Abstract
As distributed energy based microgrids with combined cooling, heating and power are gradually connected to the main grid, and forming a certain range of regional microgrid clusters, it is of great significance to investigate the system optimal dispatch in the microgrid interconnection scenario. In this paper, an optimal dispatch model of multimicrogrids system with combined cooling, heating and power is proposed, which considers the cross-microgrid power interaction. Through the collaborative optimization of the power interactions between microgrids and the output powers of energy devices, the overall economic benefit of the multimicrogrids system is effectively improved. The optimization objective of the model is to minimize the total operation cost of the multi-microgrids system with combined cooling, heating and power. The effectiveness of the proposed model is verified by comparing the system cost and device output powers of multimicrogrids system under no power interaction (single-microgrid) and with power interaction (cross-microgrid) mode between microgrids. Furthermore, this paper profoundly analyzes the influence of energy price and transmission cost between microgrids on the operation characteristics of multi-microgrids system.
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