水电站机电技术2026，Vol.49Issue(4)：1-5,5.DOI:10.13599/j.cnki.11-5130.2026.04.001
基于非设计工况运行的卧式水轮机增效扩容技术研究
Research on efficiency improvement and capacity expansion technology for horizontal hydroturbines operating under off-design conditions
肖志勇 1孙波 2周捷2
作者信息
- 1. 河北华电混合蓄能水电有限公司,河北 石家庄 050000
- 2. 华电电力科学研究院有限公司,浙江 杭州 310000
- 折叠
摘要
Abstract
To solve the problems such as runner cracks,aggravated cavitation,and relatively low efficiency caused by the long-term operation of horizontal-shaft Francis hydroturbines in the high-head range and the mismatch between the original design parameters and the actual operating conditions in a hydropower plant,and to achieve the efficiency improvement and capacity expansion of the hydroturbines,the key parameters such as rated head and output of the hydroturbines,were optimized based on the actual operation data of the hydropower plant.Based on the actual operation range,the runners matching the operating head parameters and having better performance were selected,and the material upgrade and structural retrofitting were carried out on core components such as the volute and gate operating mechanism.After the retrofitting,the efficiency of hydroturbines is improved,the high-efficiency operation range closely matches the main operating head range of the hydropower plant,and the efficiency of hydroturbines under rated conditions is increased to 92.02%,significantly improving hydroturbine operation stability and economic benefits under main operating conditions.This study establishes a technical route for efficiency improvement and capacity expansion of horizontal-shaft Francis hydroturbines based on operation data analysis,combined with parameter optimization and component retrofitting.It can provide engineering reference for the retrofitting of similar hydroturbines under high head operating conditions.关键词
卧式水轮机/转轮/增效扩容/机组运行稳定性Key words
horizontal hydroturbine/runner/efficiency improvement and capacity expansion/hydroturbine operation stability分类
能源科技引用本文复制引用
肖志勇,孙波,周捷..基于非设计工况运行的卧式水轮机增效扩容技术研究[J].水电站机电技术,2026,49(4):1-5,5.
