660MW超超临界汽轮机自启动控制策略及其热应力计算

Thermal Stress Calculation and Overall Self-startup Control Strategy of 660 MW Ultra-supercritical Steam Turbines

以华电望亭发电厂3号机组为例,介绍上海汽轮机厂引进的德国西门子公司超超临界汽轮机自启动控制系统策略,详细阐述了数字电液(DEH)控制系统自启动的控制步骤,X准则、Z准则和控制裕度的计算方法以及相应的控制策略,为国内同类型机组的自启动控制设计提供了一个可借鉴的思路。

Taking No.3 unit in Wangting Power Plant as an example,the overall self-startup control strategy of 660 MW ultra-supercritical steam turbines introduced from Siemens by STC is introduced in the paper.The self-startup controlling step of DEH as well as X-criteria,Y-criteria and calculation of control margin is described in detail.It can provide a reference for self-startup control design of same type units at home.