Archivo para febrero 5th, 2016


What is not a microgrid Sample cases

In Figure, the microgrid concept is further clarified by examples that highlight three essential microgrid features: local load, local microsources and intelligent control. In many countries environmental protection is romoted by the provision of carbon credits by the use of RES and CHP technologies; this should be also added as a microgrids feature. Absence of one or more features would be better described by DG interconnection cases or DSI (Demand Side integration) case.

Source:
Nikos Hatziargyriou. “Microgrids Architectures and Control”. 2014 John Wiley and Sons Ltd. ISBN: 978-1-118-72068-4.

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large variety of scales of the microgrids

A microgrid appears at a large variety of scales: it can be defined at the level of a LV grid, a LV feeder or a LV house – examples are given in Figure. As a microgrid grows in scale, it will likely be equipped with more balancing capacities and feature better controllability to reduce the intermittencies of load and RES. In general, the maximum capacity of a microgrid (in terms of peak load demand) is limited to few MW (at least at the European scale, other regions may have different upper limits, see Chapter 6). At higher voltage levels, multimicrogrid concepts are applied, implying the coordination of interconnected, but separate microgrids in collaboration with upstream connected DGs and MV network controls. The operation of multi-microgrids)…

Source:
Nikos Hatziargyriou. “Microgrids Architectures and Control”. 2014 John Wiley and Sons Ltd. ISBN: 978-1-118-72068-4.