摘要
绕组温升是影响变压器安全稳定运行的重要因素,准确定量计算变压器的绕组温升及其分布特性对变压器至关重要。针对一台220 kV强迫油循环风冷变压器,基于流体网络法建立了变压器冷却系统温度场、流体场油流三维分布仿真计算模型。在对冷却系统整体流体场三维油流分布仿真计算的基础上,利用流固耦合法分块分析了该型变压器冷却系统油流场及绕组温度场分布特点,从定性角度研究了变压器内部绕组各处温升的大致分布规律。变压器温升现场实测结果与仿真计算结果相一致,该仿真计算方法满足工程要求。
Winding temperature rise is a key parameter affecting the safe and stable operation of transformer.It is of the utmost importance for the transformer to accurately and quantitatively calculate the winding temperature rise and its distribution characteristics.In this paper,a three-dimensional simulation calculation model of temperature field oil flow in the fluid field in a 220 kV oil-forced air-forced(OFAF)transformer is established by using the fluid network method.Based on the simulation calculation of the three-dimensional oil flow distribution of the whole fluid field in the cooling system,the distribution characteristics of the oil flow field and winding temperature field of the transformer are analyzed by using the fluid-solid coupling method,and the distribution law of temperature rise in each winding of the transformer is qualitatively analyzed.The field measurement results of transformer temperature rise are consistent with the simulation results,and the simulation calculation method can meet the engineering requirements.
作者
王劭
赵建利
白全新
寇正
WANG Shao;ZHAO Jianli;BAI Quanxin;KOU Zheng(Inner Monggolia Electric Power Science Research Institute,Huhhot 010020,China)
出处
《浙江电力》
2021年第10期116-122,共7页
Zhejiang Electric Power
基金
内蒙古电力公司2019年重点科技项目(510141190013)。
关键词
变压器
流体网络
温度场
分块耦合
transformer
fluid network
temperature field
block coupling
