Basler BE1-GPS100 relays in the S1 case were installed because no cutting was required on the relay panel where the old reverse power relays were to be removed.

For a basic overview of generator protection, download the Generator Protection Application Guide. This guide was developed to assist in the selection of numerical multifunction and single function relays to protect a generator. The purpose of each relay is described and related to one or more power system configurations.

Undetected  Loss of Prime Mover

A steam turbine at a distributed generation site, operating in parallel with the utility grid, suddenly lost its prime mover, the steam supply. The existing electromechanical protection failed to recognize the motoring condition, which resulted in the generator operating as a synchronous motor for an extended period of time. The thermal turbine scheme of the generator also failed to detect the motoring condition. Finally, an operator noticed the real power output at nearly zero and manually tripped the breaker between the industrial electric power system and the utility

The BE1-GPS100 provided dramatically improved reverse power protection, performance of the 32R function is an order of magnitude better than the existing previous-technology relays.

For details, see Application Note PC-GPS01 - Loss of Prime Mover: Generator Reverse Power Protection (32) Replacement Opportunities (GE Type GGP-53C and ABB Type CW)
 

What do you need in generator protection?

The examples above are just two of the issues in generator protection.

The BE1-GPS100 provides substantial functionality in a small package, useful where space is very limited but high functionality is needed. It is a multifunction, programmable numerical protection, meter, and control relay.

For more details on the BE1-GPS100, see Bulletin UHQ

If your application involves the protection of small to medium generators or impedance-based loss of field consider a BE1-11g.

The BE1-11g is a multifunction numerical protection system that provides the comprehensive suite of functions for the protection of generators from faults and abnormal operating conditions.

For more details on the BE1-11g, see Bulletin URJ.
 

For more information, contact Technical Support or your local sales representative