Patents Assigned to Tokyo Electric Power Company Holdings, Incorporated
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Patent number: 11973417Abstract: A voltage drop Vzs is calculated based on an output current detection value Iac and a virtual synchronous impedance Zs or a corrected virtual synchronous impedance Zs?, and a value obtained by subtracting the voltage drop Vzs from an internal induced voltage Ef is output as a grid voltage command value Vac*. Zs calculation unit 7 limits an output current phase ? so that the output current phase ? is within an effective range by a phase limiter 12a, and calculates the corrected virtual synchronous impedance Zs? based on a limited output current phase ?, the internal induced voltage Ef, a grid voltage detection value Vac and a current limit value Ilim. Accordingly, in grid interconnection power conversion device that controls a virtual synchronous generator, it is possible to continue operation while suppressing an overcurrent and possess a synchronizing power generated by action or working of a virtual synchronous impedance.Type: GrantFiled: August 6, 2020Date of Patent: April 30, 2024Assignees: TOKYO ELECTRIC POWER COMPANY HOLDINGS, INCORPORATED, MEIDENSHA CORPORATIONInventors: Kenichi Suzuki, Jun Takami, Ryota Samejima, Hideki Noda, Naoto Maeda, Toshiya Inoue, Kazu Shoji
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Publication number: 20230087529Abstract: A control system is provided for a power conversion system having a power converter that controls a virtual synchronous generator simulating a synchronous generator and interconnected to a power grid. The control system has a virtual synchronous impedance compensation block inputting an output current detection value of the power converter and a set voltage amplitude command value, simulating a voltage drop due to a virtual synchronous impedance, and calculating an output voltage command value and an internal induced voltage according to the simulated voltage drop; a virtual synchronous generator model determining an angular frequency simulating the synchronous generator; and a PCS output voltage control unit performing control so that an output voltage of the power conversion system coincides with the output voltage command value calculated by the virtual synchronous impedance compensation block.Type: ApplicationFiled: August 6, 2020Publication date: March 23, 2023Applicants: TOKYO ELECTRIC POWER COMPANY HOLDINGS, INCORPORATED, MEIDENSHA CORPORATIONInventors: Kenichi SUZUKI, Naoto MAEDA, Jun TAKAMI, Ryota SAMEJIMA, Hideki NODA, Jun ISOO, Kazu SHOJI
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Publication number: 20220399801Abstract: A voltage drop Vzs is calculated based on an output current detection value Iac and a virtual synchronous impedance Zs or a corrected virtual synchronous impedance Zs?, and a value obtained by subtracting the voltage drop Vzs from an internal induced voltage Ef is output as a grid voltage command value Vac*. Zs calculation unit 7 limits an output current phase ? so that the output current phase ? is within an effective range by a phase limiter 12a, and calculates the corrected virtual synchronous impedance Zs? based on a limited output current phase ?, the internal induced voltage Ef, a grid voltage detection value Vac and a current limit value Ilim. Accordingly, in grid interconnection power conversion device that controls a virtual synchronous generator, it is possible to continue operation while suppressing an overcurrent and possess a synchronizing power generated by action or working of a virtual synchronous impedance.Type: ApplicationFiled: August 6, 2020Publication date: December 15, 2022Applicants: TOKYO ELECTRIC POWER COMPANY HOLDINGS, INCORPORATED, MEIDENSHA CORPORATIONInventors: Kenichi SUZUKI, Jun TAKAMI, Ryota SAMEJIMA, Hideki NODA, Naoto MAEDA, Toshiya INOUE, Kazu SHOJI
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Patent number: 11418056Abstract: A monitoring control system includes: at least one transmission monitoring control subsystem; and at least one distribution monitoring control subsystem. The transmission monitoring control subsystem and the distribution monitoring control subsystem respectively include an operation procedure creation unit that creates an operation procedure that defines a procedure of an operation for a facility installed in an electric power system, and an operation unit that, in a case an on-site operation that cannot be remotely performed on the facility is included in the operation procedure, transmits, to an on-site terminal associated with the on-site operation, a start confirmation instruction to confirm whether or not the on-site operation can be started and the operation procedure for the on-site operation. The monitoring control system performs monitoring control of the power transmission system and the power distribution system based on the operation procedure.Type: GrantFiled: April 23, 2018Date of Patent: August 16, 2022Assignees: Toshiba Energy Systems & Solutions Corporation, Tokyo Electric Power Company Holdings, IncorporatedInventors: Hiroaki Fujiura, Masami Onishi, Hirofumi Fujii, Hiroaki Sato, Koichi Takeuchi, Junya Yamamoto, Takashi Eguchi, Tomohiro Kubo, Masanori Endo, Kenji Kitami, Takaaki Hosaka, Jun Inoue
