Remote monitoring diagnostic system and method thereof

• US 20050131656A1
• Filed: 01/12/2005
• Published: 06/16/2005
• Est. Priority Date: 06/22/2000
• Status: Active Grant

• Current Assignee: mitsubishi hitachi power systems, ltd. (Mitsubishi Heavy Industries, Ltd.)
• Original Assignee: Hitachi Engineering & Services Company Limited (Hitachi, Ltd.), Hitachi, Ltd.
• Inventors: Okabe, Akira, Ikeda, Hiraku, Yamaguchi, Zenji, Ichihashi, Akiyo
• Granted Patent: US 6,999,903 B2
• Time in Patent Office: Days
• US Class Current: 702/188
• CPC Class Codes: G05B 2219/24048 Remote test, monitoring, diagnostic
• CPC Class Codes: G05B 2219/24084 Remote and local monitoring, local result to remote, remote takes action
• CPC Class Codes: G05B 2223/06 Remote monitoring
• CPC Class Codes: G05B 23/0264 Control of logging system, e.g. decision on which data to store; time-stamping measurements
• CPC Class Codes: G05B 23/027 Alarm generation, e.g. communication protocol; Forms of alarm
• CPC Class Codes: Y02P 90/80 Management or planning

Abstract

The present invention comprises a data storage file used to collect the plant data representing the operation status of a plant and to store the plant data, a monitoring system to monitor the field plant according to the collected plant data, a database storing the past plant data associated with errors having occurred to the plant and actions taken to cope with the errors, a diagnostic system to analyze the plant data sent according to the database, and a reporting system to send a report to the user of the plant regarding the causes for the error and/or actions taken to cope with the error based on the result of the analysis.

Claims

1-10. -10. (canceled)

11. A remote monitoring diagnostic system comprising:

a monitoring means for collecting an exhaust gas temperature data of each of plural combustors installed on a gas turbine in a field power plant and for monitoring a combustion state of each of said combustors;

a data storage file for storing said exhaust gas temperature data of each of said combustors, said exhaust gas temperature data being collected by said monitoring means;

a database in which data relating to a similar phenomenon of a past error generation of said combustor of said gas turbine and a corresponding operation against said past error generation is accumulated;

diagnostic means for judging an error generation in said combustor, when a difference in temperature of two exhaust gas temperature datum detected from adjacent combustors is larger than a predetermined value, and for discriminating an error of a temperature detector, when an error is generated in one of said two exhaust gas temperature datum; and

a reporting means for sending an error generation cause of said combustor searched from said database and/or a correspondence operation information against said error generation, in accordance with a result of said judging by said diagnosis means, to a user of said field power plant.

12. A remote monitoring diagnostic method comprising the steps of:

collecting an exhaust gas temperature of each for plural combustors provided on a gas turbine by a monitoring means installed on a field power plant, and storing said exhaust temperature data for each of said combustors, said exhaust temperature data being collected by said monitoring means, in a data storage file;

judging an error generation in said combustor, when a difference in temperature of two exhaust temperature datum detected from adjacent combustors is larger than a predetermined value, and an error of a temperature detector, when an error is generated in one of said two exhaust temperature datum, according to a diagnostic means; and

sending an error generation cause of said combustor and a correspondence operation information for said error generation, which is searched from a database, in which data relating a similar phenomenon of past error generation of said combustor of said gas turbine and a correspondence operation against said error generation are stored, according to a judged result of said diagnostic means, to a user of said power plant by a reporting means.