变压器辅助冷却器不能正常停运的解决方法

The Solution of the Transformer Auxiliary Cooler Failed to Stop

变压器风冷控制回路中,辅助冷却器由发变组保护装置或是油温表的接点来控制投停,目的是当变压器工作出现较大负荷或是油温较高的工况时,启动辅助冷却器加强通风散热,避免变压器持续温度升高而影响使用寿命,当负荷或是油温降低时,停止辅助冷却器,使其退出运行。文章针对主变压器辅助冷却器投入后不能正常停运的问题,探讨了"如何消除长距离电缆分布电容影响"的课题。

The outset or take-off of the auxiliary cooler is always controlled by the contacts of the devices or oil tem- peration meter in the transformer cooling syetem. The auxiliary cooler is designed to run with an increased burden and to stop with a reduced burden to prolong the life of the transformer. The issue of how to eliminate the influence of the distributed capacitance in long-distance cable is explored in the paper about the solution of the auxiliary cooler failed to stop.