Icing Testing Technology at Xuefeng Mountain Natural Test Station

There are some differences between the icing form under artificial environment and the real form of natural ice.So it is important to establish some natural icing test stations for the studies of icing mechanism,icing flashover characteristic,icing monitoring and warning technology,anti-icing and de-icing technology of transmission lines,etc.The state key laboratory of power transmission equipment system security and new technology of Chongqing University has built up a natural icing station on Xuefeng Mountain.At the test station,some towers have been established at different locations to install the icing structure objects such as conductors,insulators,etc.Through the usage of meteorological parameters measuring apparatus and some tension sensors fixed between samples and suspension objects,the monitoring of icing process of various samples have been realized.The studies on electrical test methods and flashover performance of natural icing insulators and on de-icing technology of transmission lines could be carried out at the natural icing station equipped by special power transmission line and AC/DC and impulse power supply devices.The operation experiences for more than three years show that Xuefeng Mountain Natural Icing Station has the ability to carry out the icing test researches of transmission lines.A large number of studies at the natural icing station show that the meteorological parameters are uncontrollable and have no rules to follow,the ice growth on atmospheric structure is an non-linear relationship with time,and the anti-icing and de-icing of transmission lines can be realized using reasonable measures.The construction of Xuefeng Mountain Natural Icing Test Station provides a good test platform for the research on anti-icing and de-icing technology of power system.