Increasing the Reliability of Online Insulation Condition Assessment of MV-HV Equipment

摘要

In recent years, a number of new methods of on-line insulation assessment have been developed for MV and HV AC equipment. These methods are slowly gaining the recognition of the electrical industry. The attractiveness of these methods is that they can be applied on-line. In other words, they can be used to assess the equipment's condition while it is in operation, without the need for a shut down. These methods include On-line Partial Discharge Analysis (PDA), On-line Vibro-acoustic Analysis for Rotating Machines (VAA), Dissolved Gas Analysis for Transformers (DGA) and On-line Power Factor Monitoring (PFM), to name a few.