兆瓦级风电机组低电压穿越过程运行特性分析

Analysis on Operation Characteristics of MW-Level Wind Turbine During Low Voltage Ride Through

针对目前研究中陆上大型双馈风电机组低电压穿越(LVRT)过程运行特性研究不足,且缺乏测试仿真对比验证分析的现状,对某兆瓦级陆上风电机组,建立GH Bladed仿真模型,研究低电压故障过程中机组运行特性及关键部位载荷特性。同时,对该机组实际型式试验测试数据进行分析,对特定LVRT工况进行仿真,对比分析故障对于机组运行特性影响以及对塔架载荷的影响。仿真及测试结果都表明LVRT故障对机组塔架载荷有重要影响,且在大风工况下影响更大。

In view of the lack of research on the operation characteristics of large onshore doubly fed wind turbine during low voltage ride through(LVRT)and the lack of comparative verification of test and simulation,a GH Bladed simulation model is established for a MW-level onshore wind turbine to study the operation characteristics and load characteristics of key components during low voltage fault.At the same time,the actual type test data of the turbine are analyzed,and the specific LVRT conditions are simulated to compared and analyze the influence of the fault on the operation characteristics and the tower load.The simulation and test results show that the LVRT fault has an important impact on the tower load,and the impact is greater under strong wind conditions.