RISK PRIORITY EVALUATION OF POWER TRANSFORMER PARTS BASED ON HYBRID FMEA FRAMEWORK UNDER HESITANT FUZZY ENVIRONMENT

IF 10.1 2区工程技术 Q1 ENGINEERING, MECHANICAL

Facta Universitatis-Series Mechanical Engineering Pub Date : 2022-07-28 DOI:10.22190/fume220223013z

Bin Zhou, Jing Chen, Qun Wu, D. Pamučar, Weizhong Wang, Ligang Zhou

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引用次数: 36

Abstract

The power transformer is one of the most critical facilities in the power system, and its running status directly impacts the power system's security. It is essential to research the risk priority evaluation of the power transformer parts. Failure mode and effects analysis (FMEA) is a methodology for analyzing the potential failure modes (FMs) within a system in various industrial devices. This study puts forward a hybrid FMEA framework integrating novel hesitant fuzzy aggregation tools and CRITIC (Criteria Importance Through Inter-criteria Correlation) method. In this framework, the hesitant fuzzy sets (HFSs) are used to depict the uncertainty in risk evaluation. Then, an improved HFWA (hesitant fuzzy weighted averaging) operator is adopted to fuse risk evaluation for FMEA experts. This aggregation manner can consider different lengths of HFSs and the support degrees among the FMEA experts. Next, the novel HFWGA (hesitant fuzzy weighted geometric averaging) operator with CRITIC weights is developed to determine the risk priority of each FM. This method can satisfy the multiplicative characteristic of the RPN (risk priority number) method of the conventional FMEA model and reflect the correlations between risk indicators. Finally, a real example of the risk priority evaluation of power transformer parts is given to show the applicability and feasibility of the proposed hybrid FMEA framework. Comparison and sensitivity studies are also offered to verify the effectiveness of the improved risk assessment approach.

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犹豫模糊环境下基于混合fmea框架的电力变压器零部件风险优先度评价

电力变压器是电力系统中最关键的设备之一，其运行状况直接影响到电力系统的安全运行。对电力变压器零部件的风险优先度评价进行研究是十分必要的。失效模式和影响分析(FMEA)是一种分析各种工业设备系统内潜在失效模式(FMs)的方法。本研究提出了一种结合新型犹豫模糊聚合工具和critical (Criteria Importance Through Inter-criteria Correlation)方法的混合型FMEA框架。该框架采用犹豫模糊集(hfs)来描述风险评估中的不确定性。然后，采用改进的HFWA(犹豫模糊加权平均)算子对FMEA专家进行风险融合评估。这种聚合方式可以考虑hfs的不同长度和FMEA专家之间的支持程度。其次，提出了一种新的具有critical权重的HFWGA(犹豫模糊加权几何平均)算子来确定每个FM的风险优先级。该方法能够满足传统FMEA模型中RPN(风险优先级数)方法的乘法特性，反映风险指标之间的相关性。最后，以电力变压器零件风险优先度评估为例，验证了混合FMEA框架的适用性和可行性。还提供了比较和敏感性研究，以验证改进的风险评估方法的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Facta Universitatis-Series Mechanical Engineering ENGINEERING, MECHANICAL-

CiteScore

14.40

自引率

2.50%

发文量

审稿时长

6 weeks

期刊介绍： Facta Universitatis, Series: Mechanical Engineering (FU Mech Eng) is an open-access, peer-reviewed international journal published by the University of Niš in the Republic of Serbia. It publishes high-quality, refereed papers three times a year, encompassing original theoretical and/or practice-oriented research as well as extended versions of previously published conference papers. The journal's scope covers the entire spectrum of Mechanical Engineering. Papers undergo rigorous peer review to ensure originality, relevance, and readability, maintaining high publication standards while offering a timely, comprehensive, and balanced review process.