ANALYSIS OF EXISTING APPROACHES AND METHODS OF DIAGNOSTICS OF ON-LOAD TAP CHANGER OF POWER TRANSFORMERS

In electrical networks of almost all voltage classes, the main link in work on transmission energy is a power transformer. At moment, about 60% them are operated our country with significant excess service life, which increases requirements for their technical control and diagnostics units. Switching devices an integral part transformers. They necessary to regulate substation busbars depending load consumers. Not only reliability supply industrial enterprises, cities agriculture, but also quality depends operation. same time, they one vulnerable nodes converters. Although parameters diagnostic signs switching not as extensive transformer itself, nevertheless require special attention from operating personnel. This due variety switchgear types that exist, methods used diagnose them. For this reason attempt has been made analyze existing approaches diagnosing these mechanical controlled regulators. We propose new approach terms high-voltage equipment, including transformers – introdiagnostics. It based non-destructive (without opening tanks draining dielectric liquids) characterize state equipment. present original method on-load tap changer, oscillography subsequent analysis operation changer contact system without oil diverter switch’s tank.