Results 231 to 240 of about 8,005,176 (313)

Reactive Power P&O Anti-Islanding Method for a Grid-Connected Inverter With Critical Load

IEEE transactions on power electronics, 2019
A grid-connected inverter with critical loads should be able to supply a stable voltage to critical loads at the instant of a mode change as well as during clearing time while quickly detecting unintentional islanding.
Sungyoul Park, Minho Kwon, Sewan Choi
semanticscholar   +1 more source

Graph Theory and Critical Load-Based Distribution System Restoration using Optimal Microgrids Formation

Prague Stringology Conference, 2018
Customer survivability and well-being can be enhanced, after a natural disaster, by efficiently restoring critical loads in a distribution system. Microgrids with distributed generation can improve resilience in case of power outages caused by natural ...
Anand Kumar, S. Grijalva
semanticscholar   +1 more source

Nitrogen critical loads using biodiversity-related critical limits

Environmental Pollution, 2011
Critical loads are widely used in the effects-based assessment of emission reduction policies. While the impacts of acidification have diminished, there is increasing concern regarding the effects of nitrogen deposition on terrestrial ecosystems. In this context much attention has been focussed on empirical critical loads as well as simulations with ...
Posch, M, Aherne, J, Hettelingh, JP
openaire   +3 more sources

Regionalization of Critical Loads Under Uncertainty

Water, Air, & Soil Pollution, 1995
The steady-state model PROFILE was used to perform Monte Carlo simulations of critical loads of acidity and exceedances of forest soils for 128 sites in the province of Scania, southern Sweden. Statistical tests showed that 100 sites had normal distributed critical loads and exceedances and that the variance of these parameters was statistically equal ...
Andreas Barkman, Per Warfvinge, Harald Sverdrup   +2 more
openaire   +1 more source

Maxwell Critical Loads for Axially Loaded Cylindrical Shells

Journal of Applied Mechanics, 1993
It is proposed that the classical Maxwell criterion for instability of gradient systems has significance as a lower bound on the appearance of localized as opposed to repeated periodic buckling. The hypothesis is tested against experiments, for the classic nonlinear problem of diamond-pattern buckling in the long thin axially loaded cylindrical shell ...
G. W. Hunt, E. L. Neto
openaire   +1 more source

Critical loads ? Possibilities and constraints

Water, Air, & Soil Pollution, 1995
Since critical thresholds for acidic deposition were first considered in the 1970s, the critical loads approach has rapidly evolved into a practical tool for addressing the problems of pollution control. It has gained acceptance from many scientists and policy makers, bridging the gap between science and policy and proving its use with the acidifying ...
openaire   +2 more sources

An introduction to critical loads

Environmental Pollution, 1992
The critical loads approach to emission controls of gaseous pollutants is a concept with a short but eventful history. Despite difficulties with definitions and agreed values, its acceptance within the UN-ECE Convention on Long Range Transboundary Air Pollution has provided the impetus for developing methods to put critical loads to a practical use-the
openaire   +2 more sources

Critical Loading Parameters for Plates

Journal of Mathematical Sciences, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

On critically loaded loss networks

Advances in Applied Probability, 1989
This paper studies the behaviour of large loss networks, paying particular attention to links at a certain critical loading where the load offered very nearly matches capacity. We correct and extend an earlier central limit theorem for the stationary distribution of a loss network with critically loaded links.
P. J. Hunt, F. P. Kelly
openaire   +1 more source

Storing power for critical loads

IEEE Spectrum, 1993
The operation of systems for superconducting magnetic-energy storage (SMES) is explained. The original goal was systems storing thousands of megawatts of back-up electricity for several hours at a time, to help utilities meet peak power demands. The first commercially available unit rapidly stores and delivers much less electricity over much briefer ...
C. DeWinkel, J.D. Lamoree
openaire   +1 more source