基于PCC的变压器强油风冷控制系统

On Transformer Forced-oil-air Cooling Control System Based on PCC

针对变压器强油风冷控制系统电气控制回路继电式控制方式存在的可靠性差、保护功能不全、不易扩展、没有通信接口等问题,提出了用功能强、可靠性高的PCC代替继电式开关对控制回路进行改造的方法,设计了一种新型变压器强油风冷控制系统。实际运行表明,该装置运行可靠、控制准确、功能完善,并具有显著的节能效果。

The contactants and relays are adopted in electrical control circuit of existed transformer forced-oil-air cooling control system,with low reliability,little protection function,uneasily extending and no communication interface.The way that programmable computer controller(PCC) with high reliability and versatility replaces partial unreliable contactants and relays to modify older system is presented,and a new transformer forced-oil-air cooling control system is designed.Its site operation shows that the device is of high operation reliability and control accuracy,has perfect functions and no table effect of power saving.