改进的油浸式电力变压器绕组热点温度计算和在线监测及运行分析

针对变压器绕组热点温度的计算模型,采用变步长的Runge-Kutta方法对计算模型求解,实时计算变压器的顶层油温和绕组最热点温度。建立针对变压器的实时在线监测系统,实现变压器运行情况的监测分析,采用先进的计算方法对变压器热点温度计算模型求解,提高计算精度;并对变压器短期过负载能力进行科学合理预测。

On-line Monitoring and Operation Analysis and Calculation of Improved Oil-immersed Power Transformer Winding Hot Spot Temperature

Based on computational model of transformer winding hot spot temperature, using variable step method Runge-Kutta for solving real-time computing top oil temperature and the hottest temperature of the transformer windings. The real-time online monitoring system for transformers was established, monitoring and analysis of transformer operation were achieved. Using advanced computational methods, the transformer hot spot temperature calculation model was given to improve accuracy, make forecast on transformer short-term overload capacity scientifically and rationally.