Results 231 to 240 of about 2,070,998 (294)

Power system security assessment

IEEE Power and Energy Magazine, 2004
Security refers to the degree of risk in a power system's ability to survive imminent disturbances (contingencies) without interruption to customer service. It relates to robustness of the system to imminent disturbances and, hence, depends on the system operating condition as well as the contingent probability of disturbances.
K. Morison, L. Wang, P. Kundur
openaire   +3 more sources

Power systems security analysis

2006 IEEE Power Engineering Society General Meeting, 2006
Due to the deregulation consequences (economical imperatives and technical difficulties), the electric power systems operate nowadays close to the security limits. In order to protect the grid against severe contingencies and to increase the security margins, the transmission systems operators have to take special measures.
S. Sterpu, W. Lu, Y. Besanger, N. HadjSaid   +3 more
openaire   +1 more source

VAR Planning for Power System Security

IEEE Power Engineering Review, 1989
A method is presented for identifying a dispersed reactive power (VAr) supply that can enhance power systems' pre- and post-contingency voltage security, subject to technical and economic constraints. The problem is formulated in two stages. The first stage involves a nonlinear optimization problem which minimizes the amount of reactive supply.
O.O. Obadina, G.J. Berg
openaire   +1 more source

Securing Power System State Estimation

2016 IEEE Trustcom/BigDataSE/ISPA, 2016
In power system, state estimation is the basis of protecting and controlling the power grid. However, attackers can interfere the normal state estimating processes by strategically altering certain measurements through false data injection (FDI) attack. To address this problem, a typical solution is deploying a large amount of phasor measurement units (
Jiexin Zhang, Xiaoxue Liu, Peidong Zhu
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Realistic power system security algorithm

IEE Proceedings C Generation, Transmission and Distribution, 1988
The paper presents a security algorithm which consists of the superdecoupled loadflow technique for loadflow solution, outage studies, contingency selection and line overload alleviation. A superdecoupled loadflow method with a distributed slack busbar has been applied to line and generator outage studies as well as for line overload alleviation.
A. Mohamed, G.B. Jasmon
openaire   +1 more source

Reflections on security [power systems]

IEEE Power and Energy Magazine, 2003
The North American Electric Reliability Council (NERC) has been responsible for the reliability of the interconnected grid, of which safety and security are essential ingredients, since 1968. NERC has undertaken several key initiatives (many of which began well before September 11) to focus attention on security matters and to encourage electric power ...
M.R. Gent, L.P. Costantini
openaire   +1 more source

Decoupled Power System Security Dispatch

IEEE Transactions on Power Apparatus and Systems, 1983
This paper presents a methodology for solving the Optimal Load Flow problem. The problem is formulated as a non-linear constrained optimization problem, recognizing system losses; operating limits on the generation units and line security limits. The optimization problem is solved by an iterative scheme.
G. C. Contaxis, B. C. Papadias, C. Delkis   +2 more
openaire   +1 more source