液压型风力发电机组低电压运行特性分析  

Low Voltage Operation Characteristics of Hydraulic Wind Turbine

作　　者：陈革新[1] 艾超[2,3] 张亮[1] 刘旋[1] 陈立娟[1] 孔祥东[2,3] 

机构地区：[1]燕山大学机械工程学院,河北秦皇岛066004 [2]燕山大学河北省重型机械流体动力传输与控制实验室,河北秦皇岛066004 [3]先进锻压成型技术与科学教育部重点实验室(燕山大学),河北秦皇岛066004

出　　处：《液压与气动》2017年第7期33-42,共10页Chinese Hydraulics & Pneumatics

基　　金：国家自然科学基金(51475406);河北省高等学校科学技术研究青年基金项目(QN20132017);燕山大学青年教师自主研究计划课题(13LGB005)

摘　　要：以液压型风力发电机组为研究对象,分析机组在低电压工况下的运行特性。结合低电压穿越要求,完善并分析液压型风力发电机组工作原理。建立电压跌落时风力机、定量泵-变量马达液压调速系统以及发电机的暂态数学模型。以数学模型为基础搭建MATLAB/Simulink仿真平台,并在不同跌落深度下分别对三相电压等幅跌落、两相对地短路故障和单相对地短路故障进行低电压运行特性仿真分析。研究结果揭示了不同故障下机组低电压运行的特性规律,其中电流过载与电磁转矩产生脉振是机组低电压运行的重要表征现象。研究工作将为该机型低电压穿越控制提供一定的理论基础和技术手段。Taking the hydraulic wind turbine as the research object, we analyse the operation characteristics of the hydaulic wind turbine under the low voltage condition. The working principle of the hydraulic wind turbine ana- lyzed. The transient mathematical models of the wind turbine, quantitative pump variable motor hydraulic speed control system and the generatorg are established. The MATLAB/Simulink simulation platform is built based on the mathematical model, and the simulation analysis of low voltage operation of three phase voltage drop, two relative short circuit fault and single phase short circuit fault are carried out at different depths. The research results show the characteristics of the low voltage operation in the hydraulic wind turbine under different fault conditions, and the current overload and electromagnetic torque generating pulse vibration are the important characterization phenome- nons of the low voltage operation in the hydraulic wind turbine. The research results will provide a theoretical basis and technical means for the low voltage ride through control of the hydraulic wind turbine.

关 键 词：风力发电 液压传动 低电压运行 过电流 脉振转矩 

分 类 号：TH137[机械工程—机械制造及自动化] TK8[动力工程及工程热物理—流体机械及工程]