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
Genichi Emoto
Seiji Nakagawa
Application Number:
JP25910098A
Publication Date:
March 29, 2006
Filing Date:
August 31, 1998
Export Citation:
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 |
Other References:
喜多洋一 飯野穣 石原富美子,自家発電設備の省エネルギー運用を支える最適化技術,東芝レビュー,日本,1998年 4月,Vol.53 NO.4,p.59-p.61
谷哲次 加藤清三,自家発電プラントのオンライン最適化制御システム,出光技報,日本,1990年,33巻5号,p.42-p.46
飯野穣 重政隆 山本明人,モデル予測制御システム MIPCON,東芝レビュー,日本,1995年,Vol.50 No.2,p.131-p.134
谷哲次 加藤清三,自家発電プラントのオンライン最適化制御システム,出光技報,日本,1990年,33巻5号,p.42-p.46
飯野穣 重政隆 山本明人,モデル予測制御システム MIPCON,東芝レビュー,日本,1995年,Vol.50 No.2,p.131-p.134
Attorney, Agent or Firm:
Yasuo Yokokura