带分流叶片水泵水轮机甩负荷过渡过程中的压力脉动特征OA北大核心CSTPCD
Characteristics of pressure fluctuation in pump turbines with splitter blades during the load rejection transient process
为减轻水泵水轮机过渡过程中剧烈压力脉动对抽水蓄能电站安全产生的不利影响,需充分认识水泵水轮机的压力脉动特征.本文对某带分流叶片水泵水轮机甩负荷过渡过程中的实测压力脉动数据开展深入研究.首先从压力脉动的频域特性出发,提出了一种基于变分模态分解的时均压力和脉动压力提取方法.然后采用傅里叶变换和短时傅里叶变换分析水泵水轮机稳定运行和甩负荷过程中蜗壳进口、无叶区、顶盖和尾水锥管进口的脉动压力,揭示了带分流叶片水泵水轮机在稳定运行和甩负荷过渡过程中压力脉动…查看全部>>
In order to reduce the adverse effects of severe pressure pulsations generated during the transition process of the pump turbine on the safety of pumped storage power stations,it is necessary to fully understand the characteristics of pressure pulsation of pump-turbine.This paper conducts an in-depth study on the measured pres-sure data of the pump-turbine with splitter blades during the load rejection transition process.First,a method for extracting time-av…查看全部>>
周廷鑫;俞晓东;张健;徐辉
河海大学水利水电学院,江苏南京 210098河海大学水利水电学院,江苏南京 210098河海大学水利水电学院,江苏南京 210098河海大学水利水电学院,江苏南京 210098
水利科学
分流叶片水泵水轮机过渡过程压力脉动信号处理
pump-turbine with splitter bladestransition processpressure pulsationssignal processing
《水利学报》 2024 (9)
1098-1109,12
国家自然科学基金面上项目(52179062,51839008)
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