某区域电网中现运行一座500kV变电所,根据负荷发展情况需要扩建,该变电所现状、本期及远 景规模如下表:该变电所现有750MVA主变阻抗电压百分比为U...

作者: rantiku 人气: - 评论: 0
问题 某区域电网中现运行一座500kV变电所,根据负荷发展情况需要扩建,该变电所现状、本期及远 景规模如下表:
选项 该变电所现有750MVA主变阻抗电压百分比为Uk1-2%=14%,本期扩建的2*1000MVA主变阻抗电压百分比采用Uk1-2%=16%
答案 D
解析 依据教材,当并列运行的变压器的阻抗电压不等时,变压器所带负荷与阻抗大小成反比

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