... frequently than other powerquality phenomenon These sags/swells are the most 306 PowerQuality – Monitoring, AnalysisandEnhancement important powerquality problems in the power distribution ... three-phase power plow modelization: a tool for optimal location and control of FACTS devices in unbalanced power systems, The 32nd Annual 304 PowerQuality – Monitoring, AnalysisandEnhancement ... Ju and Edmund Handshin, Continuation three-phase power flow: A tools for voltage stability analysis of unbalanced three-phase power systems, IEEE Trans Power Systems, vol 20, no 3, pp 132 0 -132 9,...
... Power QualityMonitoringPowerqualitymonitoring The process of the powerqualityanalysis consists of four steps, namely, detection, classification, characterization, and location Powerquality ... Cantabria (UC), Santander, Spain Ramesh Bansal The University of Queensland, Australia Part PowerQuality Monitoring, Classification, Measurements, andAnalysisPowerQualityMonitoring Kazem Mazlumi ... the importance of monitoring instruments in order to localize the problems and find solutions Although the PowerQuality – Monitoring, AnalysisandEnhancementpowerqualitymonitoring relies...
... transient duration and energy features (Gaing, 2004) Zhu et 22 PowerQuality – Monitoring, AnalysisandEnhancement al proposed an extended wavelet-based fuzzy reasoning approach for powerquality disturbance ... by j, and both functions must be orthonormal 24 PowerQuality – Monitoring, AnalysisandEnhancement The wavelet and scaling functions are used to perform simultaneously a multiresolution analysis ... pu 16 PowerQuality – Monitoring, AnalysisandEnhancement SLG fault exposed area of bus 35 contains buses 30 and 32 Also, the 0.8 pu three phase fault exposed area contains buses 30, 32, and 38...
... reactive power formulations for nonsinusoidal situations; the most used ones are described next 40 PowerQuality – Monitoring, AnalysisandEnhancement 2.2 Reactive powerand distortion power definitions ... Aredes, M (2007) Instantaneous Power Theory and Applications to Power Conditioning, Wiley, ISBN 978-0-470-10761-4, Canada 58 PowerQuality – Monitoring, AnalysisandEnhancement Akagi, H., Kanazawa, ... 2006 IEEE, (2006), pp 60 PowerQuality – Monitoring, AnalysisandEnhancement Seong-Jeub, J (2008) Unification and Evaluation of the Instantaneous Reactive Power Theories Power Electronics, IEEE...
... Wiley & Sons, England 76 PowerQuality – Monitoring, AnalysisandEnhancement Bollen, M H J & Gu I (2006) Signal Processing of PowerQuality Disturbances, IEEE Press, ISBN -13 978-0-471-73168-9, ... PNN classifier for identification the various powerquality events 86 PowerQuality – Monitoring, AnalysisandEnhancement Nine types of powerquality disturbances are generated in MATLAB with ... protection relay andpowerquality analyser The architecture of combined protection relay andpowerquality analyser has been shown in Figure The architectures of powerquality analyzer and protection...
... S Y (30) 94 PowerQuality – Monitoring, AnalysisandEnhancement where r : correlation coefficient X, Y : the means of X and Y respectively S X , S Y : the standard deviation of X and Y respectively ... 5th and 7th Fig Harmonic distortions Fig Impulsive transient 103 Methodes of PowerQualityAnalysis In most cases the powerquality disturbances are nonstationary and nonperiodic For powerquality ... understanding the cause-effect relation and to improve the powerquality The classical method of powerqualityanalysis used in powerqualitymonitoring sytems has been the discrete Fourier transform...
... that affect the powerquality It is necessary to comment that the neural networks (with BP, LM and RPROP training algorithms), as well 134 PowerQuality – Monitoring, AnalysisandEnhancement as, ... ISSN: 1063-6706 136 PowerQuality – Monitoring, AnalysisandEnhancement Zhang, M.; Li, K & Hu, Y (2011) A Real-Time Classification Method of PowerQuality Disturbances Electric Power Systems Research; ... are obtained amplitude, frequency and time information in order to detect, localize and classify the disturbance 114 PowerQuality – Monitoring, AnalysisandEnhancement Fig 12 S-transform Figure...
... source of 5th and 11th harmonics and the customer is the dominant source of 7th and 13th harmonics The above assumption is valid for both the 160 PowerQuality – Monitoring, AnalysisandEnhancement ... Applications Conference 156 PowerQuality – Monitoring, AnalysisandEnhancement Tenti, P Mattavelli, P and Morales Paredes, H K (2010) Conservative Power Theory, Sequence Components and Accounting in ... 138 PowerQuality – Monitoring, AnalysisandEnhancement factors and voltage sags and swells, especially in case of three-phase four-wire...
... disturbance; the analysis of voltages; asymmetry factor value and symmetric component phase angle and algorithms for the operation of protection 174 PowerQuality – Monitoring, AnalysisandEnhancement ... cos(φ1 − α ) − I R (41) The real part of equation (40): 184 PowerQuality – Monitoring, AnalysisandEnhancement where θ and α are phase angles of, respectively, voltage and current in the measurement ... sources ES and EC In order to find the answer has been defined the voltage value at an arbitrary point m between sources ES and EC (Fig 2): 168 PowerQuality – Monitoring, Analysisand Enhancement...
... example of changes in the flicker severity and the active and reactive power ― phase L1 (diagram in (a)) 190 PowerQuality – Monitoring, AnalysisandEnhancement 4.1 Criterion of voltage fluctuations ... severity Pst and/ or changes in the active and reactive power The method consists in the analysis of mutual correlation between changes in the reactive power Q (and also the active power P, particularly ... Location of Distortion, Unbalance, Voltage Fluctuation and Dips Sources in a Power System 195 196 PowerQuality – Monitoring, AnalysisandEnhancement In order to examine the method of asymmetry...
