Patents by Inventor Haruo Oguchi
Haruo Oguchi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20220337067Abstract: A power control apparatus of an embodiment controls power to be output to a power system from a power station including a power generation unit, and a power storage unit. The power control apparatus includes a power generation control unit, a power storage control unit, and a cooperation control unit. The power generation control unit controls an output of the power generation unit based on a power generation set value. The power storage control unit controls an output of the power storage unit based on a power storage set value. The cooperation control unit outputs the power generation set value to the power generation control unit and outputs the power storage set value to the power storage control unit based on a power demand amount of the power system so as to make the power generation unit and the power storage unit operate in a cooperative manner.Type: ApplicationFiled: December 27, 2021Publication date: October 20, 2022Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Atsushi MATSUZAKI, Keiko SHIMIZU, Haruo OGUCHI, Akinori TANI, Takahisa HOSHINO, Kojiro TADA
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Patent number: 8511093Abstract: A power generation plant comprises a plant control device (600) including two switchable control modes, i.e., a gas-turbine load control mode (7a) and a steam-turbine load control mode (7b). When the control is performed with the gas-turbine load control mode (7a), a fuel valve (104a) is controlled based on a load of a whole generator set (100), and a steam regulating valve (203a) is controlled based on an exhaust pressure of a steam turbine (202a). When the control is performed with the steam-turbine load control mode (7b), the fuel valve (104a) is controlled such that a valve opening degree thereof is maintained constant, and the steam regulating valve (203a) is controlled based on a load of the whole generator set (100).Type: GrantFiled: September 18, 2008Date of Patent: August 20, 2013Assignee: Kabushiki Kaisha ToshibaInventors: Haruo Oguchi, Toyohiro Akebi, Takeshi Koi, Takahiro Moribe
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Publication number: 20100275610Abstract: A power generation plant comprises a plant control device (600) including two switchable control modes, i.e., a gas-turbine load control mode (7a) and a steam-turbine load control mode (7b). When the control is performed with the gas-turbine load control mode (7a), a fuel valve (104a) is controlled based on a load of a whole generator set (100), and a steam regulating valve (203a) is controlled based on an exhaust pressure of a steam turbine (202a). When the control is performed with the steam-turbine load control mode (7b), the fuel valve (104a) is controlled such that a valve opening degree thereof is maintained constant, and the steam regulating valve (203a) is controlled based on a load of the whole generator set (100).Type: ApplicationFiled: September 19, 2008Publication date: November 4, 2010Inventors: Haruo Oguchi, Toyohiro Akebi, Takeshi Koi, Takahiro Moribe
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Patent number: 6530207Abstract: A gas turbine system comprises an alarm signal calculation circuit, a shutdown calculation circuit and a flashback-error signal prevention calculation circuit. The alarm signal calculation circuit, the shutdown calculation circuit and the flashback-error signal prevention calculation circuit are integrated in a combustion monitoring device for monitoring combustion condition of combustion gas in a gas turbine-combustor.Type: GrantFiled: August 29, 2001Date of Patent: March 11, 2003Assignees: Kabushiki Kaisha Toshiba, Toshiba Engineering CorporationInventors: Masayuki Tobo, Haruo Oguchi, Hajime Yasui, Akira Hasegawa
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Publication number: 20020029557Abstract: A gas turbine system comprises an alarm signal calculation circuit, a shutdown calculation circuit and a flashback-error signal prevention calculation circuit. The alarm signal calculation circuit, the shutdown calculation circuit and the flashback-error signal prevention calculation circuit are integrated in a combustion monitoring device for monitoring combustion condition of combustion gas in a gas turbine-combustor.Type: ApplicationFiled: August 29, 2001Publication date: March 14, 2002Applicant: KABUSHIKI KAISHA TOSHIBA; Minato-Ku, JapanInventors: Masayuki Tobo, Haruo Oguchi, Hajime Yasui, Akira Hasegawa
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Patent number: 5855111Abstract: A power generation plant possessing a gas turbine includes a nitrogen oxide removal apparatus for injecting a reducing material such as ammonia into exhaust gas from the gas turbine to reduce NOx emission under a predetermined level. To a feedback control system for estimating such an amount of the reducing material to be injected that a measured NOx amount at an outlet of the nitrogen oxide removal apparatus will get toward a NOx setpoint there is added a feedback control system for estimating an injection amount of the reducing material required for a NOx flow rate at an inlet of the nitrogen oxide removal apparatus based upon a mole ratio of the reducing material to the NOx. The measured NOx at the inlet of the nitrogen oxide removal apparatus is corrected based upon the combustion conditions of the gas turbine unit. NOx setpoint and the mole ratio are estimated based upon the operating conditions of a plant related to nitrogen oxide removal efficiency.Type: GrantFiled: September 11, 1996Date of Patent: January 5, 1999Assignees: Kabushiki Kaisha Toshiba, Toshiba Engineering Co.Inventors: Haruo Oguchi, Shirou Hino, Toshie Kataoka
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Patent number: 5813212Abstract: A power generation plant possessing a gas turbine includes a nitrogen oxide removal apparatus for injecting a reducing material such as ammonia into exhaust gas from the gas turbine to reduce NOx emission under a predetermined level. To a feedback control system for estimating such an amount of the reducing material to be injected that a measured NOx amount at an outlet of the nitrogen oxide removal apparatus will get toward a NOx setpoint there is added a feedback control system for estimating an injection amount of the reducing material required for a NOx flow rate at an inlet of the nitrogen oxide removal apparatus based upon a mole ratio of the reducing material to the NOx. The measured NOx at the inlet of the nitrogen oxide removal apparatus is corrected based upon the combustion conditions of the gas turbine unit. NOx setpoint and the mole ratio are estimated based upon the operating conditions of a plant related to nitrogen oxide removal efficiency.Type: GrantFiled: September 22, 1997Date of Patent: September 29, 1998Assignees: Kabushiki Kaisha Toshiba, Toshiba Engineering Co.Inventors: Haruo Oguchi, Shirou Hino, Toshie Kataoka
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Patent number: 5584172Abstract: A power generation plant possessing a gas turbine includes a nitrogen oxide removal apparatus for injecting a reducing material such as ammonia into exhaust gas from the gas turbine to reduce NOx emission under a predetermined level. To a feedback control system for estimating such an amount of the reducing material to be injected that a measured NOx amount at an outlet of the nitrogen oxide removal apparatus will get toward a NOx setpoint there is added a feedback control system for estimating an injection amount of the reducing material required for a NOx flow rate at an inlet of the nitrogen oxide removal apparatus based upon a mole ratio of the reducing material to the NOx. The measured NOx at the inlet of the nitrogen oxide removal apparatus is corrected based upon the combustion conditions of the gas turbine unit. NOx setpoint and the mole ratio are estimated based upon the operating conditions of a plant related to nitrogen oxide removal efficiency.Type: GrantFiled: December 23, 1994Date of Patent: December 17, 1996Assignees: Kabushiki Kaisha Toshiba, Toshiba Engineering Co.Inventors: Haruo Oguchi, Shirou Hino, Toshie Kataoka