水力发电学报2026，Vol.45Issue(8)：60-70,11.DOI:10.11660/slfdxb.20260806
AGC下轴流转桨式转轮疲劳优化与定桨应急策略
Study on fatigue optimization and fixed-pitch emergency strategy of Kaplan runners under AGC mode
摘要
Abstract
The new-type power system is subjected to a sharp increase in its unit regulation frequency under the Automatic Generation Control(AGC)mode,and long-term high-frequency alternating stress in a large-scale axial-flow Kaplan turbine runner causes fatigue damage to its key transmission components such as the operating frame and rocker arm.To meet the system's operation demand and prevent such damage,this paper presents a systematic study on the fatigue prevention and control method and how to handle the key runner component emergency.We develop a three-dimensional simulation model of the operating frame and the rocker arm in the framework of the ANSYS Workbench finite element code,based on the real crack fault cases of key runner components at the Shawan and Angu hydropower stations on the Dadu River.The fatigue characteristics of core components under the AGC conditions are examined in detail,structural weak areas identified,and targeted optimization schemes suggested.We work out an emergency strategy for fixed-pitch operation of the Kaplan runners under the extreme working conditions that usually cause a failure of the runner transmission mechanism.Specific points for implementing engineering measures are clarified from the aspects of feasibility demonstration,blade angle selection,regulation mode adjustment,blade positioning technology,and operation&maintenance control.We have achieved a full-process technical system of"fatigue analysis-structural optimization-emergency disposal".Our results help the safe and stable operation of axial-flow Kaplan runners under the AGC mode,and would guide designing engineering measures for fatigue damage prevention and emergency handling of similar generating units.关键词
AGC模式/轴流转桨式转轮/关键部件/疲劳分析/结构优化/定桨应急Key words
AGC mode/axial-flow Kaplan runner/key components/fatigue analysis/structural optimization/fixed-pitch emergency operation分类
能源科技引用本文复制引用
张冰雪,赖真明,王宇亮,杨博涵,王先政,尹燕辉,鄢天留,刘姗,史广泰..AGC下轴流转桨式转轮疲劳优化与定桨应急策略[J].水力发电学报,2026,45(8):60-70,11.基金项目
四川省自然科学基金杰出青年科学基金(2024NSFJQ0012) （2024NSFJQ0012）
国家自然科学基金区域创新发展联合基金重点项目(U23A20669) （U23A20669）