... measurement methods 216 PowerQuality – Monitoring, AnalysisandEnhancement Jaramillo, S.H.; Heydt, G.T & O’Neill-Carrillo, E (2000) Powerquality indices for a periodic voltages and currents’, IEEE ... classification of powerquality disturbance signals by support vector machines, Proceedings of the CSEE, vol 25, no 4, pp 51-56 Part PowerQualityEnhancementand Reactive Power Compensation and Voltage ... branches of the two Δ+ and Δ- fictitious compensators can be determined, using real and imaginary parts of the sequence currents of load: 234 PowerQuality – Monitoring, AnalysisandEnhancement + ⋅...
... the SMES with an ideal VSI Fig The power network Fig THD and DF variation of the inverter output line voltage 268 PowerQuality – Monitoring, AnalysisandEnhancement Fig shows the voltage variation ... the CM mode has been selected by the 270 PowerQuality – Monitoring, AnalysisandEnhancement Embedded MATLAB function, and after this time, both the CM and the FCM modes have been selected as ... that the proper values of ma and ϕinv be calculated and applied to the inverter If the phasor voltage of the R-L load 274 PowerQuality – Monitoring, AnalysisandEnhancement (resulting only...
... of IEC and IEEE Standards and Application Criteria, Proceedings of IEEE Conference on Transmission and Distribution, 1999,Vol pp 585-589 324 PowerQuality – Monitoring, AnalysisandEnhancement ... Voltage Quality Improvement in Electrical Distribution System a) b) Fig 10 a) One Phase Voltage Swells, and b) Voltage Swells after Compensation 319 320 PowerQuality – Monitoring, AnalysisandEnhancement ... unbalanced Voltages Swells (50V/div), and c) an injection Voltages of unbalanced voltage swells (50V/div) 322 PowerQuality – Monitoring, AnalysisandEnhancement a) b) Fig 13 a) Total Harmonic Distortion...
... (11) 350 PowerQuality – Monitoring, AnalysisandEnhancement Vss= voltage at main station Yss=admittance b/w main station and bus j PDj=Real power load at bus j Improvement of power quality: ... Trans on Power Systems, Vol 7, No 3, August 1992, pp 1044 – 1051 ISSN 0885-8950 344 PowerQuality – Monitoring, AnalysisandEnhancement Padiyar, K R (1997) Power system dynamics: stability and control,: ... ISSN 0093–9994 Grainger, J J (1994) Power system analysis McGraw-Hill, ISBIN 0-07- 1133 38-0, Singapore Gupta, B.R (2004) Power System Analysisand Design S Chand & Company, Ltd., ISBN 81219-2238-0,...
... generator, propulsion induction motor, andpower inverter will be considered 364 PowerQuality – Monitoring, AnalysisandEnhancement References Ashish Ahuja, Sanjoy Das, and Anil Pahwa, Fellow, IEEE, ... reconfiguration, Electric Power Components and Systems Vol.33 (5) pp 539-550 Verbi’c Gregor, Pantoˇs Miloˇs, Gubina Ferdinand, 2006 On voltage collapse and apparentpower losses, Electric Power Systems Research, ... IEEE, and Abhisek Ukil, 2007, Reconfiguration and Load balancing in the LV and MV Distribution Networks for Optimal Performance IEEE transactions on power delivery, vol 22, no 4, pp 1128 1135 Nagata...
... Power QualityMonitoringPowerqualitymonitoring The process of the powerqualityanalysis consists of four steps, namely, detection, classification, characterization, and location Powerquality ... Cantabria (UC), Santander, Spain Ramesh Bansal The University of Queensland, Australia Part PowerQuality Monitoring, Classification, Measurements, andAnalysisPowerQualityMonitoring Kazem Mazlumi ... the importance of monitoring instruments in order to localize the problems and find solutions Although the PowerQuality – Monitoring, AnalysisandEnhancementpowerqualitymonitoring relies...
... 103-107, 3:2, 2008 234 PowerQuality Harmonics Analysisand Real Measurements Data [32] Rana Abdul Jabbar Khan, PowerQualityand On-line Harmonics Monitoring in Power Systems”, PhD thesis, RMIT ... A Esfandiari, M Parniani, and H Mokhtari, “A new control strategy of shunt active filters for powerquality improvement of highly and randomly varying loads,” in Proc ISIE2004, pp 1297 ~130 2, ... voltages and currents, distortion factor of voltages and currents, K factor for current, voltage and current unbalance, power factor and displacement factor, extreme and average values for voltage and...
... (a) waveform between wind farm electric circuit and ground and (b) FFT analysis of the ground current obtained 274 PowerQuality Harmonics Analysisand Real Measurements Data 800 Capacitive cooupling ... (a) (b) Fig 13 Simulation result of the distribution network: (a) phase voltage waveform and (b) FFT analysis of the waveform obtained, at node 276 PowerQuality Harmonics Analysisand Real Measurements ... 270 PowerQuality Harmonics Analysisand Real Measurements Data Crectifier and Cac_cable are the capacitive couplings of the rectifier side and underground cable, respectively,...
... Aleksandar Vuchev and Georgi Terziyski Chapter Thermal Analysis of Power Semiconductor Converters 131 Adrian Plesca Part Harmonic Distortion 151 Chapter Improve PowerQuality with High Power ... consumers 4 PowerQuality Harmonics Analysisand Real Measurements Data Sources and problems of harmonics [2] Harmonic sources are divided into two categories: Established and known New and Future ... Ensuring optimal powerquality after a good design and devices means productivity, efficiency, competitiveness and profitability Nevertheless, nobody can assure the optimal powerquality when there...