Results 221 to 230 of about 358,699 (263)
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Direct Stability Assessment for excessive acceleration failure mode and validation by model test
Ocean Engineering, 2019Abstract The excessive acceleration is one of five stability failure modes for intact stability being discussed at IMO. The trial calculation for Direct Stability Assessment (DSA) and the model test have been carried out to verify two prediction methods of ship motions in the short-crested irregular waves for DSA.
Hidetaka Houtani, Daichi Ota
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Direct stability assessment: pragmatic solutions
Ship Technology Research, 2017Vladimir Shigunov
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Direct Transient Stability Assessment with Excitation Control
IEEE Power Engineering Review, 1989The authors extended the applicability of the transient energy function method by incorporating the exciter effects in the energy of a multimachine power system during the first swing transient. The generator was represented by the two-axis model and the exciter was represented by one gain, one time constant, and one limiter. In this study they compute
A.-A.A. Fouad +7 more
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A mixed direct method for transient stability assessment
Journal of the Chinese Institute of Engineers, 1993Abstract A mixed direct method taking the advantages of both the potential energy boundary surface (PEBS) method and the extended equal area criterion (EEAC) method for transient stability analysis of multimachine power systems with detailed models is presented.
Hong‐Chan Chang, Hong‐Cheng Chen
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Gait & Posture, 2015
For maintaining heading direction while walking we heavily rely on vision. Therefore, walking in the absence of vision or with visual attention directed elsewhere potentially leads to dangerous situations. Here we investigated whether tactile information from the feet can be used as a (partial) substitute for vision in maintaining a stable heading ...
Nanda Pluijter +3 more
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For maintaining heading direction while walking we heavily rely on vision. Therefore, walking in the absence of vision or with visual attention directed elsewhere potentially leads to dangerous situations. Here we investigated whether tactile information from the feet can be used as a (partial) substitute for vision in maintaining a stable heading ...
Nanda Pluijter +3 more
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A fast accurate method for direct assessment of transient stability
26th IEEE Conference on Decision and Control, 1987A direct stability assessment method that can act as a fast screening tool for determining retention or loss of stability is becoming of increasing interest in system planning, operation planning and on-line control center applications. In this paper, a fast, accurate method for determining retention or loss of stability without requiring time ...
R. Schlueter, J. Lo, A. Yazdankhah
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Direct Methods of Stability Analysis in Dynamic Security Assessment
IFAC Proceedings Volumes, 1984Abstract Direct methods of stability analysis have been intensely investigated over the past two decades and are now found practicable in obtaining accurate critical breaker clearing times for a given fault. Obtaining this information on-line is only an indirect way of ascertaining robustness of the system.
M.A. Pai, P.W. Sauer, K.D. Demaree
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Assessment of propeller influence on lateral-directional stability of multiengine aircraft
Journal of Aircraft, 1981Using a twin-engine turboprop aircraft, flight measurements were made to supplement the very limited data on the effects of propellers on the individual lateral static and dynamic stability derivatives. It is found that the propeller slipstream significantly affects the wing contribution to the derivative lv.
R. S. van Rooyen, M. E. Eshelby
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Direct Transient Stability Assessment with Two-Axis Generator Models
IFAC Proceedings Volumes, 1990Abstract The recently developed Extended Equal Area Criterion (EEAC) method has proved to be an accurate and extremely fast transient stability assessment method for the classical model. This model may be too rough for some practical engineering uses.
Yusheng Xue, Yiwei Zhang
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Fast methods for direct assessment of power system transient stability
IEE Proceedings C Generation, Transmission and Distribution, 1988The paper presents a new and simple method for transient stability assessment of multimachine power systems. The criterion for assessment is given in terms of the rate of change of kinetic energy of individual machines subsequent to fault clearance. The basic concepts and the mathematical formulation of the method are summarised.
F.J. Al Azzawi +2 more
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