可编程控制器在大型变压器冷却系统中的应用

The Application of PLC in Large-Size Transformer Cooling System

大型变压器是电力系统安全运行的基本保证。用可编程控制器(以下简称PLC)对原有的变压器强油空气冷却器继电—接触器控制进行改造,无论是在控制精度和可靠性方面均有较大提高,另外发挥PLC通讯功能,将变压器的运行纳入电力系统的“三遥”子系统,可为其建立一可靠的通讯控制平台,为无人值守系统打下基础。

Large-Size transformer provides a safe running environment for electrical system. PLC improves the air-cooling relay control system greatly in precision and reliability. Besides the above, by using the telecommunication function, we may bring the running of transformer into “Three-Control” sub-system of electrical system. By doing that, we may set up a reliable telecommunication control tevrace to ram down the fundation for the system with no one on duty.