OLPD Condition Monitoring of Complete Networks for Oil and Gas: Field Experiences and the Lessons Learned after Two Years of Continuous OLPD Monitoring

In this paper the authors are presenting the continuation of the previous work of on-line partial discharge (OLPD) condition monitoring challenges and solutions explained through case studies presented at the 2016 European Petroleum and Chemical Industry Conference (PCIC). This paper presents the field experiences and the lessons learned after two years of continuous OLPD monitoring carried out on a complete HV network comprising rotating machines, transformers, switchgears and HV feeders for an oil and gas facility in central Asia. The paper reports further findings, of OLPD condition monitoring, and the remedial actions implemented consequently to avoid failures and unwanted outages. This is an example of how site strategy can be shifted from a time-based maintenance regime toward a more condition-based maintenance regime. Furthermore, innovation of data analysis tools and a case study of an OLPD and Motor Current Signature Analysis (MCSA) test campaign are shown; this approach has now justified the deployment of a permanent continuous monitoring system.