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Micro-grid architecture design is the basis of the micro-grid construction. It is necessary to follow certain design principles when designing micro-grid architecture, which differs from traditional distribution network designing. This paper describes several micro-grid architecture design principles, taking into consideration in the partition and hierarchy principle, as well as resource utilization...
In this paper, familiar means of energy storage are compared with respect to both performance and cost, on the basis of which some general rules are discussed on how to select proper energy storage means. Based on integrative analysis of capacity-fluctuation's impact on system and customers, some technical requirements of energy storage capacity configuration are determined. Proper capacity proportion...
A novel hybrid supplying system with DG based on the concept of energy pool is proposed in the paper. The hybrid supplying system consists of two layers: the dc layer collects unconstant power provided by distributed energy sources and forms an energy pool with some energy storage units; and the ac layer connects to the common power grid and exchanges energy as needed between the local supplying system...
After analyzing typical structure of microgrids with distributed energy sources, a new idea of microgrid based on "DC energy pool" is proposed in the paper, whose energy exchanging process is also discussed. The new idea lays stress on the skillfully control of energy stored in the energy-storage device. Since the power balance within the microgrid is realized in a way with the help of distributed...
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