Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Anticipating contingengies in power grids using fast neural net
  screening   We address the problem of maintaining high voltage power transmission
networks in security at all time. This requires that power flowing through all
lines remain below a certain nominal thermal limit above which lines might
melt, break or cause other damages. Current practices include enforcing the
deterministic "N-1" reliability criterion, namely anticipating exceeding of
thermal limit for any eventual single line disconnection (whatever its cause
may be) by running a slow, but accurate, physical grid simulator. New
conceptual frameworks are calling for a probabilistic risk based security
criterion and are in need of new methods to assess the risk. To tackle this
difficult assessment, we address in this paper the problem of rapidly ranking
higher order contingencies including all pairs of line disconnections, to
better prioritize simulations. We present a novel method based on neural
networks, which ranks "N-1" and "N-2" contingencies in decreasing order of
presumed severity. We demonstrate on a classical benchmark problem that the
residual risk of contingencies decreases dramatically compared to considering
solely all "N-1" cases, at no additional computational cost. We evaluate that
our method scales up to power grids of the size of the French high voltage
power grid (over 1000 power lines).

18
The categories of this paper are: econ
7
The categories of this paper are: hep-th
28
The categories of this paper are: alg-geom
19
The categories of this paper are: eess
23
The categories of this paper are: solv-int
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
35
The categories of this paper are: mtrl-th
20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
6
The categories of this paper are: astro-ph
21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
2
The categories of this paper are: math
15
The categories of this paper are: nucl-ex
30
The categories of this paper are: q-alg