單項(xiàng)選擇題電網(wǎng)發(fā)生擾動后,在電網(wǎng)電壓和頻率恢復(fù)正常范圍之前光伏電站不允許并網(wǎng),且在電網(wǎng)電壓和頻率恢復(fù)正常后,小型光伏電站應(yīng)經(jīng)過一個可調(diào)的延時(shí)時(shí)間后才能重新并網(wǎng),延時(shí)時(shí)間一般為()。

A.20s~1min
B.1min~5min
C.20s~5min
D.5min~10min


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