Electrical Power Systems Quality, Second Edition phần 5 pps
Electrical Power Systems Quality, Second Edition phần 5 pps
... 0. 75 0.3 0. 15 2 .5 20 50 3 .5 1. 75 1. 25 0 .5 0. 25 4.0 50 –100 5. 0 2. 25 2.0 0. 75 0. 35 6.0 100–1000 6.0 2. 75 2 .5 1.0 0 .5 7 .5 Ͼ1000 7 .5 3 .5 3.0 1. 25 0.7 10.0 V n Ͼ 161 kV 50 2.0 1.0 0. 75 0.3 0. 15 2 .5 50 ... Ͻ 23 23 Յ h Ͻ 35 35 Յ h TDD Ͻ20 4.0 2.0 1 .5 0.6 0.3 5. 0 20 50 7.0 3 .5 2 .5 1.0 0 .5 8.0 50 –100 10.0 4 .5 4.0 1 .5 0.7 12.0 100–1000 12...
Ngày tải lên: 08/08/2014, 15:21
Electrical Power Systems Quality, Second Edition phần 2 ppsx
... protection (< ;5 kVA) CVTs $1000/kVA 10 UPS $50 0/kVA 25 Dynamic sag corrector $ 250 /kVA 5 Machine protection (10–300 kVA) UPS $50 0/kVA 15 Flywheel $50 0/kVA 7 Dynamic sag corrector $200/kVA 5 Facility ... protection (2–10 MVA) UPS $50 0/kVA 15 Flywheel $50 0/kVA 5 DVR (50 % voltage boost) $300/kVA 5 Static switch (10 MVA) $600,000 5 Fast transfer switch (10 MVA) $ 150 ,000...
Ngày tải lên: 08/08/2014, 15:21
Electrical Power Systems Quality, Second Edition phần 8 pps
... the distribution sys- tem power quality. While the energy conversion technology may play some role in the power quality, most power quality issues relate to the type of electrical system interface. Some ... machine. 9.3.3 Electronic power inverters All DG technologies that generate either dc or non power frequency ac must use an electronic power inverter to interface with the...
Ngày tải lên: 08/08/2014, 15:21
Electrical Power Systems Quality, Second Edition phần 1 pot
... supplied from distribution systems) . Voltage Sags and Interruptions 47 Phase B Voltage RMS Variation 0 0123 456 0 25 50 75 100 1 25 150 1 75 200 –100 – 75 50 – 25 0 25 50 75 100 20 40 60 80 100 120 Voltage ... website. Electrical Power Systems Quality, Second Edition CHAPTER 1: INTRODUCTION What is Power Quality? Power Quality Voltage Quality Why Are We...
Ngày tải lên: 08/08/2014, 15:21
Electrical Power Systems Quality, Second Edition phần 3 pptx
... (pu) 900 4 1. 95 1 .55 900 9 1.97 1. 45 900 14 1.98 1.39 1200 4 1.94 1 .50 1200 9 1.97 1.40 1200 14 1.98 1.34 1800 4 1.92 1.42 1800 9 1.96 1.33 1800 14 1.97 1.28 SOURCE: Courtesy of Cooper Power Systems. Transient ... corre- sponding to the waveform in Fig. 4.2. Phase A Voltage Wave Fault 0 10 20304 050 6070 – 150 –100 50 0 50 100 150 Time (ms) % Volts Figure 4.2 Typical utilit...
Ngày tải lên: 08/08/2014, 15:21
Electrical Power Systems Quality, Second Edition phần 4 docx
... Switching 33.3 50 .0 66.7 83.3 100.0 116.7 –300 –200 –100 0 100 200 300 Time (ms) Current (A) dc Link Voltage during Capacitor Switching 33.3 50 .0 66.7 83.3 100.0 116.7 50 0 55 0 600 650 700 750 Time ... (such as PWM-type drives) can have much higher distortion levels as shown in Fig. 5. 15. 190 Chapter Five 0 5 10 15 20 25 30 35 –200 –100 0 100 200 Time (ms) (a) Current...
Ngày tải lên: 08/08/2014, 15:21
Electrical Power Systems Quality, Second Edition phần 6 pot
... order voltage h (%) h (%) h (%) 56 35 22 75 91 .54 1 11 3 .5 15 0.3 6 0 .5 13 3 21 0.2 8 0 .5 17 2 Ͼ21 0.2 10 0.2 19 1 .5 12 0.2 23 1 .5 Ͼ12 0.2 25 1 .5 Ͼ 25 0.2 ϩ 1.3 ϫ 25/ h *The THD of the supply voltage ... h voltage (%) Order h voltage (%) Order h voltage (%) 56 3 5 2 2 75 9 1 .5 4 1 11 3 .5 15 0.3 6–24 0 .5 13 3 21 0.2 17 2 19 1 .5 23 1 .5 25 1 .5 Applied Harm...
Ngày tải lên: 08/08/2014, 15:21
Electrical Power Systems Quality, Second Edition phần 7 pdf
... 1 .52 5 25. 4 65 18.7 65 13.619 Mean 56 .308 28.729 18.422 8.926 3.694 33.293 25. 390 18 .53 5 CP 95 1 35. 1 85 66.260 51 .000 27.037 13 .51 9 71.413 51 .50 0 38.238 Maximum 207.644 103.4 05 70 .53 5 56 .311 35. 689 ... Eight 0% 1% 2% 3% 4% 5/ 1/ 95 5/3/ 95 5 /5/ 95 5/7/ 95 5/9/ 95 V THD Figure 8.4 Trend of voltage total harmonic distortion demonstrat- ing daily cycle for 1 week...
Ngày tải lên: 08/08/2014, 15:21
Electrical Power Systems Quality, Second Edition phần 9 potx
... Power Apparatus and Systems, Vol. PAS-94, No. 5, September/October 19 75, pp. 1843–1 853 . 10. IEEE Standard P 154 7, Distributed Resources Interconnected with Electric Power Systems, Draft 8, P 154 7 ... Generation and Power Quality 431 Figure 9.37 Protection scheme for a large synchronous generator with high- side recloser. 81 O/U 27 /59 47 59 I 59 N 25 46 50 /51 V DG 87G 32R...
Ngày tải lên: 08/08/2014, 15:21
Electrical Power Systems Quality, Second Edition phần 10 pptx
... 7600.3726 6800 6900 7000 7100 7200 7300 7400 750 0 7600 7700 4/26/ 95 5/1/ 95 5/6/ 95 5/11/ 95 5/16/ 95 5/21/ 95 5/26/ 95 5/31/ 95 6 /5/ 95 V RMS A Figure 11.26 Time trend of an rms voltage is a standard feature in many power quality analysis ... programs. 0 20 40 60 80 100 120 Count 6870 6910 6 950 6990 7030 7070 7110 7 150 7190 7230 7270 7310 7 350 7390 7470 751 0 755 0 75...
Ngày tải lên: 08/08/2014, 15:21