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1. (WO2018059798) POWER PLANT CONTROL IN COORDINATION WITH FURTHER ENERGY SOURCES, LIKE RENEWABLE ENERGY

Pub. No.:    WO/2018/059798    International Application No.:    PCT/EP2017/069440
Publication Date: Fri Apr 06 01:59:59 CEST 2018 International Filing Date: Wed Aug 02 01:59:59 CEST 2017
IPC: F01K 13/02
F01K 23/10
F02C 9/26
F02C 9/42
Applicants: SIEMENS AKTIENGESELLSCHAFT
Inventors: LUNDGREN, Sten-Inge
JAERLING, Patrik
STRÖMBERG, Lena
Title: POWER PLANT CONTROL IN COORDINATION WITH FURTHER ENERGY SOURCES, LIKE RENEWABLE ENERGY
Abstract:
The invention is directed to a method for controlling a power plant (1), the power plant (1) at least comprising a gas turbine engine (5) and a generator (3). The generator (3) is initially driven by the gas turbine engine (5) in a generator mode and the generator (3) is connectable to a power grid (2) for feeding power to the power grid (2). The method comprises the steps of reducing or switching off main fuel while supplying pilot fuel to a combustor (7) of the gas turbine engine (5), consecutive to operation in the generator mode, and maintaining the generator (3) synchronised to the power grid (2), such that the generator (3) is driven as a motor from power provided from the power grid (2). Furthermore the invention is directed to a gas turbine power plant and a combined cycle power plant to perform such a method.