摘要
针对某兆瓦级风力发电机试验台联轴器打滑,基于惠斯通电桥测试原理,测试联轴器转矩,结合变流器Crowbar故障触发机理,分析联轴器打滑原因,诊断该故障原因为变流器母线过压触发Crowbar故障,反馈转矩大于联轴器额定转矩1.69倍,导致联轴器超载打滑,提出优化Crowbar投入时发电机转速等多项措施,经人为触发故障进行试验测试,验证改善措施的有效性,为风力发电机分析现场打滑故障提供了新的思路及对策。
In order to solve the slip of a MW-class wind turbine test-stand coupling,the torque of the coupling is tested based on the Wheatstone bridge test principle.Combined with the Crowbar fault trigger mechanism of the converter,the cause of the slip of the coupling is analyzed.The cause of the fault is the Crowbar fault caused by the overvoltage of the converter bus.The feedback torque is greater than the rated torque of the coupling by 1.69 times,resulting in overloading of the coupling.It proposes a number of measures such as optimizing the generator speed when Crowbar is put into operation.The test is tested by human-induced faults to verify the effectiveness of the improvement measures,and provide new ideas and countermeasures for wind turbines to analyze the on-site slippage faults.
作者
姜圣
李建涛
叶昌煜
符智
JIANG Sheng;LI Jiantao;YE Changyu;FU Zhi(Research Institute,Sany Group,Changsha 410100,China)
出处
《机械工程师》
2018年第9期170-172,共3页
Mechanical Engineer
