WANG Xihui, ZHU Xiaoxing, CHEN Houtao, et al. Application of Steam Temperature Control Technology of Wide Load Peak Shaving for Thermal Power Unit[J]. 2022, 42(5): 95-100.
WANG Xihui, ZHU Xiaoxing, CHEN Houtao, et al. Application of Steam Temperature Control Technology of Wide Load Peak Shaving for Thermal Power Unit[J]. 2022, 42(5): 95-100. DOI: 10.3969/j.issn.1008-0198.2022.05.017.
Application of Steam Temperature Control Technology of Wide Load Peak Shaving for Thermal Power Unit
The steam temperature control method is put forword
and an improved PID control algorithm is designed in the cooling water control circuit
and a modified instruction with self-learning function is introduced to adjust the parameters. In the coordinated control loop
a coordinated control algorithm based on running state analysis and humanoid modification is designed. In practical application
the steam temperature of a 630 MW supercritical unit is well controlled in wet stable operation and variable load operation
dry stable operation and variable load operation under 28.7%~100% rated load interval
the control quality of some working conditions has improved more than 60% compared with the industry standard. When a 1 000 MW ultra-supercritical unit is running in 30%~100% rated load range
the steady state control quality of steam temperature is improved 30%~60% compared with the industry standard.