Intelligent Interlocking of Switching Devices

Abstract

A system of operative interlocks of disconnectors serves to prevent incorrect actions of personnel during operational switching on the electric substation. A variant of designing an intelligent interlocking system for switching devices using digital technologies is considered. A special feature of the system is the use of inductive sensors for switching devices in place of unreliable contacts of the disconnectors. The use of specialized controllers and digital information exchange between them allows improving the information perfection of the system, reducing the overall length of the electromagnetic interlocking cable network on the substation and reducing the cost of its operation. It is proposed to use standard protocols for information exchange to integrate the interlocking system into the substation automated process control system.