Diffuser multi-objective control for STEC plant

Author

Zhong, Zhao ; Yasuyuki, Ikegami ; Masatoshi, Nakamura

Author_Institution

Inst. of Ocean Energy, Saga Univ., Japan

Volume

1

fYear

2003

fDate

5-8 Oct. 2003

Firstpage

148

Abstract

Hot spring thermal energy conversion (STEC) is a system to convert the thermal energy into the electrical power using the temperature difference between spring water and sea/river water. In this paper, the diffuser multi-objective control problem of STEC plant is described. Based on the step test, the nonlinear separation model of working fluid dryness and pressure difference between turbine inlet and outlet for STEC plant has been identified. According to the concept of back-off and based on the nonlinear programming, a multi-objective coordination algorithm using the information of process static constraints is proposed. Using the nonlinear separation control method, a solution for STEC diffuser multi-objective control has been proposed. The application results have verified the feasibility and effectiveness of the proposed solution.

Keywords

nonlinear programming; seawater; thermal power stations; 20 to 30 degC; 70 to 80 degC; electrical power; fluid dryness; hot spring thermal energy conversion; multiobjective control; multiobjective coordination algorithm; nonlinear programming; nonlinear separation model; process static constraints; sea/river water; spring water; working fluid; Cities and towns; Energy conversion; Heat pumps; Ocean temperature; Power engineering and energy; Rivers; Springs; Testing; Thermal engineering; Turbines;

fLanguage

English

Publisher

ieee

Conference_Titel

Systems, Man and Cybernetics, 2003. IEEE International Conference on

ISSN

1062-922X

Print_ISBN

0-7803-7952-7

Type

conf

DOI

10.1109/ICSMC.2003.1243806

Filename

1243806