Results 291 to 300 of about 2,065,537 (339)

Security for space power systems

IEEE Transactions on Power Systems, 1990
An initial system security monitor (SSM) developed for the power system of a proposed US National Aeronautics and Space Administration (NASA) permanently manned space station is presented. Four types of ranked disturbances or faults to the transmission system are successively corrected by remedial action of the SSM.
G.L. Kusic, W.H. Allen, E.W. Gholdston, R.F. Beach   +3 more
openaire   +1 more source

System-aware security for nuclear power systems

2011 IEEE International Conference on Technologies for Homeland Security (HST), 2011
As shown in the recently publicized Stuxnet attack in Iran, there are significant threats of embedded infections by the producers of equipment that support our nations nuclear power plants that cannot be completely addressed by advancing perimeter security solutions.
Rick A. Jones, Troy V. Nguyen, Barry M. Horowitz   +2 more
openaire   +1 more source

Reactive power market development considering power system security

Electrical Engineering, 2010
In the new open access environment, in pursuit of profit, power producers tend to operate closer to the security boundaries and consequently, the voltage instability, which is caused by insufficient reactive power support, threats system security and reliability.
Abdorreza Rabiee, Nima Amjady, Heidarali Shayanfar   +2 more
openaire   +1 more source

Reactive Power Dispatching for Power System Voltage Security

IEEE Transactions on Power Apparatus and Systems, 1983
An optimization-based method is presented for determining the scheduling of reactive equipment (capacitors for example) on an hourly basis for maximum steady-state power system security during normal and post-contingency conditions. The method simultaneously deals with the effects of a number of contingencies, and includes all bus voltages as ...
R. E. Palmer, R. C. Burchett, H. H. Happ, D. R. Vierath   +3 more
openaire   +1 more source

Enhancing power system security control

IEEE Computer Applications in Power, 1997
This article presents a new concept for expanding the scope of power system security functions in an EMS control center, an approach which combines automatic learning applied to dynamic security analysis and a changeover of the conventional operator training simulator (OTS) into a dynamic OTS. Automatic learning is shown to be suitable for power system
openaire   +1 more source

Power system security by Corrective Switching

2010 IREP Symposium Bulk Power System Dynamics and Control - VIII (IREP), 2010
Limit violations may occur by power systems operation, such as: voltage level at buses, loadings of transmission lines and power transformers, etc‥ If violations are detected in the supervision process, corrective measures may be carried out in order to eliminate them or to reduce their intensity. Loading shedding is an extreme solution and should only
Manoel Firmino de Medeiros, Arrhenius Vinicius da Costa Oliveira   +1 more
openaire   +1 more source

Cyber security in power electronic systems

2021
Grid-connected power electronic converters are crucial technologies that allow the electrical grid to interface renewable energy sources, energy storage systems, electrical vehicles, microgrids, and high-voltage DC transmission lines. As the number of power electronic converters in modern grids continues to grow, their monitoring and coordinated grid ...
openaire   +2 more sources

Securing Electrical Power System Operation

2009
Automation in power systems has a very long tradition. Just recall the flyball governor in a steam engine and it becomes clear that power people have been using control principles and instruments for more than a century. There are, however, new challenges in power generation and transmission concerning the security and efficiency of those services that
openaire   +1 more source

Prediction of Power System Security Levels

IEEE Transactions on Power Systems, 2009
In the paper, Markov chains in conjunction with Monte Carlo simulation are used to predict the power system security level. The new approach uses a Markov chain for each identified security range to track the development of security level through time. Based on the forecasted and recorded data, the proposed procedure offers a useful tool to the system ...
Suad S. Halilcevic, Ferdinand Gubina, Andrej F. Gubina   +2 more
openaire   +1 more source

Real-time power system security classifier

Proceedings of the 1998 Second IEEE International Caracas Conference on Devices, Circuits and Systems. ICCDCS 98. On the 70th Anniversary of the MOSFET and 50th of the BJT. (Cat. No.98TH8350), 2002
In this paper, a "Real Time Power System Security Classifier" is presented. The classifier combines energy margin evaluations with simulations on the University of British Columbia's Real-Time Power System Simulator, as well as with fuzzy logic techniques for the decision making process.
M.P. de Arizon, J.R. Marti
openaire   +1 more source