Effect of Field Direction on the ac Breakdown Properties of a Bamboo-Ice Composite System at Cryogenic Temperature

Abstract

We studied the use of bamboo as a material of low environmental impact. Bamboo is widely distributed in warm climates, naturally decomposes and is characterized by the properties of excellent elasticity and ability to absorb water. We believe that a bamboo-ice composite system can be used as a substitute for glass fiber reinforced plastics (GFRP), which do not naturally decompose, in electrical insulation systems that operate at cryogenic temperature. In this paper, we report the effect of field direction on alternating-current (ac) breakdown properties of the bamboo-ice composite system in liquid nitrogen. The ac breakdown properties of the bamboo-ice composite system show strong anisotropism.