Which of the following states the DC grid's importance over the AC grid? I. Relatively easier frequency and VAr control II. Absence of reactive power control III. Reduced power congestion IV. Reduced system losses I, II, and III II, III, and IV I, III, and IV I, II, and IV
Question
Which of the following states the DC grid's importance over the AC grid? I. Relatively easier frequency and VAr control II. Absence of reactive power control III. Reduced power congestion IV. Reduced system losses I, II, and III II, III, and IV I, III, and IV I, II, and IV
Solution
The DC grid's importance over the AC grid can be stated as follows:
I. Relatively easier frequency and VAr control: In a DC grid, the frequency is zero, and there is no concept of reactive power (VAr), making control easier compared to an AC grid.
III. Reduced power congestion: DC grids can transmit power over long distances without the need for synchronization, reducing power congestion.
IV. Reduced system losses: DC grids have lower transmission losses compared to AC grids because they do not have the reactive power losses that AC systems do.
Therefore, the correct answer is I, III, and IV.
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