Title: Reliability Assessment & Improvement of MCCB Mechanism
Speaker: Dr. Prathamesh Potdar, Assistant Professor, RGIT, Mumbai.
Day, Date and Time: Tuesday, November 9, 2021, 9:30 AM to 10:30 AM.
Abstract:
MCCB plays a critical role in electricity distribution, and its failure may be costly and hazardous. According to Conseil International des Grands Re´seaux Electriques (CIGRE) report CIGRE SC13 (High voltage circuit breaker reliability data for use in system reliability studies, CIGRE Publication, Paris, 1991), it is explored that majority of the circuit breaker failures (90%) occurred due to the failure of the mechanism. In this study, MCCB mechanism is under development stage due to which failure data of mechanism is not available to predict reliability. Therefore, it is essential to assess and improve reliability of MCCB mechanism to know and achieve higher reliability. This paper demonstrates the process of reliability assessment and improvement of the MCCB mechanism by using Boolean algebra and Accelerated Life Test (ALT). Further, Weibull distribution is selected for reliability prediction based on comparison with other distributions. Reliability of mechanism is compared with before improvement and after improvement conditions. In reliability testing, ALT is used, and the result shows that frequency of latch link failure is maximum due to denting and distortion of link. Further, few improvement measures are proposed based on design and manufacturing aspects, and results of suggested measures shows improvement in MCCB mechanism reliability from 72.44 to 95.06%. The design for reliability approach can be implemented rigorously if the failures identified at the development stage of the product, which helps to reduce the considerable losses in the future.
Speaker Bio:
Dr. Prathamesh R. Potdar (PhD in Technology from SPCE, University of Mumbai, in 2020 & Masters in Technology in Machine design from SPCE, with First class in 2013 & awarded Merit Prize). I am working as assistant professor in RGIT, Versova, Mumbai from 2016 & having total 6.5 years of teaching experience and 1.5 years of Industrial experience. I have total 21 publications on credit with 36 Google scholar Citations, including International Journals (09), National Journals (01), International Conferences Publications (10), National Conference Publications (01). I am also Member of IIIE, IFERP, & IET. I have Won National Productivity Award (Platinum Category) in National Productivity Competition 2017 & 2021 organized by IIIE and received Certificate of appreciation for contribution towards implementing Digital solutions demonstrated at the Oracle Open World 2015 using Oracle PaaS cloud offering. I was Advisory Committee Member for virtual Conference on Industry 4.0, 2nd & 3rd Oct 2020 and Session chair for 62nd IIIE national Convention 2021. I am also Reviewer for International Journal of Quality & Reliability Management, Emerald Publications. I have delivered talk on “Role of big Data Analysis in Smart Manufacturing” in TEQIP-III RTU Sponsored five days’ workshop on “Emerging Technology in Industrial Automation” held from 01st to 5th Feb 2021 at Modi Institute of Technology, Kota. I have also received a grant from AICTE of Rs. 2,10,700/- and Minor Research Grant Rs 30,000/- from University of Mumbai. I have also Filed a Patent entitled with “Ergonomically design adaptable Laptop Briefcase with adjustable table and cooling fan” CBR No. 6672, Application No. 201821013670.
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