Results 271 to 280 of about 180,789 (314)
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Security for space power systems
IEEE Transactions on Power Systems, 1990An 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 +3 more
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IEEE PES Innovative Smart Grid Technologies, Europe, 2014
This paper proposes a method of evaluating the N-1 security quantitatively with increased PV penetration. The authors applied the concept of Robust Power System Security (RS) proposed by us to this method. By using Robust Dynamic Security region (RDS), which is based on this concept and the key region for judging the security, we can evaluate the power
Yoshiharu Okumoto +5 more
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This paper proposes a method of evaluating the N-1 security quantitatively with increased PV penetration. The authors applied the concept of Robust Power System Security (RS) proposed by us to this method. By using Robust Dynamic Security region (RDS), which is based on this concept and the key region for judging the security, we can evaluate the power
Yoshiharu Okumoto +5 more
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Dynamic security enhancement in power-market systems
IEEE Power Engineering Society Summer Meeting,, 2002Summary form only given as follows. The work presented in this paper describes a scheme for rescheduling pool generation and adjusting contract-transactions for dynamic security enhancement when necessary, using a power market auction mechanism. The procedure is based on the transient energy margin concept, which is estimated using the corrected hybrid
A. K. David, X. Lin
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Steady-State Security Regions of Power Systems
IEEE Transactions on Circuits and Systems, 1982A steady-state security region is a set of real and reactive power injections (load demands and power generations) for which the power flow equations and the security constraints imposed by equipment operating limits are satisfied. The problem of determining steady-state security regions is formulated as one of finding sufficient conditions for the ...
Wu, Felix F., Kumagai, Sadatoshi
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Impacts of Wind Power Generation on Static Security of Power System
2019 16th International Multi-Conference on Systems, Signals & Devices (SSD), 2019While renewable resources contribute in the diversification of power supply, they also impose some challenges on power system operation. As a producer of a large part of the green energy, the wind turbine has a great impact on the static security of the power systems.
Hajer Jmii, Asma Meddeb, Souad Chebbi
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System-aware security for nuclear power systems
2011 IEEE International Conference on Technologies for Homeland Security (HST), 2011As 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 +2 more
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An expert system for power system security control
Conference Papers Power Industry Computer Application Conference, 2003The authors describe an expert system which assists the security control of an electric power system. The expert system first judges the power system operating conditions based on its voltage profile and line flow patterns and then displays possible control actions to be chosen by operators.
H. Sasaki, N. Yorino, R. Yokoyama
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Reactive Power Dispatching for Power System Voltage Security
IEEE Transactions on Power Apparatus and Systems, 1983An 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 +3 more
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Power System Dynamic Security Region and Its Approximations
IEEE Transactions on Circuits and Systems I: Regular Papers, 2006Dynamic security region (DSR) for security assessment and preventive control is defined in terms of variables that are under the control of the dispatcher prior to a fault. The boundary of DSR can be expressed using the function describing the stable manifold of the controlling unstable equilibrium point.
Mei, S, Lu, Q, Wu, FF, Xue, A
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A Distributed Architecture for Online Power Systems Security Analysis
IEEE Transactions on Industrial Electronics, 2004Phenomena that can compromise power systems operation need to be carefully analyzed in order to evaluate their impact on the security and reliability levels of the electrical networks. The real-time assessment of the system's security and reliability levels, especially under unforeseen contingencies, is known as online power system security analysis ...
Michele Di Santo +3 more
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