Hitachi Patente

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The purpose of the present invention is to improve the aging performance of a plurality of storage battery unit elements by converging variations in age deterioration of the plurality of storage battery unit elements mounted on a railway vehicle. One representative of the present invention is a management device for a railway storage battery, which manages a plurality of storage battery unit elements exchangeably mounted on a railway vehicle, the management device comprising: an in-operation storage battery information acquisition means for acquiring information about the deterioration levels of the plurality of storage battery unit elements mounted on the railway vehicle in operation; an in-storage storage battery information acquisition means for acquiring information about the deterioration levels of a plurality of storage battery unit elements stored outside the railway vehicle; and a storage battery management information display means for displaying information about the deterioration levels of the plurality of storage battery unit elements in operation and in storage.

An object of the present invention is to appropriately set a margin of power demand prediction used when calculating transmitted power in a power interchange system that transmits power generated in a power generation base to a demand base by a power transmission network. When a difference between demand prediction and actual demand does not fall within a range of allowable difference, the power interchange system according to the present invention determines a correction value for the demand prediction in accordance with the absolute value of the difference, and applies the determined correction value to the demand prediction (refer to Fig. 13).

a deterioration checking device for a gas separation system is provided that is capable of checking for deterioration by using an existing sensor required for system operation. The deterioration checking device for the gas separation system includes one or more gas separation membranes for selectively permeating a specific gas, and controls an output of each of the gas separation membranes by using an output control valve, and the deterioration checking device includes: an input unit that captures a processing amount that is affected by deterioration of the gas separation membrane; a database that stores the processing amount when the gas separation system is operated using the gas separation membrane in a brand-new state (before the deterioration); and a separation-membrane performance evaluation unit that evaluates performance of the gas separation membrane on the basis of a difference between a processing amount at the current time of the capturing and a processing amount in the brand-new state.

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Even when there is no accurate position information of a traffic light provided on a traveling line, a state of the traffic light is identified with high accuracy. Therefore, one of representative state determination devices is a state determination device including a traffic light database configured to store, based on an image in a traveling direction of a traveling train, information related to a traffic light included in the image, a sensor unit attached to the train, and a traffic light specification unit configured to specify the traffic light from an image acquired by the sensor unit. The traffic light database includes movement trajectory information of a traffic light calculated from an image of the traffic light included in the image in the traveling direction and/or appearance region information of the traffic light calculated from distance information from a line on which the train travels to the traffic light, and the traffic light specification unit specifies the traffic light from the image acquired by the sensor unit with reference to the traffic light database and determines a state of the corresponding traffic light.

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To perform a remaining service life prediction with high accuracy, includes: a simulation processing unit (102) that simulates a signal strength with respect to an inspection condition that may be a cause of variability of a defect detection signal by non-destructive inspection and a defect condition that is a condition of a defect that is a target of the non-destructive inspection; a probability distribution estimating unit (104) that estimates, based on a result of analysis by the simulation processing unit (102) and an actual signal strength that is a signal strength of a response signal obtained by actual inspection, a probability distribution relating to the defect condition estimated from the actual signal strength; and a remaining service life predicting unit (105) that calculates a temporal change of the probability distribution relating to the defect condition estimated by the probability distribution estimating unit (104), estimates, as a remaining service life, time at which an overlapping part of the probability distribution relating to the defect condition after a predetermined period of time and a predetermined fracture probability distribution of an inspection target satisfies a predetermined condition, and outputs the estimated remaining service life to an output unit.

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A water electrolysis system and a method for operating the water electrolysis system, capable of providing an adjustment capacity solely by controlling an amount of water supply are provided. A water electrolysis system which applies grid power to a plurality of water electrolysis stacks via a rectifier to provide hydrogen gas and oxygen gas as generated gas from water, and adjusts a power consumption in accordance with a command of a provision of an adjustment capacity. Upon reception of the command of the provision of the adjustment capacity in a contract timeframe in which the provision of the adjustment capacity is contracted, an amount of water supplied to the water electrolysis stack, temperature and pressure of the water electrolysis stack are made controllable in accordance with an amount of power derived from adding an amount of power for the adjustment capacity to be provided to an amount of power consumption of the water electrolysis stacks.

A rotating electrical machine that sprays a liquid coolant onto end faces of a rotor is configured such that the coolant is less likely to enter a gap between the rotor and a stator. Protruding portions 36 and 39 having a cylindrical shape and protruding outward in an axial direction are provided on outer peripheral sides of end plates 35 disposed on end faces on both sides of a rotor core 31. Cooling oils 71 and 72 supplied from oil supply holes 4c and 5c of end brackets 4 and 5 of a rotating electrical machine 1 hit end faces of a rotor 30 as indicated by arrows 71a and 72a of the rotor 30, flow to the outer peripheral sides, move to positions (+Zrf and -Zrr) spaced apart from the rotor core 31 in the axial direction, due to the protruding portions 36 and 39 as indicated by arrows 71c and 72c, and are then guided to a stator core 11 side. In addition, the rotating electrical machine 1 is formed such that a coordinate +Zsf of a minimum inner diameter position of a resin 24 is closer to a center position of the rotor 30 than a coordinate +Zrf, and a coordinate -Zsr of a minimum inner diameter position of a resin 26 is closer to the center position than a coordinate -Zrr.

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A system identifies a vegetation boundary in a target area based on a remote sensing image and DEM data of the target area and generates a height map representing a height at each position in the target area. The system detects, from the height map, an edge treetop that is a treetop within a buffer distance from an asset in the target area. The system estimates a tree crown size corresponding to the height represented by the height map by using a plant allometry model that is a domain knowledge-based model that takes height as input and outputs tree crown size. The system estimates a tree crown area from the tree crown size corresponding to the edge treetop, estimates an azimuth angle based on the relation between the tree crown area and the vegetation boundary, and generates a 3D bounding box of a tree having the edge treetop based on the height of the edge treetop, the tree crown size corresponding to the edge treetop, and the azimuth angle.