The Modification and Application of Multi-period and Multi-equipment Utility System Optimization Model

An improved mixed integer bilinear optimization model of multi-period and multi-equipment utility system is proposed in this paper,which includes two types of optimization variables and distract dynamic constraints for systems operation and aims to obtain minimum cost consisting of capital investment and total period running cost.To simplify solution procedure of the improved optimization model,the presented model is divided into many continuous variable linear program decomposed models.The equivalence analysis and major mathematical properties between the improved optimization model and decomposed models are described in detail,which are theoretical basis for constructing effective optimization algorithm.Finally,the proposed method is used to design a utility system for a chemical industrial plant.