2×100MW发电厂电气部分设计毕业设计

X23?X19?X9?X11?0.240?0.137?0?0.377 X24?

XL5?11XL1??0.302?0.151 22X13?X14?X20?0.044?0.371?0.411

X13?X14X26?X24?XL5?X24?XL5?0.872 XSXL5?XS?0.424 X24X25?XL5?XS? 21

转移电抗 XG1f?XG2f?0.132?2?0.264 XG3?4f?X23?0.377 XG5?6f?X24?0.872

XSf?X25?0.424

计算电抗 XjsG1?XjsG2?XG1fS?N?0.246?SB501000.85?0.311 100XjsG3.4?XG3.4fS?N?0.377?SBS?N?0.872?SB?20.8?0.471 100?20.8?1.09 10050XjsG5.6?XG5.6fXjs?s?Xs?f?SN500?2.12 ?0.424?100SB查运算曲线得电流周期分量标幺值

t?0s时

IG0??IG0??3.40 IG123.40??2.23 IG?5.60?0.94 IS0??0.45

?0.87 IS0.2??0.48

t?0.2s时

IG0.2??IG0.2??2.62 IG12?3.40.2?1.85 IG?5.60.2I 有名值

If0?IG10?IG20?IG3.40?IS0 ?IG0??1SG13U0.V?IG0??2SG23U0.V?IG3.40??SG3.43U0.V?IG5.60??SG5.63U0.V?IGS0??S3U0.V

10050?250?25000.85?2?2.23?0.8?0.94?0.8?0.45? ?3.4?

3?1153?1153?1153?115 ?7.130KA

If0.2?IG10.2?IG20.2?IG3.40.2?IS0.2?IG0.2??1

SG13U0.V?IG0.2??2SG23U0.V?IG?3.40.2?SG3.43U0.V?

22

IG?5.60.2?SG5.63U0.V?IGS0.2??S3U0.V

10050?250?25000.850.8?2.62??2?1.85??0.87?0.8?0.48?

3?1153?1153?1153?115?6.008KA

4.6.2当f2点短路时：

X19?X1?X3?0.156?0.108?0.264

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X20??X5?X7???X6?X8??0.240

?X5?X7???X6?X8??X15?X17???X16?X18??0.25

?X15?X17???X16?X18?X13?X14?0.044

X13?X1411XL3??0.302?0.151 22X21?X22?XL5?

X23?X20?X9?X10?0.240?0.137?0?0.377 X24?X21?X22?0.294

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