Kabushiki Kaisha Toshiba

Toshiba Energy Systems & Solutions Corporation

Hironori Watanabe

Masayuki Tobo

Firman Bagja Juangsa

Takuji Yamasaki

Takahiro Mori

Masakazu Shirakawa

Toyohiro Akebi

Chikako Iwaki

Keiko Shimizu

Atsushi Matsuzaki

Hiromutsu Miki

Jianda Goh

Taufiq Hilal Tawab

Yusuke Fukamachi

Syuntaro Abe

In one embodiment, a thermal energy storage power plant includes a thermal accumulator to accumulate thermal energy and heat a thermal medium with the thermal energy, and a steam generator to generate steam using the thermal medium. The plant further includes a first path to convey the thermal medium from the accumulator to the generator, and a second path to convey the thermal medium from the generator to the accumulator. The plant further includes an auxiliary module provided on the first path, and a bypass path to convey the thermal medium flowing through the second path to the auxiliary module by bypassing the accumulator, wherein the auxiliary module is supplied with a first thermal medium from the accumulator via the first path, supplied with a second thermal medium from the second path via the bypass path, and supplies a third thermal medium to the generator via the first path.

Thermal energy storage power plant

A gas turbine plant including a gas turbine and a compressor is provided with a steam turbine plant including a steam turbine and a condenser, and, an exhaust heat recovery boiler. Steam from the exhaust heat recovery boiler is directly flown to the condenser of the steam turbine plant through a bypass control valve. A pressure sensor detects pressure in a turbine bypass system. A controller outputs, based on a set value from an input device and a process value from the pressure sensor, an open level instruction value to the control value so as to make the process value consistent with the set value in a predetermined sampling cycle. A corrector corrects the set value from the input device in a direction in which the open level instruction value decreases when the open level instruction value from the controller becomes a value that substantially fully opens the control valve.

Control valve control method and control device, and power generating plant utilizing same

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Yokohama, Japan

Hironori Watanabe