Assessment of on-line diagnostic using partial discharge mapping systems in MVUG cable

An extensive effort made to understand how to use effectively the various online partial discharge technologies to establish the condition of medium voltage underground cable circuits. Cable circuits often contain multiple branches with different cable designs and range of insulation materials. In addition, each insulation material ages differently as a function of time, temperature and operating environment. There is a wide variety of online partial discharge technologies available for assessing the condition of cable circuits with a diversity of claims about the effectiveness of each approach. This assessment was undertaken to help address these issues especially on Malaysia underground medium voltage cable. All together three (3) manufacturers participated in this project. There are two (2) main parts in this project i.e. Desktop Assessment and Actual Testing Assessment.