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A promising topology to interconnect the wind power plants is proposed. Advantages of series-connected system over ordinary parallel system are first discussed, and control strategies for the series-connected system are studied to realize an optimum use of the wind energy. The dynamic performances of the series-connected system are investigated through simulation and experiments. An effective method...
Dynamic control for a wind turbine generating system consisting of series connected five wind generators and a current source thyristor inverter is discussed. It is shown that tip speed ratios of the individual turbine can be controlled almost constant at an optimum condition with the proposed method, making an effective operation of the system possible. Experimental investigations are also discussed...
This paper presents a discussion on architecture-oriented assurance technology in Micro grid. We analyzed the characteristic of Micro grid from evolutional view, and proposed the concept of architecture-oriented assurance technology in Micro grid from the technology evolution and policy evolution. Technology evolution contained Function Evolution, Role Changing Autonomy and Role Coordination. Policy...
Existing distribution networks have not been designed to accept extensive DG. The actual paradigm may change in the near future impelled by a word wide increasing of DG penetration in distribution grids. This paper presents the status and content of DG Spanish legislative documents. Fundamental considerations are first discussed, exclusively regarding the grid-interconnection requirement. This paper...
A typical micro-grid with multi-energy generators (MGMEG) is composed of renewable energy generation systems including wind, photovoltaic, biomass etc., and fuel cells, energy storages and local loads. The most important feature of a MGMEG is its ability to separate and isolate itself from the utility system, during a utility grid disturbance. Power electronic interfaces, typically voltage source...
This paper presents a microgrid paradigm with both DC and AC links, which may provide an effective way to integrate a heterogeneous set of small-size distributed energy resources into the existing electric power infrastructure. The collection of aggregated energy resource units at each level represents those distributed resources to the upper level as a single self-regulated entity (as a DC or AC,...
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