flexibility inherent in the system and the manner in which the system is operated.

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Power Systems, IEEE Transactions on  (Volume:27 ,  Issue: 1 )