Optimizing control manner and optimizing control device null of the generation of electricity

摘要

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.;COPYRIGHT: (C)2000,JPO