Hitachi, Ltd.

Central Japan Railway Company

Hiroto Takeuchi

Kazuyuki Tsunoda

Atsushi Honzawa

Shinichiro Kato

Kiyoto Kubota

Shigeaki Namba

Tohru Akatsu

Kazuyasu Asakura

Mika Imai

Shigeaki Nanba

Keisuke Noda

Katsuhide Kitagawa

Shuhei Yamasaki

Bids on a power trading market can be performed to improve an economic balance of power generation plants and power companies. In order to solve the above problems, in the present invention, a plant operation assistance systemthat assists the operation of a thermal power plantand a pumped storage power plant, which supply power to a power transmission network A, specifies a power amount that can be bid on a power trading market based on net reserve power of the power plants including another company's power generation plantwhen power sales on the power transmission network A drop, transmits bid data including the power amount to a power exchange system, and can transmit power from the power generation plant to a power transmission network B if contracted by the power exchange system

Power generation plant operation assistance system and power generation plant control system

To further optimize an operation of a power plant. The system has a storage cell which charges utilizing surplus electric power generated by a power plantand a databasewhich accumulates at least information on power consumption for each power plant apparatus(hereinafter, described as an in-plant apparatus). An integrated controllercompares power consumption of the power plant apparatusin operation in the case of executing each function among a plurality of functions and an electric discharge capacity of the storage cell, and selects an executable function within a range of the electric discharge capacity of the storage cell. Then, it controls to execute the selected function utilizing electric power supplied from the storage cell.

Storage cell system and power plant control system

Plural power storage systemsare provided in a power system. The power storage systemsare connected to a management systemvia a communication network CN. The power storage systems each include a power storage device, and a control devicefor controlling the power storage device. The control device stores performance information about the power storage system including the control device, location information indicating a location in the power system of the power storage system including the control device, and order information indicating an order of operation allocated to the power storage system including the control device. When a disturbance occurs in the power system, the control device performs a predetermined compensation operation based on the location information and the order information, and then returns to a preset stand-by state.

Power grid stabilization system and power grid stabilization method

A system stabilization system for suppressing a power fluctuation in a power system, the system stabilization system including: a power storage apparatus configured to suppressing a power fluctuation in the power system by either charging or discharging in response to a control; a capacitor apparatus configured to suppress a power fluctuation in the power system by making the charge/discharge response to control faster than the power storage apparatus and charging or discharging in response to the control; and a control apparatus configured to control the power storage apparatus and the capacitor apparatus so as to reduce occurrences of charging or discharging in the power storage apparatus.

System stabilization system

Provided are COseparation and recovery equipment that yields a higher COrecovery rate, and a coal gasification combined power plant including the COseparation and recovery equipment with high plant efficiency. The COseparation and recovery equipment, has a CO shift reactor in which a gas containing as its main components of CO and HO is introduced and converted into COand H, and includes: an inlet valve that is provided on the inlet side of the CO shift reactor; an outlet valve that is provided on the outlet side of the CO shift reactor; a steam control valve for applying high-temperature steam to a foregoing part of the inlet valve; and a gas composition analyzer that senses a gas composition of a stream flowing into the CO shift reactor.

CO2 separation and recovery equipment, and a coal gasification combined power plant comprising CO2 separation and recovery equipment

A method and device for effecting a fast but smooth deceleration or stopping of trains controlled under the automatic train control (ATC) system. Under ATC, a permitted maximum velocity is provided as an 'ATC condition' to activate the brake system of the train if that velocity is exceeded. When it is necessary to alter the velocity of a train, a control center specifies a feeder section to have the ATC condition to be altered. Next, a substation corresponding to the specified feeder section is provided with notice about the alteration of the ATC condition. The notice includes the impending reduction of velocity. In response, the substation decelerates the train without using the ATC brake system provided on the train. When the train has been sufficiently slowed down such that the alteration of the ATC condition will not result in activation of the ATC brake system, the alteration of the ATC condition is then effected.

Method and device for a smooth and timely deceleration or stop in

The invention relates to an improved block control for controlling a train safely and efficiently along a railway system. The apparatus includes a mechanism for designating a train route, a mechanism for assigning a feeder section along the designated train route to a desired substation, a mechanism for locking an assigned feeder section to a desired substation and for preventing unlocking of that assignment until predetermined conditions are met, a mechanism for designating a traveling direction of the train along the assigned feeder section, and a mechanism for controlling operation of the train along a designated control route. The invention also relates to a mechanism for enlarging a control route, a mechanism for unlocking the assigned feeder sections and substations, a mechanism for checking a determined control route, a mechanism for changing the borders of a feeder section, and a mechanism for selectively communicating received data to the correct substation to facilitate control of the train. The invention also relates to a method concerning the same.

Growing community of inventors

Tokyo, Japan

Hiroto Takeuchi