DETERMINING VLAN-IDS FOR A SWITCHED-BASED COMMUNICATION NETWORK OF A PROCESS CONTROL SYSTEM

摘要

The present invention is concerned with a Process Control (PC) or Substation Automation (SA) system with appropriate message filtering based on Virtual Local Area Network identifiers VLAN-IDs as communication sub-network identifiers. The VLAN-IDs are determined in order to optimize data flow in the sense that receiver IEDs only receive the intended messages, while at the same time the number of sub-network identifiers is reduced to a maximum extent. Restricting the real time traffic in such a way will ensure proper operation of the systems, and particular of large SA systems using GOOSE for interlocking and having sensors connected with the Sampled Value (SV) protocol according to IEC 61850-9-2.