Interdependent critical infrastructure and generation assets tend to cluster around communities (i.e., load centers) and can be combined into an Enclave Microgrid as shown in the graphic above.
Enclave Microgrids can support facilities on either the transmission or distribution grid including at transmission voltages. Traditional microgrids, by contrast, are typically connected through Points of Common Coupling only to the distribution network at lower voltages. Traditional microgrids within a community, however, can be embedded within an Enclave Microgrid.
Enclave Microgrids provide several unique security advantages:
The potential for a layered defense goes even deeper than the regional grid and an Enclave Microgrid. It could also include traditional microgrids within the Enclave Microgrid as well as hardening of facilities, especially critical infrastructure, served by the Enclave Microgrid, as illustrated below. Community microgrids, in particular, could be useful to this layered defense.
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