根据广东省韶关电厂８号机调峰运行的试验数据，运用九节点等参单元的有限元计算程序，对国产２００ＭＷ汽轮机高、中压转子在不同变负荷率下进行了温度场和热应力场的数值计算，并计算了低负荷调峰方式下滑压运行时的转子低周疲劳寿命损耗，为确定该型机组的最佳低负荷调峰运行曲线提供理论依据。 According to the experimental data of peak shaving operation of PM 8 in Shaoguan Power Plant of Guangdong Province, the temperature field and thermal stress field of high and medium pressure rotors of domestic 200 MW steam turbine under different load rates were studied by using the finite element method of the nine-node isoparametric unit. The calculation of the low-cycle fatigue life loss of the rotor under the condition of low-load peak-shaving is carried out to provide the theoretical basis for determining the optimal low-load peak-shifting operation curve of the unit.