PLC在干式变压器分布式监控系统中应用

根据长期的电气设备的安全运行经验，基于西门子STEP7—200系列PLC(Programmable Logic Controller)和工控机、智能温度变送器、风机状态检测仪，低成本地研制了高性能、高可靠性的干式变压器分布式自动监控系统。实现了干式变压器温度的实时监测，并实时地对干式变压器风冷系统设备的运行状况进行检测和自动控制，在确保变压器本身的安全运行过程中实现了对配电系统的安全运行。

Application of PLC in distributed supervisory system of dry transformer

With the long-term safe operation experiences of electric devices,a low cost and high re-liable distributed supervisory system of dry transformers is developed,which is composed of Smenses STEP7-200PLC(Programmable Logic Controller),an industrial computer,intellectualized temperature converters and aerator monitors.It realizes the real time monitoring of dry transformer temperatures and carries out the real time operation state supervision and automatic control of the windy-cold system.The safe operation of dry transformers and the electricity distribution system is thus ensured.