Results 251 to 260 of about 97,586 (297)

Power Quality (PQ)-Standards und PQ-Monitoring

e & i Elektrotechnik und Informationstechnik, 2002
Durch die neuen wirtschaftlichen Rahmenbedingungen im Zuge der Deregulierung werden Netzausbau und Netzbetrieb in Zukunft anders geplant; Kennwerte der Netzqualitat spielen dabei eine wichtige Rolle. Nach einer systematischen Ubersicht uber die verschiedenen Qualitatsmerkmale der elektrischen Energieversorgung wird die Power Quality als zentraler ...
L. Fickert, H. Renner
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Virtual PQ troubleshooter [power quality]

IEEE Power and Energy Magazine, 2003
The authors describe a prototype instrument that locates the sources of power quality disturbances and is geared toward power system troubleshooting and management.
null Chun Li, null Wilsun Xu, B. Hughes, J. Gurney, B. Neilson   +4 more
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Smart grid and power quality (PQ) issues

2016 Online International Conference on Green Engineering and Technologies (IC-GET), 2016
If power quality is poor, then it becomes the major issue due to mal-operation of the equipments, increase in loss and heat, over burdening of the power system. This is due to the widespread use of sensitive microprocessor-based controls and power electronics devices for higher efficiency, pf improvements, and adjustable speed drives etc.
S. P. Jolhe, M. D. Karalkar, G. A. Dhomane   +2 more
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Analysis of Power Quality (PQ) Signals by Continuous Wavelet Transform

2007 IEEE Power Electronics Specialists Conference, 2007
This paper presents application of continuous wavelet transform to identify power system transients and disturbances. A mother wavelet basis function (Littlewood-Paley (L-P)) with dyadic nonoverlapping frequency bands has been used. A few power signals with power quality (PQ) disturbances have been analyzed to show the effectiveness of the proposed ...
Basu, Malabika, Basu, Biswajit
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Power quality (PQ) analysis in a power feeder that supply different social class consumers

International Journal of Emerging Electric Power Systems, 2020
Abstract The aim of the present work is to evaluate the power quality (PQ) required in individual customers in low voltage (LV), along an electrical circuit of 13.8 kV, in a distribution network standardized in urban area and with diversity of energy consumption profiles.
Bruno Almeida Silva, Daniela Coelho Rodrigues Souza, Riller Marinho Ramos, Marcio Zamboti Fortes, Henrique de Oliveira Henriques   +4 more
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Improvement of power quality using PQ-theory shunt-active power filter

2016 International Conference on Signal Processing, Communication, Power and Embedded System (SCOPES), 2016
This paper deals with the staging the evaluation of a three-phase Shunt APFS for Power Quality improvement. Power Quality complications can be take up using SAPFS. A simulation model of the three-phase shunt active filter had been implemented based on the mathematical modelling of the system where we can observe the considerable improvement in the ...
Balaga UdayaSri, P. A. Mohan Rao, Dasumanta Kumar Mohanta, M. Pradeep Chandra Varma   +3 more
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Power quality reporting in systems with a diverse mix of PQ monitors

2014 16th International Conference on Harmonics and Quality of Power (ICHQP), 2014
One of the main purposes of the power quality monitoring systems (PQMS) in Europe is providing system-wide compliance and benchmarking reporting capabilities. A common structure of the PQMS includes power quality monitors and other intelligent electronic devices (IED) from different manufacturers.
Ivan Bilic, Ivo Novakovic, Daniel D. Sabin   +2 more
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A scalable PQ event identification system [for power quality events]

2000 Power Engineering Society Summer Meeting (Cat. No.00CH37134), 2002
Summary form only given, as follows. A scalable event identification system for power quality events is proposed. Unlike ANN-based approaches where the system is not scalable and not "debug-able" without retraining; the proposed approach is particularly advantageous compared to those of ANNs since it is scalable, debug-able and easily modified.
S. Santoso, J. Lamoree, W.M. Grady, E.J. Powers, S.C. Bhatt   +4 more
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New PQ theory for power quality improvement using modular multilevel converter based UPFC system

Journal of Intelligent & Fuzzy Systems, 2020
The source current harmonics reduction techniques were found to be unpredictable and disparity under different loading conditions. The presence of uncertainity issue in harmonics elimination is due to nonlinear loads. Filters can be used to eliminate the harmonics and power quality issues.
T. M. Thamizh Thentral, R. Jegatheesan, C. Subramani 0001   +2 more
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A power quality disturbance classification method based on PQ transform and αβ transform analysis

2008 3rd IEEE Conference on Industrial Electronics and Applications, 2008
This paper first analyzes the PQ Transform and alphabeta Transform of some normal power quality disturbances and then proposes four characteristic indexes which can be used to classify 5 single disturbances and 6 mixed disturbances exactly. The algorithm is simple and easy to be implemented by hardware.
null Liu Hao, null Tang Yi, null Feng Yu, null Ma Xinghe   +3 more
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