Join 60,000+ competitive exam aspirants
or with email
Your Cart
SubtotalтВ╣0
TotalтВ╣0
Examoogle тАв User тАв info@examoogle.com тАв EE-2024-8821
Chapter 1 of 12 тАв Page 1 of 248ЁЯФТ Protected PDF тАв Watermarked
Join 60,000+ competitive exam aspirants
In HVDC system what would be sequence of the parameter conversion from sending end side to receiving end side?
dc-dc-ac-dc
ac-dc-dc-ac
ac-ac-dc-ac
dc-ac-dc-ac
ac-dc-dc-ac
Quick Trick: Remember the HVDC flow: Generation and Distribution are always AC, so the process must start and end with AC, with DC in the middle for the transmission link.
Remember the HVDC flow: Generation and Distribution are always AC, so the process must start and end with AC, with DC in the middle for the transmission link.
Analyze the Grid Requirements
Power plants generate AC, and home/industrial loads consume AC. Therefore, the sequence must begin and terminate with AC.
Analyze the Transmission link
HVDC stands for High Voltage Direct Current. The link between the sending and receiving station must be DC, necessitating a conversion from AC to DC at the sending end (Rectifier) and DC to AC at the receiving end (Inverter).
Construct the Sequence
Start: AC source тЖТ Rectifier (Converts to DC) тЖТ DCTransmission Link тЖТ Inverter (Converts to AC) тЖТ End: ACGrid. Sequence: AC - DC - DC - AC.
A: Starts and ends with DC which is impossible for standard AC grids; C: Indicates AC transmission which negates the purpose of an HVDC system; D: Incorrectly identifies the middle stages as AC transmission.
B is correct because an HVDC system functions by converting generated AC to DC via a rectifier for efficient transmission, and then back to AC via an inverter for local distribution.
In any power conversion question, always identify the 'source' (Generation) and 'load' (Distribution). If both are AC, the conversion sequence must begin and end with AC.