液压蓄能式风力发电机组蓄能发电系统的转速刚度的研究  

Research on Rotational Stiffness of Storage Power Generation System of Hydraulic Energy Storage Tvpe Wind Turbine

作　　者：魏列江[1,2] 王刚 赵宇阳 王应周 罗兰 WEI Lie-jiang;WANG Gang;ZHAO Yu-yang;WANG Ying-zhou;LUO Lan(College of Energy and Power Engineering, Lanzhou Univ. of Tech., Lanzhou730050, China;Key Laboratory of Fluid Machinery and System, Lanzhou730050, China)

机构地区：[1]兰州理工大学能源与动力工程学院,甘肃兰州730050 [2]甘肃省流体机械及系统重点实验室,甘肃兰州730050

出　　处：《液压气动与密封》2019年第5期6-10,共5页Hydraulics Pneumatics & Seals

基　　金：国家自然科学基金(51765033);甘肃省科技重大专项(17ZD2GA010)

摘　　要：在液压蓄能式风力机组故障或无风时,蓄能器组代替液压泵单独作为动力源驱动变量马达带动同步发电机继续发电。该文以600kW液压蓄能式风力发电机组的蓄能发电系统为研究对象,建立蓄能发电系统的数学模型和仿真模型,针对蓄能器为变压力动力源和同步发电机对于变量马达恒转速输出控制的要求,提出基于容积调速的PID控制方法,并通过仿真和实验分析PID参数以及负载阶跃变化对系统转速刚度的影响规律。研究结果为蓄能发电系统的转速控制和负载加载提供理论依据与参考。The case of hydraulic energy storage type wind turbine failure or no wind, accumulator group replaces hydraulic pump separately as power source and drives variable motor to drive the synchronous generator to continue to generate power. Based on the 600 kW hydraulic energy storage type of wind turbine energy storage power generation system as research object, establishing storage generating system of mathematic model and simulation model. Aiming synchronous generator constant speed and variable pressure power supply, a PID control method based on the volume control is put forward, and through the simulation and experimental analysis of PID parameters and load step changes of rotational speed of the system stiffness are studied. The research results provide theoretical basis about reference for the speed control and loading of energy storage power generation system.

关 键 词：风力发电机组 液压蓄能 恒速控制 变压力 转速刚度 

分 类 号：TH137[机械工程—机械制造及自动化]