Method for Assessing Inductive Interference Induced on Relay Protection, Automation and Control Systems of High-Voltage Substations

Abstract

A method is proposed for assessing electromagnetic interference from currents flowing through equipment, induced on relay protection and automation equipment located near high-voltage equipment. The computational method is based on calculating the spatial configu-ration of the electromagnetic field by dividing the conductive system into sections and calculating the spatial and current coefficients of influence from a single current. Using real currents in electrical equipment in calculations obtained for example from fault recorders, the method makes it possible to determine the spatial position and orientation of equipment with an acceptable level of electromagnetic influence.