CHEN Zhigang1, ZHAO Zhidan1, ZHANG Diancong2, et al. OPTIMIZATION OF CONTROL STRATEGE FOR TEMPERATURE-REDUCING REGULATION OF LOW-PRESSRUE SHAFT SEAL ON STEAM TURBINES[J]. Thermal power generation, 2010, 39(6): 51-52.
CHEN Zhigang1, ZHAO Zhidan1, ZHANG Diancong2, et al. OPTIMIZATION OF CONTROL STRATEGE FOR TEMPERATURE-REDUCING REGULATION OF LOW-PRESSRUE SHAFT SEAL ON STEAM TURBINES[J]. Thermal power generation, 2010, 39(6): 51-52.DOI:
Accurate and stable temperature and pressure control of shaft seal on steam turbines are vital importance for safe operation of steam turbine.Through analysis of large deviation problem existing in temperature control of low-pressure shaft seal in operation process of the shaft seal system for steam turbines of 2×600 MW units in Heyuan Power Plant of Guangdong Province
the original control strategy has been optimized by using cascade loops and variable integral parameters control.After optimization
the temperature of low-pressure shaft seal has been controlled within ±2 ℃ of dynamic deviation