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Patent number: 11346563Abstract: A superordinate controlling device for a heat source system (1) including a plurality of heat sources, the superordinate controlling device being applied to the heat source system (1) and controlling heat-pump type chillers (2a) and (2b) and absorption-type chillers (2c) and (2d) in such a manner that a heat transfer medium leaving temperature that is the temperature of a heat transfer medium supplied to an external load (6) is equal to a setting temperature. The heat-pump type chillers (2a) and (2b) each have a higher Coefficient of Performance (COP) than that of each of the absorption-type chillers (2c) and (2d).Type: GrantFiled: September 20, 2017Date of Patent: May 31, 2022Assignees: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD., TOKYO ELECTRIC POWER COMPANY HOLDINGS, INCORPORATEDInventors: Satoshi Nikaido, Koki Tateishi, Yusuke Hazui, Yutaka Takenaka, Hirotaka Hanasaki, Satoru Tanaka
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Patent number: 10992174Abstract: A monitoring control system including: at least one transmission monitoring control subsystem that performs monitoring control of a power transmission system; at least one distribution monitoring control subsystem that performs monitoring control of a power distribution system; a calculation server that stores outage plan names related to outages of the power transmission system and outages of the power distribution system; and a network that connects the transmission monitoring control subsystem, the distribution monitoring control subsystem, and the calculation server. The monitoring control system performs monitoring control of the power transmission system and the power distribution system based on the outage plan name.Type: GrantFiled: April 23, 2018Date of Patent: April 27, 2021Assignees: Toshiba Energy Systems & Solutions Corporation, Tokyo Electric Power Company Holdings, IncorporatedInventors: Hiroaki Fujiura, Masami Onishi, Hirofumi Fujii, Hiroaki Sato, Koichi Takeuchi, Junya Yamamoto, Takashi Eguchi, Tomohiro Kubo, Masanori Endo, Kenji Kitami, Takaaki Hosaka, Jun Inoue
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Publication number: 20210075253Abstract: A monitoring control system including: at least one transmission monitoring control subsystem that performs monitoring control of a power transmission system; at least one distribution monitoring control subsystem that performs monitoring control of a power distribution system; a calculation server that stores outage plan names related to outages of the power transmission system and outages of the power distribution system; and a network that connects the transmission monitoring control subsystem, the distribution monitoring control subsystem, and the calculation server. The monitoring control system performs monitoring control of the power transmission system and the power distribution system based on the outage plan name.Type: ApplicationFiled: April 23, 2018Publication date: March 11, 2021Applicants: Toshiba Energy Systems & Solutions Corporation, Tokyo Electric Power Company Holdings, IncorporatedInventors: Hiroaki FUJIURA, Masami ONISHI, Hirofumi FUJII, Hiroaki SATO, Koichi TAKEUCHI, Junya YAMAMOTO, Takashi EGUCHI, Tomohiro KUBO, Masanori ENDO, Kenji KITAMI, Takaaki HOSAKA, Jun INOUE
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Patent number: 10862160Abstract: (Problem to be Solved) The present application is to provide an all-solid-state lithium-sulfur battery that experiences little reduction in battery performance even after repeated charging/discharging cycling, does not generate toxic gas when damaged, and does not require addition of equipment or the like for management of moisture or oxygen concentration; and a production method for the all-solid-state lithium-sulfur battery. (Means for Solution) The present invention uses a positive electrode that contains sulfur and a conductive material, a negative electrode that contains lithium metal, and, as an electrolyte layer that is interposed between the positive electrode and the negative electrode, an oxide solid electrolyte to achieve a high-performance all-solid-state lithium-sulfur battery.Type: GrantFiled: March 9, 2017Date of Patent: December 8, 2020Assignees: TOKYO ELECTRIC POWER COMPANY HOLDINGS, INCORPORATED, TOKYO METROPOLITAN UNIVERSITYInventors: Hideo Michibata, Kiyoshi Kanamura, Mao Shoji
