变压器过负载状态下绕组热点温升计算的指数方程方法

Exponential Equation Method of Power Transformer Winding Hot-spot Temperature Rise Calculation for Overloading Conditions

为控制电力变压器过负载运行状态下的危害,提高电力变压器的过负载能力,对电力变压器过负载状态下绕组热点温升进行计算。通过实例分析,证明电力变压器过负载状态下绕组热点温升计算的指数方程方法可有效地用于电力变压器过负载能力的分析与控制。

The calculations of power transformer winding hot-spot temperature rise are performed in this paper for reducing the risk caused by overloading conditions and improving overload capability. Thereafter a comparison between the calculated and measured values was realized,the results shows that the exponential equation Method of power transformer winding hot-spot temperature rise calculation can be applied effectively to analysis and control overload capability.