b) In the HVDC transmission system as shown in Figure 1, determine based on the below conditions for HVDC converter, i.

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B In The Hvdc Transmission System As Shown In Figure 1 Determine Based On The Below Conditions For Hvdc Converter I 1 (60.84 KiB) Viewed 19 times

b) In the HVDC transmission system as shown in Figure 1, determine based on the below conditions for HVDC converter, i. The DC output voltage at firing delay angle = 16° and 137° (assuming no commutation angle in all valves). Discuss the outcome and difference at the DC link for both angles. Then, elaborate on the operation for HVDC converter for both angles. If the commutation angle is considered and estimated up to 5°. Calculate the active power of the rectifier at the DC link for each firing angle in Q2 (b) (1). Then, explain how the commutation angle could happen in the HVDC converter. If the switching devices in the HVDC converter are replaced with power diode, calculate the DC link voltage from this HVDC converter. For 0.5 kA of DC link current, then calculate the active power. iv. If an output voltage of the converter is targeted to produce 600 kV and 850A of output current, determine the inductance reactance at the transformer side (assume firing delay angle = 16°). iii. V. If a minimum 4° of firing angle is allowed to employ, what is the strategy in HVDC control to increase the DC link voltage up to 680 kV. Discuss and prove the answer from the theoretical analysis. DC line dib DC line AC 3 3 450 kV, 60Hz Figure 1 AC 3 123 Marksl