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Patent number: 10686186Abstract: (Problem to be Solved) The present application is to provide: a positive electrode material for producing a lithium-sulfur solid-state battery that does not experience degradation of battery performance from charging/discharging cycling, does not present the fire risk of liquid electrolytes, and thereby makes battery performance compatible with safety; an all-solid-state lithium-sulfur battery that uses the positive electrode material; and a production method. (Means for Solution) The present application relate to a lithium-sulfur solid-state battery positive electrode material that contains: sulfur; a conductive material; a binder; and an ionic liquid or a solvate ionic liquid, and an all-solid-state lithium-sulfur battery that includes: a positive electrode that comprises the positive electrode material; a negative electrode; and an oxide solid electrolyte.Type: GrantFiled: March 9, 2017Date of Patent: June 16, 2020Assignees: TOKYO ELECTRIC POWER COMPANY HOLDINGS, INCORPORATED, TOKYO METROPOLITAN UNIVERSITYInventors: Hideo Michibata, Kiyoshi Kanamura, Mao Shoji
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Publication number: 20200144856Abstract: A monitoring control system includes: at least one transmission monitoring control subsystem; and at least one distribution monitoring control subsystem. The transmission monitoring control subsystem and the distribution monitoring control subsystem respectively include an operation procedure creation unit that creates an operation procedure that defines a procedure of an operation for a facility installed in an electric power system, and an operation unit that, in a case an on-site operation that cannot be remotely performed on the facility is included in the operation procedure, transmits, to an on-site terminal associated with the on-site operation, a start confirmation instruction to confirm whether or not the on-site operation can be started and the operation procedure for the on-site operation. The monitoring control system performs monitoring control of the power transmission system and the power distribution system based on the operation procedure.Type: ApplicationFiled: April 23, 2018Publication date: May 7, 2020Applicants: Toshiba Energy Systems & Solutions Corporation, Tokyo Electric Power Company Holdings, IncorporatedInventors: Hiroaki FUJIURA, Masami ONISHI, Hirofumi FUJII, Hiroaki SATO, Koichi TAKEUCHI, Junya YAMAMOTO, Takashi EGUCHI, Tomohiro KUBO, Masanori ENDO, Kenji KITAMI, Takaaki HOSAKA, Jun INOUE
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Patent number: 10628976Abstract: An information processing system includes a specifying unit specifying an electric facility to be an inspection target based on: information indicating positions of a plurality of electric facilities included in a line map including information indicating the positions of the plurality of electric facilities and information indicating a connection route between the electric facilities; and information indicating a position of an information processing terminal.Type: GrantFiled: March 16, 2017Date of Patent: April 21, 2020Assignee: Tokyo Electric Power Company Holdings, IncorporatedInventors: Hitoshi Furuya, Kenjiro Kase, Naohiro Minamide, Shuuji Ueno, Fumio Ishige, Kouichi Onodera, Katumi Yamada, Masayuki Ichida, Keijiro Shibui, Hideo Mizuochi
