Series Overview; Application - ABB Relion 650 Series Product Manual

Transformer protection RET650
Version 1.1 ANSI

1. 650 series overview

The 650 series IEDs provide optimum 'off-the-shelf',
ready-to-use solutions. It is configured with complete
protection functionality and default parameters to meet
the needs of a wide range of applications for generation
transmission and sub-transmission grids.
The 650 series IEDs include:
• Complete ready to use solutions optimized for a wide
range of applications for generation, transmission and
sub-transmission grids.
• Support for user-defined names in the local language for
signal and function engineering.
• Minimized parameter settings based on default values
and ABB's new global base value concept. You only need
to set those parameters specific to your own
application, such as the line data.
• GOOSE messaging for horizontal communication.
• Extended HMI functionality with 15 dynamic three-color-
indication LEDs per page, on up to three pages, and
configurable push-button shortcuts for different
actions.
• Programmable LED text-based labels.
• Settable 1A/5A -rated current inputs.

2. Application

RET650 provides fast and selective protection, monitoring
and control for two- and three-winding transformers,
autotransformers, generator-transformer units and shunt
reactors. The transformer IED is designed to operate
correctly over a wide frequency range in order to
accommodate power system frequency variations during
disturbances and generator start-up and shut-down.
A very fast differential protection function, with
automatic CT ratio matching and phase shift
compensation, makes this IED the ideal solution even for
the most demanding applications. The differential
protection function is provided with 2nd harmonic and
wave-block restraint features to avoid tripping for
magnetizing inrush current, and 5th harmonic restraint to
avoid tripping during overexcitation conditions.
The differential function offers a high sensitivity for low-
level internal faults. The unique and innovative sensitive
differential protection feature of the RET650 provides the
best possible coverage for winding internal turn-to-turn
ABB Power Grids
faults, based on well-known theory of symmetrical
GUID-420ACE74-2F34-4991-8DA3-967843F6BFFF v2
components .
Low impedance restricted ground-fault protection
functions are available as complimentary sensitive and
fast main protection against winding ground faults. This
function includes a directional zero-sequence current
criterion for additional security.
Tripping from Pressure relief/Buchholz and temperature
devices can be done through the RET650 where pulsing,
lock-out contact output and so on is performed. The
binary inputs are heavily stabilized against disturbance to
prevent incorrect operations at for example, dc system
capacitive discharges or DC ground faults.
Versatile phase, ground, negative and zero sequence
overcurrent functions, which can be made directional,
provide further alternative backup protection. Thermal
overload with two time-constants, volts per hertz and
over/under voltage protection functions are also
available.
A built-in disturbance and event recorder provides
valuable data to the user about status and operation for
post-fault disturbance analysis.
An included breaker failure protection function allows
high speed back-up tripping of surrounding breakers.
M16637-3 v7
Disturbance recording is available to allow independent
post-fault analysis after primary disturbances.
Four packages have been defined for the following
applications:
• Transformer backup protection ( A00A)
• Two-winding transformer in single breaker
• Three-winding transformer in single breaker
• Tap changer control (A07A)
The packages are configured and ready for direct use.
Analog and tripping IO has been pre-defined for basic use.
Other signals need to be applied as required for each
application.
The graphical configuration tool ensures simple and fast
testing and commissioning.
© Copyright 2011 ABB Power Grids. All rights reserved
arrangements (A01A)
arrangements (A05A)
1MRK 504 127-BUS B
Issued: May 2020
Revision: B
SEMOD51222-5 v6.1.1
3