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With the rapid development of the distributed energy resource (DER) technology, the DER systems have been utilized gradually in the buildings with the different functions. Compared with the traditional central energy supply, it has many benefits, including the energy-saving, economy, environmental protection. However, there are complex interrelationships among these factors: mutual promotion, maybe mutual restraint. Therefore, it is necessary to discuss how to balance these factors in the integration stage of DER system. In this paper, a multi-objective linear programming model (MLPM) for DER system has been developed to optimize these objectives simultaneously to the certain constraints. The simplex algorithms is employed to search the solution quickly and effective. Meanwhile, the capacities and operational strategies of the DER equipments and the heating -source equipments also can be selected according to the trade-off analysis method. This model is helpful to bring the DER system to the full potential by the rational planning under the premise satisfying the various requirements. In addition, a case study is presented to verify the effectiveness of the multi-objective optimal method from the different evaluation criterions.

STUDY ON MULTI-OBJECTIVE OPTIMAL METHOD IN THE PLANNING OF DISTRIBUTED GENERATION AND HEAT SOURCE TECHNOLOGIES