F203 STUDY ON THE THERMAL PARAMETERS' DETERMINATION METHOD OF ULTRA SUPERCRITICAL THERMAL POWER GENERATING UNITS(Steam Turbine-1)

Abstract

Supercritical and ultra supercritical thermal power generating units are the major development power generating units. The main steam parameters of thermal power generating units directly affect on the generating efficiency and pollutant emission. In this paper, the state-of-the-art of oversea supercritical and ultra supercritical thermal power generating units was analyzed. Under the condition of the domestic technology and manufacture capacity, and based on the generating efficiency and unit performance meeting of requirement, the thermal parameters' determination method of ultra supercritical thermal power generating units was studied. Main steam pressure is generally less than 27.56 MPa, and the temperature of main steam and reheated steam is about 600℃.