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Publication number: 20200044941Abstract: A monitoring system includes a monitoring control device, an image information providing device, and a client control device. The monitoring control device monitors infrastructure facilities and transmits statuses of the infrastructure facilities acquired on the basis of information input from a sensor to the image information providing device. The image information providing device generates original image information on the basis of the infrastructure facility statuses received from the monitoring control device. The client control device is connected to a display device and an operation device, receives information for designating a partial area of an entire image capable of being generated from the original image information from the operation device, transmits the received information to the image information providing device, and displays an image based on information received from the image information providing device on the display device.Type: ApplicationFiled: March 28, 2018Publication date: February 6, 2020Applicants: Toshiba Energy Systems & Solutions Corporation, Tokyo Electric Power Company Holdings, IncorporatedInventors: Hiroaki FUJIURA, Masaru KAWAKAMI, Hiroyuki YABE, Yuji FUJIMOTO, Shinobu KAWASHIMA, Koichi TAKEUCHI, Junya YAMAMOTO, Takashi EGUCHI, Tomohiro KUBO, Masanori ENDO, Kenji KITAMI, Takaaki HOSAKA, Jun INOUE
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Publication number: 20200041144Abstract: A superordinate controlling device for a heat source system (1) including a plurality of heat sources, the superordinate controlling device being applied to the heat source system (1) and controlling heat-pump type chillers (2a) and (2b) and absorption-type chillers (2c) and (2d) in such a manner that a heat transfer medium leaving temperature that is the temperature of a heat transfer medium supplied to an external load (6) is equal to a setting temperature. The heat-pump type chillers (2a) and (2b) each have a higher Coefficient of Performance (COP) than that of each of the absorption-type chillers (2c) and (2d).Type: ApplicationFiled: September 20, 2017Publication date: February 6, 2020Applicants: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD., TOKYO ELECTRIC POWER COMPANY HOLDINGS, INCORPORATEDInventors: Satoshi NIKAIDO, Koki TATEISHI, Yusuke HAZUI, Yutaka TAKENAKA, Hirotaka HANASAKI, Satoru TANAKA
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Publication number: 20190288277Abstract: (Problem to be Solved) The present application is to provide: a positive electrode material for producing a lithium-sulfur solid-state battery that does not experience degradation of battery performance from charging/discharging cycling, does not present the fire risk of liquid electrolytes, and thereby makes battery performance compatible with safety; an all-solid-state lithium-sulfur battery that uses the positive electrode material; and a production method. (Means for Solution) The present application relate to a lithium-sulfur solid-state battery positive electrode material that contains: sulfur; a conductive material; a binder; and an ionic liquid or a solvate ionic liquid, and an all-solid-state lithium-sulfur battery that includes: a positive electrode that comprises the positive electrode material; a negative electrode; and an oxide solid electrolyte.Type: ApplicationFiled: March 9, 2017Publication date: September 19, 2019Applicants: TOKYO ELECTRIC POWER COMPANY HOLDINGS, INCORPORATED, TOKYO METROPOLITAN UNIVERSITYInventors: Hideo Michibata, Kiyoshi Kanamura, Mao Shoji
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Publication number: 20190273282Abstract: (Problem to be Solved) The present application is to provide an all-solid-state lithium-sulfur battery that experiences little reduction in battery performance even after repeated charging/discharging cycling, does not generate toxic gas when damaged, and does not require addition of equipment or the like for management of moisture or oxygen concentration; and a production method for the all-solid-state lithium-sulfur battery. (Means for Solution) The present invention uses a positive electrode that contains sulfur and a conductive material, a negative electrode that contains lithium metal, and, as an electrolyte layer that is interposed between the positive electrode and the negative electrode, an oxide solid electrolyte to achieve a high-performance all-solid-state lithium-sulfur battery.Type: ApplicationFiled: March 9, 2017Publication date: September 5, 2019Applicants: TOKYO ELECTRIC POWER COMPANY HOLDINGS, INCORPORATED, TOKYO METROPOLITAN UNIVERSITYInventors: Hideo Michibata, Kiyoshi Kanamura, Mao Shoji
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Patent number: 10288547Abstract: A facility state analysis device of an embodiment is provided. The device includes an inputter which accepts input of information specifying a state and location of a facility installed outdoors, a calculator which calculates, by performing statistical processing based at least in part on the information specifying the state and location input to the inputter and information on a predetermined section on a map, an average failure year of the facilities in the section, and a display controller which displays, on a display, the average failure year calculated by the calculator superimposed on the map.Type: GrantFiled: March 16, 2017Date of Patent: May 14, 2019Assignee: Tokyo Electric Power Company Holdings, IncorporatedInventors: Mikiyuki Ichiba, Tamotsu Uduki, Hideo Mizuochi, Yuya Niidome, Masaomi Takaoka, Shinsuke Nasukawa, Yuuji Tagawa, Hideaki Sato, Yoshiki Sakamoto, Akihiko Kataoka
