Results 251 to 260 of about 120,363 (295)

Pressure-Aware Operando X‑ray Methods Reveal True Mechanistic Pathways in Solid-State Batteries. [PDF]

open access: yesACS Energy Lett
Nguyen HQ   +10 more
europepmc   +1 more source

Cascaded voltage collapse

IEEE Transactions on Power Systems, 1990
The dynamic phenomena of power system voltage collapse are analyzed by the method of dynamic simulation using induction motor models. From the viewpoint of dynamic phenomena, the voltage collapse starts locally at the weakest node and spreads out to the other weak nodes. The main conclusions drawn from this study are as follows.
Y. Sekine, H. Ohtsuki
exaly   +2 more sources

Dynamic mechanisms of voltage collapse

Systems and Control Letters, 1990
Abstract This paper presents the result of a thorough voltage stability analysis of a simple power system. Three mechanisms of dynamic voltage collapse are incorporated: generator excitation limit, load dynamics and on-load tap-changer. The effect of each individual mechanism is analyzed first and then the combined effects are used to reconstruct a ...
Vu, Khoi T., Liu, Chen-Ching
exaly   +3 more sources

Voltage collapse risk assessment

Electric Power Systems Research, 2000
Abstract Several approaches have been proposed in the literature to analyze system voltage collapse, based on indices that can efficiently evaluate the load margin for which the system remains stable. All this discussion, including possible methods of solution, is being carried out under deterministic assumptions; load, generation and transmission ...
Ricardo B Prada
exaly   +2 more sources

Discussion on some voltage collapse indices

Electric Power Systems Research, 2000
Abstract This paper discusses some voltage collapse indices with the help of bifurcation theory. Two main topics are presented: first, the identification of a well-behaved eigenvalue as a function of load increase; second a theoretical interpretation of the results. For this purpose, the center manifold theorem is employed.
exaly   +2 more sources

Time to voltage collapse dependence of load shedding to avoid voltage collapse

2017 IEEE Electrical Power and Energy Conference (EPEC), 2017
Power transmission systems of today are operating closer to their limits due to economic and environmental constrains. As a consequence, many systems around the world experience voltage collapse leading to partial or complete blackouts. Load shedding is a cost effective solution for preventing system collapse.
Tara Alzahawi   +2 more
openaire   +1 more source

THE CAPABILITY OF ALTERNATORS IN VOLTAGE COLLAPSE ANALYSIS

Electric Machines & Power Systems, 1997
ABSTRACT The paper presents and discusses the static models of the synchronous machines used in voltage collapse analysis, taking into account the capability limits.The paper considers the thermal limits of rotor and stator currents (dependent on voltage and real power), the underexcitation limiters action that prevents from the stator-end heating ...
BERIZZI, ALBERTO   +3 more
openaire   +2 more sources

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