中国电机工程学报2017，Vol.37Issue(10)：2933-2943,11.DOI:10.13334/j.0258-8013.pcsee.160908
基于线电压误差的永磁直驱风电系统变流器开路故障诊断
Fault Diagnosis of Open-circuit Faults in Converters of Direct-driven Permanent Magnet Wind Power Generation Systems Based on Line Voltage Errors
摘要
Abstract
The open-circuit faults in converters of direct-driven permanent magnet wind power generation system (D-PMWPGS) seriously affect the operation of the system.To improve the reliability of the system,it is necessary to detect the faults timely and to locate the fault switches.Hence,a diagnostic method is proposed for the open-circuit faults in converters of D-PMWPGS based on line voltage errors.In this method,the fault diagnosis and localization is achieved by the line voltage deviations between normal and faulty conditions,where the double standards of voltage amplitude and the time width are applied to further improve the reliability of the fault diagnosis.The line voltage errors are firstly compared to the preset threshold.Then a minimum detection time is established to avoid misdiagnosis due to the effect of measurement noise and external environment.Finally,the fault switches are judged by the fault location flags.Both the simulation and experimental results verify the effectiveness and reliability of the proposed diagnosis method.关键词
风力发电/永磁直驱/变换器故障/故障诊断/线电压Key words
wind power generation/direct-driven permanent magnet/converter fault/fault diagnosis/line voltage分类
信息技术与安全科学引用本文复制引用
杭俊,张建忠,程明,丁石川,李国丽..基于线电压误差的永磁直驱风电系统变流器开路故障诊断[J].中国电机工程学报,2017,37(10):2933-2943,11.基金项目
国家重点基础研究发展计划(973计划)(2013CB035603) （973计划）
国家自然科学基金项目(51137001,51507002,51577025,51607001) （51137001,51507002,51577025,51607001）
安徽省自然科学基金项目(1508085ME87,1708085QE108).Project Supported by the National Basic Research Program of China (973 Program) (2013CB035603) （1508085ME87,1708085QE108）
National Natural Science Foundation of China (51137001,51507002,51577025,51607001) （51137001,51507002,51577025,51607001）
Natural Science Foundation of Anhui Province of China(1508085ME87,1708085QE108). （1508085ME87,1708085QE108）
