This paper summarizes several aspects of energized test methods
pattern recognition of defect types and partial discharge source localization and live testing work management
and reviews these important research results and progress in recent years. Then the paper discusses the limitations of art energized test technology
severity assessment methodology of partial discharge source
the detection and analysis of different types of partial discharge voltage applied
the charging detection mode of development
information technology for live testing work. And the paper analyzes the problem in research and application of energized test based on condition-based maintenance system and possible directions for future research and applications. The possible development direction in future research and application are proposed.