Analysis and Testing of Multifunctional relay using IEC-61850 Protocol
The IEC-61850 with Intelligent Electronics Device is used as protection, control, monitoring in real time operation of power system. In this paper discussed functional capability of relay including different types of protection function. These relays have optimized cost because of its multifunctional capability in single unit. Such relays eliminate need of various individual field equipment such as measurement transducer, fault recorder and sensors. Also in this paper we are focusing on different types of transformers protection alarm such as Buchholz relay (BZ), Oil temperature Indicator (OTI), Pressure Relief Valve (PRV), Magnetic Oil level Gauge (MOG). This is implemented through over current relay (7SJ64) and Differential relay (7UT61) which is integrated with IEC-61850. This paper helps to understand IEC-61850, transformer operation in digital substation.