수소충전소 압축기의 CBM+ 데이터수집을 위한 기술개발

Abstract

Purpose: This paper demonstrates Functional Safety Requirements by collecting and analyzing the condition-based maintenance (CBM+) data of the compressors such as chillers, compressors, and dispensers of a hydrogen refueling station (HRS) installation as well as HRS operation using power quality monitoring (PQM) instrumentation at the HRS input stage.BRMethods: Demonstrate fault measurement items and fault diagnosis such as sound, vibration, and current with CBM+. The feature extraction of the collected data in this process was analyzed using an LSTM AutoEncoder to demonstrate the occurrence of failures.BRResults: There were a total of 21 HRS accidents from 2005 to 2014 in Japan and 22 accidents in the US from 2004 to 2012. In particular, approximately 90% of the hydrogen gas leakage accidents in Japan and approximately 91% in the US were due to human error. The CBM+ of a hydrogen compressor was demonstrated by connecting a PQM instrument to the HRS input. BRConclusion: A technically developed PQM measuring device was installed at the Gwangju HRS input power source and data was collected for approximately 3 months. After analyzing and evaluating the collected data through the LSTM AutoEncorder, it was demonstrated that HRS failure occurred after approximately 7 days. Therefore, we propose a failure detection and failure diagnosis model through the CBM+ of domestic HRSs.