Results 51 to 60 of about 1,034,905 (229)

Assessing the Static Security of the Italian Grid by Means of the N-1 Three-Phase Contingency Analysis

Energies
The ongoing replacement of synchronous machine generators (SMs) with converter-interface generators (CIGs) is raising the voltage unbalance of power systems, affecting power quality and grid stability.
Giovanni Gardan, Luca Rusalen, Roberto Benato   +2 more
doaj   +1 more source

Design of Three Phase Load Unbalance Automatic Regulating System for Low Voltage Power Distribution Grids

MATEC Web of Conferences, 2018
In the three-phase four wire system of the low voltage side for the distribution grid, the phenomenon of asymmetrical and uneven single phase load were very common, causing unbalance in certain network.
Li Yongxia, Gong Yulei
doaj   +1 more source

Overview of increasing the penetration of renewable energy sources in the distribution grid by developing control strategies and using ancillary services [PDF]

, 2014
Increasing the renewables energy resources in the distribution network is one of the main challenges of the distributed system operator due to instability, power quality and feeder capacity problems. This paper proposes a solution for further penetration
Bozalakov, Dimitar, Meersman, Bart, Vandevelde, Lieven, Vandoorn, Tine   +3 more
core  

Investigation of Line-Commutated Three-Phase Converters Under Voltage Unbalance

RE&PQJ
Power  converters  operated  in  unsymmetrical  three-phase  elec-trical  systems  will  generally  work  asymmetrically.  This  intro-duces  disadvantages  for  the  operation  of  the  electrical  power  system,  like  non-characteristic  harmonics.
null Manuel Weiland, null Gerhard Herold
openaire   +1 more source

Power quality improvement by grid-connected inverters driven by the three-phase damping control strategy operated in different modes

International Journal of Electrical Power & Energy Systems
The increased demand for renewable energy and electrification of transportation such as electric vehicles can lead to power quality problems in the low voltage distribution grids.
Dimitar V. Bozalakov, Sajid Qazi, Jeroen D.M. De Kooning, Lieven Vandevelde   +3 more
doaj   +1 more source

Considerations on Current and Voltage Unbalance of Nonlinear Loads in Residential and Educational Sectors

Energies, 2020
Most often, electrical consumers in the residential and educational sectors are different from industrial electrical consumers. Whereas the vast majority of industrial electrical consumers are low-voltage, three-phase (with three or four wires ...
Gabriel Nicolae Popa, Angela Iagăr, Corina Maria Diniș   +2 more
doaj   +1 more source

A COMPUTER CALCULATION FOR TENTATIVE ELECTRICAL SYSTEM IMPROVEMENT BY REACTIVE POWER COMPENSATION CONSIDERING SYSTEM UNBALANCED [PDF]

, 2013
An improvement of unbalanced distribution system operation is carried out by reactive power compensation. The lagging reactive power demand is compensated by allocating a number of three-phase shunt capacitors.
Agus , Supardi, Agus, Ulinuha, Hasyim , Asy’ari   +2 more
core  

Effective velocity distribution in an atom gravimeter: effect of the convolution with the response of the detection

, 2014
We present here a detailed study of the influence of the transverse motion of the atoms in a free-fall gravimeter. By implementing Raman selection in the horizontal directions at the beginning of the atoms free fall, we characterize the effective ...
Cheng, Bing, Farah, Tristan, Gillot, Pierre, Landragin, Arnaud, Merlet, Sébastien, Santos, Franck Pereira Dos   +5 more
core   +3 more sources

Statistical properties of voltage unbalance factor in three-phase power systems [PDF]

, 2016
Bellan, Diego
core   +2 more sources

Tradeoffs between AC power quality and DC bus ripple for 3-phase 3-wire inverter-connected devices within microgrids [PDF]

, 2011
Visions of future power systems contain high penetrations of inverters which are used to convert power from dc (direct current) to ac (alternating current) or vice versa.
Burt, Graeme M., Finney, Stephen J., Roscoe, Andrew J.   +2 more
core   +1 more source