单选题:某35kV变电所中设两台主变压器,每台变压器配置1组电容器补偿装置,电抗率为12%,35kV母线短路容量为500MVA,

题目内容:
某35kV变电所中设两台主变压器,每台变压器配置1组电容器补偿装置,电抗率为12%,35kV母线短路容量为500MVA,已运行的补偿容量为12Mvar,由于负荷波动,每次自动投入的分组补偿容量为334kvar,请问电容器组投人时的涌流标幺值为下列哪项数值?(  ) A.3.82
B.8.31
C.3.88
D.8.39

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