IEEE Power & Energy Magazine - May/June 2015 - 94

It is estimated
that 65
million smart
meters will
be installed
nationwide
by 2015.

system. The capacity of
microgrids is increasing from a few megawatts to the higher
level of 100 MW in the
future. As microgrids
become larger and better control capabilities
are equipped, they can
be viewed as "virtual
feeders" of the distribution systems. In other
words, microgrids can be deployed to pick up critical loads and services outside their territory. The new
strategy will require both power grids and microgrids
to evaluate the technical feasibility and cost benefit.
Microgrids and distributed energy resources increase
the redundancy of energy resources, leading to a
higher capability to serve critical loads and services.
The technical issues involve the feeder voltage/reactive power control as well as active and reactive power
capabilities of the generation sources. There are also
regulatory issues to address; for example, a microgrid
is not a qualified utility company, and therefore it cannot serve customers outside its area.

Further Automation

www.reefindustries.com

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TOLL FREE 1.800.231.6074

since 2009, the u.s. Department of energy and
the power industry have collaborated to implement about a hundred smart grid Investment grant
(sgIg) projects. As a result, the number of automated switches with remote monitoring and control capabilities has increased significantly. As of
March, 2013, almost 8,000 automated switches have
been installed through the sgIg projects. It is estimated that 65 million smart meters will be installed
nationwide by 2015. These new capabilities for
service restoration and the vast amount of information generated by the smart meters are highly
valuable for the residency of distribution systems.
A minimum set of remote-controlled switches can
be derived to achieve the maximum capability to
restore service in a distribution system, i.e., the concept of design for maximum restoration capability.
The function of outage reporting for smart meters
can enhance the identification of fault(s) in a distribution system, replacing traditional trouble call
handling techniques. The flexible reconfiguration
of distribution feeders under an extreme operating
condition allows the load to be served by a number
of electrical islands. By doing so, the propagation of
disturbances can be contained.
p&e



http://www.reefindustries.com

Table of Contents for the Digital Edition of IEEE Power & Energy Magazine - May/June 2015

IEEE Power & Energy Magazine - May/June 2015 - Cover1
IEEE Power & Energy Magazine - May/June 2015 - Cover2
IEEE Power & Energy Magazine - May/June 2015 - 1
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IEEE Power & Energy Magazine - May/June 2015 - 93
IEEE Power & Energy Magazine - May/June 2015 - 94
IEEE Power & Energy Magazine - May/June 2015 - 95
IEEE Power & Energy Magazine - May/June 2015 - 96
IEEE Power & Energy Magazine - May/June 2015 - Cover3
IEEE Power & Energy Magazine - May/June 2015 - Cover4
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