Results 271 to 280 of about 636,624 (317)
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Voltage Regulation and Load Control
Transactions of the American Institute of Electrical Engineers, 1934Some of the problems involved in supplying electric power to the business sections of large metropolitan areas are dealt with in this article which describes the development and operation of new methods of voltage regulation and load control by means of which improved conditions are being obtained on the distribution system in New York City.
H. C. Forbes, H. R. Searing
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A low-voltage, highly linear voltage-controlled transconductor
IEEE Transactions on Circuits and Systems II: Express Briefs, 2005A low-voltage fully differential, voltage-controlled transconductor is described. The proposed transconductor achieves a wide input/control voltage range, with a highly linear transconductance factor and truly fully differential output currents. The transconductor is used to implement a G/sub m/-C adaptive forward equalizer (FE) for a 125 Mbps wire ...
Ayman A. Fayed, Mohammed Ismail 0001
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Study on system voltage oscillation and voltage stability control
2012 10th International Power & Energy Conference (IPEC), 2012This paper analyzes system voltage oscillation and proposes a new systematic method for voltage stability control in the power system. Recently, renewable energy and distributed power generation have been introduced into power systems because of worldwide societal interest in environmental problems.
Yuya Suzuki +2 more
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Secondary voltage control of power grid using voltage stability index and voltage control areas
2017 North American Power Symposium (NAPS), 2017This paper presents secondary voltage control of power grid using identification of voltage stability index and voltage control areas. Unlike, the traditional secondary voltage control in North America performed directly by switching capacitor banks and other reactive power sources, in the proposed approach generators are chosen first to perform ...
Rabindra Maharjan, Sukumar Kamalasadan
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Assessment of Voltage Control Techniques for Low Voltage Networks
12th IET International Conference on Developments in Power System Protection (DPSP 2014), 2014The increasing connection of photovoltaic generators (PVs) and new forms of loads into the low voltage (LV) distribution networks may lead to unpredictable voltage problems. This paper investigates a number of existing voltage control techniques for the LV networks in the UK and assesses their ability to maintain the voltage regulation.
Qi, S. +5 more
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Voltage controlled dynamic demand response
IEEE PES ISGT Europe 2013, 2013Future power system is expected to be characterized by increased penetration of intermittent sources. Random and rapid fluctuations in demands together with intermittency in generation impose new challenges for power balancing in the existing system. Conventional techniques of balancing by large central or dispersed generations might not be sufficient ...
Bhattarai, Bishnu Prasad +3 more
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Loss of voltage controllability as a cause of voltage collapse
Proceedings of the 27th IEEE Conference on Decision and Control, 2003Voltage stability and controllability definitions are proposed that can be applied at any time instant along the transient stability model trajectory or at the equilibrium point. Voltage controllability is defined at PQ buses. Conditions on sensitivity matrices that guarantee voltage controllability are then developed.
R.A. Schlueter, M.W. Chang, A. Costi
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Voltage-Controlled and Current-Controlled Low Voltage STATCOM: A Comparison
RE&PQJInverter-based converters interconnecting DC microgrids and AC-microgrids/grids are in a strong expansion. Besides power exchange, the inverter can be requested to furnish ancillary services and, among them, power factor compensation. This work presents a comparison between voltage control and current control in a low voltage inverter in a STATCOM ...
null L. Ribeiro, null D. Simonetti
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Variable-Unbalanced-Voltage Control
Transactions of the American Institute of Electrical Engineers, 1945SPEED CONTROL of wound-rotor induction motors where the torque is in the same direction as the mechanical rotation may be accomplished with moderate success merely by the use of adjustable resistance in the secondary or rotor circuit, provided the torque being developed by the motor is appreciable. Where the torque must be contrary to the rotation, for
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Voltage Control of Vapor Rectifiers
Transactions of the American Institute of Electrical Engineers, 1934Some of the changes to be introduced into the mathematical treatment of rectifier circuits when the fring of the anodes of a rectifier is advanced or retarded by control of the arc are described. The points considered and illustrated by theoretical curves include commutation between anodes, regulation, and wave shape of the output voltage for the more ...
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