气体绝缘组合电器(gas insulated switchgear, GIS)是输变电网中的主要设备之一。本文介绍了可编程控制器(programmable logic controller, PLC)在110 kV GIS操作回路中的设计。利用PLC的模块化结构、配置灵活和软件控制技术，实现了110 kV GIS控制、联锁、通信功能。%GIS is one of the main equipment in the power grid substation. This paper introduces the design of PLC in 110 kV GIS control circuit. Modular structure, flexible configuration and the software control technology based on PLC, to achieve the functions of 110kV GIS control, interlock and communication.
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