基于健康指数的直流断路器状态评估模型
郭德龙1段宏伟2徐维甲1徐杰1张明锐2
A DC Circuit Breaker Condition Evaluation Model Based on Health Indexes
GUO Delong1DUAN Hongwei2XU Weijia1XU Jie1ZHANG Mingrui2
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作者信息:1.上海地铁维护保障有限公司供电分公司， 201016， 上海
2.同济大学电子与信息工程学院， 201804， 上海
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Affiliation:1.Shanghai Metro Maintenance & Security Co., Ltd., Power Supply Branch, 201016， Shanghai, China
2.College of Electronic and Information Engineering, Tongji University, 201804, Shanghai, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2024.03.031
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中图分类号/CLCN:U224.2+3
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栏目/Col:研究报告
摘要:
［目的］直流断路器是地铁牵引供电系统的关键设备。为了通过采取合理的维保策略提高牵引供电系统可靠性，需准确评估直流断路器健康状态。［方法］采用健康指数表征设备整体健康状态，构建设备健康状态的综合评估模型。基于设备特征参数变化反映设备健康状态，合理选择评估指标建立设备运行状态多指标评估体系；结合层次法和熵权法改进各分项指标权重的计算方式，使得设备健康状态评估模型的建立更加合理；依据该评估模型计算设备健康指数，并建立基于历史健康数据的使用寿命模型来拟合设备健康指数的变化趋势，评估设备未来健康状态与预测设备剩余使用寿命；以某牵引变电站实际数据为例，对所提评估模型进行验证。［结果及结论］实例分析结果表明：该直流断路器状态评估模型具有一定的有效性与合理性，能够科学地对直流断路器健康状态与剩余使用寿命进行判断与预测。
Abstracts:
［Objective］ DC circuit breaker is a key equipment in metro traction power supply system. To improve the reliability of the traction and power supply system through reasonable maintenance strategy, it is necessary to evaluate the health condition of DC circuit breaker accurately. ［Method］ Health indexes are used to characterize the overall health condition of the equipment and establish a comprehensive evaluation model of the equipment health condition. On the basis that the changes of the equipment characteristic parameters reflect the equipment health condition, evaluation indexes are reasonably selected and a multi-index evaluation system of equipment operating condition is established. With the method of hierarchy and entropy weight, the calculation method of the weight of each sub-index is improved, making the equipment health condition evaluation model more reasonable. The equipment health index is calculated based on the evaluation model, and the service life model based on historical health data is established to fit the trend of the equipment health index, evaluate the future health condition and predict the remaining service life. The proposed evaluation model is validated by the actual data of a traction substation. ［Result & Conclusion］ The example analysis results show that the proposed evaluation model of DC circuit breaker is effective and rational to some extent in that it can scientifically judge and predict the healthy condition and remaining service life of the DC circuit breaker.
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