Instruments and Systems: Monitoring, Control, and Diagnostics Annotation << Back Experimental System for Monitoring Diagnostics of High-Voltage Insulators During Operation D.A. IVANOV The article is devoted to an experimental system for monitoring the technical condition of high-voltage insulators of substations and overhead power lines. The principles of operation and the arrangement of sensors as part of the system are described. The methodology for building a monitoring system, instrumental implementation and a method for processing diagnostic information from sensitive elements are described. Attention is drawn to the problem of practical application of the method of remote non-contact monitoring of the current operating state of high-voltage insulators. Measurements of sets of characteristics of partial discharges on high-voltage insulators containing various types of dangerous defects by sensors are described. The ability to detect sources of partial discharges with reference to the place of occurrence is important for the localization of a faulty element and its further diagnosis. Keywords: remote diagnostics, partial discharges, non-destructive testing, high-voltage insulators, insulation defects, monitoring system. DOI: 10.25791/pribor.6.2022.1342 Pp. 15-23.