Multipoint Measurement Technique for Tracking Electromagnetic Interference Propagation and Correlation in a Complex Installation

Electromagnetic interference (EMI) can degrade the power quality (PQ) in an electrical network. Identification of the interference source and its propagation can only be achieved by distributed measurement methods using synchronous multipoint measurements. This paper proposes a multipoint measurement analysis method using the number of coincidence events and a coincidence ratio to determine the relationship between each EMI event at several measurement locations. The measurement is performed using six distributed power quality analyzers.