某660MW机组汽轮机热态启动最佳温升率的确定  

Determination of the Optimal Temperature Rise Rate for Hot Startof a 660MW Steam Turbine Unit

作　　者：王海月[1] 王行[2] 王艳红[3] WANG Hai-yue;WANG Hang;WANG Yan-hong(Changchun Polytechnic,Changchun 130033,China;Jilin Electric Power Research Institute Co.,Ltd.,Changchun 130021,China;School of Energy and Power Engineering,Northeast Electric Power University,Jilin 132012,China)

机构地区：[1]长春职业技术学院,长春130033 [2]吉林省电力科学研究院有限公司,长春130021 [3]东北电力大学能源与动力工程学院,吉林132012

出　　处：《汽轮机技术》2024年第5期393-397,共5页Turbine Technology

摘　　要：为进一步缩短火电机组热态启动时间,满足机组快速启动参与电网调峰的要求,以某660MW汽轮机组热态启动为例,编制程序确定不同启动阶段转子表面的蒸汽参数及换热系数,之后采用ANSYS软件对汽轮机热态启动下的转子温度场及应力场进行了数值模拟计算,分析了汽轮机转子重点监测部位热应力随温升率变化规律。并从不同温升率启动对汽轮机转子低周疲劳寿命的损耗进行分析,得到了机组热态启动的最佳温升率。研究结果可使汽轮机组热态启动下相比设计条件下缩短启动时间18%。所做工作对大型火电机组深度调峰具有一定参考价值。To further shorten the hot start time of thermal power unit and meet the requirements of rapid start to participate in the peak regulation of power grid.Based on the thermal start of a 660MW steam turbine set as an example,in this paper,the developed program is used to determine the steam parameters and heat transfer coefficient of the rotor surface at different start-p stages.Subsequently,ANSYS software is used to numerically simulate the temperature and stress fields of the rotor during hot start of the steam turbine.The variation pattern of the thermal stress in the key monitoring parts of the steam turbine rotor is analyzed.Besides,the loss of low cycle fatigue life of steam turbine rotor is analyzed from different temperature rise rates,and the optimal temperature rise rate for hot start of the unit is obtained.From the results,the hot starting time of the steam turbine unit can be shortened by 18%compared with the design condition.The work done has certain reference value for the deep peak regulation of large thermal power units.

关 键 词：汽轮机 转子 热态启动 热应力 温升率 

分 类 号：TM621[电气工程—电力系统及自动化]