Basic Open-Source Nonlinear Mixed Integer Programming Based Dynamic Economic Dispatch of Multi-chiller Plants

Abstract

During the extremely hot weather or sudden transient heat waves, air-conditioning systems are the most common energy consumers in the different residential, commercial, industrial, and administrative buildings especially in the tropical regions. Therefore, the economic operation of the cooling systems such as chiller plants will be an effective way to mitigate total electricity requirements of central air-conditioners.

Nomenclature

α _i , β _i , γ _i , ζ _i :

Coefficients related to the operating characteristic of chiller i

CL^t :

Cooling demand after implementation of DRPs at time horizon t

N :

Number of chillers

${P}_t^{\mathrm{ch}}$ :

Total electrical power consumed by all centrifugal chillers at time t

${\mathrm{PLR}}_i^t$ :

Partial load ratio (PLR) of chiller i at time horizon t

RT _i :

Capacity of chiller i

${U}_i^t$ :

A binary decision variable that will be equal to 1, if ith chiller is on; otherwise it will be 0