ABB Relion® 630 series Feeder Generator protection and control REG630

Generator protection and control REG630

REG630 has been designed to protect small and medium-sized power generators

and power generator-transformer blocks in utility and power distribution systems.

Application

REG630 has been designed to be the main

protection for synchronous generators, offering

full protection during start-up and normal run

for both the generator and the prime mover.

The comprehensive generator management relay

is typically used in small and medium-sized diesel,

hydroelectric, combined heat and power (CHP),

and steam power plants. REG630 offers one

predefined configuration, intended for directly

connected generator sets. REG630 has been extended with low-voltage

ride-through, reactive power undervoltage and

voltage vector shift protection to further ensure

grid stability and reliability, and thus avoid grid

collapse. The low-voltage ride-through protection

allows monitoring of distributed generation

during low-voltage fault ride-through, in order

to determine whether and when to disconnect,

for instance, a solar or wind farm from the grid.

Also the reactive power undervoltage protection

does the same but specifically at the grid

connection point, whereas the voltage vector

shift protection detects islanding from the grid.

An optional RTD/mA module offers eight

analog RTD or mA measuring inputs and four

mA outputs. The RTD and mA inputs can be

used for temperature measurement of generator

bearings and stator windings, thus extending the

functionality of the thermal overload protection

and preventing premature aging of the generator

windings. They can also be used for measuring

the ambient air or coolant temperature. The four

mA outputs can be used for transferring freely

selectable measured or calculated analog values

to devices provided with mA inputs.

Product highlights

• Extensive range of protection functionality

for both synchronous generators and

interconnection points of distributed

generation units

• Extensive generator protection with 100%

stator earth-fault, generator differential

and underexcitation protection

• Advanced interconnection protection fulfilling

the latest grid codes for higher grid stability and reliability