Refer To The Hvdc Transmission System As Shown In Figure 2 Determine Based On The Below Conditions For The Hvdc Convert 1 (91.68 KiB) Viewed 28 times
Refer To The Hvdc Transmission System As Shown In Figure 2 Determine Based On The Below Conditions For The Hvdc Convert 2 (18.39 KiB) Viewed 28 times
Refer to The HVDC transmission system as shown in Figure 2. Determine based on the below conditions for the HVDC converter; i. ii. iii. iv. V. vi. The DC output voltage at firing delay angle = 14° and 139° (assuming no commutation angle µ in all valves). Discuss the outcome and difference at the DC link for both angles. Then, elaborate on the operation of the HVDC converter for both angles. If the commutation angle is considered and estimated up to 5º. Calculate the active power of the rectifier at the DC link for each firing angle in Q2 (b) (i). Then, explain how the commutation angle could happen in the HVDC converter. If the switching devices in the HVDC converter are replaced with a power diode, calculate the DC link voltage from this HVDC converter. For 0.5 kA of DC link current, then calculate the active power. 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 = 14°). If a minimum of 4° of firing angle is allowed to employ, what is the strategy in HVDC control to increase the DC link voltage up to 720 kV. Discuss and prove the answer from the theoretical analysis. Then, referring to Figure 2, discuss why HVDC converters at both terminals need to be coordinately controlled.
AC 3 495 kV, 50Hz DC line DC line AC 3
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