首页|基于改进故障模式与影响分析的风电机组故障模式危害度研究

基于改进故障模式与影响分析的风电机组故障模式危害度研究

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故障模式与影响分析(FMEA)是辨识系统潜在故障模式,并评估其危害度的一种有效的可靠性分析方法.传统FMEA在分析过程中存在未考虑不同风险因素的权重、RPN对风险因素的变化敏感、难以处理专家主观评分信息以及未考虑故障模式间的传播影响关系等诸多缺陷.针对上述缺陷,提出了一种改进的FMEA方法.通过引入可靠性屋、粗糙集理论和理想点法来提高对故障模式危害度分析的准确性和客观性.相较于传统的FMEA,所提出的改进FMEA能够有效处理专家评分信息的主观性与不确定性问题,充分考虑了故障模式间的传播影响,能够在属性冲突及各种不确定性的情况下,对故障模式的风险等级进行排序.利用提出的改进FMEA对某型号风电机组的潜在故障模式进行了分析,获得了各故障模式的危害度排序以及各子系统的危害度排序.根据排序结果辨识出风电机组的可靠性薄弱环节和关键子系统,并给出各故障模式和各子系统的危害度权重,可为风电机组的可靠性优化设计提供数据支撑.
Research on the harmfulness of wind turbine failure modes based on improving FMEA
FMEA is an effective reliability analysis method for identifying potential failure modes in a system and evaluating their criticality.Conventional FMEA has many shortcomings such as not considering the weights of different risk factors,RPN being very sensitive to changes in risk factors,difficulty in handling expert subjective scoring information,and not considering the propagation and impact relationships between failure modes.Aiming at these shortcomings,an improved FMEA method was proposed by introducing house of reliability,rough set theory and VIKOR method to improve the accuracy and objectivity of risk priority analysis of failure modes.Compared with the conventional FMEA,the improved FMEA can not only effectively deal with the various subjectivities and uncertainties in the risk assessment process but also rank the risk of the identified failure modes with taking into account the effects of failure propagation,which is able to rank the risk priority of failure modes in the case of attribute conflict and various uncertainties.Based on the proposed FMEA,a real-word application of risk priority ranking of the failure modes in wind turbine was carried out and the risk priority order of each failure mode and each subsystem were obtained.According to the ranking results,the weak links and key subsystems of the reliability of wind turbine were identified,and the hazard weight of each failure mode and subsystem was given,which can provide data support for the reliability optimization design of wind turbine.

wind turbinefailure mode and effects analysishouse of reliabilityrough set theoryrisk points identification

汪臻、周建武、范光辉、潘强、王建阳、顾浩

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西安热工研究院有限公司,陕西 西安 710054

华能新疆能源开发有限公司,新疆 乌鲁木齐 830000

华能新疆能源开发有限公司清洁能源分公司,新疆 乌鲁木齐 830000

风电机组 故障模式与影响分析 可靠性屋 粗糙集理论 风险点辨识

中国华能集团有限公司新疆公司本部管理创新服务项目中国华能集团有限公司总部科技项目

HN-6800-202200018-JSJF00001HNKJ20-H72-02

2024

热力发电
西安热工研究院有限公司,中国电机工程学会

热力发电

CSTPCD北大核心
影响因子:0.765
ISSN:1002-3364
年,卷(期):2024.53(1)
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