Development of The New Method for Transmission of Current and Voltage Measurements in Accordance with Iec 61850 Providing Reduction of the Traffics to the “Process Bus”

The idea of development and implementation of digital substations, based on the application of the IEC 61850 standard, is widely used all over the world [1], [2]. The modern approach to digital substations involves the use of a sufficiently large number of merging units (MU) and intelligent electronic devices (IED), the data transfer between them is carried out through the Local Area Network (LAN) using the SV and GOOSE protocols. While developing the LAN structure it is needed to take into account the amount of traffic produced by SV streams. To ensure reliable operation of protection automation control system (PACS) for digital substation it is necessary to use specialized methods for managing broadcast traffic (VLAN, QoS, etc.). Sophisticated LAN leads to increasing of development and maintenance costs of digital substation.