液压发电系统压力脉动仿真研究

液压系统所具备的柔性二次能量转换的优势使液压发电技术成为当前新能源发电领域的热门,但是液压系统的动态特性及脉动特性对整个发电系统的工作性能、工作精度和稳定性等都具有重要影响.以液压发电系统为研究对象,基于AMESim建立了液压系统的动态仿真模型,系统研究了泵转速、系统压力和管道长度对系统压力脉动的影响规律,探讨了双泵并...

Simulation Study on Pressure Pulsation of Hydraulic Power Generation System

The advantages of the flexible secondary energy conversion of the hydraulic system make the hydraulic power generation technology become a trending technology in the field of new energy power generation. However, the dynamic characteristics and pulsation characteristics of the hydraulic system have an important impact on the performance, accuracy and stability of the whole power generation system. Based on AMESim, a dynamic simulation model of the hydraulic power generation system is established. The influences of pump speed, system pressure and pipeline length on the system pressure pulsation are studied systematically, and the suppression effect of the parallel connection of two pumps on the pressure pulsation is discussed. The simulation results show that the increase of pump speed and system pressure will lead to the increase of system pressure pulsation. When the pump speed is increased by 10 r/min, the pressure pulsation rate is increased by more than 5.16% on average; when the load pressure is increased by 2.5 MPa, the pressure pulsation rate increases by more than 5.88% on average; the increase of the length of the hydraulic pipeline plays an important role in restraining the pressure pulsation to a certain extent; when the distributed double pumps are used in parallel operation, the system pressure pulsation is reduced by more than 40% compared with the single pump operation, which has a good effect on the pressure pulsation of hydraulic system. Finally, a more accurate and efficient method for the research and optimization of hydraulic system pulsation is provided by using AMESim.