Digital Protection Test Platform Based on RTDS

As IEC61850 has become the general international standard of substation communication, protections and the other secondary devices have new characteristics of digitization and network. The input signal is no longer the traditional analog alternating current component and the protection trip switch, SMV Message and Goose Message instead. The network performance is more and more important and normal relay protection test device is no longer suitable for digital protections. This paper has analyzed the transmission methods of the SMV message and GOOSE message, developed the digital protection test platform based on RTDS and put forward a digital protection test interface design based on FPGA.