运用九节点等参单元的有限元计算程序，根据广东韶关电厂调峰运行试验数据，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。 Based on the experimental data of peak shaving operation of Shaoguan Power Plant in Guangdong Province, the numerical simulation of temperature field and thermal stress field of high and medium pressure rotors of domestic 200 MW steam turbine under different load rates are carried out by using the finite element program of 9-node isoparametric unit. The low-cycle fatigue life loss of the rotor under the condition of low load and peak load regulation is calculated, which provides a theoretical basis for determining the optimal low-load peak-load operation curve of this type of unit.