IEC 61850-Based Advanced Bus Transfer Scheme For Industrial Substations: Copyright Material IEEE Paper No. PCIC-(do not insert number)

In industrial power systems, supply power reliability is crucial to maintain process operations and ensure personnel safety. A Main-Tie-Main (MTM) residual bus transfer scheme effectively minimizes power system outages by quickly disconnecting a faulted source of power and transferring load to an available source, with minimal interruption during the transfer sequence. In industrial facilities such as refineries, many processes are supplied via motors. A variety of motors may be used: synchronous or induction, large or small. A transfer of supply power must be executed to avoid mechanical damage to motors and driven equipment. Utilizing traditional protection relays, the most efficient way to apply a MTM scheme is to use IEC 61850 GOOSE (Generic Object Oriented System Event) messaging for the inter-relay communications and control signaling. This technical paper discusses the advantages of a residual MTM automatic bus transfer scheme using IEC 61850 GOOSE messaging.

I. Introduction

Technological advancements in the design of relay hardware and the development of high-speed peer-to-peer communication protocols have resulted in a new generation of intelligent electronic devices (IEDs). An efficient way to apply these devices and design a custom-built automatic bus transfer scheme is to use high-speed peer-to-peer IEC 61850 GOOSE messaging. IEC 61850 uses an Ethernet connection as the medium of communication between the protective relays. This paper highlights the basics of IEC 61850 and the MTM transfer scheme as well as provides insight to the application of a MTM scheme using IEC 61850 GOOSE messaging in an industrial facility.