某工程,500kV母线穿越功率为2500MW, 500kV母线短路参数:I"=27.19kA,I∞=24.22kA,71.24kA,短路热效应Q=95....

作者: rantiku 人气: - 评论: 0
问题 某工程,500kV母线穿越功率为2500MW, 500kV母线短路参数:I"=27.19kA,I∞=24.22kA,71.24kA,短路热效应Q=95.6kA2s;计算时间:t=0.1",环境最髙温度为+29.7℃,海拔髙度为400m,500kV母线选用2XLGJQT—1400。 校验电晕电压值应( )550kV。
选项 A.小于; B.大于; C.等于; D.不大于。
答案 B
解析 根据DL/T5222—2005第7.1.7条,校验电晕电压值应大于550kV。

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