STEAM TURBINE, CONTROL METHOD, AND PROGRAM

Title:

STEAM TURBINE, CONTROL METHOD, AND PROGRAM

Document Type and Number:

WIPO Patent Application WO/2016/038988

Kind Code:

A1

Abstract:

A steam turbine is provided with an electric motor, a plurality of controller units, a status storing unit, and a master controller. The electric motor drives a regulating valve for controlling the opening and closing of a stream passage in which steam supplied to a turbine body is circulated. The plurality of controller units control the drive of the electric motor. The status storing unit stores a parameter indicating a status of the steam turbine. When there is an abnormality in a controller unit that is controlling the drive of the electric motor, the master controller switches the controller unit to a controller unit among the controller units that is not controlling the electric motor, and causes the relevant controller unit to operate after rewriting the parameter to a parameter stored by the status storing unit before the abnormality had occurred.

Inventors:

KONO TAKAYUKI (JP)
MORITA KATSUAKI (JP)
KATAGAKE MAKOTO (JP)

Application Number:

PCT/JP2015/068847

Publication Date:

March 17, 2016

Filing Date:

June 30, 2015

Export Citation:

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Assignee:

MITSUBISHI HEAVY IND LTD (JP)
MITSUBISHI HEAVY IND COMPRESSOR CORP (JP)

International Classes:

F01D17/10; F01D17/00; F01D25/00

Foreign References:

JPS59190406A	1984-10-29
JPS60233301A	1985-11-20
JPH07230301A	1995-08-29
JPH01142801A	1989-06-05
JP2002215201A	2002-07-31
JPH07175675A	1995-07-14
JPH10222203A	1998-08-21
JP2000161010A	2000-06-13
EP0668552A1	1995-08-23
US6480780B1	2002-11-12

Other References: