Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Need-based Communication for Smart Grid: When to Inquire Power Price?   In smart grid, a home appliance can adjust its power consumption level
according to the realtime power price obtained from communication channels.
Most studies on smart grid do not consider the cost of communications which
cannot be ignored in many situations. Therefore, the total cost in smart grid
should be jointly optimized with the communication cost. In this paper, a
probabilistic mechanism of locational margin price (LMP) is applied and a model
for the stochastic evolution of the underlying load which determines the power
price is proposed. Based on this framework of power price, the problem of
determining when to inquire the power price is formulated as a Markov decision
process and the corresponding elements, namely the action space, system state
and reward function, are defined. Dynamic programming is then applied to obtain
the optimal strategy. A simpler myopic approach is proposed by comparing the
cost of communications and the penalty incurred by using the old value of power
price. Numerical results show the significant performance gain of the optimal
strategy of price inquiry, as well as the near-optimality of the myopic
approach.

32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
24
The categories of this paper are: dg-ga
8
The categories of this paper are: hep-ex
0
The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
7
The categories of this paper are: hep-th