摘要
Abstract
To address the issues of slow dynamic response,significant efficiency loss,and high water hammer risk in hydraulic turbines under variable operating conditions,the regulation strategy is optimized to improve frequency regulation quality,operational efficiency,and hydraulic safety.By constructing an integrated"unit-penstock system"model,a comprehensive evaluation index system for frequency regulation quality,efficiency and safety is established.An improved strategy combining zoned gain with feedforward compensation is designed and compared with a baseline PID control strategy,with simulation analysis conducted under three typical operating conditions.The results indicate that the improved strategy is significantly superior to the baseline strategy:the overshoot is reduced by an average of approximately 50%,the settling time is shortened by 3-5 seconds,the interval average efficiency is improved by 0.02-0.03,and the equivalent power generation gain reaches 1.8%-2.6%.Concurrently,the maximum pressure rise is reduced by 26%-30%,pressure pulsation amplitude decreases by 28%-30%,and safety is significantly enhanced.The zoned gain feedforward compensation strategy can effectively improve the comprehensive performance of hydraulic turbines under complex operating conditions and is recommended as the optimal regulation scheme for routine operation,providing higher-quality frequency regulation and peak-shaving support for the power grid.关键词
水轮机/调节策略/分区增益/前馈补偿/变工况Key words
hydraulic turbine/regulation strategy/zoned gain/feedforward compensation/variable operating conditions分类
能源科技
