We present experiments with combined reactive and
resistive loads on a testbed based on the Controlled-Delivery
power Grid (CDG) concept. The CDG is a novel data-based
paradigm for distribution of energy in smart cities and smart
buildings. This approach to the power grid distributes controlled
amounts of power of loads following a request-grant protocol
performed through a parallel data network. This network is
used as a data plane that notifies the energy supplier about
requests and inform loads of the amount of granted power. The
energy supplier decides the load, amount, and the time power is
granted. Each load is associated with a network address, which
is used at the time when power is requested and granted. In
this way, power is only delivered to selected loads. Knowing the
amount of power being supplied in the CDG requires knowing
the precise amount of power demand before this is requested.
While the concept works well for an array of resistive loads,
it is unclear how to apply it to reactive loads, such as motors,
whose power consumption varies over time. Therefore, in this
paper, we implement a testbed with multiple loads, two light
bulbs as resistive loads and an electrical motor as a reactive
load. We then propose to use power profiles for the adoption of
the request-grant protocol in the CDG concept. We adopt the use
of power profiles to leverage the generation of power requests
and evaluate the efficiency of the request-grant protocol on the
amount of supplied power. In addition, the deviation of delivered
power in the data and power planes is evaluated and results show
that the digitized power profile of the reactive loads enables the
issuing of power requests for such loads with high accuracy.
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Reducing Frequency of Request Communications with Pro-Active and Aggregated Power Management for the Controlled Delivery Power Grid
We present a feasibility analysis of the controlled delivery power grid (CDG) that uses aggregated power request by users to reduce communications overhead. The CDG, as an approach to the power grid, uses a data network to communicate requests and grants of power in the distribution of electrical power. These requests and grants allow the energy supplier know the power demand in advance and to designate the loads and the time when power is supplied to them. Each load is assigned a power-network address that is used for communication of requests and grants with the energy supplier. With addressed loads, power is only delivered to selected loads. However, issuing a request for power before delivery takes place requires knowing the demand of power the load consumes during the operation interval. However, it is a general concern that having issuing requests in a time-slot basis may risk request losses and therefore, generate intermittent supply. Therefore, we propose request aggregation to minimize the number of requests issued. We show by simulation that the CDG with request aggregation attains high performance, in terms of satisfaction ratio and waiting time for power supply.
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- Award ID(s):
- 1641033
- NSF-PAR ID:
- 10064692
- Date Published:
- Journal Name:
- 2017 IEEE 14th International Conference on Mobile Ad Hoc and Sensor Systems (MASS)
- Page Range / eLocation ID:
- 594 to 598
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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- Free Publicly Accessible Full Text
-
Accepted Manuscript1.0
- Conference Paper:
- https://doi.org/10.1109/MASS.2017.104
