Results 151 to 160 of about 201,343 (198)
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Transient voltage stability signature in time domain simulations
Proceedings of 8th Mediterranean Electrotechnical Conference on Industrial Applications in Power Systems, Computer Science and Telecommunications (MELECON 96), 2002Real-time dynamic security assessment is an important function to be implemented in energy management systems. In order to apply the most proper corrective actions it is necessary, in real time simulations, to distinguish a transient instability from voltage instability.
G. De Angelis +3 more
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Novel transient stability assessment using post-disturbance voltage fluctuations
2020 International Conference on Smart Grids and Energy Systems (SGES), 2020Transient stability assessment generally relies on angle-based approaches, which predict out-of-step often too late to maintain power system stability, and need commonly generator's rotor angles measured with a specially deployed optical or magnetic sensor.
Koichiro Shimizu, Atsushi Ishigame
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Transient voltage stability enhancement using Static Synchronous Compensator
2014 International Conference on Advances in Electrical Engineering (ICAEE), 2014This Paper analyzes the application of Static Synchronous Compensator (STATCOM) to prevent the transient voltage instability of power systems due to the presence of large induction motor loads at the terminals of long transmission lines. The analysis is supported by transient time simulations for the complete power system following large disturbances ...
Vikram Chekuri, null Kumudini Devi R.P.
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Dispatch optimization incorporating transient and voltage stability constraints
2000 Power Engineering Society Summer Meeting (Cat. No.00CH37134), 2002Stability aspects have often been incorporated in the dispatch/pricing procedure using trial and error methods, or approximated in the dispatch optimization directly as a set of linear constraints on generation/transmission. This paper presents the preliminary experiences with the development of an OPF model that incorporates both transient and voltage
D. Chattopadhyay, null Deqiang Gan
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Electric Power Components and Systems, 2006
This article presents a method to discriminate between transient voltage stability and voltage sag. Transient modeling based on matching pursuit with an overcomplete dictionary of wavelet functions is a powerful tool in the analysis of the transient phenomena in power systems because of its ability to accurately represent them in both time and ...
P. Vera-Candeas +2 more
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This article presents a method to discriminate between transient voltage stability and voltage sag. Transient modeling based on matching pursuit with an overcomplete dictionary of wavelet functions is a powerful tool in the analysis of the transient phenomena in power systems because of its ability to accurately represent them in both time and ...
P. Vera-Candeas +2 more
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Optimal Quasi-Synchronous Compensator Dispatch for Transient Voltage Stability
2018 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC), 2018The quasi-synchronous compensator is a type of synchronous generator, which can work in a low loading factor and provide reactive power support to power system. For the enhancement of transient voltage stability, this paper proposes an optimal dispatch method by regulating those quasi-synchronous compensators.
Zhenchuan Ma +4 more
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Transient stability enhancement and voltage regulation of power systems
IEEE Transactions on Power Systems, 1993Improvement of the transient stability and voltage regulation of a single-machine-infinite-bus power system under the effects of a symmetrical three-phase short-circuit fault is detailed. The dynamical model of the system is described. A design strategy for nonlinear controllers is considered, and the design of a nonlinear variable-structure excitation
Wang, Youyi +3 more
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Multi-objective congestion management incorporating voltage and transient stabilities
Energy, 2009Congestion in a power system is turned up due to operating limits. To relieve congestion in a deregulated power market, the system operator pays to market participants considering their bids to alter their active powers. After relieving congestion, the network may be operated with a reduced voltage or transient stability margin because of hitting ...
Masoud Esmaili +2 more
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Analysis of Transient Voltage Stability via Quadratic Approximation Method
2006 International Conference on Power System Technology, 2006Based on the quadratic approximation of the stability region boundary, this paper proposes a transient voltage stability margin index, and analyzes the transient voltage stability of a one-generator-one-load system including an induction motor with electro-mechanical transient model.
Yihong Wang +3 more
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Transient Stability Improvement Using Thyristor Controlled Quadrature Voltage Injection
IEEE Transactions on Power Apparatus and Systems, 1981A thyristor controlled quadrature voltage injection transformer is used to improve the transient stability performance of a generator connected, through a transmission circuit, to a power-system. The paper discusses the effect of alternative control strategies and shows that not only can first swing maximum angle be reduced, but the subsequent ...
C. P. Arnold, R. M. Duke, J. Arrillaga
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