Applying Continuous Monitoring & Diagnosis (M&D) to Critical Rotating Machines with no Additional Device to Install: Copyright Material IEEE, Paper No. PCIC-2018-39

Rotating machines are widely used in almost all industries as a critical component for process availability. Inadvertent failure of rotating machines causes high repair expenses and loss of revenue. Existing Monitoring and Diagnosis (M&D) techniques require either additional device(s) to be installed or scheduled shutdowns for testing. This paper proposes continuous M&D of the rotating machines as a part of Machine Protection Relay (MPR), which is already installed in most critical machines. Proposed applications as a part of an already installed MPR can proactively monitor Thermal, Electrical, and Mechanical failure modes; and take control actions. This paper further performs extensive testing of Stator M&D by monitoring the evolution of a stator interturn fault, and also lessons learnt from the site installation of an advanced MPR. Test results are presented from actual field data of a damaged rotating machine as well as a simulated stator-turn fault in a real time environment.