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Patent number: 10234374Abstract: A method is used for selecting a boundary sample. The method includes acquiring a deterioration trend of a new device by performing a deterioration acceleration treatment to the new device, acquiring deterioration trends of a plurality of repaired devices which have been repaired after long-term use by performing a deterioration acceleration treatment to the plurality of repaired devices, calculating an upper limit of deterioration of the repaired device based on the deterioration trend of the new device, and selecting a boundary sample indicating a limit state in which the device can be reused as a standard of reuse of the device by specifying a repaired device having the largest deterioration among the repaired devices having a deterioration not larger than the upper limit.Type: GrantFiled: March 15, 2017Date of Patent: March 19, 2019Assignee: Tokyo Electric Power Company Holdings, IncorporatedInventors: Noboru Kobayashi, Tamotsu Ogawa, Chikara Morooka, Yuki Matsuoka, Hideharu Oniki
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Patent number: 10229521Abstract: An area characteristic display device includes an inputter which receives input of information that enables identification of state and position of equipment installed outdoors, and a display controller which displays, based on the information that enables identification of the state and position that has been input to the inputter, and data on area characteristics, a distribution of the state together with the data on area characteristics, on a display with being superimposed on a map.Type: GrantFiled: March 15, 2017Date of Patent: March 12, 2019Assignee: Tokyo Electric Power Company Holdings, IncorporatedInventors: Tamotsu Uduki, Shinya Iijima, Yasuhiro Kinoshita, Mituaki Oohara, Yukio Koori, Daisuke Yamaguchi
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Patent number: 10215549Abstract: A method for measuring a deflection amount of a columnar structure includes the following steps. The method includes placing a longitudinal direction of a columnar structure in a direction parallel to a ground to place the columnar structure on a support member that supports the columnar structure such that the columnar structure is rotatable around an axis in the longitudinal direction; determining that the columnar structure placed has stopped rotating under its own weight around the axis; and measuring, after the stop of the rotation is determined, measuring a distance in a vertical direction between a straight line connecting both ends in the longitudinal direction of the columnar structure and a curved line along a shape in the longitudinal direction of the columnar structure.Type: GrantFiled: March 15, 2017Date of Patent: February 26, 2019Assignee: Tokyo Electric Power Company Holdings, IncorporatedInventors: Yuuji Tagawa, Kazunari Kashima, Chikara Morooka, Hideharu Oniki, Yuya Niidome, Makoto Koide, Teppei Kishida, Takeya Nakajima, Hiroyuki Abe, Hideharu Osoguchi
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Patent number: 10151610Abstract: A flow rate measurement device is configured to measure a flow rate of a gas flowing inside of a pipeline, and includes an ultrasonic transducer installed so as to be in contact with the pipeline, and a flow rate calculation part configured to calculate the flow rate of the gas according to a result of reception of ultrasonic wave from the ultrasonic transducer, wherein the ultrasonic transducer includes an ultrasonic oscillation part configured to emit the ultrasonic wave toward the inside of the pipeline and an ultrasonic reception part configured to receive the ultrasonic wave, and at least the ultrasonic oscillation part has a focusing part configured to focus the ultrasonic wave on a center of the pipeline.Type: GrantFiled: July 23, 2015Date of Patent: December 11, 2018Assignees: TOKYO ELECTRIC POWER COMPANY HOLDINGS, INCORPORATED, TOKYO INSTITUTE OF TECHNOLOGYInventors: Shuichi Umezawa, Katsuhiko Tanaka, Masaki Yokosaka, Ryoji Miyauchi, Tatsuya Kawaguchi, Hiroshige Kikura, Nobuyoshi Tsuzuki, Keisuke Tsukada