Mitsubishi Heavy Industries Limited

Mitsubishi Hitachi Power Systems, Ltd.

Pebble Bed Modular Reactor (pty) Limited

Nec Corporation

Mitsubishi Power, Ltd.

Nabco Limited

Pebble Bed Modular Reactor Limited

Takashi Sonoda

Yoshifumi Iwasaki

Keisuke Yamamoto

Sosuke Nakamura

Shinichi Yoshioka

Makoto Kato

Tatsuya Iwasaki

Satoshi Uchida

Hiroshi Ogawa

Satoshi Tanimura

Minoru Matsuo

Akihiko Saito

Fuminori Fujii

Ryuji Takenaka

Shinsuke Nakamura

Makoto Kishi

Shinji Akamatsu

Naoto Tochitani

Tomoka Tanaka

Hitoi Ono

Kazuo Uematsu

Yasuyuki Ogawa

Kuniaki Aoyama

Yuichiro Kamino

Keiichi Morishita

Kazuya Higashi

Wataru Akizuki

Shoichi Harada

Hisashi Nakahara

Shintaro Kumano

Yasutoshi Ueda

Hideaki Murata

Yuichiro Kitagawa

Yasuo Fujishima

Yoshinori Hyakutake

Hiroyuki Ishida

Satoko Fujii

Koji Takaoka

Ryoichi Haga

Naohiro Sumimura

Katsuhiro Ota

Daisuke Kudo

Hidekazu Ono

Isamu Matsumi

Kozo Toyama

Masahide Umaya

Masaaki Yamasaki

Takao Hashimoto

Shouichi Nagata

Yoshiaki Tsukuda

Yoshiyuki Kita

Hikaru Katano

Shunsaku Matsumoto

Yasutsugu Takata

Satoru Kamohara

Hiromi Aota

Katsuhisa Kojima

Tetsuya Yabe

Eiki Anzawa

Yasuhiro Takashima

Yasushi Morishita

Teruo Tateishi

Akihiko Saitoh

Kunifumi Yamasaki

Toshiyuki Tajima

Junya Iwasaki

Takafumi Uda

Pradeepa Wevita

Sumio Toyofuku

Kazuma Nishizawa

Masao Terazaki

Koichiro Hirato

Kiyoshi Tarumizu

Yoko Koyanagi

Naohiro Hiraoka

Yasuyuki Komada

Sota Watanabe

Masahide Sugihara

Takayoshi Maeda

Yasunaga Kobayashi

Koji Edo

A cause estimation device includes: an acquisition unit that acquires a measurement value of a target apparatus; a likelihood calculation unit that calculates, in a case where it is assumed that events occur due to a common cause, a likelihood of an occurrence of each of the events based on the measurement value; a table storage unit that stores a cause table in which a cause of occurrence of the event and a frequency of the cause of occurrence are associated with each other for each of the plurality of events; and an estimation unit that rewrites the frequency registered in the cause table into a frequency in the case where it is assumed that the plurality of events occur due to the common cause, and estimates the cause of occurrence based on the rewritten cause table and the likelihood.

Cause estimation apparatus and cause estimation method

A state determining device determines a state of a gas turbine connected to an electric generator. The gas turbine includes a compressor that compresses intake air into compression air, a fuel supply device that supplies fuel, a combustor that mixes the compression air supplied from the compressor and the fuel supplied from the fuel supply device and combusts a resultant mixture to generate combustion gas, and a turbine that is rotated with the generated combustion gas.

State determining device, operation controlling device, gas turbine, and state determining method

A fuel control device includes a combustion temperature estimation value calculation unit that calculates a temperature estimation value when a mixture of fuel and inflow air is burned using an atmospheric condition, an opening degree command value of a valve that controls the amount of air that is mixed with the fuel and burned, and an output prediction value calculated on the basis of a fuel control signal command value used for calculation of a total fuel flow rate flowing through a plurality of fuel supply systems, a fuel distribution command value calculation unit that calculates a fuel distribution command value indicating a distribution of fuel output from the fuel supply systems based on the temperature estimation value, and outputs the fuel distribution command value, and a valve opening degree calculation unit that calculates each valve opening degree of a fuel flow rate control valve of the fuel supply systems.

