7 power quality

... converter 120 Power Quality Harmonics Analysis and Real Measurements Data Stages and correspond to the commutations in the inverter 0 0 The commutations in the rectifier begin in p M1 or p M5 and end ... limited within the boundary curves А and L3 or L4 The bigger the capacity of the capacitors 124 Power Quality Harmonics Analysis and Real Measurements Dat...

Ngày tải lên: 19/06/2014, 08:20

... Amplitude Angle va 1 97. 57 V 0o 1 97. 57 V 0o o vb 171 .34 V -125.21 171 .34 V -114 .79 o vc 171 .34 V 125.21o 171 .34 V 114 .79 o Table Voltages and phase angles programmed at the power source In this ... 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 Power Quality – Monitorin...

Ngày tải lên: 19/06/2014, 11:20

... 25 21 18 17 Ω-cm (Ω) TABLE 5 .7 Effect of Ground Rod Diameter on Earth Resistancea Rod Diameter (inches) % Resistance 0.5 0 .75 1.0 1.5 2.0 Note: Soil resistivity = 10,000 a 100 90 85 78 76 Ω-cm ... Zinc Iron Cadmium Nickel Tin Lead Copper Silver Palladium Gold 2. 37 1.66 0 .76 3 0.44 0.403 0.25 0.136 0.126 –0.3 37 –0 .79 9 –0.9 87 –1.5 5.14 EXAMPLES OF GROUNDING ANOMALIES OR PROBLEMS...

Ngày tải lên: 07/08/2014, 21:21

... Transmission and Distribution Networks, In: Proceedings of the 3rd International 112 Electrical Generation and Distribution Systems and Power Quality Disturbances Conference on Power Systems MPS ... Interface distribution of the operation times and repair times Fig 20 Interface for the reliability and nonreliability functions 109 110 Electrical Generation...

Ngày tải lên: 12/08/2014, 05:20

... gian tr ng thái c a mô hình ct7_1 b ng hàm power2 sys Nh p dòng l nh sau ây vào c a s MATLAB : [A,B,C,D,x0,states,inputs,outputs] = power2 sys(’ct7_1’); Hàm power2 sys tr v mô hình không gian tr ng ... semilogy(w,mag1(:,2)); semilogy(w,mag1(:,2)); 145 §3 MÔ HÌNH HOÁ QUÁ TRÌNH QUÁ M t nh ng ph m vi ng d ng c a Power System Blockset simulation trình m ch i n i u có th làm cc v i c u da...

Ngày tải lên: 28/10/2013, 06:15

... Mohan,T Undeland and W P Robbins Power Electronics Converters, Applications and Design” Wiley India, 2006 20 An Update on Power Quality [27] N Pecharanin, M Sone, and H Mitsui An application ... Addoweesh and Yasin Khan Chapter Power Quality and Grid Code Issues in Wind Energy Conversion System 21 Sharad W Mohod and Mohan V Aware Section Power Quality Improvement in Trans...

Ngày tải lên: 17/03/2014, 02:20

... Mohan,T Undeland and W P Robbins Power Electronics Converters, Applications and Design” Wiley India, 2006 20 An Update on Power Quality [27] N Pecharanin, M Sone, and H Mitsui An application ... current transmission systems incorporating power electronic-based and other static controllers to enhance controllability and increase power transfer capability 40 An Update on...

Ngày tải lên: 23/03/2014, 15:20

... between wind farm electric circuit and ground and (b) FFT analysis of the ground current obtained 274 Power Quality Harmonics Analysis and Real Measurements Data 800 Capacitive cooupling model ... phase voltage waveform and (b) FFT analysis of the waveform obtained, at node 276 Power Quality Harmonics Analysis and Real Measurements Data Although vol...

Ngày tải lên: 18/06/2014, 22:20

... Filter 11 1 Nikolay Bankov, Aleksandar Vuchev and Georgi Terziyski Chapter Thermal Analysis of Power Semiconductor Converters 13 1 Adrian Plesca Part Harmonic Distortion 15 1 Chapter Improve Power Quality ... obtained at t1, t2 = t1 + t, t3 = t1 + 2t, …, tm = t1 + (m – 1) t Then, after expanding equation (4), it can be written as  a  t  a12  t1   a12 N   t1    v...

Ngày tải lên: 19/06/2014, 08:20

... 1 ,2 Equation (22 ) turns out to be e  t   A1 cos w1t   t cos w1t  A1    cos w2t  A2 cos 2    t cos w2t  A2 cos 2    sin w2t  A2 sin 2    t sin w2t  A2 sin 2  (23 ) ... phase A, B, and C 28 Power Quality Harmonics Analysis and Real Measurements Data Fig 21 Estimated magnitudes of the fundamental, fifth, and seventh harmonics for phas...

Ngày tải lên: 19/06/2014, 08:20

... fundamental voltage Fig 32 Estimated voltage harmonics for V 35 36 Power Quality Harmonics Analysis and Real Measurements Data Fig 33 Estimated fundamental current IA Fig 34 Harmonics magnitude of ... steps at various window sizes Fig 36 Fundamental powers against time steps 38 Power Quality Harmonics Analysis and Real Measurements Data Fig 37 Fourt...

Ngày tải lên: 19/06/2014, 08:20

... the amplitude and phase angles of each harmonic component are time independent, steady state harmonics identification  54 Power Quality Harmonics Analysis and Real Measurements Data Fuzzy harmonic ... 0.0 14) V2= (1.00, 0 .40 6) 2= (0.266, 0.005) Figures (57-59) show the crisp and fuzzy variations of v(t) Fig 57 Efect of removing 2nd Harmonic 64 Power Quality H...

Ngày tải lên: 19/06/2014, 08:20

... 31 34 37 40 43 46 49 52 55 58 61 64 67 -1 -1 .5 -2 -2 .5 Time Step Fig 12 Active power at the loads for fIH = 228Hz 82 Power Quality Harmonics Analysis and Real Measurements Data 264 Hz 0.3 0.2 ... Task Force (1997) Cigre 36. 05/ CIRED CC02 Voltage Quality Working Group, Interharmonics in Power Systems 88 Power Quality Harmonics Analysis and Real Measu...

Ngày tải lên: 19/06/2014, 08:20

... (1) and high corner frequency fhigh by formula (2) f low  f HPF  RHPF 2 LHPF (1) f high  f LPF  RLPF 2 LLPF (2) 92 Power Quality Harmonics Analysis and Real Measurements Data Wideband analysis ... accepted in power quality measurement applications 1 06 kHz 2.5 2.0 1.0 10 Hz 1.5 kHz Modulus of normalized voltage transfer ratio [-] Power Quality Harmonics...

Ngày tải lên: 19/06/2014, 08:20

... device itself and their application is of major interest Having the opportunity to simulate the thermal processes at the power 1 48 Power Quality Harmonics Analysis and Real Measurements Data Fig 24 ... T   i 1  Ti  1e  (10) 136 Power Quality Harmonics Analysis and Real Measurements Data 2.4 Triangle pulse series input power A series of triangle i...

Ngày tải lên: 19/06/2014, 08:20