NR Electric introduces the smart substation solution which integrates MMS, GOOSE, SV, GMRP, SNTP and IEEE-1588 of IEC61850, enabling the complete digitalization of modern substations. The communication is composed of two independent LANs used as station bus and process bus respectively. Electronic CT/VT and Merging Unit are used to transmit sampled value over process bus using IEC61850-9-2. The Intelligent Control Unit installed in switchyard executes GOOSE input/output and GOOSE tripping command. The GOOSE interlocking is realized by NR’s PCS series protection & control units. This solution has been successfully implemented in a 500kV substation for more than one year.