ABB offers a complete portfolio of generator protection solutions for all types and sizes of generators and generator-transformers units. As members of the Relion protection and control product family, the generator protection IEDs REG670
are designed to implement all the core values of the IEC 61850 standard. The protection IEDs also support other types of interfaces to the plant control system.
A generator protection system with REG670/650 meets the
requirements for maximum dependability and availability. The
differential protection internal/external fault discriminator is
based on negative sequence current values, enabling fast
and selective decision to operate.
The unique main protection
functions are able to selectively detect and clear all fault types
over 100% of the stator winding. The detection criteria can
be used to create intelligent, application‑specific functions
to enhance your protection system, enabling it to meet very
specific requirements, for instance, when the operating
conditions of the plant change.