Smart
Grid Advanced Metering Applications
Abstract—
In this paper, we present
a multi-gate mesh network architecture that has been developed to ensure high
performance and reliability under emergency conditions when a system expects to
receive power outage notifications and exchanges. In order to handle the
metering traffic, under time varying outage conditions we introduce a
multi-gate and single-class back-pressure based scheduling algorithm, which
takes into account both the hopcount, as well as the queue length of each mesh
node. An important requirement of this algorithm is that all the meter nodes
should always maintain a separate path to each gateway. We first quantify the
stability region of the network when our novel algorithm is applied to schedule
the packets. We then present a numeric analysis to prove that the overall
network delay is reduced as a result of employing the proposed scheduling
algorithm. Moreover, we also theoretically prove that the network is always
able to remain stable as long as the arrival rate vector lies inside the
stability region provided by our scheduling algorithm. Finally, we derive a
distributed objective function that is adopted by the practical implementation
of the packetscheduling scheme. The simulation results indicate that under the
context of the multi-gate network, our packet-scheduling scheme can indeed
significantly improve the network’s reliability and delay performance, which
are important factors under outage conditions.
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