نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشجوی دکتری مهندسی سیستم‌های انرژی، دانشکده مهندسی انرژی و منابع پایدار، دانشکدگان علوم و فناوریهای میان رشته ای، دانشگاه تهران
2 رئیس دانشگاه حمل و نقل و ترافیک شهرداری تهران
3 دانشکده علوم و فناوریهای میان رشته‌ای، دانشگاه تهران
چکیده
کلیدواژه‌ها
عنوان مقاله [English]
نویسندگان [English]
In DC electric rail systems, the use of running rails as the return path for the train’s electric current-due to the low electrical resistance (poor insulation) between the running rails and the ground, as well as the potential difference between the rails and the ground-leads to part of the return current leaking into the ground beneath the rails. This phenomenon, known as stray current or leakage current, can cause various issues, including electrochemical corrosion and a reduction in the service life of rails and nearby metallic underground infrastructure. Electrochemical corrosion caused by stray currents in metallic structures is a long-term process, and the results of irregular periodic measurements of stray currents cannot accurately reflect the extent of corrosion. Therefore, continuous measurement and monitoring of stray currents, along with analyzing their variation trends, is essential. This study explores the concept of Condition Monitoring (CM) and Condition-Based Maintenance (CBM), analyzing the structure of key standards in this field, such as ISO 13374 and the OSA-CBM standard. Finally, considering the frameworks of these referenced standards, a model is proposed for monitoring stray currents in a DC electric rail transportation system using a condition-based maintenance approach.
کلیدواژه‌ها [English]
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