Space Charge Behavior and Technical Trends of its Measurement

Abstract

Recently, as a solution for earth-warming problem, the high voltage direct-current (HVDC) technology is growing in the world. An important issue of insulation for HVDC is space charge phenomena that would cause a severe influences on cable performance, then measurement methods of space charges also become more and more important. Here, space charge phenomena and their measurement techniques are looked over. About measurement techniques, not only recent progresses but international standardization of them are described.