220kV主变因冷却器全停跳闸分析及对策

Cause analysis and countermeasures on 220kV transformer trip out by stop of cooler

通过对变压器冷却系统控制原理的分析，指出了控制回路中存在的缺陷和其可能导致的严重后果，并提出了解决的办法。

The principle of forced - oil and forced - air cooling system of transformer is analyzed. The defects in the control circuit and its possible consequences are discussed. The resolutions are presented.