Fuel control device, combustor, gas turbine, control method, and non-transitory computer-readable medium

Fuel control device, combustor, gas turbine, control method, and program

A state quantity-acquiring unit acquires values of a plurality of state quantities at a certain timing associated with an object device. A state quantity-predicting unit predicts allowable ranges of the values of the plurality of state quantities after a predetermined time has elapsed on the basis of the acquired values of the plurality of state quantities. A display information-generating unit generates display information in which a predicted-value figure which is a figure with a shape corresponding to the allowable ranges of the values of the plurality of state quantities is disposed in a coordinate space with the plurality of state quantities as axes.

State analysis apparatus, state analysis method, and program

A person watching a video shares the realism of the spot. There is provided an information processing apparatus including a video acquirer, an object information collector, a status recognizer, and a display unit. The video acquirer acquires a video from an image capturer that captures a predetermined area. The object information collector collects object information of an object included in the captured video. The status recognizer recognizes a status of the object based on the video and the object information of the object. The display unit displays the recognized status to be identifiable.

Information processing apparatus, information processing method, information processing program, and information processing system

An operation information analyzer includes: an information collection unitconfigured to collect event information on events that have occurred during operation of an apparatusincluding a plurality of devices; an information analysis unitconfigured to organize the collected event information to generate and store index values used to evaluate operation conditions of the apparatus; and an information presentation unitconfigured to present the index values stored in the information analysis unitto a user. The information analysis unitgenerates the index values for each period sectioned based on a change in an operation state of the apparatus.

Operation information analyzer

An IGV opening command value is corrected to calculate an actual opening equivalent value that indicates an approximate value of an actual opening. A temperature estimation value, for a case where a mixture of fuel and in-flowing air is combusted, is calculated using the actual opening equivalent value, atmospheric conditions, and an output from a gas turbine. A fuel distribution command value that indicates distribution of fuel output from a plurality of fuel supply systems is calculated on the basis of the temperature estimation value. The fuel distribution command value and a fuel control signal command value that indicates the total flow rate of fuel to be output to the plurality of fuel supply systems are acquired, and respective valve openings of fuel flow rate regulating valves of the fuel supply systems are calculated on the basis of the fuel distribution command value and the fuel control signal command value.

Fuel control device and control method for a combustor of a gas turbine

Provided is a control device of a gas turbine including a compressor, a combustor, and a turbine. The control device executes load control of allowing an operation control point for operation control of a gas turbine to vary in response to a load of the gas turbine. The operation of the gas turbine is controlled on the basis of a rated temperature adjustment line for temperature adjustment control of a flue gas temperature at a predetermined load to a rated flue gas temperature at which performance of the gas turbine becomes rated performance, a preceding setting line for setting of the flue gas temperature at the predetermined load to a preceding flue gas temperature that becomes lower in precedence to the rated flue gas temperature, and a limit temperature adjustment line for temperature adjustment control.

Control device, system, control method, power control device, gas turbine, and power control method

A control device is configured to control a gas turbine that is configured to compress a suctioned air with a compressor to obtain compressed air, mix a fuel supplied from a combustor with the compressed air to burn the fuel and the compressed air to generate a combustion gas, operate a turbine with the combustion gas to rotate a rotor, and discharge the combustion gas that has operated the turbine as a flue gas. The compressor includes an inlet guide vane which is capable of adjusting a degree of opening and is on an air-suction side, and the control device is configured to execute temperature adjustment control to control the degree of opening of the inlet guide vane along a temperature adjustment line indicating an upper limit temperature of a flue gas temperature defined according to a load of the gas turbine.

