Hitachi, Ltd.

Toshihiro Morikawa

Naoyuki Nagafuchi

Masatoshi Takada

Hidenori Inoue

Jinichiro Goto

Yoshiharu Hayashi

Takuya Yoshida

Jinichirou Gotou

A remote maintenance system has a monitoring computer for monitoring a facility and a monitoring center computer for maintenance management. The monitoring computer has a database for storing image data of the monitored facility. The monitoring center computer a database for storing CAD data for the monitored facility. The monitoring center computer provides coordinates to the image data sent from the monitoring computer, and superposes the image coordinate data and CAD coordinate data for the CAD. The center computer locates a needed maintenance location on the basis of the result of the superposition processing.

Remote maintenance system, monitoring center computer used for the same, monitoring system and method of communication for maintenance

A gas turbine performance analysis system includes a performance computation module for receiving an actual measured value of an inlet air temperature introduced to a compressor, a compressor pressure ratio, and a flow rate of fuel supplied to the gas turbine, and for calculating and outputting values of the gas turbine's power output and exhaust temperature based on these actual measured values. A performance estimation module evaluates the performance of the gas turbine based on the deviation between the values of power output and exhaust temperature outputted from the performance computation module and the actual measured values of power output and exhaust temperature. An adjustment module calculates a corrected value of the fuel flow rate based on the actual measured values of inlet air temperature, compressor pressure ratio and fuel flow rate, and inputs the corrected fuel flow rate value into the performance computation module.

Gas turbine performance analysis method and gas turbine performance analysis system

A remote maintenance system has a monitoring computer for monitoring a facility and a monitoring center computer for maintenance management. The monitoring computer has a database for storing image data of the monitored facility. The monitoring center computer has a database for storing CAD data for the monitored facility. The monitoring center computer provides coordinates to the image data sent from the monitoring computer, and superposes the image coordinate data and CAD coordinate data for the CAD. The center computer locates a needed maintenance location on the basis of the result of the superposition processing.

A remote maintenance system is comprised of: a monitoring computer for monitoring a facility; and a monitoring center computer for using maintenance management. The monitoring computer has a database for storing image data of the monitored facility. The monitoring center computer includes: a database for storing CAD data for the monitored facility. The monitoring center computer provides coordinates to the image data sent from the monitoring computer, and superposes the image coordinate data and CAD coordinate data for the CAD. And the center computer locates a needed maintenance spot on the basis of a result of the superposition processing.

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Naka, Japan

Toshihiro Morikawa