To research the effect of temperature and humidity on corona performance of UHV DC transmission line, a mini corona cage has been constructed and put in a manual environment room, which temperature and humidity can be controlled. At the same time, a corona performance measuring system by using vary methods such as current impule method, acoustic method have been set up too. The corona inception corona voltage gradient of a copper line have been measured in a mini corona cage not only at different absolute humidity from 3g/m{sup}3 to 12g/m{sup}3 but also at different temperature from 0°C to 35°C. The relationship between inception corona voltage gradient and temperature and humidity have been achieved.
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机译：为了研究温度和湿度对UHV直流输电线路电晕性能的影响，已经构建并放入了手动环境室的迷你电晕笼，可以控制温度和湿度。同时，通过使用电流杂散方法等各种方法，也建立了电晕性能测量系统，也已经设置了声学方法。铜线的电晕初始电晕电压梯度已经在迷你电晕笼中测量，不仅在不同的绝对湿度下从3g / m {sup} 3至12g / m {sup} 3，而且在0°C的不同温度下35°C。已经实现了初始电晕电压梯度和温度和湿度之间的关系。
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