Transformer real-time reliability model based on operating conditions
Transformer real-time reliability model based on operating conditions
复制标题
基于运行工况的变压器实时可靠性模型
DOI：
10.1631/jzus.2007.a0378
复制
发表时间：
2007
影响因子：
3.2
通讯作者：
Yuanzhan Sun
中科院分区：
文献类型：
--
作者：
Jian He;Lin Cheng;Yuanzhan Sun
Operational reliability evaluation theory reflects real-time reliability level of power system. The component failure rate varies operating conditions. The impact of real-time operating conditions such as ambient temperature and transformer MVA (megavolt-ampere) loading on transformer insulation life is studied in this paper. The formula of transformer failure rate based on the winding hottest-spot temperature (HST) is given. Thus the real-time reliability model of transformer based on operating conditions is presented. The work is illustrated using the 1979 IEEE Reliability Test System. The changes of operating conditions are simulated by using hourly load curve and temperature curve, so the curves of real-time reliability indices are obtained by using operational reliability evaluation.
