| 引用本文: | 国连玉,李可军,梁永亮,孙立军.基于灰色模糊综合评判的高压断路器状态评估[J].电力自动化设备,2014,34(11): |
| GUO Lianyu,LI Kejun,LIANG Yongliang,SUN Lijun.HV circuit breaker state assessment based on gray-fuzzy comprehensive evaluation[J].Electric Power Automation Equipment,2014,34(11): |
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| 摘要: |
| 针对高压断路器状态评估因素具有模糊性和灰色性的特点，将灰色模糊理论应用到高压断路器的状态评估中。基于试点工程，建立考虑高压断路器运行机理的递阶层次评估模型；采用层次分析法计算各层次评估因素权重集的模部，结合信息充裕程度及专家经验，确定相应评估因素权重集的灰部；综合定性分析与定量分析，以隶属度描述评估因素与状态等级间的模糊关系，并引入点灰度描述模糊关系的不可信程度，建立灰色模糊判别矩阵，进而对高压断路器运行状态进行综合评估。实际算例表明，所提模型能够客观有效地评估高压断路器的状态。 |
| 关键词: 断路器 状态评估 模糊性 灰色模糊理论 递阶层次评估 层次分析法 模型 隶属度函数 |
| DOI： |
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| 基金项目:山东省科技发展项目（2014GGE27054） |
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| HV circuit breaker state assessment based on gray-fuzzy comprehensive evaluation |
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GUO Lianyu, LI Kejun, LIANG Yongliang, SUN Lijun
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School of Electrical Engineering，Shandong University，Ji’nan 250061，China
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| Abstract: |
| As the factors of ＨＶ（Ｈigh Ｖoltage） circuit breaker state assessment are fuzzy and gray，the gray-fuzzy theory is applied to it. A hierarchical evaluation model considering the operational mechanism is established based on a pilot project of HV circuit breaker. The weight set of each assessment factor at different levels is composed of fuzzy part and gray part. Its fuzzy part is calculated based on the ＡＨＰ（Analytic Hierarchy Process） and its gray part is determined based on the redundancy degree of information and the experiences of experts. The fuzzy relation between assessment factor and state grade is described by the membership degree to combine qualitative analysis and quantitative analysis. The incredibility of fuzzy relation is described by the pixel gray scale to establish the gray fuzzy discrimination matrix for the comprehensive assessment of HV circuit breaker state. The practical calculation example shows that the proposed model can objectively and effectively assess the state of HV circuit breakers. |
| Key words: electric circuit breakers state assessment fuzzyness gray-fuzzy theory hierarchical evaluation analytic hierarchy process models membership functions |
