Improving the reliability of busbar protection system with IEC 61850 GOOSE based communication

The main task of the “relay” protection system is to provide trip commands in case of faults and to prevent the operation of the electrical equipment in dangerous modes. The set of the protection functions and the system structure have an impact on the reliability and respectively dependability of the protected structure. In some smaller node-point electrical facilities like step-up substations for PVPPs and wind-farms, the set of protection functions required by the respective regulations can be limited. The multifunctional features of new generations of Intelligent Electronic Devices (IEDs) and the options to use IEC 61850 based communication, protection and automation, provide opportunities for improvement of the busbar protection system.