SAFETY EVALUATION OF ISOLATED ISLAND OPERATION ON 1000MW STEAM TURBINE IN NPP

被引：0

作者：

Hu, Xiao-dan ^{[1
]}

Chen, Xu ^{[1
]}

Wu, Fan ^{[1
]}

Shi, Rui ^{[1
]}

Jiang, Wei ^{[1
]}

Chen, Tao ^{[1
]}

Yue, Ya-nan ^{[1
]}

Xie, Dan-mei ^{[1
]}

机构：

[1] Wuhan Univ, Wuhan 430072, Hubei, Peoples R China

来源：

PROCEEDINGS OF ASME 2023 INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION, IMECE2023, VOL 7 | 2023年

基金：

中国国家自然科学基金;

关键词：

isolated island operation; safety evaluation; steam turbine in NPP;

D O I：

暂无

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

changes in load, mass flow and temperature during isolated island operation, which increases the chance of unit failure. In fact, cases of unsuccessful isolated island operation tests have occurred. Therefore, it is necessary to analyze the safety of steam turbine in NPP under isolated island operation condition. For safety assessment, the key factors influencing the safety of steam turbine in NPP under isolated island operation condition were simulated. The results shows that: under 100%PN load rejection, the highest dynamic speed overshoot of steam turbine is 4.99%, the maximum centrifugal stress of rotor is 262.61 MPa, the exhaust steam temperature of HP cylinder is increased by 47 degrees C, and the critical mass flow condition for flutter of a typical type LSB (last-stage blade) is predicted. These results are within the range specified in the operating regulations for NPPs' isolated island operation, indicating that the safety of 1000MW steam turbine is satisfactory.

引用

页数：7

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