Optimal operation for ice-storage air-conditioning system using decomposition-coordination model

The main purpose of this study is to present a method which a double layer decomposition-coordination optimal distribution of cold load is applied to the ice-storage air- conditioning system. The optimization model is developed with the minimum total operational cost acting as the objective function. A day is divided into a certain number of independent but mutually correlative periods of time, through optimizing distribution of cold load in difference period the minimum operational cost can be implemented. And the effect of the electricity bills in different period time is also considered when the optimization model is established. In order to demonstrate the decomposition-coordination method outperform conventional operational strategy, a comparisiom is carried out between conventional strategy and optimal strategy. The calculated results show the optimization distribution of cold land call save much in electricity cost comparing with conventional operational strategy.