变压器的冷却控制在电力生产中的应用

The application of transformer cooling control on power production

鉴于某大型水电站主变压器正常运行时其冷却控制系统误发"主变冷却全停"信号,造成主变保护误动作。根据现场检查,判断出是由于主变压器油面温度指示控制器温度模拟量输出值出现越限现象,致使冷却控制流程中的主变冷却全停程序启动造成的。针对这一问题,对冷却控制流程作了修改和完善,确保了主设备的安全稳定运行。

The main transformer cooling system false send the sign-the main transformer cooling broken when the main transformer is normally operating in some large-scale hydropower station.This phenomena result the protection of main transformer false operation.Based on the field investigation,It can be conclude that the cause is the analogue output of oil-surface temperature index controller of transformer over-limited.Aiming at the problem,this paper has amended and perfected the cooling control program in order to...