Experimental study on back pressure correction coefficient of ultra-supercritical steam turbine

2018 International Conference of Green Buildings and Environmental Management

土木建筑工程;生态环境科学

Wan, Zhong-Hai^1 ; Cai, Wen^1 ; He, Jun^1 ; Yan, Tao^1 ; Yang, Hong-Yan^2

State Grid JiangXi Electric Power Research Institute, Nanchang, Jiangxi Province

330096, China^1

Shanghai Pengken Energy Technology Co. LTD, Shanghai

200090, China^2

关键词: Back pressures;    Circulating water system;    Energy saving analysis;    Low pressures;    Optimal operation;    Research object;    Supercritical steam turbines;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/186/5/012028/pdf
DOI  :  10.1088/1755-1315/186/5/012028

来源: IOP

【 摘 要 】

The micro increase output test is a reliable and effective way to obtain the back pressure correction curve of steam turbines. The test results are not only applicable to daily energy-saving analysis of steam turbines, but also instructive in the optimal operation of circulating water system. With a 660MW ultra-supercritical steam turbine unit as the research object, the back pressure correction curves of the unit THA condition, 75%THA condition and 50%THA condition were obtained by the micro increase output test. During the test, the flow of condensate was kept unchanged to avoid the influence of the changes of the low-pressure regenerative extraction flow on the test results.