Results 211 to 220 of about 258,257 (262)

On the economic regulation of voltage quality

2008 43rd International Universities Power Engineering Conference, 2008
The voltage continuity and quality are two different aspects of the quality on the electrical supply. Their regulation is of great importance due to the economical consequences associated with the presence of the disturbances in the electrical power systems.
CARPINELLI G, CARAMIA P, VARILONE, Pietro, VERDE, Paola   +3 more
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Toward Voltage-Quality Regulation in Italy

IEEE Transactions on Power Delivery, 2010
The Italian regulatory authority is working toward the introduction of voltage-quality regulation. To this end, it initiated a power-quality measuring campaign and a study of customer costs. This paper summarizes the main results of these activities and provides evidence that economic losses due to very short interruptions and voltage dips can be very ...
DELFANTI, MAURIZIO, FUMAGALLI, ELENA MARIA, GARRONE, PAOLA MARIA, GRILLI, LUCA, L. Lo Schiavo   +4 more
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Voltage quality index

International Symposium on Power Electronics, Electrical Drives, Automation and Motion, 2006. SPEEDAM 2006., 2006
A voltage quality index (VQI) is proposed for evaluation of the voltage quality aspects (QAs) of three-phase voltage signals: instantaneous frequency-deviations, total harmonic distortion and instantaneous symmetrical components. A VQI in the range between 0 to 1 is defined and measured.
J.-C. Montano, J.-C. Bravo, D. Borras, M. Castilla, A. Lopez, J. Gutierrez   +5 more
openaire   +1 more source

Voltage quality analyzer

IEEE Compatibility in Power Electronics, 2005., 2005
The Voltage Quality Analyzer is a virtual instrument for diagnosing voltage quality of three-phase signals: instantaneous frequency deviations, harmonic spec- trum, total harmonic distortion and instantaneous symmetri- cal components. Accurate measurement of the instantaneous frequency and the harmonic content are obtained and the three-phase ...
J.-C. Montano, J.-C. Bravo, D. Borras, M. Castilla, A. Lopez, J. Gutierrez   +5 more
openaire   +1 more source

The influence of voltage and frequency variations on insulation quality of a high voltage cable

Eurocon 2013, 2013
Insulation quality issue has had a significant place in high voltage systems for long years. Especially for high voltage cables, which is one of the most crucial elements in power systems, the measurements of dissipation factor or tan delta has a great importance on the insulation life time.
Celal Kocatepe, Celal Fadil Kumru, Ramazan Ayaz, Oktay Arikan, Hakan Akca   +4 more
openaire   +4 more sources

Control of the Dynamic Voltage Restorer to improve voltage quality

2014 IEEE 5th International Symposium on Power Electronics for Distributed Generation Systems (PEDG), 2014
In this study a method is proposed in order to improve the voltage compensation performance of Dynamic Voltage Restorer by using Self Tuning Filter. The proposed control method gives an adequate voltage compensating even for 50% voltage sag and distorted voltage conditions.
Samet Biricik, Shafiuzzaman K. Khadem, Soydan Redif, Malabika Basu   +3 more
openaire   +1 more source

A Voltage Quality Detection Method

2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies, 2008
This paper presents a voltage quality detection method based on a phase-locked loop (PLL) technique. The technique can detect the voltage magnitude and phase angle of each individual phase under both normal and fault power system conditions. The proposed method has the potential to evaluate various power quality disturbances, such as interruptions ...
Chen, Zhe; id_orcid 0000-0002-2919-4481, Wei, Mu   +1 more
openaire   +3 more sources

Voltage Flickers as Voltage Quality Problem in Industrial Sector

2018
Very important parameter of product called electricity is voltage quality. In recent times electricity became a commodity that has its price and it is known that any commodity today must have an appropriate quality for its price. That applies for electrical energy as well.
Ivan Ramljak, Jurica Perko, Matej Znidarec   +2 more
openaire   +1 more source

Voltage regulation optimization in low voltage network based on Voltage Quality Index

Proceedings of the 2014 15th International Scientific Conference on Electric Power Engineering (EPE), 2014
The paper deals with an optimization procedure in terms of a network voltage parameters improvement. A software based approach is used to select optimal type of voltage regulator, its power and ideal location for application in a Low-Voltage (LV) test network, where it is required to enhance Voltage Quality (VQ).
Marek Kopicka, Jiri Drapela, David Topolanek   +2 more
openaire   +1 more source

Quality Analysis of SVPWM Inverter Output Voltage

2008 International Conference on Computer Science and Software Engineering, 2008
This paper simply introduces the working principle of SVPWM inverter. And then analysis the method of space vector calculation, deduces the detail equations that can be easily used. The paper also calculates and compares the output voltage waves of SVPWM inverter with different modulation rate k in every fan district, try to obtain the harmonic compose.
Guilian Guo, Wenxia You
openaire   +1 more source