ÇUKUROVA UNIVERSITY INSTITUTE OF NATURAL AND APPLIED ...

ÇUKUROVA UNIVERSITY INSTITUTE OF NATURAL AND APPLIED ... ÇUKUROVA UNIVERSITY INSTITUTE OF NATURAL AND APPLIED ...

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5. SIMULATION RESULTS AND CASE STUDIES Mustafa İNCİ RMS characteristics of Phase A, Phase B and Phase C voltages are seen in Figure 5.7 when single phase voltage sag occurs on Phase C. Figure 5.7. RMS Characterisics for Case 1 5.2.1.2. Case 2: Two Phase Voltage Sag A and B phase source voltage decreases to 70% from its nominal value during the period of 0.3-0.4 s. In A and B phases, phase jump occurs between source-side and load-side voltages. DVR operation for double line to ground fault is 91

5. SIMULATION RESULTS AND CASE STUDIES Mustafa İNCİ seen in Figure 5.18. Figure 5.8 (a) and 5.8 (b) show the simulation results of sourceside voltages and injected voltages under double-phase to ground fault. The load voltage is maintained at the desired 1 p.u. as shown in Figure 5.8 (c). Figure 5.8. Simulation results for Case 2 DC link capacitor voltage is kept at reference value (1.7 kV) by DC-DC Converter. DC link capacitor voltage (V cap ) varies between 1.627-1.651 kV band 92

5. SIMULATION RESULTS <strong>AND</strong> CASE STUDIES Mustafa İNCİ<br />

seen in Figure 5.18. Figure 5.8 (a) and 5.8 (b) show the simulation results of sourceside<br />

voltages and injected voltages under double-phase to ground fault. The load<br />

voltage is maintained at the desired 1 p.u. as shown in Figure 5.8 (c).<br />

Figure 5.8. Simulation results for Case 2<br />

DC link capacitor voltage is kept at reference value (1.7 kV) by DC-DC<br />

Converter. DC link capacitor voltage (V cap ) varies between 1.627-1.651 kV band<br />

92

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