LAN interconnections applied to transmit data between remote control devices in power industry installations

The paper discusses technological solutions that are used to organize communication between technical devices within the electrical substation area. Design and operation of presently used supervision and control systems are based on various communication solutions. Ever growing standards concerning the required quantity of data and their transmission rate induce a search for new solutions. The paper presents new concepts of LAN-based data exchange and an equipment that can be applied to develop SCADA systems using that technology. An example physical model of communication has been used to present a configuration of devices that form a frame of the network and remote control elements that use it.