Gas turbine inlet guide vane control device, system and control method

A temperature control device includes a temperature difference calculation unit that calculates a temperature difference between an inlet and an outlet of a boost compressor on the basis of a pressure ratio of the inlet and the outlet of the boost compressor and an IGV opening degree of the boost compressor, the boost compressor outputting cooling air obtained by cooling compressed air from a compressor to a cooling target; a temperature information calculation unit that calculates temperature information for feedback control for at least one of the inlet and the outlet of the boost compressor on the basis of the temperature difference between the inlet and the outlet of the boost compressor; and a control unit that performs feedback control by using the temperature information for feedback control such that at least one of an inlet temperature and an outlet temperature of the boost compressor approaches a setting value.

Temperature control device, gas turbine, temperature control method, and program

A gas turbine drives a power generator by rotating a turbine using combustion gas generated in a combustor as a result of supplying the combustor with fuel and compressed air from a compressor, which is provided with an inlet guide vane at a front stage. An operation control device of the gas turbine enables an IGV priority open flag when the inlet guide vane is not fully open and when the system frequency is lower than or equal to a predetermined threshold value &#x3b1; or there is a request for increasing the output of the gas turbine. When the IGV priority open flag is enabled, the operation control device sets the degree of opening of the inlet guide vane to be larger than before. Accordingly, the output can be increased without having to increase the turbine inlet temperature, regardless of the operational state of the gas turbine.

Gas-turbine control device, gas turbine, and gas-turbine control method

A solar heat turbine system includes: a compressor which compresses a working fluid, and generates a high-pressure working fluid; a solar heat receiver which heats the high-pressure working fluid with solar heat, and which generates a high-temperature working fluid; a turbine which is rotationally driven by the high-temperature working fluid; a restriction mechanism which restricts a flow of at least one of the high-pressure working fluid and the high-temperature working fluid; a rotation interlocking mechanism which rotationally drives the compressor so as to interlock with the turbine; a bleed mechanism which causes the high-pressure working fluid which is in a process of being generated in the compressor to be bled as a bled working fluid; and a system control unit which causes the bleed mechanism to execute bleeding after the restriction mechanism is caused to restrict.

Solar heat turbine system, and device and method for controlling said system

A valve control device is provided in a gas turbine having a combustor for generating combustion gas, a turbine driven by the combustion gas generated by the combustor, a flow rate regulating valve for regulating the flow rate of the fuel to be supplied to the combustor, and a pressure regulating valve disposed upstream of the flow rate regulating valve, for regulating the fuel pressure. The valve control device controls the opening degree of the valve. The valve control device includes a load decrease detection part which detects a load decrease of the gas turbine, and a pressure control part which controls the opening degree of the valve in accordance with the output of the gas turbine. The valve control device suppresses instability of the gas turbine output even when the load rapidly decreases.

Valve control device, gas turbine, and valve control method

A fuel control method for a gas turbine with a combustor being formed of at least two groups of a pluralities of main nozzles for supplying fuel, and that supplies fuel from the main nozzles of all groups upon ignition of the combustor (S), and supplies fuel from three main nozzles of a group A during subsequent acceleration of the gas turbine (S). Because fuel is injected from a small number of the main nozzles during acceleration, the fuel flow rate per one main nozzle is increased, thereby increasing the fuel-air ratio (fuel flow rate/air flow rate) in a combustion region and improving the combustion characteristics. Accordingly, the generation of carbon monoxide and unburned hydrocarbon is reduced, whereby no bypass valve is required and manufacturing costs are reduced. Because fuel is supplied from the main nozzles of all groups and burned in the entire area of the combustor upon ignition, it is possible to easily propagate a flame to all the other adjacent main nozzle groups, thereby improving the ignition characteristics of the whole gas turbine.

Fuel control method and fuel control apparatus for gas turbine and gas turbine

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Tokyo, Japan

Takashi Sonoda