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Title:
METHOD AND DEVICE FOR CONTROLLING OPTIMUM OPERATION OF POWER PLANT
Document Type and Number:
Japanese Patent JP3761337
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To carry out the optimalizing control of each power-generation element by multivariable-model prediction control, by estimating a parameter incapable of being directly measured on the basis of the physical models of the power-generation elements and the quantity of state of an input process, and determining optimum-load distribution minimizing the cost of the whole power-plant.
SOLUTION: In an optimalizing arithmetic section 114 in an optimalizing system 110, optimalizing arithmetic operation for minimizing the running cost of the whole power-plant is conducted on the basis of the quantity of the state of the power-plant, a parameter estimated by a parameter estimation arithmetic section 112 and the physical model 113 of the power-plant by a mathematical programming method. In a multivariable control system 120, on the other hand, the optimum load of a boiler and the load of a turbine taken in by an optimalizing arithmetic-result input section 122 are taken in by a multivariable control operation section 123, and set as the set values of control operation. In a multivariable control operation section 123, the quantities of states of processes are taken in as a control variable, a disturbance variable and an operation variable, and multivariable control is conducted while using optimalizing arithmetic results as set values.


Inventors:
Kaoru Fujita
Genichi Emoto
Seiji Nakagawa
Application Number:
JP25910098A
Publication Date:
March 29, 2006
Filing Date:
August 31, 1998
Export Citation:
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Assignee:
Mitsubishi Chemical Corporation
International Classes:
H02J3/00; H02J3/38; G05B11/36; G05B13/02; G05B13/04; H02J3/46; H02P9/00; (IPC1-7): H02J3/00; G05B11/36; G05B13/04; //H02P9/00
Domestic Patent References:
JP9179604A
JP7238803A
JP2086905A
JP3017204U
Foreign References:
Attorney, Agent or Firm:
Yasuo Yokokura