Patent ID: 6223101
Filing Date: 2001-04-24
Classification: G05B

Abstract:
A district heat supply plant controller for controlling operation of a district heat supply plant having a plurality of heat source devices, comprising:storage means for storing past actual thermal load values of said district heat supply plant;prediction means for predicting a thermal load value of a current day with reference to the past actual thermal load values stored in said storage means;planning means for determining an operation plan of said district heat supply plant on the basis of said thermal load value of the current day predicted by said prediction means, said planning means including genetic algorithm executing means for determining an operation plan of said district heat supply plant by genetic algorithms minimizing objective functions about operation of said heat source devices and for applying genetic algorithms to an individual having rows of genes representing activated and stopped states for each predetermined time unit for each of said heat source device, said planning means further including genetic modification means for selecting rows of genes not satisfying predetermined constraint conditions from said rows of genes manipulated by said genetic algorithm executing means and for modifying states of genes not satisfying the constraint conditions among those contained in the selected rows of genes; andcontrol means for controlling said heat source devices on the basis of the operation plan of said district heat supply plant determined by said planning means.