With the increasingly developing construction industrialization in China, the management issue of architecture prefabricated components supply chain has been concerned. Because of the particularity of prefabricated architecture, it claims a tight connection among plan design, components production, logistics, site construction, and maintenance. The coordination problems among the supply chain will increase costs of the upstream and downstream enterprises. Based on the collaborative supply logistics theory, multi-Agent modeling, simulation technology, this paper uses multi-Agent platform to simulate interactive among component factories, assembly center and assemblers and seek for the optimal strategy. Firstly, the basic definition of collaborative supply logistics theory will be introduced, then a prefabricated construction supply chain stimulation model will be established. Finally, in the case study, the simulation model will be applied to a real tunnel construction case and provide the basis for decision making management.
In this paper, a new type fault current limiter (FCL) topology is put forward for Micro-Grid (MG) system fault, which mainly consists of limiting inductance, bypass inductance and series compensation capacitors. The switching circuit is used to change circuit structure through the power diode bridge and FGCT, in the event of a fault the current limiting inductance is switched to limit short-circuit current. The topology has the advantages of switch quickly, simple control, and series compensation effect. Establishes a equivalent model of MG system with FCL, discusses the impact of FCL installation location to system short-circuit protection, and proposes the installation location program. Matlab is used for system modeling and simulation results show that the effect of the current limiter, which is installed on the outlet of the MG system power for three-phase short-circuit protection, is obvious, and has the function of inhibiting voltage sag.
The paper presents the concept and structure of micro grid technology based on distributed generation, and especially introduces the key technology of micro network which includes five parts: micro-grid planning and design, micro-grid communication technology, micro-grid power electronic technology, micro-grid control and energy management system. At last problems need to be solved in the future have been put forward and discussed in this paper.
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